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Muderis MA, Tan YC, Lu W, Tetsworth K, Axelrod D, Haque R, Akhtar MA, Roberts C, Doshi K, Al-Jawazneh S, Hoellwarth JS. Transtibial osseointegration following unilateral traumatic amputation: An observational study of patients with at least two years follow-up. Injury 2024; 55:111568. [PMID: 38669890 DOI: 10.1016/j.injury.2024.111568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 03/06/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024]
Abstract
IMPORTANCE Most patients use a traditional socket prosthesis (TSP) to ambulate independently following transtibial amputation. However, these patients generally require prosthesis repairs more than twice annually and an entirely new prosthesis every two years. Furthermore, transtibial amputation patients have four times the skin ulceration rate of transfemoral patients, prompting more frequent prosthesis refitting and diminished use. Trans-Tibial osseointegration (TTOI) is a promising technique to address the limitations of TSP, but remains understudied with only four cohorts totaling 41 total procedures reported previously. Continued concerns regarding the risk of infection and questions as to functional capacity postoperatively have slowed adoption of TTOI worldwide. OBJECTIVE This study reports the changes in mobility, quality of life (QOL), and the safety profile of the largest described cohort of patients with unilateral TTOI following traumatic amputation. DESIGN Retrospective observational cohort study. The cohort consisted of patients with data outcomes collected before and after osseointegration intervention. SETTING A large, tertiary referral, major metropolitan center. PARTICIPANTS Twenty-one skeletally mature adults who had failed socket prosthesis rehabilitation, with at least two years of post-osseointegration follow-up. MAIN OUTCOMES AND MEASURES Mobility was evaluated by K-level, Timed Up and Go (TUG), and Six Minute Walk Test (6MWT). QOL was assessed by survey: daily prosthesis wear hours, prosthesis problem experience, general contentment with prosthesis, and Short Form 36 (SF36). Adverse events included any relevant unplanned surgery such as for infection, fracture, implant loosening, or implant failure. RESULTS All patients demonstrated statistically significant improvement post osseointegration surgery with respect to K-level, TUG, 6MWT, prosthesis wear hours, prosthesis problem experience, general prosthesis contentment score, and SF36 Physical Component Score (p < 0.01 for all). Three patients had four unplanned surgeries: two soft tissue refashionings, and one soft tissue debridement followed eventually by implant removal. No deaths, postoperative systemic complications, more proximal amputations, or periprosthetic fractures occurred. CONCLUSIONS AND RELEVANCE TTOI is likely to confer mobility and QOL improvements to patients dissatisfied with TSP rehabilitation following unilateral traumatic transtibial amputation. Adverse events are relatively infrequent and not further disabling. Judicious use of TTOI seems reasonable for properly selected patients. LEVEL OF EVIDENCE 2 (Therapeutic investigation, Observational study with dramatic effect).
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Affiliation(s)
- Munjed Al Muderis
- Department of Orthopaedic Surgery, Macquarie University Hospital, Macquarie University, Macquarie Park, Australia
| | - Yao Chang Tan
- Department of Clinical Medicine, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, Australia
| | - William Lu
- Department of Clinical Medicine, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW, Australia
| | - Kevin Tetsworth
- Department of Orthopaedic Surgery, Macquarie University Hospital, Macquarie University, Macquarie Park, Australia; Department of Orthopaedic Surgery, Royal Brisbane and Women's Hospital, Queensland, Australia
| | - Daniel Axelrod
- Department of Orthopaedic Surgery, Royal Brisbane and Women's Hospital, Queensland, Australia.
| | - Russel Haque
- Department of Orthopaedic Surgery, Macquarie University Hospital, Macquarie University, Macquarie Park, Australia
| | - Muhammad Adeel Akhtar
- NHS Fife, UK; University of Edinburgh College of Medicine & Veterinary Medicine, UK; University of St. Andrews School of Medicine, UK
| | - Claudia Roberts
- Department of Orthopaedic Surgery, Macquarie University Hospital, Macquarie University, Macquarie Park, Australia
| | - Karan Doshi
- Department of Orthopaedic Surgery, Macquarie University Hospital, Macquarie University, Macquarie Park, Australia
| | - Shakib Al-Jawazneh
- Department of Orthopaedic Surgery, Macquarie University Hospital, Macquarie University, Macquarie Park, Australia
| | - Jason Shih Hoellwarth
- Department of Orthopaedic Surgery, Macquarie University Hospital, Macquarie University, Macquarie Park, Australia; Limb Lengthening and Complex Reconstruction Service, Hospital for Special Surgery, New York, NY, USA
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Kang N, Al-Ajam Y, Keen P, Woollard A, Steinitz H, Farrant J, Chow G. Radiological evaluation before and after treatment with an osseointegrated bone-anchor following major limb amputation-a guide for radiologists. Skeletal Radiol 2024; 53:1033-1043. [PMID: 38044373 PMCID: PMC11001742 DOI: 10.1007/s00256-023-04524-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/19/2023] [Accepted: 11/20/2023] [Indexed: 12/05/2023]
Abstract
Osseointegrated implants have been developed to allow direct skeletal fixation of a prosthesis as an alternative to traditional socket-fitted prostheses for patients who have suffered from a major limb amputation. The implants contribute to improvements in functional outcome and quality of life and radiological evaluation plays a crucial role in pre- and post-operative assessment. This article acts as a guide for radiologists who may be tasked with providing the radiological information required by surgeons and prosthetists. We also look at the radiological appearances of complications that may arise in patients treated with an osseointegrated implant. Plain X-rays are used to screen patients who wish to undergo treatment. Limb-length X-rays are then used to measure the length of any residual bone, and comparisons can be made with the normal side (if present). From this, decisions about the likely size of the implant and the need for further amputation can be made. CT scans enable accurate assessment of the medullary cavity and cortical thickness. Post-operatively, plain X-rays form the mainstay of the routine monitoring of the bone-implant interface. Potential complications include infection, aseptic loosening, mechanical fracture of the implant and periprosthetic fracture. Infection and aseptic loosening can be seen as a lucency at the bone-implant interface which (if left untreated) can lead to loss of the implant. Implant and periprosthetic fractures are radiographically obvious. Radiologists involved in the care of patients undergoing treatment with an osseointegrated implant should become familiar with the imaging requirements so they can contribute to optimal patient outcomes.
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Affiliation(s)
- Norbert Kang
- Department of Plastic Surgery, Royal Free Hospital, Royal Free London NHS Foundation Trust, London, UK
| | - Yazan Al-Ajam
- Department of Plastic Surgery, Royal Free Hospital, Royal Free London NHS Foundation Trust, London, UK
| | - Phyllis Keen
- Faculty of Medicine, Imperial College London, Sir Alexander Fleming Building, Imperial College Rd, London, UK.
| | - Alexander Woollard
- Department of Plastic Surgery, Royal Free Hospital, Royal Free London NHS Foundation Trust, London, UK
| | - Hannah Steinitz
- Department of Radiology, Royal Free Hospital, Royal Free London NHS Foundation Trust, London, UK
| | - Joanna Farrant
- Department of Radiology, Royal Free Hospital, Royal Free London NHS Foundation Trust, London, UK
| | - Geoffrey Chow
- Department of Radiology, Royal Free Hospital, Royal Free London NHS Foundation Trust, London, UK
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Rivero S, Stevens NM. The nonsalvageable tibia: amputation and prosthetics. OTA Int 2024; 7:e306. [PMID: 38840707 PMCID: PMC11149746 DOI: 10.1097/oi9.0000000000000306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/17/2023] [Accepted: 12/01/2023] [Indexed: 06/07/2024]
Abstract
Mangled extremities are a challenging problem for the orthopaedic surgeon. The decision for salvage versus amputation is multifactorial. Several work groups have attempted to create scoring systems to guide treatment, but each case must be regarded individually. As surgical technique and prosthetics continue to improve, amputations should be seen as a viable reconstructive option, rather than failure. This article reviews scoring systems for the mangled extremity, outcomes on salvage versus amputation, amputation surgical technique, and prosthetic options.
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Flanagan W, Becraft K, Warren H, Stavrakis AI, Bernthal NM, Hardin TJ, Clites TR. Prosthetic Limb Attachment via Electromagnetic Attraction Through a Closed Skin Envelope. IEEE Trans Biomed Eng 2024; 71:1552-1564. [PMID: 38090864 DOI: 10.1109/tbme.2023.3342652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
OBJECTIVE Current socket-based methods of prosthetic limb attachment are responsible for many of the dominant problems reported by persons with amputation. In this work, we introduce a new paradigm for attachment via electromagnetic attraction between a bone-anchored ferromagnetic implant and an external electromagnet. Our objective was to develop a design framework for electromagnetic attachment, and to evaluate this framework in the context of transfemoral amputation. METHODS We first used inverse dynamics to calculate the forces required to suspend a knee-ankle-foot prosthesis during gait. We then conducted cadaveric dissections to inform implant geometry and design a surgical methodology for covering the implant. We also developed an in silico framework to investigate how electromagnet design affects system performance. Simulations were validated against benchtop testing of a custom-built electromagnet. RESULTS The physical electromagnet matched simulations, with a root-mean-square percentage error of 4.2% between measured and predicted forces. Using this electromagnet, we estimate that suspension of a prosthesis during gait would require 33 W of average power. After 200 and 1000 steps of simulated walking, the temperature at the skin would increase 2.3 °C and 15.4 °C relative to ambient, respectively. CONCLUSION Our design framework produced an implant and electromagnet that could feasibly suspend a knee-ankle-foot prosthesis during short walking bouts. Future work will focus on optimization of this system to reduce heating during longer bouts. SIGNIFICANCE This work demonstrates the initial feasibility of an electromagnetic prosthetic attachment paradigm that has the potential to increase comfort and improve residual limb health for persons with amputation.
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Varaganti P, Seo S. Recent Advances in Biomimetics for the Development of Bio-Inspired Prosthetic Limbs. Biomimetics (Basel) 2024; 9:273. [PMID: 38786483 PMCID: PMC11118077 DOI: 10.3390/biomimetics9050273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 04/29/2024] [Accepted: 04/29/2024] [Indexed: 05/25/2024] Open
Abstract
Recent advancements in biomimetics have spurred significant innovations in prosthetic limb development by leveraging the intricate designs and mechanisms found in nature. Biomimetics, also known as "nature-inspired engineering", involves studying and emulating biological systems to address complex human challenges. This comprehensive review provides insights into the latest trends in biomimetic prosthetics, focusing on leveraging knowledge from natural biomechanics, sensory feedback mechanisms, and control systems to closely mimic biological appendages. Highlighted breakthroughs include the integration of cutting-edge materials and manufacturing techniques such as 3D printing, facilitating seamless anatomical integration of prosthetic limbs. Additionally, the incorporation of neural interfaces and sensory feedback systems enhances control and movement, while technologies like 3D scanning enable personalized customization, optimizing comfort and functionality for individual users. Ongoing research efforts in biomimetics hold promise for further advancements, offering enhanced mobility and integration for individuals with limb loss or impairment. This review illuminates the dynamic landscape of biomimetic prosthetic technology, emphasizing its transformative potential in rehabilitation and assistive technologies. It envisions a future where prosthetic solutions seamlessly integrate with the human body, augmenting both mobility and quality of life.
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Affiliation(s)
| | - Soonmin Seo
- Department of Bionano Technology, Gachon University, Seongnam 13120, Republic of Korea;
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6
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Shrivas S, Samaur H, Yadav V, Boda SK. Soft and Hard Tissue Integration around Percutaneous Bone-Anchored Titanium Prostheses: Toward Achieving Holistic Biointegration. ACS Biomater Sci Eng 2024; 10:1966-1987. [PMID: 38530973 DOI: 10.1021/acsbiomaterials.3c01555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
A holistic biointegration of percutaneous bone-anchored metallic prostheses with both hard and soft tissues dictates their longevity in the human body. While titanium (Ti) has nearly solved osseointegration, soft tissue integration of percutaneous metallic prostheses is a perennial problem. Unlike the firm soft tissue sealing in biological percutaneous structures (fingernails and teeth), foreign body response of the skin to titanium (Ti) leads to inflammation, epidermal downgrowth and inferior peri-implant soft tissue sealing. This review discusses various implant surface treatments/texturing and coatings for osseointegration, soft tissue integration, and against bacterial attachment. While surface microroughness by SLA (sandblasting with large grit and acid etched) and porous calcium phosphate (CaP) coatings improve Ti osseointegration, smooth and textured titania nanopores, nanotubes, microgrooves, and biomolecular coatings encourage soft tissue attachment. However, the inferior peri-implant soft tissue sealing compared to natural teeth can lead to peri-implantitis. Toward this end, the application of smart multifunctional bioadhesives with strong adhesion to soft tissues, mechanical resilience, durability, antibacterial, and immunomodulatory properties for soft tissue attachment to metallic prostheses is proposed.
