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Humez M, Kötter K, Skripitz R, Kühn KD. Evidence for cemented TKA and THA based on a comparison of international register data. ORTHOPADIE (HEIDELBERG, GERMANY) 2024:10.1007/s00132-024-04489-4. [PMID: 38568216 DOI: 10.1007/s00132-024-04489-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/27/2024] [Indexed: 05/30/2024]
Abstract
BACKGROUND Hip and knee implants can either be fixed without cement, press-fit, or with bone cement. Real-world data from arthroplasty registers, as well as studies provide a broad database for the discussion of cemented versus uncemented arthroplasty procedures. OBJECTIVE What does current evidence from international arthroplasty registries and meta-analyses recommend regarding cemented or cementless fixation of hip and knee implants? METHODS A recommendation is generated by means of direct data comparison from the arthroplasty registries of eight countries (USA, Germany, Australia, UK, Sweden, Norway, New Zealand, Netherlands), the comparison of 22 review studies and meta-analyses based on registry data, as well as an evaluation of recommendations of healthcare systems from different nations. For this purpose, reviews and meta-analyses were selected where the results were statistically significant, as were the annual reports of the arthroplasty registries that were current at the time of writing. RESULTS For knee arthroplasties, long survival time as well as lower risk of revision can be achieved with the support of cemented fixation with antibiotic-loaded bone cement. In patients aged 70 years and older, cemented fixation of hip stem implants significantly reduces risk of intraoperative or postoperative periprosthetic fracture (quadruple). This applies both to elective total hip arthroplasties and to hemiarthroplasty after femoral neck fractures. Antibiotic-loaded bone cement significantly (p = 0.041) reduces the risk of periprosthetic infection, especially in patients with femoral neck fractures. CONCLUSION Total knee replacement with antibiotic-loaded bone cement is well established internationally and is evidence-based. Registry data and meta-analyses recommend cemented fixation of the hip stem in older patients. In Germany, USA and Australia these evidence-based recommendations still must be transferred to daily practice.
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Affiliation(s)
- Martina Humez
- Institute of Hygiene and Environmental Medicine, Justus-Liebig-Universität Giessen, Schubertstraße 81, 35392, Giessen, Germany.
| | | | - Ralf Skripitz
- Centre for Endoprosthetics, Foot Surgery, Paediatric and General Orthopaedics, Roland-Klinik Bremen, Bremen, Germany
| | - Klaus-Dieter Kühn
- Department of Orthopaedics and Orthopaedic Surgery, Medical University of Graz, Graz, Germany
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Skopec L, Berenson RA, Simon B, Papanicolas I. Variation in processes of care for total hip arthroplasty across high-income countries. HEALTH AFFAIRS SCHOLAR 2024; 2:qxae043. [PMID: 38756170 PMCID: PMC11060656 DOI: 10.1093/haschl/qxae043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/29/2024] [Accepted: 04/22/2024] [Indexed: 05/18/2024]
Abstract
Total hip arthroplasty (THA) is among the most commonly performed elective surgeries in high-income countries, and wait times for THA have frequently been cited by US commentators as evidence that countries with universal insurance programs or national health systems "ration" care. This novel qualitative study explores processes of care for hip replacement in the United States and 6 high-income countries with a focus on eligibility, wait times, decision-making, postoperative care, and payment policies. We found no evidence of rationing or government interference in decision-making across high-income countries. Compared with the 6 other high-income countries in our study, the United States has developed efficient care processes that often allow for a same-day discharge. In contrast, THA patients in Germany stay in the hospital 7-9 days and receive 2-3 weeks of inpatient rehabilitation. However, the payment per THA in the United States remains far above other countries, despite far fewer inpatient days.
