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Colding-Rasmussen T, Schwarzenberg P, Horstmann PF, Ottesen CBS, Garcia JSJ, Hutchinson DJ, Malkoch M, Petersen MM, Varga P, Tierp-Wong CNE. Biomechanical Variability and Usability of a Novel Customizable Fracture Fixation Technique. Bioengineering (Basel) 2023; 10:1146. [PMID: 37892877 PMCID: PMC10604275 DOI: 10.3390/bioengineering10101146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 09/22/2023] [Accepted: 09/26/2023] [Indexed: 10/29/2023] Open
Abstract
A novel in situ customizable osteosynthesis technique, Bonevolent™ AdhFix, demonstrates promising biomechanical properties under the expertise of a single trained operator. This study assesses inter- and intra-surgeon biomechanical variability and usability of the AdhFix osteosynthesis platform. Six surgeons conducted ten osteosyntheses on a synthetic bone fracture model after reviewing an instruction manual and completing one supervised osteosynthesis. Samples underwent 4-point bending tests at a quasi-static loading rate, and the maximum bending moment (BM), bending stiffness (BS), and AdhFix cross-sectional area (CSA: mm²) were evaluated. All constructs exhibited a consistent appearance and were suitable for biomechanical testing. The mean BM was 2.64 ± 0.57 Nm, and the mean BS was 4.35 ± 0.44 Nm/mm. Statistically significant differences were observed among the six surgeons in BM (p < 0.001) and BS (p = 0.004). Throughout ten trials, only one surgeon demonstrated a significant improvement in BM (p < 0.025), and another showed a significant improvement in BS (p < 0.01). A larger CSA corresponded to a statistically significantly higher value for BM (p < 0.001) but not for BS (p = 0.594). In conclusion, this study found consistent biomechanical stability both across and within the surgeons included, suggesting that the AdhFix osteosynthesis platform can be learned and applied with minimal training and, therefore, might be a clinically viable fracture fixation technique. The variability in BM and BS observed is not expected to have a clinical impact, but future clinical studies are warranted.
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Affiliation(s)
- Thomas Colding-Rasmussen
- Department of Orthopedic Surgery, Hvidovre University Hospital, Kettegaard Allé 30, 2650 Hvidovre, Denmark;
| | - Peter Schwarzenberg
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos, Switzerland; (P.S.); (P.V.)
| | - Peter Frederik Horstmann
- Department of Orthopedic Surgery, Gentofte Hospital, Gentofte Hospitalsvej 1, 2900 Hellerup, Denmark;
| | - Casper Bent Smedegaard Ottesen
- Department of Orthopedic Surgery, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, 2100 Copenhagen, Denmark; (C.B.S.O.); (M.M.P.)
| | - Jorge San Jacinto Garcia
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Brinellvägen 8, 10044 Stockholm, Sweden; (J.S.J.G.); (D.J.H.); (M.M.)
| | - Daniel John Hutchinson
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Brinellvägen 8, 10044 Stockholm, Sweden; (J.S.J.G.); (D.J.H.); (M.M.)
| | - Michael Malkoch
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Brinellvägen 8, 10044 Stockholm, Sweden; (J.S.J.G.); (D.J.H.); (M.M.)
| | - Michael Mørk Petersen
- Department of Orthopedic Surgery, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, 2100 Copenhagen, Denmark; (C.B.S.O.); (M.M.P.)
- Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen, Denmark
| | - Peter Varga
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos, Switzerland; (P.S.); (P.V.)