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Affiliation(s)
- Sangeeta Shrivas
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore 453552, India
| | - Harshita Samaur
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore 453552, India
| | - Vinod Yadav
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore 453552, India
| | - Sunil Kumar Boda
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore 453552, India
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Rehani M, Stafinski T, Round J, Jones CA, Hebert JS. Bone-anchored prostheses for transfemoral amputation: a systematic review of outcomes, complications, patient experiences, and cost-effectiveness. FRONTIERS IN REHABILITATION SCIENCES 2024; 5:1336042. [PMID: 38628292 PMCID: PMC11018971 DOI: 10.3389/fresc.2024.1336042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 02/05/2024] [Indexed: 04/19/2024]
Abstract
Introduction Bone-anchored prostheses (BAP) are an advanced reconstructive surgical approach for individuals who had transfemoral amputation and are unable to use the conventional socket-suspension systems for their prostheses. Access to this technology has been limited in part due to the lag between the start of a new procedure and the availability of evidence that is required before making decisions about widespread provision. This systematic review presents as a single resource up-to-date information on aspects most relevant to decision makers, i.e., clinical efficacy, safety parameters, patient experiences, and health economic outcomes of this technology. Methods A systematic search of the literature was conducted by an information specialist in PubMed, MEDLINE, Embase, CINAHL, Cochrane Library, the Core Collection of Web of Science, CADTH's Grey Matters, and Google Scholar up until May 31, 2023. Peer-reviewed original research articles on the outcomes of clinical effectiveness (health-related quality of life, mobility, and prosthesis usage), complications and adverse events, patient experiences, and health economic outcomes were included. The quality of the studies was assessed using the Oxford Centre for Evidence-Based Medicine Levels of Evidence and ROBINS-I, as appropriate. Results Fifty studies met the inclusion criteria, of which 12 were excluded. Thirty-eight studies were finally included in this review, of which 21 reported on clinical outcomes and complications, 9 case series and 1 cohort study focused specifically on complications and adverse events, and 2 and 5 qualitative studies reported on patient experience and health economic assessments, respectively. The most common study design is a single-arm trial (pre-/post-intervention design) with varying lengths of follow-up. Discussion The clinical efficacy of this technology is evident in selected populations. Overall, patients reported increased health-related quality of life, mobility, and prosthesis usage post-intervention. The most common complication is a superficial or soft-tissue infection, and more serious complications are rare. Patient-reported experiences have generally been positive. Evidence indicates that bone-anchored implants for prosthesis fixation are cost-effective for those individuals who face significant challenges in using socket-suspension systems, although they may offer no additional advantage to those who are functioning well with their socket-suspended prostheses.
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Affiliation(s)
- Mayank Rehani
- Division of Physical Medicine and Rehabilitation, Department of Medicine, Faculty of Medicine and Dentistry, College of Health Sciences, University of Alberta, Edmonton, AB, Canada
| | - Tania Stafinski
- Health Technology and Policy Unit, School of Public Health, College of Health Sciences, University of Alberta, Edmonton, AB, Canada
| | - Jeff Round
- Institute of Health Economics, Edmonton, AB, Canada
| | - C. Allyson Jones
- Department of Physical Therapy, Faculty of Rehabilitation Medicine, College of Health Sciences, University of Alberta, Edmonton, AB, Canada
| | - Jacqueline S. Hebert
- Division of Physical Medicine and Rehabilitation, Department of Medicine, Faculty of Medicine and Dentistry, College of Health Sciences, University of Alberta, Edmonton, AB, Canada
- Glenrose Rehabilitation Hospital, Edmonton, AB, Canada
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8
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Black GG, Vaeth AM, Kochheiser M, Chen Y, Truong AY, Reif T, Rozbruch SR, Henry MW, Otterburn DM. Infection After Lower-Limb Osseointegration: A Single-Center Retrospective Evaluation of Pathogens, Management, and Outcomes. Ann Plast Surg 2024; 92:S96-S100. [PMID: 38556655 DOI: 10.1097/sap.0000000000003856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/02/2024]
Abstract
PURPOSE Osseointegration (OI) is a novel alternative to traditional socket-suspended prostheses for lower-limb amputees, eliminating the socket-skin interface and allowing for weight bearing directly on the skeletal system. However, the stoma through which the implant attaches to the external prosthesis creates an ingress route for bacteria, and infection rates as high as 66% have been reported. The aims of this study are to classify infection management and long-term outcomes in this patient population to maximize implant salvage. METHODS An institutional review board-approved retrospective analysis was performed on all patients who underwent lower-limb OI at our institution between 2017 and 2022. Demographic, operative, and outcome data were collected for all patients. Patients were stratified by the presence and severity of infection. Chi-square and t tests were performed on categorical and continuous data, respectively, using an alpha of 0.05. RESULTS One hundred two patients met our study criteria; 62 had transfemoral OI and 40 had transtibial OI. Patients were followed for 23.8 months on average (range, 3.5-63.7). Osteomyelitis was more likely than soft tissue infection to be polymicrobial in nature (71% vs 23%, P < 0.05). Infections at the stoma were mostly (96%) managed with oral antibiotics alone, whereas deeper soft tissue infections also required intravenous antibiotics (75%) or operative washout (19%). Osteomyelitis was managed with intravenous antibiotics and required operative attention; 5 (71%) underwent washout and 2 (29%) underwent explantation. Both implants were replaced an average of 3.5 months after explantation. There was no correlation between history of soft tissue infection and development of osteomyelitis (P > 0.05). The overall implant salvage rate after infection was 96%. CONCLUSIONS This study describes our institution's experience managing infection after OI and soft tissue reconstruction. Although infections do occur, they are easily treatable and rarely require operative intervention. Explantation due to infection is rare and can be followed up with reimplantation, reaffirming that OI is a safe and effective treatment modality.
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Affiliation(s)
- Grant G Black
- From the Division of Plastic and Reconstructive Surgery, Weill Cornell Medicine
| | - Anna M Vaeth
- From the Division of Plastic and Reconstructive Surgery, Weill Cornell Medicine
| | - Makayla Kochheiser
- From the Division of Plastic and Reconstructive Surgery, Weill Cornell Medicine
| | - Yunchan Chen
- From the Division of Plastic and Reconstructive Surgery, Weill Cornell Medicine
| | - Albert Y Truong
- From the Division of Plastic and Reconstructive Surgery, Weill Cornell Medicine
| | - Taylor Reif
- Limb Lengthening and Complex Reconstruction Service
| | | | - Michael W Henry
- Division of Infectious Diseases, Hospital for Special Surgery, New York, NY
| | - David M Otterburn
- From the Division of Plastic and Reconstructive Surgery, Weill Cornell Medicine
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9
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Tetsworth KD, Welyczko ZH, Quinnan SM. Indications for Nonbiological Reconstruction of Posttraumatic Bone Defects About the Knee. J Orthop Trauma 2024; 38:S23-S29. [PMID: 38502600 DOI: 10.1097/bot.0000000000002764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/05/2024] [Indexed: 03/21/2024]
Abstract
SUMMARY 3D printing and modeling has continued to grow in popularity over the past decade because the technology has matured and become more affordable and widely available. The main indications for nonbiological reconstruction of large bone defects are principally those patients where the candidate is unlikely to be successful if reconstructed by other means. Bespoke, custom, patient-specific implants can be designed to very effectively address bone loss, incorporating design elements that are particular to the needs of any given unique clinical condition. These implants are generally designed as titanium scaffolds that encourage bony incorporation at the host implant junction both proximal and distal. These scaffolds are typically considered a cellular solid, with high porosity that also promotes bone ingrowth directly into the substance of the body of the implant. Titanium scaffolds of this type have become a useful treatment alternative for large segmental bone defects around the knee, especially distal femoral defects. These are often adult patients with local or systemic compromise, or instead they may be too young to be considered candidates for reconstruction using a megaprosthesis. The process requires careful evaluation of individual patients, then matching that patient with the best treatment option, while recognizing the expectations and demands specific to that particular patient. Several cases are presented here to illustrate the variety of indications that can be successfully addressed with this technology, highlighting the quality of the clinical outcome that can be achieved despite the complexity of the pathology encountered.
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Affiliation(s)
- Kevin D Tetsworth
- Department of Orthopaedic Surgery, The Royal Brisbane and Women's Hospital, Brisbane, Australia
- Orthopaedic Research Centre of Australia, Brisbane, Australia
- Herston Biofabrication Institute, Brisbane, Australia
| | - Zhenya H Welyczko
- Department of Orthopaedic Surgery, The Royal Brisbane and Women's Hospital, Brisbane, Australia
- Department of Orthopaedic Surgery, The Princess Alexandra Hospital, Brisbane, Australia; and
| | - Stephen M Quinnan
- The Paley Orthopedic and Spine Institute, St. Mary's Medical Center, West Palm Beach, FL
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10
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Evans AR, Tetsworth K, Quinnan S, Wixted JJ. Transcutaneous osseointegration for amputees. OTA Int 2024; 7:e326. [PMID: 38487401 PMCID: PMC10936159 DOI: 10.1097/oi9.0000000000000326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 12/28/2023] [Accepted: 01/02/2024] [Indexed: 03/17/2024]
Abstract
Transcutaneous osseointegration for amputees (TOFA) is an evolving technology that has the potential to revolutionize the interface between the amputee and their prosthesis, showing potential at many levels of amputation. While no amputation is without its challenges, TOFA requires a highly specialized prosthesis and a multidisciplinary team that includes specialized surgeons, physical therapists, wound care teams, and social workers who guide the amputee through surgery, postoperative rehabilitation, and the chronic wound care that goes into maintaining the prosthesis. The infrastructure required to facilitate care pathways that lead to reliable, successful outcomes are unique in each health care setting, including those in advanced health care systems such as the United States and Australia. This article details the emerging evidence supporting the use of this prosthetic interface design and many of the challenges that providers face when establishing programs to offer this type of care in the United States.
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Affiliation(s)
- Andrew R. Evans
- Orthopedic Trauma Service, Department of Orthopedics, The Warren Alpert School of Medicine, Brown University/Rhode Island Hospital, Providence, RI
| | - Kevin Tetsworth
- Trauma & Limb Reconstruction Unit, Department of Orthopaedics, Royal Brisbane Hospital, Herston, Australia
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Rennie C, Rodriguez M, Futch KN, Krasney LC. Complications Following Osseointegrated Transfemoral and Transtibial Implants: A Systematic Review. Cureus 2024; 16:e57045. [PMID: 38681289 PMCID: PMC11046368 DOI: 10.7759/cureus.57045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 03/27/2024] [Indexed: 05/01/2024] Open
Abstract
Lower limb amputation is a common orthopedic surgery in the United States and can be performed either above or below the knee. Prosthetics are typically externally fitted to the patient's residual stump; however, osseointegrated implants offer a potential alternative to this process. Transcutaneous limb osseointegration involves the intramedullary anchoring of an implant that can later attach to a prosthetic via a stoma in the residual limb. There are proposed benefits to this, including decreased skin and soft tissue complications as well as an increased sense of stability. As this is a relatively new procedure, the complications and efficacy are not well supported by the literature at this time. The primary aim of this analysis was to synthesize the currently available data on transfemoral and transtibial osseointegration in order to improve our understanding of the potential complications of the procedure. A literature search was performed in the following databases: Biomedical Reference Collection, CINAHL, Cochrane Library, and PubMed/MEDLINE. Articles were screened by three independent reviewers for studies written or available in English, study design, and study outcomes, including complications. No filter was applied for publication date, publication national origin, or sample size. A total of 20 articles were selected for the final qualitative analysis. This review demonstrates an overall low or non-inferior rate of both minor and severe complications in transtibial and transfemoral osseointegration. This procedure should be considered as an option during preoperative planning in the context of above-the-knee and below-the-knee amputations. However, continued studies with larger sample sizes and extended postoperative follow-up are necessary for a greater strength of recommendation.