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Affiliation(s)
- Laura Skopec
- Health Policy Center, Urban Institute, Washington, DC 20037, United States
| | - Robert A Berenson
- Health Policy Center, Urban Institute, Washington, DC 20037, United States
| | - Benedikt Simon
- Department for Integrated and Digital Care, Asklepios Kliniken GmbH & Co KGaA, 22307 Hamburg, Germany
| | - Irene Papanicolas
- Department of Health Services, Policy & Practice, Brown University School of Public Health, Providence, RI 02903, United States
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Humez M, Kötter K, Skripitz R, Kühn KD. [Register data on cemented arthroplasty : A proof for cementless fixation?]. ORTHOPADIE (HEIDELBERG, GERMANY) 2024; 53:163-175. [PMID: 37889315 PMCID: PMC10896946 DOI: 10.1007/s00132-023-04451-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/21/2023] [Indexed: 10/28/2023]
Abstract
BACKGROUND Hip and knee implants can be either fixated without cement, press-fit, or with bone cement. Real-world data from arthroplasty registers, as well as studies, provide a broad database for the discussion of cemented versus uncemented arthroplasty procedures. OBJECTIVES What is the recommendation for cemented or cementless anchorage of hip and knee implants based on the current evidence from international arthroplasty registries and meta-analyses? METHODS A recommendation is generated by means of a direct comparison of data from the arthroplasty registries of eight different countries (USA, Germany, Australia, UK, Sweden, Norway, New Zealand, and The Netherlands), the comparison of 22 review studies and meta-analyses based on registry data, as well as the evaluation of the recommendation of healthcare systems of different nations. For this purpose, reviews and meta-analyses whose results were statistically significant were selected, as were the annual reports of the arthroplasty registries that were current at the time of writing. RESULTS For knee endoprostheses, a long survival time, as well as a lower risk of revision can be achieved with the help of cemented anchorage with antibiotic-laden bone cement. In patients aged 70 years and older, cemented anchorage of the hip stem implant significantly reduces the risk of intraoperative or postoperative periprosthetic fracture (times four), this applies both to elective total hip arthroplasties (TEPs) and to hemiarthroplasty after femoral neck fractures. Antibiotic-loaded bone cement significantly (p = 0.041) reduces the risk of periprosthetic infection, especially in patients with femoral neck fractures. CONCLUSIONS Total knee replacement with antibiotic-loaded bone cement is well established in Germany and evidence based. Registry data and meta-analyses recommend cemented fixation of the hip stem in older patients-in Germany the evidence-based recommendations must still be transferred to daily practice.
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Affiliation(s)
- Martina Humez
- Heraeus Medical GmbH, Philipp-Reis-Str. 8/13, 61273, Wehrheim, Deutschland.
| | - Katharina Kötter
- Heraeus Medical GmbH, Philipp-Reis-Str. 8/13, 61273, Wehrheim, Deutschland
| | - Ralf Skripitz
- Zentrum für Endoprothetik, Fußchirurgie, Kinder- und Allgemeine Orthopädie, Roland-Klinik Bremen, Bremen, Deutschland
| | - Klaus-Dieter Kühn
- Department of Orthopaedics and Trauma, Medizinische Universität Graz, Graz, Österreich
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Reulbach M, Evers P, Emonde C, Behnsen H, Nürnberger F, Windhagen H, Jakubowitz E. Implications of ageing effects on thermal and mechanical properties of PMMA-based bone cement for THA revision surgery. J Mech Behav Biomed Mater 2023; 148:106218. [PMID: 37931550 DOI: 10.1016/j.jmbbm.2023.106218] [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: 09/15/2023] [Revised: 10/27/2023] [Accepted: 10/30/2023] [Indexed: 11/08/2023]
Abstract
Loosening and infection are the main reasons for revision surgery in total hip arthroplasty (THA). Removing partially detached cemented implant components during revision surgery remains challenging and poses the risk of periprosthetic bone damage. A promising approach for a gentler removal of partially detached prostheses involves softening the PMMA-based bone cement by heating it above its glass transition temperature (TG), thus loosening the implant-cement bond. It is assumed that the TG of PMMA-based bone cement decreases in-vivo due to the gradual absorption of body fluid. Reliable data on TG are essential to develop a heat-based method for removing cemented implant components during revision surgery. The effect of water