| | - Christian Nai En Tierp-Wong
- Department of Orthopedic Surgery, Hvidovre University Hospital, Kettegaard Allé 30, 2650 Hvidovre, Denmark;
- Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen, Denmark
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Colding-Rasmussen T, Horstmann PF, Jørgensen PH, Hettwer W, Hansen BH, Tierp-Wong CNE, Petersen MM. Does the use of polymethyl-methacrylate cement after intralesional curettage of giant cell tumors of appendicular bone guarantee reduced local recurrence rates? A retrospective analysis. J Orthop Surg (Hong Kong) 2023; 31:10225536231202155. [PMID: 37688488 DOI: 10.1177/10225536231202155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/11/2023] Open
Abstract
PURPOSE Polymethyl-methacrylate cement (PMMA) is often used as bone defect reconstruction material after surgical removal of giant cell tumors. The purpose of this study was to investigate if the application of PMMA improves the local recurrence rates for giant cell tumors (GCT) of appendicular bone treated with intralesional curettage. METHODS A retrospective analysis of all appendicular GTCs treated at two major Danish sarcoma centres between the 1st of January 1998 and December 31st 2013; minimum follow-up of 3.0 years (median: 8.9; 1.3-18.7 years). Kaplan-Meier survival model, log-rank and multivariate Cox regression were used to calculate and compare local recurrence rates. p-values <0.05 were considered statistically significant. RESULTS 102 patients (M59/F43), median age 31Y (11-84) were included in this study. The overall 3-years local recurrence-rate was 19.9% (95%CI: 11.9-27.9%); 91% had occurred within 3 years. In patients treated with intralesional curettage (n = 64), the 3-years recurrence-rate was 30.6% (95%CI: 18.8-42.4%), compared to 2.6% (95%CI: 0.0-7.8%) in patients treated with wide resection or amputation (n = 38), p < .001. The 3-years recurrence-rate for patients treated with intralesional curettage and reconstruction using PMMA was 29.0% (95%CI: 12.6-45.4%) and without PMMA: 31.8% (95%CI: 15.2-48.4%), p = .83. CONCLUSION We found that the use of PMMA for bone defect reconstruction after intralesional curettage of GTCs in the appendicular skeleton did not ensure a reduced risk of local recurrence.
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Affiliation(s)
| | - Peter F Horstmann
- Musculoskeletal Tumor Section, Department of Orthopedic Surgery, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Peter H Jørgensen
- Sarcoma Center, Department of Orthopedic Surgery, Aarhus University Hospital, Aarhus, Denmark
| | - Werner Hettwer
- Musculoskeletal Tumor Section, Department of Orthopedic Surgery, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Bjarne H Hansen
- Sarcoma Center, Department of Orthopedic Surgery, Aarhus University Hospital, Aarhus, Denmark
| | | | - Michael M Petersen
- Musculoskeletal Tumor Section, Department of Orthopedic Surgery, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
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Schwarzenberg P, Colding-Rasmussen T, Hutchinson DJ, Mischler D, Horstmann P, Petersen MM, Jacobsen S, Pastor T, Malkoch M, Wong C, Varga P. Biomechanical performance of a novel light-curable bone fixation technique. Sci Rep 2023; 13:9339. [PMID: 37291148 PMCID: PMC10250346 DOI: 10.1038/s41598-023-35706-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 05/22/2023] [Indexed: 06/10/2023] Open
Abstract
Traumatic bone fractures are often debilitating injuries that may require surgical fixation to ensure sufficient healing. Currently, the most frequently used osteosynthesis materials are metal-based; however, in certain cases, such as complex comminuted osteoporotic fractures, they may not provide the best solution due to their rigid and non-customizable nature. In phalanx fractures in particular, metal plates have been shown to induce joint stiffness and soft tissue adhesions. A new osteosynthesis method using a light curable polymer composite has been developed. This method has demonstrated itself to be a versatile solution that can be shaped by surgeons in situ and has been shown to induce no soft tissue adhesions. In this study, the biomechanical performance of AdhFix was compared to conventional metal plates. The osteosyntheses were tested in seven different groups with varying loading modality (bending and torsion), osteotomy gap size, and fixation type and size in a sheep phalanx model. AdhFix demonstrated statistically higher stiffnesses in torsion (64.64 ± 9.27 and 114.08 ± 20.98 Nmm/° vs. 33.88 ± 3.10 Nmm/°) and in reduced fractures in bending (13.70 ± 2.75 Nm/mm vs. 8.69 ± 1.16 Nmm/°), while the metal plates were stiffer in unreduced fractures (7.44 ± 1.75 Nm/mm vs. 2.70 ± 0.72 Nmm/°). The metal plates withstood equivalent or significantly higher torques in torsion (534.28 ± 25.74 Nmm vs. 614.10 ± 118.44 and 414.82 ± 70.98 Nmm) and significantly higher bending moments (19.51 ± 2.24 and 22.72 ± 2.68 Nm vs. 5.38 ± 0.73 and 1.22 ± 0.30 Nm). This study illustrated that the AdhFix platform is a viable, customizable solution that is comparable to the mechanical properties of traditional metal plates within the range of physiological loading values reported in literature.