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Affiliation(s)
- Christopher Rennie
- Medicine, Nova Southeastern University Dr. Kiran C. Patel College of Osteopathic Medicine, Clearwater, USA
| | - Melissa Rodriguez
- Medicine, Lincoln Memorial University-DeBusk College of Osteopathic Medicine, Harrogate, USA
| | - Katerina N Futch
- Medicine, Nova Southeastern University Dr. Kiran C. Patel College of Osteopathic Medicine, Clearwater, USA
| | - Leighann C Krasney
- Orthopaedic Surgery, California Pacific Orthopaedics, San Francisco, USA
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Low J, Hoellwarth JS, Akhtar MA, Tetsworth K, Al-Muderis M. Transfemoral amputation versus knee arthrodesis for failed total knee replacement: A systematic review of outcomes. Knee 2024; 47:63-80. [PMID: 38245922 DOI: 10.1016/j.knee.2023.12.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 11/21/2023] [Accepted: 12/18/2023] [Indexed: 01/23/2024]
Abstract
BACKGROUND The options available to salvage a failed total knee replacement (TKR) include transfemoral amputation (TFA) and knee arthrodesis (KA). This systematic review aims to evaluate outcomes following either TFA or KA, comparing ambulatory status, additional subsequent surgery, postoperative infection, pain, health-related quality of life (HRQoL), and mortality rate. METHODS A literature search was conducted in EMBASE, Ovid Medline, and PubMed. Only primary research studies were included and data were independently extracted using a standardized form. The methodological quality of the studies was evaluated using Newcastle-Ottawa Scale. RESULTS Forty-four papers were included, comprising 470 TFA and 1034 KA patients. The methodological quality of the studies was moderate. No TFA versus KA randomized controlled trials could be identified. Pooled data totals via subgroup analyses were performed, owing to inconsistent reporting methods in the included studies. Prosthesis use rate by TFA patients was 157/316 = 49.7%. Significant differences included that TFA patients had lower rates of ambulatory capacity than KA patients (139/294 = 45.6% versus 248/287 = 86.4%, p < 0.001), TFA ambulators were less likely to use an ambulatory aid (55/135 = 40.7% versus 167/232 = 72.0%, p < 0.001), and TFA was associated with a greater postoperative infection rate than KA (29/118 = 24.6% versus 129/650 = 17.2%, p = 0.054). There was a similar rate of revision surgery between TFA and KA (37/183 = 20.2% versus 145/780 = 18.6%, p = 0.612). Data on HRQoL for both TFA and KA were limited, contradictory, and heterogeneous. CONCLUSION No randomized controlled trials comparing TFA versus KA exist;therefore, current data likely reflects substantial selection bias. The currently available evidence suggests that KA patients are significantly more likely to achieve independent bipedal ambulation than TFA patients. In both treatment cohorts, subsequent infection and revision surgery remain a relatively common occurrence.
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Affiliation(s)
- Juin Low
- The University of Edinburgh, Scotland, United Kingdom.
| | - Jason Shih Hoellwarth
- Limb Lengthening and Complex Reconstruction Service, Osseointegration Limb Replacement Centre, Hospital for Special Surgery, New York, United States
| | - Muhammad Adeel Akhtar
- The University of Edinburgh, Scotland, United Kingdom; University of St. Andrews, Scotland, United Kingdom; Department of Trauma and Orthopaedic Surgery, Victoria Hospital Kirkcaldy, Scotland, United Kingdom
| | - Kevin Tetsworth
- Royal Brisbane and Women's Hospital, Brisbane, Australia; University of Queensland School of Medicine, Brisbane, Australia
| | - Munjed Al-Muderis
- The University of Notre Dame Australia, Auburn, New South Wales, Australia; Limb Reconstruction Centre, Macquarie University Hospital, Macquarie Park, Australia
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Alam SH, Hoellwarth J, Tetsworth K, Oomatia A, Taylor T, Al Muderis M. Development of an evidence-based diagnostic algorithm for infection in patients with transcutaneous osseointegration following amputation. J Bone Jt Infect 2024; 9:49-57. [PMID: 38600998 PMCID: PMC11002918 DOI: 10.5194/jbji-9-49-2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 12/21/2023] [Indexed: 04/12/2024] Open
Abstract
Introduction: Transcutaneous osseointegration following amputation (TOFA) confers better mobility and quality of life for most patients versus socket prosthesis rehabilitation. Peri-TOFA infection remains the most frequent complication and lacks an evidence-based diagnostic algorithm. This study's objective was to investigate preoperative factors associated with positive intraoperative cultures among patients suspected of having peri-TOFA infection in order to create an evidence-based diagnostic algorithm. Methods: We conducted a retrospective study of 83 surgeries (70 patients) performed to manage suspected lower-extremity peri-TOFA infection at a specialty orthopedic practice and tertiary referral hospital in a major urban center. The diagnosis of infection was defined as positive intraoperative cultures. Preoperative patient history (fevers, subjective pain, increased drainage), physician examination findings (local cellulitis, purulent discharge, implant looseness), and laboratory data (white blood cell count, C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), and external swab culture) were evaluated for association with subsequent positive intraoperative cultures using regression and area under receiver-operator curve (AUC) modeling. Results: Peri-implant limb pain (highly correlated with infection), ESR > 30 (highly correlated against infection), positive preoperative swab (moderately correlated with infection), gross implant motion (moderately correlated against infection), and erythema or cellulitis of the transcutaneous region (mildly correlated with infection) were variables included in the best AUC model, which achieved an 85 % positive predictive value. Other clinical findings and laboratory values (notably CRP and WBC) were non-predictive of infection. Conclusions: This seminal investigation to develop a preoperative diagnostic algorithm for peri-TOFA infection suggests that the clinical examination remains paramount. Further evaluation of a wider spectrum of clinical, laboratory, and imaging data, consistently and routinely collected with prospective data techniques in larger cohorts of patients, is necessary to create a robust predictive algorithm.
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Affiliation(s)
- Shafaf Hasin Alam
- Princess Alexandra Hospital, 199 Ipswich Rd, Woolloongabba, Queensland, 4102, Australia
| | - Jason S. Hoellwarth
- Limb Lengthening and Complex Reconstruction Service, Osseointegration Limb Replacement Center, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Kevin Tetsworth
- Department of Orthopaedic Surgery, Royal Brisbane and Women's Hospital, Queensland, Australia
| | - Atiya Oomatia
- Limb Reconstruction Centre, Macquarie University Hospital, Macquarie University, Macquarie Park, Australia
| | - Tristen N. Taylor
- Baylor College of Medicine, Houston TX. 1 Baylor Plaza, Houston, TX 77030, USA
| | - Munjed Al Muderis
- Limb Reconstruction Centre, Macquarie University Hospital, Macquarie University, Macquarie Park, Australia
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Barberi F, Anselmino E, Mazzoni A, Goldfarb M, Micera S. Toward the Development of User-Centered Neurointegrated Lower Limb Prostheses. IEEE Rev Biomed Eng 2024; 17:212-228. [PMID: 37639425 DOI: 10.1109/rbme.2023.3309328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
The last few years witnessed radical improvements in lower-limb prostheses. Researchers have presented innovative solutions to overcome the limits of the first generation of prostheses, refining specific aspects which could be implemented in future prostheses designs. Each aspect of lower-limb prostheses has been upgraded, but despite these advances, a number of deficiencies remain and the most capable limb prostheses fall far short of the capabilities of the healthy limb. This article describes the current state of prosthesis technology; identifies a number of deficiencies across the spectrum of lower limb prosthetic components with respect to users' needs; and discusses research opportunities in design and control that would substantially improve functionality concerning each deficiency. In doing so, the authors present a roadmap of patients related issues that should be addressed in order to fulfill the vision of a next-generation, neurally-integrated, highly-functional lower limb prosthesis.
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Sparling T, Iyer L, Pasquina P, Petrus E. Cortical Reorganization after Limb Loss: Bridging the Gap between Basic Science and Clinical Recovery. J Neurosci 2024; 44:e1051232024. [PMID: 38171645 PMCID: PMC10851691 DOI: 10.1523/jneurosci.1051-23.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 08/28/2023] [Accepted: 09/29/2023] [Indexed: 01/05/2024] Open
Abstract
Despite the increasing incidence and prevalence of amputation across the globe, individuals with acquired limb loss continue to struggle with functional recovery and chronic pain. A more complete understanding of the motor and sensory remodeling of the peripheral and central nervous system that occurs postamputation may help advance clinical interventions to improve the quality of life for individuals with acquired limb loss. The purpose of this article is to first provide background clinical context on individuals with acquired limb loss and then to provide a comprehensive review of the known motor and sensory neural adaptations from both animal models and human clinical trials. Finally, the article bridges the gap between basic science researchers and clinicians that treat individuals with limb loss by explaining how current clinical treatments may restore function and modulate phantom limb pain using the underlying neural adaptations described above. This review should encourage the further development of novel treatments with known neurological targets to improve the recovery of individuals postamputation.Significance Statement In the United States, 1.6 million people live with limb loss; this number is expected to more than double by 2050. Improved surgical procedures enhance recovery, and new prosthetics and neural interfaces can replace missing limbs with those that communicate bidirectionally with the brain. These advances have been fairly successful, but still most patients experience persistent problems like phantom limb pain, and others discontinue prostheses instead of learning to use them daily. These problematic patient outcomes may be due in part to the lack of consensus among basic and clinical researchers regarding the plasticity mechanisms that occur in the brain after amputation injuries. Here we review results from clinical and animal model studies to bridge this clinical-basic science gap.
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Affiliation(s)
- Tawnee Sparling
- Department of Physical Medicine and Rehabilitation, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814
| | - Laxmi Iyer
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland 20817
| | - Paul Pasquina
- Department of Physical Medicine and Rehabilitation, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814
| | - Emily Petrus
- Department of Anatomy, Physiology and Genetics, Uniformed Services University, Bethesda, Maryland 20814
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Hoellwarth JS, Reif TJ, Mori S, Kang R, Magro CM. Horrifying Basal Cell Carcinoma Presenting as Progressive Pyoderma Gangrenosum: Case Report. Case Rep Oncol 2024; 17:298-304. [PMID: 38371171 PMCID: PMC10870126 DOI: 10.1159/000536445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 01/18/2024] [Indexed: 02/20/2024] Open
Abstract
Introduction Skin ulcers can be challenging to diagnose and manage, particularly with comorbid autoimmune and gastrointestinal diseases. Occam's razor encourages the simplest explanation to guide care, but reconsideration must occur when intervention proves futile. Case Presentation We report the case of a 70-year-old male, with a 17-year history of expanding pretibial skin ulcer, presumed by prior care providers to be pyoderma gangrenosum related to Crohn's disease. A surgical biopsy performed upon presentation to our institution revealed basal cell carcinoma of the skin, invasive to the proximal tibia with associated deep infection, prompting transfemoral amputation. Conclusion This report is written as a reminder to reconsider a diagnosis and consider seeking additional expertise when a patient's condition progressively worsens despite intervention. Earlier diagnosis likely would have facilitated therapeutic limb salvage care.
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Affiliation(s)
- Jason S. Hoellwarth
- Limb Lengthening and Complex Reconstruction Service, Hospital for Special Surgery, New York, NY, USA
| | - Taylor J. Reif
- Limb Lengthening and Complex Reconstruction Service, Hospital for Special Surgery, New York, NY, USA
| | - Shoko Mori
- Department of Dermatology, Weill Cornell Medicine, New York, NY, USA
| | - Rachel Kang
- Department of Dermatology, Weill Cornell Medicine, New York, NY, USA
| | - Cynthia M. Magro
- Department of Dermatology, Weill Cornell Medicine, New York, NY, USA
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Huynh THN, Kuruvilla DR, Nester MD, Zervoudakis G, Letson GD, Joyce DM, Binitie OT, Lazarides AL. Limb Amputations in Cancer: Modern Perspectives, Outcomes, and Alternatives. Curr Oncol Rep 2023; 25:1457-1465. [PMID: 37999825 DOI: 10.1007/s11912-023-01475-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/07/2023] [Indexed: 11/25/2023]
Abstract
PURPOSE OF REVIEW This review summarizes current findings regarding limb amputation within the context of cancer, especially in osteosarcomas and other bony malignancies. We seek to answer the question of how amputation is utilized in the contemporary management of cancer as well as explore current advances in limb-sparing techniques. RECENT FINDINGS The latest research on amputation has been sparse given its extensive history and application. However, new research has shown that rotationplasty, osseointegration, targeted muscle reinnervation (TMR), and regenerative peripheral nerve interfaces (RPNI) can provide patients with better functional outcomes than traditional amputation. While limb-sparing surgeries are the mainstay for managing musculoskeletal malignancies, limb amputation is useful as a palliative technique or as a primary treatment modality for more complex cancers. Currently, rotationplasty and osseointegration have been valuable limb-sparing techniques with osseointegration continuing to develop in recent years. TMR and RPNI have also been of interest in the modern management of patients requiring full or partial amputations, allowing for better control over myoelectric prostheses.