absorption was investigated in-vitro by ageing PMMA-based bone cement samples for different periods up to 56 days in both Ringer's solution (37 °C) and air (37 °C and 30% humidity). Subsequently, the TG and Vicat softening temperatures of the samples were determined by differential scanning calorimetry and Vicat tests, respectively, according to prescribed methods. Over the entire ageing period, i.e. comparing one day of ageing in air and 56 days in Ringer's solution, the Vicat softening temperature dropped by 16 °C, while the TG dropped by 10 °C for Palacos® R PMMA-based bone cement. Water absorption over time correlated significantly with the Vicat softening temperature until saturation of the PMMA-based bone cement was reached. Based on the TG and Vicat softening temperature measurements, it can be assumed that in body-aged bone cement, an optimal softening can be achieved within a temperature range of 85 °C-93 °C to loosen the bond between the PMMA-based bone cement mantle and the prosthesis stem. These findings may pave the way for a gentler removal of the implant in revision THA.
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Affiliation(s)
- Magnus Reulbach
- Laboratory for Biomechanics and Biomaterials (LBB), Department of Orthopaedic Surgery, Hannover Medical School, Anna-von-Borries-Strasse 1-7, 30625, Hannover, Germany
| | - Patrick Evers
- Institute of Materials Science (Werkstoffkunde), Leibniz University Hannover, An der Universität 2, 30823, Garbsen, Germany
| | - Crystal Emonde
- Laboratory for Biomechanics and Biomaterials (LBB), Department of Orthopaedic Surgery, Hannover Medical School, Anna-von-Borries-Strasse 1-7, 30625, Hannover, Germany
| | - Hannah Behnsen
- Institute of Plastics and Circular Economy, Leibniz University Hannover, An der Universität 2, 30823, Garbsen, Germany
| | - Florian Nürnberger
- Institute of Materials Science (Werkstoffkunde), Leibniz University Hannover, An der Universität 2, 30823, Garbsen, Germany
| | - Henning Windhagen
- Laboratory for Biomechanics and Biomaterials (LBB), Department of Orthopaedic Surgery, Hannover Medical School, Anna-von-Borries-Strasse 1-7, 30625, Hannover, Germany
| | - Eike Jakubowitz
- Laboratory for Biomechanics and Biomaterials (LBB), Department of Orthopaedic Surgery, Hannover Medical School, Anna-von-Borries-Strasse 1-7, 30625, Hannover, Germany.
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Aspinal F, Ledger J, Jasim S, Mehta R, Raine R, Fulop NJ, Barratt H. Implementation of the national Getting it Right First Time orthopaedic programme in England: a qualitative case study analysis. BMJ Open 2023; 13:e066303. [PMID: 36828659 PMCID: PMC9972449 DOI: 10.1136/bmjopen-2022-066303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 02/03/2023] [Indexed: 02/26/2023] Open
Abstract
OBJECTIVE To describe the implementation and impact of the Getting it Right First Time (GIRFT) national orthopaedic improvement programme at the level of individual National Health Service (NHS) Trusts. DESIGN Qualitative case studies conducted at six NHS Trusts, as part of a mixed-methods evaluation of GIRFT. SETTING NHS elective orthopaedic surgery in England. PARTICIPANTS 59 NHS staff. INTERVENTION Improvement bundle, including bespoke routine performance data and improvement recommendations for each organisation, delivered via 'deep-dive' visits to NHS Trusts by a senior orthopaedic clinician. RESULTS Although all case study sites had made improvements to care, very few of these were reportedly a direct consequence of GIRFT. A range of factors, operating at three different levels, influenced their ability to implement GIRFT recommendations: at the level of the orthopaedic team (micro-eg, how individuals perceived the intervention); the wider Trust (meso-eg, competition for theatre/bed space) and the health economy more broadly (macro-eg, requirements to form local networks). Some sites used GIRFT evidence to support arguments for change which helped cement and formalise existing plans. However, where GIRFT measures were not a Trust priority because of more immediate demands-for example, financial and bed pressures-it was less likely to influence change. CONCLUSION Dynamic relationships between the different contextual factors, within and between the three levels, can impact the effectiveness of a large-scale improvement intervention and may account for variations in implementation outcomes in different settings. When designing an intervention, those leading future improvement programmes should consider how it sits in relation to these three contextual levels and the interactions that may occur between them.