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Affiliation(s)
| | | | - Daniel J Hutchinson
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm, Sweden
| | | | - Peter Horstmann
- Department of Orthopedic Surgery, Herlev and Gentofte Hospital, Hellerup, Denmark
| | - Michael Mørk Petersen
- Department of Orthopedic Surgery, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Stine Jacobsen
- Department of Veterinary Clinical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Tatjana Pastor
- AO Research Institute Davos, Davos, Switzerland
- Department for Plastic and Hand Surgery, Inselspital University Hospital Bern, University of Bern, Bern, Switzerland
| | - Michael Malkoch
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Christian Wong
- Department of Orthopedic Surgery, Hvidovre University Hospital, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Peter Varga
- AO Research Institute Davos, Davos, Switzerland
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Colding-Rasmussen T, Presman B, Ban I. [The isolated posterior malleolus fracture]. Ugeskr Laeger 2022; 184:V10210811. [PMID: 35656608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This is a case report of a 26-year-old healthy female who sustained an isolated posterior malleolar fracture; diagnosed by X-ray, confirmed by CT and treated with an orthosis and full weightbearing. Subsequent weightbearing X-rays showed no displacement or concomitant injury. However rare, isolated posterior malleolar fracture may indicate a complex ankle injury and therefore warrant extra attention when diagnosed. The diagnosis is difficult due to diffuse symptoms and limited visualization on plain X-rays. Missed diagnoses might lead to persistent pain and arthrosis.
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Affiliation(s)
| | - Benjamin Presman
- Ortopædkirurgisk Afdeling, Københavns Universitetshospital - Hvidovre Hospital
| | - Ilija Ban
- Ortopædkirurgisk Afdeling, Københavns Universitetshospital - Hvidovre Hospital
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Sørensen MS, Colding-Rasmussen T, Horstmann PF, Hindsø K, Dehlendorff C, Johansen JS, Petersen MM. Pretreatment Plasma IL-6 and YKL-40 and Overall Survival after Surgery for Metastatic Bone Disease of the Extremities. Cancers (Basel) 2021; 13:cancers13112833. [PMID: 34200156 PMCID: PMC8201042 DOI: 10.3390/cancers13112833] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 06/03/2021] [Indexed: 12/12/2022] Open
Abstract
Simple Summary Estimating postoperative survival in patients undergoing surgery for metastatic bone disease of the extremities is important in order to choose an implant that will outlive the patient. The present study suggests that plasma IL-6, reflecting the inflammatory state of the patient, is predictive for postoperative overall survival (OS). Abstract Background: Plasma IL-6 and YKL-40 are prognostic biomarkers for OS in patients with different types of solid tumors, but they have not been studied in patients before surgery of metastatic bone disease (MBD) of the extremities. The aim was to evaluate the prognostic value of plasma IL-6 and YKL-40 in patients undergoing surgery for MBD of the extremities. Patients and Methods: A prospective study included all patients undergoing surgery for MBD in the extremities at a tertiary referral center during the period 2014–2018. Preoperative blood samples from index surgery were included. IL-6 and YKL-40 concentrations in plasma were determined by commercial ELISA. A total of 232 patients (median age 66 years, IQR 58–74; female 51%) were included. Results: Cox regression analysis was performed to identify independent prognostic factors for OS. IL-6 correlated with YKL-40 (rho = 0.46, p < 0.01). In univariate analysis (log2 continuous variable) IL-6 (HR = 1.26, 95% CI 1.16–1.37), CRP (HR = 1.20, 95% CI 1.12–1.29) and YKL-40 (HR = 1.25, 95% CI 1.15–1.37) were associated with short OS. In multivariable analysis, adjusted for known risk factors for survival, only log2(IL-6) was independently associated with OS (HR = 1.24, 95% CI 1.08–1.43), whereas CRP and YKL-40 were not. Conclusion: High preoperative plasma IL-6 is an independent biomarker of short OS in patients undergoing surgery for MBD.