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Affiliation(s)
- Thien Huong N Huynh
- University of South Florida Health Morsani College of Medicine, Tampa, FL, USA
| | - Davis R Kuruvilla
- University of South Florida Health Morsani College of Medicine, Tampa, FL, USA
| | - Matthew D Nester
- University of South Florida Health Morsani College of Medicine, Tampa, FL, USA
| | | | | | - David M Joyce
- Department of Sarcoma, Moffitt Cancer Center, Tampa, FL, USA
| | - Odion T Binitie
- Department of Sarcoma, Moffitt Cancer Center, Tampa, FL, USA
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Einhorn TA. JBJS Reviews: Celebrating 10 Years of Excellence. JBJS Rev 2023; 11:01874474-202311000-00005. [PMID: 37972213 DOI: 10.2106/jbjs.rvw.23.00212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
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Kamińska M, Jastrzębska A, Walkowiak-Przybyło M, Walczyńska M, Komorowski P, Walkowiak B. Adhesion and Activation of Blood Platelets on Laser-Structured Surfaces of Biomedical Metal Alloys. J Funct Biomater 2023; 14:478. [PMID: 37754892 PMCID: PMC10532272 DOI: 10.3390/jfb14090478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/06/2023] [Accepted: 09/11/2023] [Indexed: 09/28/2023] Open
Abstract
The laser surface modification of metallic implants presents a promising alternative to other surface modification techniques. A total of four alloyed metallic biomaterials were used for this study: medical steel (AISI 316L), cobalt-chromium-molybdenum alloy (CoCrMo) and titanium alloys (Ti6Al4V and Ti6Al7Nb). Samples of metallic biomaterials after machining were subjected to polishing or laser modification in two different versions. The results of surface modification were documented using SEM imaging and roughness measurement. After modification, the samples were sterilized with dry hot air, then exposed to citrate blood, washed with PBS buffer, fixed with glutaraldehyde, sputtered with a layer of gold and imaged using SEM to enable the quantification of adhered, activated and aggregated platelets on the surface of biomaterial samples. The average total number, counted in the field of view, of adhered platelets on the surfaces of the four tested biomaterials, regardless of the type of modification, did not differ statistically significantly (66 ± 81, 67 ± 75, 61 ± 70 and 57 ± 61 for AISI 316L, CoCrMo, Ti6Al4V and Ti6Al7Nb, respectively) and the average number of platelet aggregates was statistically significantly higher (p < 0.01) on the surfaces of AISI 316L medical steel (42 ± 53) and of the CoCrMo alloy (42 ± 52) compared to the surfaces of the titanium alloys Ti6Al4V (33 ± 39) and Ti6Al7Nb (32 ± 37). Remaining blood after contact was used to assess spontaneous platelet activation and aggregation in whole blood by flow cytometry. An in-depth analysis conducted on the obtained results as a function of the type of modification indicates small but statistically significant differences in the interaction of platelets with the tested surfaces of metallic biomaterials.
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Affiliation(s)
- Marta Kamińska
- Department of Biophysics, Institute of Materials Science and Engineering, Lodz University of Technology, Stefanowskiego 1/15, 90-537 Lodz, Poland; (M.K.)
| | - Aleksandra Jastrzębska
- Department of Biophysics, Institute of Materials Science and Engineering, Lodz University of Technology, Stefanowskiego 1/15, 90-537 Lodz, Poland; (M.K.)
| | - Magdalena Walkowiak-Przybyło
- Department of Biophysics, Institute of Materials Science and Engineering, Lodz University of Technology, Stefanowskiego 1/15, 90-537 Lodz, Poland; (M.K.)
- Aflofarm Farmacja Polska Sp. z o.o., 95-200 Pabianice, Poland
| | - Marta Walczyńska
- Department of Biophysics, Institute of Materials Science and Engineering, Lodz University of Technology, Stefanowskiego 1/15, 90-537 Lodz, Poland; (M.K.)
- Department of Medical Imaging Techniques, Medical University of Lodz, Lindley 6, 90-131 Lodz, Poland
| | - Piotr Komorowski
- Department of Biophysics, Institute of Materials Science and Engineering, Lodz University of Technology, Stefanowskiego 1/15, 90-537 Lodz, Poland; (M.K.)
- Bionanopark Laboratories, Bionanopark Sp. z o.o., Dubois 114/116, 93-465 Lodz, Poland
| | - Bogdan Walkowiak
- Department of Biophysics, Institute of Materials Science and Engineering, Lodz University of Technology, Stefanowskiego 1/15, 90-537 Lodz, Poland; (M.K.)
- Bionanopark Laboratories, Bionanopark Sp. z o.o., Dubois 114/116, 93-465 Lodz, Poland
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Haidary A, Hoellwarth JS, Tetsworth K, Oomatia A, Al Muderis M. Transcutaneous osseointegration for amputees with burn trauma. Burns 2023; 49:1052-1061. [PMID: 36907716 DOI: 10.1016/j.burns.2023.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 02/14/2023] [Accepted: 02/19/2023] [Indexed: 03/12/2023]
Abstract
OBJECTIVE Transcutaneous osseointegration for amputees (TOFA) surgically implants a prosthetic anchor into the residual limb's bone, enabling direct skeletal connection to a prosthetic limb and eliminating the socket. TOFA has demonstrated significant mobility and quality of life benefits for most amputees, but concerns regarding its safety for patients with burned skin have limited its use. This is the first report of the use of TOFA for burned amputees. METHODS Retrospective chart review was performed of five patients (eight limbs) with a history of burn trauma and subsequent osseointegration. The primary outcome was adverse events such as infection and additional surgery. Secondary outcomes included mobility and quality of life changes. RESULTS The five patients (eight limbs) had an average follow-up time of 3.8 ± 1.7 (range 2.1-6.6) years. We found no issues of skin compatibility or pain associated with the TOFA implant. Three patients underwent subsequent surgical debridement, one of whom had both implants removed and eventually reimplanted. K-level mobility improved (K2 +, 0/5 vs 4/5). Other mobility and quality of life outcomes comparisons are limited by available data. CONCLUSION TOFA is safe and compatible for amputees with a history of burn trauma. Rehabilitation capacity is influenced more by the patient's overall medical and physical capacity than their specific burn injury. Judicious use of TOFA for appropriately selected burn amputees seems safe and merited.
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Affiliation(s)
- Amanullah Haidary
- Western Sydney University School of Medicine, Building 30 Campbelltown Campus, Campbelltown, NSW, Australia.
| | - Jason S Hoellwarth
- Limb Lengthening and Complex Reconstruction Service, Osseointegration Limb Replacement Center, Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021, USA.
| | - Kevin Tetsworth
- Department of Orthopaedic Surgery, Royal Brisbane and Women's Hospital, Queensland, Australia.
| | - Atiya Oomatia
- Limb Reconstruction Centre, Macquarie University Hospital, Macquarie University, Macquarie Park, Australia.
| | - Munjed Al Muderis
- Limb Reconstruction Centre, Macquarie University Hospital, Macquarie University, Macquarie Park, Australia.
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Hoellwarth JS, Oomatia A, Tetsworth K, Vrazas E, Al Muderis M. Bone density changes after five or more years of unilateral lower extremity osseointegration: Observational cohort study. Bone Rep 2023; 18:101682. [PMID: 37205925 PMCID: PMC10189091 DOI: 10.1016/j.bonr.2023.101682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 04/25/2023] [Accepted: 04/27/2023] [Indexed: 05/21/2023] Open
Abstract
Context Rehabilitation following lower extremity amputation presents multiple challenges, many related to the traditional prosthesis (TP) socket. Without skeletal loading, bone density also rapidly decreases. Transcutaneous osseointegration for amputees (TOFA) surgically implants a metal prosthesis attachment directly into the residual bone, facilitating direct skeletal loading. Quality of life and mobility are consistently reported to be significantly superior with TOFA than TP. Objective To investigate how femoral neck bone mineral density (BMD, g/cm2) changes for unilateral transfemoral and transtibial amputees at least five years following single-stage press-fit osseointegration. Methods Registry review was performed of five transfemoral and four transtibial unilateral amputees who had dual x-ray absorptiometry (DXA) performed preoperatively and after at least five years. The average BMD was compared using Student's t-test (significance p < .05). First, all nine Amputated versus Intact limbs. Second, the five patients with local disuse osteoporosis (ipsilateral femoral neck T-score < -2.5) versus the four whose T-score was greater than -2.5. Results The average Amputated Limb BMD was significantly less than the Intact Limb, both Before Osseointegration (0.658 ± 0.150 vs 0.929 ± 0.089, p < .001) and After Osseointegration (0.720 ± 0.096 vs 0.853 ± 0.116, p = .018). The Intact Limb BMD decreased significantly during the study period (0.929 ± 0.089 to 0.853 ± 0.116, p = .020), while the Amputated Limb BMD increased a not statistically significant amount (0.658 ± 0.150 to 0.720 ± 0.096, p = .347). By coincidence, all transfemoral amputees had local disuse osteoporosis (BMD 0.545 ± 0.066), and all transtibial patients did not (BMD 0.800 ± 0.081, p = .003). The local disuse osteoporosis cohort eventually had a greater average BMD (not statistically significant) than the cohort without local disuse osteoporosis (0.739 ± 0.100 vs 0.697 ± 0.101, p = .556). Conclusions Single-stage press-fit TOFA may facilitate significant BMD improvement to unilateral lower extremity amputees with local disuse osteoporosis.
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Affiliation(s)
- Jason Shih Hoellwarth
- Limb Lengthening and Complex Reconstruction Service, Osseointegration Limb Replacement Center, Hospital for Special Surgery, 535 East 70th Street, New York 10021, NY, USA
- Corresponding author.
| | - Atiya Oomatia
- Limb Reconstruction Centre, Macquarie University Hospital, Macquarie University, Macquarie Park, Australia
| | - Kevin Tetsworth
- Department of Orthopaedic Surgery, Royal Brisbane and Women's Hospital, Queensland, Australia
| | - Elisabeth Vrazas
- Macquarie School of Medicine Macquarie University, Suite 305, Level 3/2 Technology Pl, Macquarie Park, NSW 2109, Australia
| | - Munjed Al Muderis
- Limb Reconstruction Centre, Macquarie University Hospital, Macquarie University, Macquarie Park, Australia
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Welke B, Hurschler C, Schwarze M, Jakubowitz E, Aschoff HH, Örgel M. Comparison of conventional socket attachment and bone-anchored prosthesis for persons living with transfemoral amputation - mobility and quality of life. Clin Biomech (Bristol, Avon) 2023; 105:105954. [PMID: 37075546 DOI: 10.1016/j.clinbiomech.2023.105954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 03/29/2023] [Accepted: 04/12/2023] [Indexed: 04/21/2023]
Abstract
BACKGROUND For patients with transfemoral amputation experiencing issues with their sockets, bone-anchored prosthesis systems are an alternative and sometimes the only way to be mobile and independent. The present cross-sectional study aimed to investigate the gait performance and quality of life of a group of patients treated with bone-anchored systems compared to those of participants treated with a conventional socket-suspended prosthesis. METHODS A total of 17 participants with a socket-suspended and 20 with a bone-anchored prosthesis were included. Gait patterns were examined for symmetry, and performance was assessed using the six-minute walk test and the timed "Up & Go" test. Magnetic resonance imaging was performed to detect signs of osteoarthritis in both hips. Mobility in everyday life and quality of life were assessed using questionnaires. FINDINGS There were no differences between the groups regarding the quality of life, daily mobility, and gait performance. The step width was significantly higher for the patients using socket-suspended prosthesis. The socket-suspended group showed a significant asymmetry regarding the step length. In the socket-suspended group, the prosthetic leg showed significantly higher cartilage abrasion than the contralateral leg did. INTERPRETATION Large differences in the measured outcomes in both groups illustrate the very different capabilities of the individual participants, which is apparently not primarily determined by the type of treatment. For patients who are satisfied with the socket treatment and perform well, bone-anchored prosthesis systems may not necessarily improve their functional capabilities and perceived quality of life.
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Affiliation(s)
- Bastian Welke
- Laboratory for Biomechanics and Biomaterials, Department of Orthopaedics, Hannover Medical School, Carl-Neuberg-Str. 1, Hannover 30625, Germany.
| | - Christof Hurschler
- Laboratory for Biomechanics and Biomaterials, Department of Orthopaedics, Hannover Medical School, Carl-Neuberg-Str. 1, Hannover 30625, Germany.
| | - Michael Schwarze
- Laboratory for Biomechanics and Biomaterials, Department of Orthopaedics, Hannover Medical School, Carl-Neuberg-Str. 1, Hannover 30625, Germany.
| | - Eike Jakubowitz
- Laboratory for Biomechanics and Biomaterials, Department of Orthopaedics, Hannover Medical School, Carl-Neuberg-Str. 1, Hannover 30625, Germany.
| | - Horst-Heinrich Aschoff
- Department of Trauma, Hannover Medical School, Carl-Neuberg-Str. 1, Hannover 30625, Germany.
| | - Marcus Örgel
- Department of Trauma, Hannover Medical School, Carl-Neuberg-Str. 1, Hannover 30625, Germany.