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Affiliation(s)
- Fiona Aspinal
- Department of Applied Health Research, University College London, London, UK
| | - Jean Ledger
- Department of Applied Health Research, University College London, London, UK
| | - Sarah Jasim
- Care Policy and Evaluation Centre, The London School of Economics and Political Science, London, UK
| | - Raj Mehta
- NIHR ARC North Thames Research Advisory Panel, Department of Applied Health Research, University College London, London, UK
| | - Rosalind Raine
- Department of Applied Health Research, University College London, London, UK
| | - Naomi J Fulop
- Department of Applied Health Research, University College London, London, UK
| | - Helen Barratt
- Department of Applied Health Research, University College London, London, UK
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Blom AW, Lenguerrand E, Strange S, Noble SM, Beswick AD, Burston A, Garfield K, Gooberman-Hill R, Harris SRS, Kunutsor SK, Lane JA, MacGowan A, Mehendale S, Moore AJ, Rolfson O, Webb JCJ, Wilson M, Whitehouse MR. Clinical and cost effectiveness of single stage compared with two stage revision for hip prosthetic joint infection (INFORM): pragmatic, parallel group, open label, randomised controlled trial. BMJ 2022; 379:e071281. [PMID: 36316046 PMCID: PMC9645409 DOI: 10.1136/bmj-2022-071281] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVES To determine whether patient reported outcomes improve after single stage versus two stage revision surgery for prosthetic joint infection of the hip, and to determine the cost effectiveness of these procedures. DESIGN Pragmatic, parallel group, open label, randomised controlled trial. SETTING High volume tertiary referral centres or orthopaedic units in the UK (n=12) and in Sweden (n=3), recruiting from 1 March 2015 to 19 December 2018. PARTICIPANTS 140 adults (aged ≥18 years) with a prosthetic joint infection of the hip who required revision (65 randomly assigned to single stage and 75 to two stage revision). INTERVENTIONS A computer generated 1:1 randomisation list stratified by hospital was used to allocate participants with prosthetic joint infection of the hip to a single stage or a two stage revision procedure. MAIN OUTCOME MEASURES The primary intention-to-treat outcome was pain, stiffness, and functional limitations 18 months after randomisation, measured by the Western Ontario and McMasters Universities Osteoarthritis Index (WOMAC) score. Secondary outcomes included surgical complications and joint infection. The economic evaluation (only assessed in UK participants) compared quality adjusted life years and costs between the randomised groups. RESULTS The mean age of participants was 71 years (standard deviation 9) and 51 (36%) were women. WOMAC scores did not differ between groups at 18 months (mean difference 0.13 (95% confidence interval -8.20 to 8.46), P=0.98); however, the single stage procedure was better at three months (11.53 (3.89 to 19.17), P=0.003), but not from six months onwards. Intraoperative events occurred in five (8%) participants in the single stage group and 20 (27%) in the two stage group (P=0.01). At 18 months, nine (14%) participants in the single stage group and eight (11%) in the two stage group had at least one marker of possible ongoing infection (P=0.62). From the perspective of healthcare providers and personal social services, single stage revision was cost effective with an incremental net monetary benefit of £11 167 (95% confidence interval £638 to £21 696) at a £20 000 per quality adjusted life years threshold (£1.0; $1.1; €1.4). CONCLUSIONS At 18 months, single stage revision compared with two stage revision for prosthetic joint infection of the hip showed no superiority by patient reported outcome. Single stage revision had a better outcome at three months, fewer intraoperative complications, and was cost effective. Patients prefer early restoration of function, therefore, when deciding treatment, surgeons should consider patient preferences and the cost effectiveness of single stage surgery. TRIAL REGISTRATION ISRCTN registry ISRCTN10956306.