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Affiliation(s)
- Michala Skovlund Sørensen
- Musculoskeletal Tumor Section, Department of Orthopedic Surgery, Rigshospitalet, University of Copenhagen, 2100 Copenhagen Ø, Denmark; (T.C.-R.); (P.F.H.); (M.M.P.)
- Correspondence: or
| | - Thomas Colding-Rasmussen
- Musculoskeletal Tumor Section, Department of Orthopedic Surgery, Rigshospitalet, University of Copenhagen, 2100 Copenhagen Ø, Denmark; (T.C.-R.); (P.F.H.); (M.M.P.)
| | - Peter Frederik Horstmann
- Musculoskeletal Tumor Section, Department of Orthopedic Surgery, Rigshospitalet, University of Copenhagen, 2100 Copenhagen Ø, Denmark; (T.C.-R.); (P.F.H.); (M.M.P.)
| | - Klaus Hindsø
- Pediatric Section, Department of Orthopedic Surgery, Rigshospitalet, University of Copenhagen, 2100 Copenhagen Ø, Denmark;
| | - Christian Dehlendorff
- Statistics and Data Analysis Danish Cancer Society Research Center, 2100 Copenhagen Ø, Denmark;
| | - Julia Sidenius Johansen
- Department of Medicine, Herlev and Gentofte Hospital, Copenhagen University Hospital, 2730 Herlev, Denmark;
- Department of Oncology, Herlev and Gentofte Hospital, Copenhagen University Hospital, 2730 Herlev, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, 2730 Herlev, Denmark
| | - Michael Mørk Petersen
- Musculoskeletal Tumor Section, Department of Orthopedic Surgery, Rigshospitalet, University of Copenhagen, 2100 Copenhagen Ø, Denmark; (T.C.-R.); (P.F.H.); (M.M.P.)
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, 2730 Herlev, Denmark
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Colding-Rasmussen T, Horstmann P, Petersen MM, Hettwer W. Antibiotic Elution Characteristics and Pharmacokinetics of Gentamicin and Vancomycin from a Mineral Antibiotic Carrier: An in vivo Evaluation of 32 Clinical Cases. J Bone Jt Infect 2018; 3:234-240. [PMID: 30416950 PMCID: PMC6215984 DOI: 10.7150/jbji.26301] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 09/18/2018] [Indexed: 11/05/2022] Open
Abstract
Introduction: Locally implanted antibiotic-eluting carriers may be a valuable adjuvant to the management of prosthetic joint infections. Aim: to assess local and plasma antibiotic concentrations as well as cumulative antibiotic urine excretion associated with clinical use of a gentamicin - or vancomycin-loaded mineral composite antibiotic carrier. Methods: 32 patients (male/female=19/13, mean age=56; 21-82 years) were prospectively followed after implantation of gentamicin (n=11), vancomycin (n=15), or a combination (n=7), using an antibiotic carrier (CERAMENT™|G or CERAMENT™|V, mean amount 11 (3-20) mL) during resection arthroplasty of the hip/knee. We measured antibiotic concentrations in plasma (1h, 3h, 24h, 48h and 72h post-implantation), urine (24h, 48h and 72h post-implantation) and in drain (n=15). Results: We observed low antibiotic concentrations in plasma (Gentamicin: 0.33 mg/L (95%-CI: 0.25-0.44) and vancomycin: 1.33 mg/L (95%-CI: 1.02-1.66)) and high concentrations in drain (Gentamicin: mean 57.8 mg/L (95%-CI: 45.8-69.7) and vancomycin: mean 234.4 mg/L (95%-CI: 198.9-269.7)). Use of a drain was associated with a statistically significant reduction in vancomycin urine excretion (55.6% (95% CI: 36.45-74.92) to 28.71% (95% CI: 13.07-44.35), p=0.042). A similar trend was observed for gentamicin (34.17% (95% CI: 24.62-43.72) to 16.22% (95% CI: 0-33.86), p=0.078). Conclusions: CERAMENT™G/V was associated with safe plasma concentrations and high local concentrations above minimum inhibitory concentration. Installation of a surgical drain results in removal of a substantial amount of antibiotics and reduces antibiotic urine excretion.