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Hoellwarth JS, Tetsworth K, Akhtar MA, Al Muderis M. Transcutaneous Osseointegration for Amputees: What Is It, How Did It Evolve, and What May Develop? CURRENT PHYSICAL MEDICINE AND REHABILITATION REPORTS 2023. [DOI: 10.1007/s40141-023-00376-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Vernice NA, Askinas CA, Black GG, Truong AY, Reif TJ, Rozbruch SR, Otterburn DM. Osseointegration for Lower-Extremity Amputees: Operative Considerations from the Plastic Surgeon's Perspective. JBJS Rev 2022; 10:01874474-202211000-00003. [PMID: 36574447 PMCID: PMC10979937 DOI: 10.2106/jbjs.rvw.22.00125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
➢ Osseointegration for lower-extremity amputees, while increasing in frequency, remains in its relative infancy compared with traditional socket-based prostheses. ➢ Ideal candidates for osseointegration have documented failure of a traditional prosthesis and should be skeletally mature, have adequate bone stock, demonstrate an ability to adhere to a longitudinal rehabilitation protocol, and be in an otherwise good state of health. ➢ Lowering the reoperation rate for soft-tissue complications depends heavily on surgical technique and on the implant device itself; the current gold standard involves a smooth implant surface for dermal contact as well as maximal skin resection to prevent skin breakdown against the prosthesis. This may include the need for thighplasty to optimize skin reduction. ➢ Interdisciplinary peripheral nerve management, such as targeted muscle reinnervation, performed in tandem with a plastic surgery team can treat existing and prevent future symptomatic neuromas, ultimately improving pain outcomes.
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Affiliation(s)
- Nicholas A Vernice
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Weill Cornell Medicine, New York, NY
| | - Carly A Askinas
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Weill Cornell Medicine, New York, NY
| | - Grant G Black
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Weill Cornell Medicine, New York, NY
| | - Albert Y Truong
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Weill Cornell Medicine, New York, NY
| | - Taylor J Reif
- Department of Limb Lengthening and Complex Reconstruction, Hospital for Special Surgery, New York, NY
| | - S Robert Rozbruch
- Department of Limb Lengthening and Complex Reconstruction, Hospital for Special Surgery, New York, NY
| | - David M Otterburn
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Weill Cornell Medicine, New York, NY
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Hoellwarth JS, Tetsworth K, Oomatia A, Akhtar MA, Xu H, Al Muderis M. Association Between Osseointegration of Lower Extremity Amputation and Mortality Among Adults. JAMA Netw Open 2022; 5:e2235074. [PMID: 36227599 PMCID: PMC9561949 DOI: 10.1001/jamanetworkopen.2022.35074] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
IMPORTANCE Transcutaneous osseointegration post amputation (TOPA) creates a direct linkage between residual bone and an external prosthetic limb, providing superior mobility and quality of life compared with a socket prosthesis. The causes and potential risks of mortality after TOPA have not been investigated. OBJECTIVE To investigate the association between TOPA and mortality and assess the potential risk factors. DESIGN, SETTING, AND PARTICIPANTS This observational cohort study included all patients with amputation of a lower extremity who underwent TOPA between November 1, 2010, and October 31, 2021, at a specialty orthopedic practice and tertiary referral hospital in a major urban center. Patients lived on several continents and were followed up as long as 10 years. EXPOSURES Transcutaneous osseointegration post amputation, consisting of a permanent intramedullary implant passed transcutaneously through a stoma and connected to an external prosthetic limb. MAIN OUTCOMES AND MEASURES Death due to any cause. The hypotheses tested-that patient variables (sex, age, level of amputation, postosseointegration infection, and amputation etiology) may be associated with subsequent mortality-were formulated after initial data collection identifying which patients had died. RESULTS A total of 485 patients were included in the analysis (345 men [71.1%] and 140 women [28.9%]), with a mean (SD) age at osseointegration of 49.1 (14.6) years among living patients or 61.2 (12.4) years among patients who had died. Nineteen patients (3.9%) died a mean (SD) of 2.2 (1.7) years (range, 58 days to 5 years) after osseointegration, including 17 (3.5%) who died of causes unrelated to osseointegration (most commonly cardiac issues) and 2 (0.4%) who died of direct osseointegration-related complications (infectious complications), of which 1 (0.2%) was coclassified as a preexisting health problem exacerbated by osseointegration (myocardial infarction after subsequent surgery to manage infection). No deaths occurred intraoperatively or during inpatient recuperation or acute recovery after index osseointegration (eg, cardiopulmonary events). Kaplan-Meier survival analysis with log-rank comparison and Cox proportional hazards regression modeling identified increased age (hazard ratio, 1.06 [95% CI, 1.02-1.09]) and vascular (odds ratio [OR], 4.73 [95% CI, 1.35-16.56]) or infectious (OR, 3.87 [95% CI, 1.31-11.40]) amputation etiology as risk factors. Notable factors not associated with mortality risk included postosseointegration infection and male sex. CONCLUSIONS AND RELEVANCE These findings suggest that patients who have undergone TOPA rarely die of problems associated with the procedure but instead usually die of unrelated causes.
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Affiliation(s)
- Jason Shih Hoellwarth
- Limb Salvage and Amputation Reconstruction Center, Hospital for Special Surgery, New York, New York
| | - Kevin Tetsworth
- Department of Orthopaedic Surgery, Royal Brisbane and Women’s Hospital, Queensland, Australia
| | - Atiya Oomatia
- Limb Reconstruction Centre, Macquarie University Hospital, Macquarie University, Macquarie Park, Australia
| | - Muhammad Adeel Akhtar
- Trauma and Orthopaedic Department, Victoria Hospital Kirkcaldy, NHS (National Health Service) Fife, Kirkcaldy, Scotland
| | - Haikun Xu
- Inter-American Tropical Tuna Commission, La Jolla, California
| | - Munjed Al Muderis
- Limb Reconstruction Centre, Macquarie University Hospital, Macquarie University, Macquarie Park, Australia
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Wankier Z, Taylor C, Drew A, Kubiak E, Agarwal J, Sinclair S. Use of computer tomography imaging for analyzing bone remodeling around a percutaneous osseointegrated implant. J Orthop Res 2022; 40:2065-2075. [PMID: 34910325 DOI: 10.1002/jor.25247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 12/01/2021] [Accepted: 12/11/2021] [Indexed: 02/04/2023]
Abstract
Osseointegration (OI) is being used for the direct skeletal attachment of prosthetic limbs using an intramedullary stem that extends percutaneously from the subject's residual limb. For this technology to be successful, bone ingrowth and remodeling around the implant must occur. Physicians need an effective way to assess bone remodeling to make informed treatment and rehabilitation decisions. Previous studies utilizing two-dimensional imaging X-ray as a tool to monitor bone-remodeling around OI devices have limitations. This study describes methodology that was developed utilizing computed tomography (CT) imaging as a tool for analyzing bone remodeling around a percutaneous OI implant. Six transfemoral amputees implanted with a percutaneous osseointegrated prosthesis (POP) had CT scans taken of their residual femur at 6 and 52 weeks postoperatively. Three-dimensional femoral models were processed using custom MATLAB script to collect cortical and medullary morphology measurements. Morphology data from 6- and 52-week scans were compared to quantify bone remodeling around the POP implant. Fifty-two weeks after implantation of the POP device, increases in cortical bone area and thickness were observed around the porous-coated stem. Minimal changes were observed in the medullary canal parameters within the periprosthetic regions. This study successfully utilized CT imaging and three-dimensional modeling techniques to analyze longitudinal data of bone remodeling around a transfemoral percutaneous implant. These methods have the potential to be used as a clinical tool for evaluating orthopedic implants in vivo. Data collected suggests that the POP device achieved the desired bone remodeling around the porous-coated region of the implanted stem.
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Affiliation(s)
- Zakary Wankier
- Department of Orthopaedics, University of Utah, Salt Lake City, Utah, USA
| | - Carolyn Taylor
- Department of Orthopaedics, University of Utah, Salt Lake City, Utah, USA
| | - Alex Drew
- Department of Orthopaedics, University of Utah, Salt Lake City, Utah, USA
| | - Erik Kubiak
- Department of Orthopaedics, University of Utah, Salt Lake City, Utah, USA.,Department of Orthopedic Surgery, University of Nevada Las Vegas, Las Vegas, Nevada, USA.,George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah, USA
| | - Jayant Agarwal
- George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah, USA.,Division of Plastic Surgery, Salt Lake City, Utah, USA
| | - Sarina Sinclair
- Department of Orthopaedics, University of Utah, Salt Lake City, Utah, USA.,George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah, USA
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Krause K, Richter K, Beyer T, Aschoff HH, Fischer DC, Mittlmeier T. Elective transfemoral amputation and simultaneous implantation of a transcutaneous osseointegrated prosthesis stem as salvage treatment after knee joint arthrodesis with poor function: A case report. Front Surg 2022; 9:918303. [PMID: 36111228 PMCID: PMC9469837 DOI: 10.3389/fsurg.2022.918303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 07/22/2022] [Indexed: 11/13/2022] Open
Abstract
Background Surgical reconstruction of anterior cruciate ligament ruptures is a well-established procedure, and although it is for the vast majority of patients without severe complications, total knee joint arthroplasty, arthrodesis of the knee, and finally transfemoral amputation have to be considered in the worst-case scenario. The case We report a case of a patient with a 13-year history of recurrent failure after anterior cruciate ligament reconstruction. She claimed she had severely impaired mobility secondary to a knee joint arthrodesis via an Ilizarov circular frame 2 years ago and chronic immobilizing pain, making a permanent medication with opioids necessary. She was aware of the therapeutic options and asked for transfemoral amputation and concomitant supply with a transcutaneous osseointegrated prosthesis system (TOPS). Procedures After careful evaluation and clinical work-up, the indication for transfemoral amputation and concomitant implantation of the prosthetic stem into the femoral cavity was secured. Six weeks after the creation of the stoma for coupling of the artificial limb and onset of physiotherapy, balance and gait training were scheduled. Full weight-bearing and walking without crutches were allowed 12 weeks after the index procedure. This sequence of events was paralleled by a series of pre-defined examinations, that is, questionnaires and mobility scores addressing the situation of transfemoral amputees, as well as standardized clinical gait analysis. The latter was performed before surgery and 6, 9, and 18 months after the index procedure. Outcome At the time of the index procedure, opioids could be tapered to zero, and the patient quickly regained her walking abilities during the rehabilitation period. Clinical gait analysis confirmed the restoration of bilateral symmetry by mutual approximation of kinematics and kinetics to a standard gait pattern. Conclusion The outcome of our patient strengthens the therapeutic potential of a unilateral transfemoral amputation in combination with TOPS. Nevertheless, long-term follow-up is necessary to detect future complications of this approach.