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Affiliation(s)
- Ashley W Blom
- University of Bristol Medical School, Translational Health Sciences, Musculoskeletal Research Unit, Level 1 Learning and Research Building, Southmead Hospital, Westbury-on-Trym, Bristol, UK
- National Institute for Health and Care Research Bristol Biomedical Research Centre, University Hospitals Bristol and Weston NHS Foundation Trust and University of Bristol, Bristol, UK
| | - Erik Lenguerrand
- University of Bristol Medical School, Translational Health Sciences, Musculoskeletal Research Unit, Level 1 Learning and Research Building, Southmead Hospital, Westbury-on-Trym, Bristol, UK
| | - Simon Strange
- University of Bristol Medical School, Translational Health Sciences, Musculoskeletal Research Unit, Level 1 Learning and Research Building, Southmead Hospital, Westbury-on-Trym, Bristol, UK
| | - Sian M Noble
- University of Bristol Medical School, Population Health Sciences, Canynge Hall, Bristol, UK
| | - Andrew D Beswick
- University of Bristol Medical School, Translational Health Sciences, Musculoskeletal Research Unit, Level 1 Learning and Research Building, Southmead Hospital, Westbury-on-Trym, Bristol, UK
| | - Amanda Burston
- University of Bristol Medical School, Translational Health Sciences, Musculoskeletal Research Unit, Level 1 Learning and Research Building, Southmead Hospital, Westbury-on-Trym, Bristol, UK
| | - Kirsty Garfield
- University of Bristol Medical School, Population Health Sciences, Canynge Hall, Bristol, UK
- University of Bristol Faculty of Health Sciences, Bristol Randomised Trials Collaboration, Canynge Hall, Bristol, UK
| | - Rachael Gooberman-Hill
- University of Bristol Medical School, Translational Health Sciences, Musculoskeletal Research Unit, Level 1 Learning and Research Building, Southmead Hospital, Westbury-on-Trym, Bristol, UK
- National Institute for Health and Care Research Bristol Biomedical Research Centre, University Hospitals Bristol and Weston NHS Foundation Trust and University of Bristol, Bristol, UK
| | - Shaun R S Harris
- University of Bristol Medical School, Population Health Sciences, Canynge Hall, Bristol, UK
- University of Bristol Faculty of Health Sciences, Bristol Randomised Trials Collaboration, Canynge Hall, Bristol, UK
| | - Setor K Kunutsor
- University of Bristol Medical School, Translational Health Sciences, Musculoskeletal Research Unit, Level 1 Learning and Research Building, Southmead Hospital, Westbury-on-Trym, Bristol, UK
- National Institute for Health and Care Research Bristol Biomedical Research Centre, University Hospitals Bristol and Weston NHS Foundation Trust and University of Bristol, Bristol, UK
| | - J Athene Lane
- University of Bristol Medical School, Population Health Sciences, Canynge Hall, Bristol, UK
- University of Bristol Faculty of Health Sciences, Bristol Randomised Trials Collaboration, Canynge Hall, Bristol, UK
| | - Alasdair MacGowan
- Department of Medical Microbiology, Southmead Hospital, North Bristol NHS Trust, Bristol, Westbury-on-Trym, UK
| | - Sanchit Mehendale
- Department of Trauma and Orthopaedics, Bristol Royal Infirmary, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, UK
| | - Andrew J Moore
- University of Bristol Medical School, Translational Health Sciences, Musculoskeletal Research Unit, Level 1 Learning and Research Building, Southmead Hospital, Westbury-on-Trym, Bristol, UK
| | - Ola Rolfson
- Department of Orthopaedics at Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Mölndal, Sweden
| | - Jason C J Webb
- University of Bristol Medical School, Translational Health Sciences, Musculoskeletal Research Unit, Level 1 Learning and Research Building, Southmead Hospital, Westbury-on-Trym, Bristol, UK