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Affiliation(s)
- Thomas Colding-Rasmussen
- Department of Orthopaedic Surgery, the Musculoskeletal Tumour Section, Rigshospitalet, University of Copenhagen
| | - Peter Horstmann
- Department of Orthopaedic Surgery, the Musculoskeletal Tumour Section, Rigshospitalet, University of Copenhagen
| | - Michael Mørk Petersen
- Department of Orthopaedic Surgery, the Musculoskeletal Tumour Section, Rigshospitalet, University of Copenhagen
| | - Werner Hettwer
- Department of Orthopaedic Surgery, the Musculoskeletal Tumour Section, Rigshospitalet, University of Copenhagen
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Colding-Rasmussen T, Thorn AP, Horstmann P, Rechnitzer C, Hjalgrim LL, Krarup-Hansen A, Petersen MM. Survival and prognostic factors at time of diagnosis in high-grade appendicular osteosarcoma: a 21 year single institution evaluation from east Denmark. Acta Oncol 2018; 57:420-425. [PMID: 28741397 DOI: 10.1080/0284186x.2017.1351620] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND Survival of patients with high-grade osteosarcoma (HOS), the most common primary bone cancer, has not improved significantly the last 30 years and the disease remains a major challenge. The purpose of this study is to evaluate survival in relation to prognostic factors at time of diagnosis among patients diagnosed with primary appendicular HOS in East Denmark between 1990 and 2010. MATERIAL AND METHODS 101 patients (median age = 20 years, female/male ratio = 56/45) diagnosed with primary appendicular high-grade osteosarcoma between 1990 and 2010 were included in this study. Initially, 156 patients diagnosed with osteosarcoma between 1990 and 2010 were identified through the population based Regional Database of Pathology, which covers a population of approximately 2.7 million (east Denmark). 55 patients were excluded due to (A) tumor was low grade (n = 22), (B) located in axial skeleton (n = 18), (C) incorrect diagnosis (n = 11) or (D) biopsy represented a tumor relapse from a former primary osteosarcoma (n = 4). Overall survival was evaluated using the Kaplan-Meier survival analysis and log-rank test. Prognostic factors were analyzed using uni- and multivariate cox-regression method with variables scored equally in the model. p Values <.05 were considered statistically significant. RESULTS The probability of 5- and 10-year survival was 51% (95% CI: 41-61) and 46% (95% CI: 36-56), respectively. Metastatic stage at diagnosis and tumor size ≥10 cm measured radiologically at the largest diameter were independent prognostic factors for decreased survival with significant increased hazard-risks of 3.5 (95% CI: 1.9-6.5) and 1.97 (95% CI: 1.1-3.6), respectively. DISCUSSION In this single institution evaluation of primary appendicular HOS we found 5-and 10-year survival rates consistent with international standards for this patient group. Distant metastases and tumor size ≥10 cm at the time of diagnosis were independent prognostic factors for decreased survival in our cohort. These results underline the importance of awareness and early referral from the primary sector.
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Affiliation(s)
- Thomas Colding-Rasmussen
- The Musculoskeletal Tumour Section, The Department of Orthopedics, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Andrea Pohly Thorn
- The Musculoskeletal Tumour Section, The Department of Orthopedics, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Peter Horstmann
- The Musculoskeletal Tumour Section, The Department of Orthopedics, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Catherine Rechnitzer
- Department of Paediatrics and Adolescent, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Lisa Lyngsie Hjalgrim
- Department of Paediatrics and Adolescent, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | | | - Michael Mørk Petersen
- The Musculoskeletal Tumour Section, The Department of Orthopedics, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
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