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Affiliation(s)
- Katharina Krause
- Department of Traumatology, Hand and Reconstructive Surgery, University Medical Centre Rostock, Rostock, Germany
- Department of Pediatrics, University Medical Centre Rostock, Rostock, Germany
| | - Katherina Richter
- Department of Traumatology, Hand and Reconstructive Surgery, University Medical Centre Rostock, Rostock, Germany
- Department of Pediatrics, University Medical Centre Rostock, Rostock, Germany
| | - Thomas Beyer
- Department of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Centre Rostock, Rostock, Germany
| | - Horst Heinrich Aschoff
- Department of Traumatology, Hand and Reconstructive Surgery, University Medical Centre Rostock, Rostock, Germany
| | | | - Thomas Mittlmeier
- Department of Traumatology, Hand and Reconstructive Surgery, University Medical Centre Rostock, Rostock, Germany
- Correspondence: Thomas Mittlmeier
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Akhtar MA, Hoellwarth JS, Tetsworth K, Oomatia A, Al Muderis M. Osseointegration Following Transfemoral Amputation After Infected Total Knee Replacement: A Case Series of 10 Patients With a Mean Follow-up of 5 Years. Arthroplast Today 2022; 16:21-30. [PMID: 35620587 PMCID: PMC9126745 DOI: 10.1016/j.artd.2022.04.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/18/2022] [Accepted: 04/12/2022] [Indexed: 12/01/2022] Open
Affiliation(s)
- Muhammad Adeel Akhtar
- Trauma and Orthopaedic Department, Victoria Hospital Kirkcaldy, NHS Fife, Kirkcaldy, Scotland, UK
| | - Jason Shih Hoellwarth
- Limb Salvage and Amputation Reconstruction Center, Hospital for Special Surgery, New York, NY, USA
- Corresponding author. Limb Salvage and Amputation Reconstruction Center, 535 East 70th Street, Hospital for Special Surgery, New York, NY 10021, USA. Tel.: +1 212 606 1000.
| | - Kevin Tetsworth
- Department of Orthopaedic Surgery, Royal Brisbane and Women’s Hospital, Queensland, Australia
| | - Atiya Oomatia
- Limb Reconstruction Centre, Macquarie University Hospital, Macquarie University, Macquarie Park, Australia
| | - Munjed Al Muderis
- Limb Reconstruction Centre, Macquarie University Hospital, Macquarie University, Macquarie Park, Australia
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Hoellwarth J, Reif T, Henry M, Miller A, Kaidi A, Rozbruch S. Unexpected positive intraoperative cultures (UPIC) at index osseointegration do not lead to increased postoperative infectious events. J Bone Jt Infect 2022; 7:155-162. [PMID: 35937089 PMCID: PMC9350876 DOI: 10.5194/jbji-7-155-2022] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 02/28/2022] [Indexed: 11/11/2022] Open
Abstract
Introduction: The most common complication following transcutaneous
osseointegration for amputees is infection. Although an obvious source of
contamination is the permanent stoma, operative site contamination at the time
of implantation may be an additional source. This study investigates the impact
of unexpected positive intraoperative cultures (UPIC) on postoperative
infection. Methods: Charts were reviewed for 8 patients with UPIC
and 22 patients with negative intraoperative cultures (NIC) who had at least 1
year of post-osseointegration follow-up. All patients had 24 h of routine
postoperative antibiotic prophylaxis, with UPIC receiving additional antibiotics
guided by culture results. The main outcome measure was postoperative infection
intervention, which was graded as (0) none, (1) antibiotics unrelated to the
initial surgery, (2) operative debridement with implant retention, or (3)
implant removal. Results: The UPIC vs. NIC rate of infection
management was as follows: Grade 0, 6/8 = 75 % vs. 14/22 = 64 %, p= 0.682; Grade 1, 2/8 = 25 % vs. 8/22 = 36.4 % (Fisher's p= 0.682); Grade 2, 1/8 = 12.5 % vs. 0/22 = 0 % (Fisher's p= 0.267); Grade 3, 0/8 = 0 % vs. 1/22 = 4.5 % (Fisher's p= 1.000). No differences were statistically significant.
Conclusions: UPIC at index osseointegration, managed with
directed postoperative antibiotics, does not appear to increase the risk of
additional infection management. The therapeutic benefit of providing additional
directed antibiotics versus no additional antibiotics following UPIC is unknown
and did not appear to increase the risk of other adverse outcomes in our
cohort.
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Affiliation(s)
- Jason S. Hoellwarth
- Limb Lengthening and Complex Reconstruction Service, Hospital for
Special Surgery, Weill Cornell Medical College, 535 East 70th Street, New
York, NY 10021, USA
| | - Taylor J. Reif
- Limb Lengthening and Complex Reconstruction Service, Hospital for
Special Surgery, Weill Cornell Medical College, 535 East 70th Street, New
York, NY 10021, USA
| | - Michael W. Henry
- Infectious Disease Service, Hospital for Special Surgery, Weill
Cornell Medical College, 535 East 70th Street, New York, NY 10021,
USA
| | - Andy O. Miller
- Infectious Disease Service, Hospital for Special Surgery, Weill
Cornell Medical College, 535 East 70th Street, New York, NY 10021,
USA
| | - Austin C. Kaidi
- Limb Lengthening and Complex Reconstruction Service, Hospital for
Special Surgery, Weill Cornell Medical College, 535 East 70th Street, New
York, NY 10021, USA
| | - S. Robert Rozbruch
- Limb Lengthening and Complex Reconstruction Service, Hospital for
Special Surgery, Weill Cornell Medical College, 535 East 70th Street, New
York, NY 10021, USA
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Hoellwarth JS, Rozbruch SR. Periprosthetic Femur Fractures in Osseointegration Amputees: A Report of 2 Cases Using a Modified Traction Technique. JBJS Case Connect 2022; 12:01709767-202209000-00021. [PMID: 36017956 DOI: 10.2106/jbjs.cc.21.00778] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
CASES Two patients with periprosthetic femur fracture proximal to a femoral osseointegration had surgical stabilization. These cases produced operative challenges because commonly used intraoperative traction methods cannot be used for patients with transfemoral osseointegration. CONCLUSION We describe a novel technique to apply traction and rotation to the osseointegrated extremity: using the implant's antirotation propeller handle. This allows for an otherwise familiar technique to be used for fracture fixation: open reduction with internal fixation using a proximal femur hook plate and eccentric peri-implant screws.
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Affiliation(s)
- Jason Shih Hoellwarth
- Limb Salvage and Amputation Reconstruction Center, Hospital for Special Surgery, New York, New York
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Hoellwarth JS, Reif TJ, Rozbruch SR. Revision Amputation with Press-Fit Osseointegration for Transfemoral Amputees. JBJS Essent Surg Tech 2022; 12:ST-D-21-00068. [PMID: 36741033 PMCID: PMC9889284 DOI: 10.2106/jbjs.st.21.00068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Press-fit transfemoral osseointegration is the technique of inserting an intramedullary metal implant into the residual femur of an amputee; the implant is passed transcutaneously to attach to a standard prosthesis that includes a knee, tibia, ankle, and foot. This allows the prosthesis to be skeletally anchored, eliminating socket-related problems such as tissue compression that can provoke neurogenic pain, skin abrasion, and fitting problems resulting from residual limb size fluctuation1. Amputees with osseointegrated prostheses typically wear their prosthesis more and experience better mobility, quality of life, and extremity proprioception compared to those with socket prostheses2-4. Description We demonstrate the fundamentals of a single-stage procedure involving an impacted press-fit porous-coated titanium osseointegration implant. The preoperative evaluation is summarized and the specific surgical steps are described: exposure, osteotomy, canal preparation, implant insertion, (optional) targeted muscle reinnervation, muscle closure, soft-tissue contouring and stoma creation, and abutment insertion. Alternatives Amputees who are dissatisfied with their quality of life or mobility when using a socket prosthesis can attempt to modify their socket or activity level or accept their situation. Non-osseointegration surgical options to try to improve socket fit include bone lengthening and/or soft-tissue contouring. An alternative design is a screw-type osseointegration implant1. Rationale Press-fit osseointegration can be provided for amputees having difficulty with socket wear5. Press-fit osseointegration usually provides superior mobility and quality of life compared with nonoperative and other operative options for patients expressing dissatisfaction for reasons such as those mentioned above, including poor fit, compromised energy transfer, skin pinching, compression, and abrasions. Expected Outcomes Review articles describing the clinical outcomes of osseointegration consistently suggest that patients have improved prosthesis wear time, mobility, and quality of life compared with patients with a socket prosthesis3,4. In a recent study2 of 18 femoral and 13 tibial amputees who had osseointegration, Reif et al. showed significant improvements in prosthesis wear time, mobility, and multiple quality-of-life surveys at a mean follow-up of nearly 2 years. The most common postoperative complication for this procedure is low-grade soft-tissue infection, which is usually managed by a short course of oral antibiotics. Much less often, soft-tissue debridement or implant removal may be needed to manage infection. Periprosthetic fractures can nearly always be managed with familiar fracture fixation techniques and implant retention6. Important Tips Template and choose an implant with an optimal diameter that encroaches the inner cortex at the narrowest bone diameter; an implant that is too wide may not fit without causing a large fracture, and an implant that is too narrow may fall out. Do not cement the implant7.Ideally, the abutment of the implant should rest against a flat transverse bone end with cortical contact and leave the correct amount of room for the prosthetic knee so that it matches the height of the contralateral knee; avoid inserting an implant too distally or in too wide a metaphyseal flare.Gentle impaction pressure is necessary and small contained distal fractures are acceptable, but avoid causing a propagating fracture. Do not place cerclage cables or loose bone graft at these small fracture sites.Avoid the use of a tourniquet during intramedullary reaming to prevent potential heat-induced osteonecrosis.Nerve surgery such as targeted muscle reinnervation, if indicated, can be performed in the same surgical episode as the osseointegration.The muscles should be closed at the bone-implant interface with use of a tight purse string in order to provide a vascularized tissue barrier against bacterial ingress8.The skin surrounding the stoma should have unnecessary fat removed, but not excess removal leading to skin necrosis. The skin fascia should be sutured to the muscle surrounding the stoma to stabilize the peri-stomal skin.Soft-tissue contouring is needed to achieve the optimal soft-tissue tension around the stoma and abutment. Single-stage surgery has a distinct advantage in this regard. Acronyms and Abbreviations MVA = motor vehicle accidentAP = anteroposteriorCT = computed tomographyTMR = targeted muscle reinnervationQTFA = Questionnaire for Persons with a Transfemoral AmputationEQ-5D = EuroQol 5 DimensionsLD-SRS = Limb Deformity-Scoliosis Research Society (questionnaire)PROMIS = Patient-Reported Outcomes Measurement Information System.
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Affiliation(s)
- Jason S. Hoellwarth
- Limb Lengthening and Complex Reconstruction Service, Osseointegration Limb Replacement Center, Hospital for Special Surgery, New York, NY,Email for corresponding author:
| | - Taylor J. Reif
- Limb Lengthening and Complex Reconstruction Service, Osseointegration Limb Replacement Center, Hospital for Special Surgery, New York, NY
| | - S. Robert Rozbruch
- Limb Lengthening and Complex Reconstruction Service, Osseointegration Limb Replacement Center, Hospital for Special Surgery, New York, NY
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Karczewski AM, Zeng W, Stratchko LM, Bachus KN, Poore SO, Dingle AM. Clinical Basis for Creating an Osseointegrated Neural Interface. Front Neurosci 2022; 16:828593. [PMID: 35495044 PMCID: PMC9039253 DOI: 10.3389/fnins.2022.828593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 03/16/2022] [Indexed: 11/13/2022] Open
Abstract
As technology continues to improve within the neuroprosthetic landscape, there has been a paradigm shift in the approach to amputation and surgical implementation of haptic neural prosthesis for limb restoration. The Osseointegrated Neural Interface (ONI) is a proposed solution involving the transposition of terminal nerves into the medullary canal of long bones. This design combines concepts of neuroma formation and prevention with osseointegration to provide a stable environment for conduction of neural signals for sophisticated prosthetic control. While this concept has previously been explored in animal models, it has yet to be explored in humans. This anatomic study used three upper limb and three lower limb cadavers to assess the clinical feasibility of creating an ONI in humans. Anatomical measurement of the major peripheral nerves- circumference, length, and depth- were performed as they are critical for electrode design and rerouting of the nerves into the long bones. CT imaging was used for morphologic bone evaluation and virtual implantation of two osseointegrated implants were performed to assess the amount of residual medullary space available for housing the neural interfacing hardware. Use of a small stem osseointegrated implant was found to reduce bone removal and provide more intramedullary space than a traditional implant; however, the higher the amputation site, the less medullary space was available regardless of implant type. Thus the stability of the endoprosthesis must be maximized while still maintaining enough residual space for the interface components. The results from this study provide an anatomic basis required for establishing a clinically applicable ONI in humans. They may serve as a guide for surgical implementation of an osseointegrated endoprosthesis with intramedullary electrodes for prosthetic control.
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Affiliation(s)
- Alison M. Karczewski
- Division of Plastic Surgery, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States
| | - Weifeng Zeng
- Division of Plastic Surgery, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States
| | - Lindsay M. Stratchko
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States
- *Correspondence: Lindsay M. Stratchko,
| | - Kent N. Bachus
- George E. Wahlen Department of Veterans Affairs Medical Center and the Department of Orthopaedics, University of Utah Orthopaedic Center, Salt Lake City, UT, United States
| | - Samuel O. Poore
- Division of Plastic Surgery, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States
| | - Aaron M. Dingle
- Division of Plastic Surgery, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States
- Aaron M. Dingle,
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Scoping review to evaluate existing measurement parameters and clinical outcomes of transtibial prosthetic alignment and socket fit. Prosthet Orthot Int 2022; 46:95-107. [PMID: 35412519 DOI: 10.1097/pxr.0000000000000061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 08/09/2021] [Indexed: 02/03/2023]
Abstract
INTRODUCTION Fit and alignment are observable objectives of the prosthesis rendering process for individuals with lower limb amputation. Nevertheless, there is a dearth of validated measures to directly assess the quality of this clinical procedure. OBJECTIVES The objectives of this scoping review are to evaluate existing measurement parameters and clinical outcomes used in investigations of transtibial socket fit or prosthetic alignment and to identify gaps in the literature regarding tools for evaluation of prosthetic fitting. STUDY DESIGN Scoping literature review. METHODS A comprehensive search was conducted in the following databases: MEDLINE (through PubMed), Embase (through Elsevier), Scopus (through Elsevier), and Engineering Village (through Elsevier), resulting in 6107 studies to be screened. RESULTS Sixty-three studies were included in the review. When measuring fit, studies most frequently reported on patient-reported comfort (n = 22) and socket size compared with the residual limb volume (n = 9). Alignment was most frequently measured by the prosthetists' judgment and/or use of an alignment jig (n = 34). The measurement parameters used to determine alignment or fit varied greatly among the included studies. CONCLUSION This review demonstrated that most measures of socket fit rely on a patient's self-report and may vary with biopsychosocial factors unrelated to the socket fitting process. Meanwhile, alignment is determined mostly by the prosthetist's judgment, paired with objective measurements, such as alignment jigs and gait analysis. Efforts to standardize and validate measures of these parameters of prosthetic fitting are vital to improving clinical practice and reporting outcomes.