| | - Matthew Wilson
- The Exeter Hip Unit, Princess Elizabeth Orthopaedic Hospital, Royal Devon and Exeter Hospital NHS Foundation Trust, Exeter, UK
| | - Michael R Whitehouse
- University of Bristol Medical School, Translational Health Sciences, Musculoskeletal Research Unit, Level 1 Learning and Research Building, Southmead Hospital, Westbury-on-Trym, Bristol, UK
- National Institute for Health and Care Research Bristol Biomedical Research Centre, University Hospitals Bristol and Weston NHS Foundation Trust and University of Bristol, Bristol, UK
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Tassani S, Tio L, Castro-Domínguez F, Monfort J, Monllau JC, González Ballester MA, Noailly J. Relationship Between the Choice of Clinical Treatment, Gait Functionality and Kinetics in Patients With Comparable Knee Osteoarthritis. Front Bioeng Biotechnol 2022; 10:820186. [PMID: 35360402 PMCID: PMC8962661 DOI: 10.3389/fbioe.2022.820186] [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: 11/22/2021] [Accepted: 01/31/2022] [Indexed: 11/13/2022] Open
Abstract
Objective: The objective of this study was to investigate the relationship between the choice of clinical treatment, gait functionality, and kinetics in patients with comparable knee osteoarthritis.Design: This was an observational case-control study.Setting: The study was conducted in a university biomechanics laboratory.Participants: Knee osteoarthritis patients were stratified into the following groups: clinical treatment (conservative/total knee replacement (TKR) planned), sex (male/female), age (60–67/68–75), and body mass index (BMI) (<30/≥30). All patients had a Kellgren–Lawrence score of 2 or 3 (N = 87).Main Outcome Measures: All patients underwent gait analysis, and two groups of dependent variables were extracted:• Spatiotemporal gait variables: gait velocity, stride time, and double-support time, which are associated with patient functionality.• Kinetic gait variables: vertical, anterior–posterior, and mediolateral ground reaction forces, vertical free moment, joint forces, and moments at the ankle, knee, and hip. Multifactorial and multivariate analyses of variance were performed.Results: Functionality relates to treatment decisions, with patients in the conservative group walking 25% faster and spending 24% less time in the double-support phase. However, these differences vary with age and are reduced in older subjects. Patients who planned to undergo TKR did not present higher knee forces, and different joint moments between clinical treatments depended on the age and BMI of the subjects.Conclusions: Knee osteoarthritis is a multifactorial disease, with age and BMI being confounding factors. The differences in gait between the two groups were mitigated by confounding factors and risk factors, such as being a woman, elderly, and obese, reducing the variability of the gait compression loads. These factors should always be considered in gait studies of patients with knee osteoarthritis to control for confounding effects.
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Affiliation(s)
- Simone Tassani
- BCN MedTech, DTIC, Universitat Pompeu Fabra, Barcelona, Spain
- *Correspondence: Simone Tassani,
| | | | | | - Jordi Monfort
- IMIM, Barcelona, Spain
- Rheumatology Department, Hospital del Mar, Barcelona, Spain
| | - Juan Carlos Monllau
- IMIM, Barcelona, Spain
- Orthopedic Surgery and Traumatology Department, Hospital del Mar, Barcelona, Spain
| | | | - Jérôme Noailly
- BCN MedTech, DTIC, Universitat Pompeu Fabra, Barcelona, Spain
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