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Reif TJ, Jacobs D, Fragomen AT, Rozbruch SR. Osseointegration Amputation Reconstruction. CURRENT PHYSICAL MEDICINE AND REHABILITATION REPORTS 2022. [DOI: 10.1007/s40141-022-00344-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Abstract
Purpose of Review
To review the topic of osseointegration amputation reconstruction, which inserts a transcutaneous metal implant into the remaining intramedullary bone of a person with an amputation to facilitate a direct bone-anchored connection to an external prosthesis, eliminating the molded socket interface.
Recent Findings
Evidence continues to build that patients function better and have a higher quality of life with osseointegration implants compared with traditional socket prosthetics. The indications for osseointegration are expanding to additional patient populations and the long-term outcomes available are favorable which supports the continued refinement and utilization of the technology.
Summary
Osseointegration implants offer people with amputations freedom from burdensome socket prosthetics while improving function and quality of life. Mild infections at the skin interface are common but managed effectively with oral antibiotics and rarely lead to deep infection and implant removal. Other serious complications like hip or implant fracture are also uncommon. Additional long-term outcomes are needed along with technologic refinements, especially at the skin implant interface.
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The Clinical History and Basic Science Origins of Transcutaneous Osseointegration for Amputees. Adv Orthop 2022; 2022:7960559. [PMID: 35340813 PMCID: PMC8956382 DOI: 10.1155/2022/7960559] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/23/2022] [Accepted: 03/02/2022] [Indexed: 11/24/2022] Open
Abstract
Transcutaneous osseointegration for amputees (TOFA) refers to an intramedullary metal endoprosthesis which passes transcutaneously to connect with a limb exoprosthesis. The first recognizably modern experiments and attempts occurred in the 1940s. Multiple researchers using a plethora of materials and techniques over the following 50 years identified principles and obstacles which informed the first long-term successful surgery in 1990. Unfortunately, the current mainstream TOFA literature presents almost exclusively subsequent developments, generally omitting prior research, leading to some historical mistakes being repeated. Given the increasing interest and surgical volume of TOFA, this literature review was performed to delineate TOFA's basic science and surgical origins and to integrate these early efforts within the contemporary understanding. Studying this research could protect and benefit future patients, surgeons, and implant developers as TOFA is entering a phase of increased attention and innovation. The aim of this article is to provide a focused reference of foundational research, much of which is difficult to identify and retrieve, for clinicians and researchers.
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Sun Y, Xu J, Lv S, Xu Z, Li L, Li Y, Li Y. Extramedullary Osseointegration-A Novel Design of Percutaneous Osseointegration Prosthesis for Amputees. Front Bioeng Biotechnol 2022; 10:811128. [PMID: 35223785 PMCID: PMC8867013 DOI: 10.3389/fbioe.2022.811128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 01/13/2022] [Indexed: 11/13/2022] Open
Abstract
The percutaneous osseointegrated (OI) prostheses have greatly improved the overall quality of life for amputees. However, the long-term maintenance of the OI prostheses is still challenging. A major problem is bone resorption around the bone-implant-skin interface, which might cause implant loosening or osteomyelitis. Another problem is the breakage of connecting components between the intramedullary implant and external prosthesis due to excessive stress. We designed a novel osseointegration implant by changing the bone-implant contact from the inner cortex to the outer surface of cortical bone. In the current study, we compared the extramedullary cap-shaped implants with the intramedullary screw-type implants in rabbits. Osteointegration was confirmed at the interface of bone to implant contact (BIC) in both implant types. The external implant induced intramedullary bone regeneration in the medullary canal and increased the cortical bone density at the end of the stump. This study provides a new perspective on the design of osseointegration implants which might prevent the currently reported complications of the intramedullary OI systems.
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Affiliation(s)
- Yingying Sun
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, China.,Department of Stomatology, the First Hospital of Jilin University, Changchun, China
| | - Jinying Xu
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Shuang Lv
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Ziran Xu
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Lisha Li
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Yan Li
- Division of Orthopedics and Biotechnology, Department for Clinical Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden
| | - Yulin Li
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, China
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Richter K, Krause K, Rotter R, Fischer DC, Aschoff HH, Mittlmeier T. [Functional rehabilitation after transfemoral amputation : Shaft prosthesis or endo-exo prosthesis?]. Unfallchirurg 2022; 125:266-274. [PMID: 35212810 DOI: 10.1007/s00113-022-01148-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/19/2022] [Indexed: 10/19/2022]
Abstract
BACKGROUND After transfemoral amputation a prosthesis is required to restore autonomous standing and bipedal locomotion. Attachment of the prosthesis can be achieved either classically via socket suspension with a shaft in the stump or directly via implantation of an intramedullary transcutaneous femoral prosthesis (osseointegrated prosthesis). AIM A fully instrumented gait analysis should enable objectification of the anticipated advantages of the EEP with respect to the gait pattern and individual mobility. MATERIAL AND METHODS In two patients with a unilateral transfemoral amputation a comprehensive gait analysis was carried out prior to and 6 months (patient 1) or 11 and 20 months (patient 2) after switching from a socket prosthesis to an EEP. This was carried out in the Gait Realtime Analysis Interactive Lab (GRAIL), a fully instrumented gait laboratory with virtual reality and enables assessment close to the conditions of daily life. RESULTS In both cases the gait analysis confirmed the advantages associated with an EEP for the transmission of force to the prosthesis and the accompanying improvement in gait symmetry.
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Affiliation(s)
- Katherina Richter
- Klinik und Poliklinik für Unfall‑, Hand- und Wiederherstellungschirurgie, Universitätsmedizin Rostock, Rostock, Deutschland.,Kinder- und Jugendklinik, Universitätsmedizin Rostock, Rostock, Deutschland
| | - Katharina Krause
- Klinik und Poliklinik für Unfall‑, Hand- und Wiederherstellungschirurgie, Universitätsmedizin Rostock, Rostock, Deutschland.,Kinder- und Jugendklinik, Universitätsmedizin Rostock, Rostock, Deutschland
| | - Robert Rotter
- Kinder- und Jugendklinik, Universitätsmedizin Rostock, Rostock, Deutschland
| | - Dagmar-C Fischer
- Kinder- und Jugendklinik, Universitätsmedizin Rostock, Rostock, Deutschland
| | - Horst-H Aschoff
- Klinik für Unfallchirurgie, Medizinische Hochschule Hannover, Hannover, Deutschland
| | - Thomas Mittlmeier
- Klinik und Poliklinik für Unfall‑, Hand- und Wiederherstellungschirurgie, Universitätsmedizin Rostock, Rostock, Deutschland. .,Klinik und Poliklinik für Unfall-, Hand- und Wiederherstellungschirurgie, Universitätsmedizin Rostock, Schillingallee 35, 18057, Rostock, Deutschland.
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Surgical and Technological Advances in the Management of Upper Limb Amputation. CURRENT PHYSICAL MEDICINE AND REHABILITATION REPORTS 2022. [DOI: 10.1007/s40141-022-00341-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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39
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Miranda A, Seyer D, Palomino-Durand C, Morakchi-Goudjil H, Massonie M, Agniel R, Rammal H, Pauthe E, Gand A. Poly-L-Lysine and Human Plasmatic Fibronectin Films as Proactive Coatings to Improve Implant Biointegration. Front Bioeng Biotechnol 2022; 9:807697. [PMID: 35111738 PMCID: PMC8801876 DOI: 10.3389/fbioe.2021.807697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 11/26/2021] [Indexed: 11/13/2022] Open
Abstract
The success of stable and long-term implant integration implies the promotion, control, and respect of the cell microenvironment at the site of implantation. The key is to enhance the implant–host tissue cross talk by developing interfacial strategies that guarantee an optimal and stable seal of soft tissue onto the implant, while preventing potential early and late infection. Indeed, implant rejection is often jeopardized by lack of stable tissue surrounding the biomaterial combined with infections which reduce the lifespan and increase the failure rate of implants and morbidity and account for high medical costs. Thin films formed by the layer-by-layer (LbL) assembly of oppositely charged polyelectrolytes are particularly versatile and attractive for applications involving cell–material contact. With the combination of the extracellular matrix protein fibronectin (Fn, purified from human plasma) and poly-L-lysine (PLL, exhibiting specific chain lengths), we proposed proactive and biomimetic coatings able to guarantee enhanced cell attachment and exhibiting antimicrobial properties. Fn, able to create a biomimetic interface that could enhance cell attachment and promote extracellular cell matrix remodeling, is incorporated as the anionic polymer during film construction by the LbL technic whereas PLL is used as the cationic polymer for its capacity to confer remarkable antibacterial properties.
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Affiliation(s)
- Anamar Miranda
- Equipe de Recherche sur les Relations Matrice Extracellulaire Cellules, Institut des Matériaux, CY Cergy-Paris Université, Cergy-Pontoise, France
| | - Damien Seyer
- Equipe de Recherche sur les Relations Matrice Extracellulaire Cellules, Institut des Matériaux, CY Cergy-Paris Université, Cergy-Pontoise, France
| | - Carla Palomino-Durand
- Equipe de Recherche sur les Relations Matrice Extracellulaire Cellules, Institut des Matériaux, CY Cergy-Paris Université, Cergy-Pontoise, France
| | - Houda Morakchi-Goudjil
- Equipe de Recherche sur les Relations Matrice Extracellulaire Cellules, Institut des Matériaux, CY Cergy-Paris Université, Cergy-Pontoise, France
| | - Mathilde Massonie
- Equipe de Recherche sur les Relations Matrice Extracellulaire Cellules, Institut des Matériaux, CY Cergy-Paris Université, Cergy-Pontoise, France
| | - Rémy Agniel
- Equipe de Recherche sur les Relations Matrice Extracellulaire Cellules, Institut des Matériaux, CY Cergy-Paris Université, Cergy-Pontoise, France
| | - Hassan Rammal
- Equipe de Recherche sur les Relations Matrice Extracellulaire Cellules, Institut des Matériaux, CY Cergy-Paris Université, Cergy-Pontoise, France
- EFOR Healthcare Paris, Biocompatibility Platform, Levallois-Perret, France
| | - Emmanuel Pauthe
- Equipe de Recherche sur les Relations Matrice Extracellulaire Cellules, Institut des Matériaux, CY Cergy-Paris Université, Cergy-Pontoise, France
- *Correspondence: Emmanuel Pauthe, ; Adeline Gand,
| | - Adeline Gand
- Equipe de Recherche sur les Relations Matrice Extracellulaire Cellules, Institut des Matériaux, CY Cergy-Paris Université, Cergy-Pontoise, France
- *Correspondence: Emmanuel Pauthe, ; Adeline Gand,
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Hoellwarth J, Tetsworth K, Akhtar M, Oomatia A, Muderis M. Motorized intramedullary lengthening followed by osseointegration for amputees with short residual femurs: An observational cohort study. JOURNAL OF LIMB LENGTHENING & RECONSTRUCTION 2022. [DOI: 10.4103/jllr.jllr_20_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
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41
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Geffner A, Hoellwarth J, Reif T, Rozbruch SR. Transcutaneous osseointegration for amputees with short residual bone: Is there increased risk for complications? – A pilot study. JOURNAL OF LIMB LENGTHENING & RECONSTRUCTION 2022. [DOI: 10.4103/jllr.jllr_22_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
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42
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Geiger EJ, Hoellwarth JS, Reif TJ, Rozbruch SR. Osseointegration of the Tibia After a Primary Amputation. JBJS Essent Surg Tech 2022. [DOI: 10.2106/jbjs.st.22.00005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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43
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Jaime KM, Reif TJ, Kafedzic H, Garrison G, Dhawan J, Rozbruch SR. Attachment of a Myoelectric Prosthesis After Transulnar Osseointegration Implantation: A 2-Patient Case Study. JBJS Case Connect 2021; 11:01709767-202112000-00075. [PMID: 34910710 DOI: 10.2106/jbjs.cc.21.00381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
CASE This report discusses 2 successful cases of traumatic transulnar amputees who underwent osseointegration implantation. After surgery, a myoelectric prosthetic equipped with Coapt (Chicago, IL) recognition software was attached directly to the implant. Patients underwent training with pattern recognition software to learn to control the myoelectric prosthetic with the multiarticulating hand and wrist. Both implants osseointegrated without signs of loosening at the most recent follow-up of 18 months and 2 years, respectively. Prosthetic control gradually improved to allow activities of daily living. CONCLUSION These cases demonstrate what can be achieved with interdisciplinary coordination between surgeons, prosthetists, and emerging technologies.
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Affiliation(s)
- Kayla M Jaime
- Department of Limb Lengthening and Complex Reconstruction, Hospital for Special Surgery, New York, NY
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44
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Osseointegration. Tech Orthop 2021. [DOI: 10.1097/bto.0000000000000551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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45
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Panhelleux B, Shalhoub J, Silverman AK, McGregor AH. A review of through-knee amputation. Vascular 2021; 30:1149-1159. [PMID: 34844469 DOI: 10.1177/17085381211045183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Through-knee amputation is an umbrella term for several different surgical techniques, which may affect clinical and functional outcomes. This makes it hard to evaluate the benefits and need for a through-knee amputation approach. This article seeks to (1) determine the number of through-knee amputation performed compared with other major lower limb amputations in England over the past decade; (2) identify the theoretical concepts behind through-knee amputation surgical approaches and their potential effect on functional and clinical outcomes and (3) provide a platform for discussion and research on through-knee amputation and surgical outcomes. METHODS National Health Service Hospital Episodes Statistics were used to obtain recent numbers of major lower limb amputations in England. EMBASE and MEDLINE were searched using a systematic approach with predefined criteria for relevant literature on through-knee amputation surgery. RESULTS In the past decade, 4.6% of major lower limb amputations in England were through-knee amputations. Twenty-six articles presenting through-knee amputation surgical techniques met our criteria. These articles detailed three through-knee amputation surgical techniques: the classical approach, which keeps the femur intact and retains the patella; the Mazet technique, which shaves the femoral condyles into a box shape and the Gritti-Stokes technique, which divides the femur proximal to the level of the condyles and attaches the patella at the distal cut femur. CONCLUSIONS Through-knee amputation has persisted as a surgical approach over the past decade, with three core approaches identified. Studies reporting clinical, functional and biomechanical outcomes of through-knee amputation frequently fail to distinguish between the three distinct and differing approaches, making direct comparisons difficult. Future studies that compare through-knee amputation approaches to one another and to other amputation levels are needed.
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Affiliation(s)
- Brieuc Panhelleux
- Department of Surgery and Cancer, 4615Imperial College London, London, UK
| | - Joseph Shalhoub
- Department of Surgery and Cancer, 4615Imperial College London, London, UK.,Imperial Vascular Unit, 4615Imperial College Healthcare NHS Trust, London, UK
| | - Anne K Silverman
- Department of Mechanical Engineering, 3557Colorado School of Mines Golden, CO, USA
| | - Alison H McGregor
- Department of Surgery and Cancer, 4615Imperial College London, London, UK
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Sartori M, Borsari V, Maglio M, Brogini S, Bragonzoni L, Zaffagnini S, Fini M. Skin adhesion to the percutaneous component of direct bone anchored systems: systematic review on preclinical approaches and biomaterials. Biomater Sci 2021; 9:7008-7023. [PMID: 34549759 DOI: 10.1039/d1bm00707f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
Nowadays, direct bone anchored systems are an increasingly adopted approach in the therapeutic landscape for amputee patients. However, the percutaneous nature of these devices poses a major challenge to obtain a stable and lasting proper adhesion between the implant surface and the skin. A systematic review was carried out in three databases (PubMed, Scopus, Web of Science) to provide an overview of the innovative strategies tested with preclinical models (in vitro and in vivo) in the last ten years to improve the skin adhesion of direct bone anchored systems. Fifty five articles were selected after screening, also employing PECO question and inclusion criteria. A modified Cochrane RoB 2.0 tool for the in vitro studies and the SYRCLE tool for in in vivo studies were used to assess the risk of bias. The evidence collected suggests that the implementation of porous percutaneous structures could be one of the most favorable approach to improve proper skin adhesion, especially in association with bioactive coatings, as hydroxyapatite, and exploiting the field of nanostructure. Some issues still remain open as (a) the identification and characterization of the best material/coating association able to limit the shear stresses at the interface and (b) the role of keratinocyte turnover on the skin/biomaterial adhesion and integration processes.
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Affiliation(s)
- Maria Sartori
- IRCCS - Istituto Ortopedico Rizzoli, Complex Structure of Surgical Sciences and Technologies, Via di Barbiano 1/10, 40136, Bologna, Italy.
| | - Veronica Borsari
- IRCCS - Istituto Ortopedico Rizzoli, Complex Structure of Surgical Sciences and Technologies, Via di Barbiano 1/10, 40136, Bologna, Italy.
| | - Melania Maglio
- IRCCS - Istituto Ortopedico Rizzoli, Complex Structure of Surgical Sciences and Technologies, Via di Barbiano 1/10, 40136, Bologna, Italy.
| | - Silvia Brogini
- IRCCS - Istituto Ortopedico Rizzoli, Complex Structure of Surgical Sciences and Technologies, Via di Barbiano 1/10, 40136, Bologna, Italy.
| | - Laura Bragonzoni
- University of Bologna - Department for Life Quality Studies, Bologna, Italy
| | - Stefano Zaffagnini
- IRCCS - Istituto Ortopedico Rizzoli, II Orthopaedic and Traumatologic Clinic, Via G.C. Pupilli 1, 40136, Bologna, Italy
| | - Milena Fini
- IRCCS - Istituto Ortopedico Rizzoli, Complex Structure of Surgical Sciences and Technologies, Via di Barbiano 1/10, 40136, Bologna, Italy.
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Hoellwarth JS, Tetsworth K, Akhtar MA, Al Muderis M. Transcutaneous osseointegration for amputees : lessons from the past of relevance to the future. Bone Joint Res 2021; 10:690-692. [PMID: 34666513 PMCID: PMC8559973 DOI: 10.1302/2046-3758.1010.bjr-2021-0235.r2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- Jason Shih Hoellwarth
- Department of Orthopaedic Surgery, Macquarie University Hospital, Macquarie University, Macquarie Park, Australia.,Limb Lengthening and Complex Reconstruction, Hospital for Special Surgery, New York, New York, USA
| | - Kevin Tetsworth
- Department of Orthopaedic Surgery, Royal Brisbane and Women's Hospital, Herston, Australia
| | | | - Munjed Al Muderis
- Department of Orthopaedic Surgery, Macquarie University Hospital, Macquarie University, Macquarie Park, Australia
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Reif TJ, Khabyeh-Hasbani N, Jaime KM, Sheridan GA, Otterburn DM, Rozbruch SR. Early Experience with Femoral and Tibial Bone-Anchored Osseointegration Prostheses. JB JS Open Access 2021; 6:JBJSOA-D-21-00072. [PMID: 34497971 PMCID: PMC8416017 DOI: 10.2106/jbjs.oa.21.00072] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background: The use of bone-anchored osseointegration implants for amputation reconstruction continues to expand throughout the world. Benefits are thought to include the elimination of socket-related problems and improved control and proprioception of the prosthetic limb. Reported outcomes have been positive, but skepticism remains with regard to the risk of infection and implant failure. Further results from early adopters are therefore needed prior to widespread acceptance and regulatory approval. Methods: A retrospective review of the first 31 consecutive patients who underwent implantation of a press-fit osseointegration implant of the femur or tibia with follow-up of at least 6 months was performed. The primary outcome was the patient-reported Questionnaire for persons with a Transfemoral Amputation (Q-TFA) measured preoperatively and 6 to 12 months postoperatively. Patient-Reported Outcomes Measurement Information System (PROMIS) and Limb Deformity-Scoliosis Research Society (LD-SRS) scores, 2-minute and 6-minute walk tests, and complications were also recorded. Results: In this study, 18 femoral reconstructions and 13 tibial reconstructions were performed, with a mean follow-up (and standard deviation) of 21.1 ± 9.2 months. Twenty-eight reconstructions were single-stage implantations. All Q-TFA domains improved significantly (p < 0.001) from preoperatively to postoperatively, including the global score (25.0 ± 17.4 to 81.2 ± 17.6 points), prosthetic use (50.2 ± 39.9 to 91.2 ± 18.7 points), prosthetic mobility (49.7 ± 26.9 to 81.4 ± 21.5 points), and prosthetic problems (46.4 ± 17.5 to 9.1 ± 6.6 points). The overall and functional outcome domains of the PROMIS and LD-SRS and the 2-minute walk test (243 ± 107 to 369 ± 151 ft [74 ± 33 to 112 ± 46 m]; p = 0.022) and 6-minute walk test (609 ± 323 to 1,054 ± 555 ft [186 ± 98 to 321 ± 169 m]; p = 0.016) also improved significantly. Serious adverse events included 2 periprosthetic hip fractures, 1 explantation for septic loosening, and 1 explantation for aseptic loosening, with an overall implant retention of 93%. The most common complication was low-grade, soft-tissue infection requiring oral antibiotics. Conclusions: Similar to the early experience of other international centers, osseointegration implants improved the overall and functional experience of patients compared with socket prosthetics. Complications were present but manageable and were not a deterrent to ongoing support of the technology. Level of Evidence: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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49
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Imaging following surgery for primary appendicular bone tumours. Skeletal Radiol 2021; 50:1527-1555. [PMID: 33481074 DOI: 10.1007/s00256-021-03712-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 12/22/2020] [Accepted: 01/10/2021] [Indexed: 02/02/2023]
Abstract
Primary bone tumours are uncommon, with sarcomas accounting for < 0.2% of all malignancies. The survival rate of primary bone sarcomas has significantly improved due to (neo)adjuvant therapy, while improved surgical techniques and development of new prostheses have shifted the surgical focus from amputation to limb preservation in the vast majority of patients. A wide variety of surgical options are available for the treatment of primary bone tumours which depend upon histological diagnosis, their appearance at the time of presentation and response to any (neo)adjuvant therapy as required. This review is intended to help radiologists familiarise themselves with the management of primary appendicular bone tumours and expected normal postoperative appearances for the various surgical techniques, and to recognise potential complications.
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Karczewski AM, Dingle AM, Poore SO. The Need to Work Arm in Arm: Calling for Collaboration in Delivering Neuroprosthetic Limb Replacements. Front Neurorobot 2021; 15:711028. [PMID: 34366820 PMCID: PMC8334559 DOI: 10.3389/fnbot.2021.711028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 06/22/2021] [Indexed: 11/21/2022] Open
Abstract
Over the last few decades there has been a push to enhance the use of advanced prosthetics within the fields of biomedical engineering, neuroscience, and surgery. Through the development of peripheral neural interfaces and invasive electrodes, an individual's own nervous system can be used to control a prosthesis. With novel improvements in neural recording and signal decoding, this intimate communication has paved the way for bidirectional and intuitive control of prostheses. While various collaborations between engineers and surgeons have led to considerable success with motor control and pain management, it has been significantly more challenging to restore sensation. Many of the existing peripheral neural interfaces have demonstrated success in one of these modalities; however, none are currently able to fully restore limb function. Though this is in part due to the complexity of the human somatosensory system and stability of bioelectronics, the fragmentary and as-yet uncoordinated nature of the neuroprosthetic industry further complicates this advancement. In this review, we provide a comprehensive overview of the current field of neuroprosthetics and explore potential strategies to address its unique challenges. These include exploration of electrodes, surgical techniques, control methods, and prosthetic technology. Additionally, we propose a new approach to optimizing prosthetic limb function and facilitating clinical application by capitalizing on available resources. It is incumbent upon academia and industry to encourage collaboration and utilization of different peripheral neural interfaces in combination with each other to create versatile limbs that not only improve function but quality of life. Despite the rapidly evolving technology, if the field continues to work in divided "silos," we will delay achieving the critical, valuable outcome: creating a prosthetic limb that is right for the patient and positively affects their life.
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Affiliation(s)
| | - Aaron M. Dingle
- Division of Plastic Surgery, Department of Surgery, University of Wisconsin–Madison, Madison, WI, United States
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