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Ramsodit KR, Sierevelt IN, Janssen ERC, Kaarsemaker S, Haverkamp D. Mid-term clinical outcomes of the uncemented Robert Mathys pressfit cup. World J Clin Cases 2024; 12:3684-3691. [PMID: 38994294 PMCID: PMC11235464 DOI: 10.12998/wjcc.v12.i19.3684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 04/25/2024] [Accepted: 05/16/2024] [Indexed: 06/29/2024] Open
Abstract
BACKGROUND The use of uncemented cups during total hip arthroplasty (THA) has gained popularity in recent years. The Robert Mathys (RM) pressfit cup, an uncemented monoblock implant is expected to preserve bone density due to its composition and external surface, while reducing backside wear with its monoblock construction. These factors should lead to a high survival rate of the implant. AIM To evaluate the mid-term survival and functional outcome of the RM Pressfit cup in a large study population. METHODS Between 2011 and 2020, we included 1324 patients receiving a primary THA using the RM pressfit cup. Final clinical follow-up was performed at 2 years postoperatively with the Dutch arthroplasty register used to assess implant status thereafter. Revision for acetabular failure and reason for revision were reported to evaluate implant survival, while the hip disability and osteoarthritis outcome score (HOOS) scores were used to assess functional outcome. RESULTS The mean age at surgery was 64.9 years. The mean follow-up was 4.6 years. Of the 1324 THAs performed, 13 needed cup revisions within 5 years after index THA: 5 due to aseptic loosening, 6 due to infection, 2 due to dislocation and 2 due to other causes. This resulted in a 5-year cup survival of 98.8% (95%CI: 98.1-99.5). Nine of the cup revisions occurred within the first year after index THA. HOOS scores increased significantly in all domains during the first year and levelled out during the second year. CONCLUSION In the present study, the RM pressfit cup demonstrated excellent clinical outcomes at mid-term follow-up; however, future studies are needed to assess the long-term outcomes of this acetabular implant.
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Affiliation(s)
- Kishan Ritek Ramsodit
- Department of Orthopedic Surgery, Xpert Clinics Amsterdam, Amsterdam 1101EA, North-Holland, Netherlands
| | - Inger N Sierevelt
- Department of Orthopedic Surgery, Xpert Clinics Amsterdam, Amsterdam 1101EA, North-Holland, Netherlands
- Department of Orthopedic, Spaarne Gasthuis Academy, Hoofddorp 2134 TM, Netherlands
| | - Esther R C Janssen
- Department of Orthopaedic Surgery, Viecuri Medical Centre, Venlo 5912 BL, Netherlands
| | - Sjoerd Kaarsemaker
- Department of Orthopaedic Surgery, Viecuri Medisch Centrum, Venlo 5912 BL, Netherlands
| | - Daniël Haverkamp
- Department of Orthopedic Surgery, Xpert Clinics Amsterdam, Amsterdam 1101EA, North-Holland, Netherlands
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Polus JS, Vasarhelyi EM, Lanting BA, Teeter MG. Acetabular cup fixation with and without screws following primary total hip arthroplasty: migration evaluated by radiostereometric analysis. Hip Int 2024; 34:42-48. [PMID: 37016808 PMCID: PMC10787387 DOI: 10.1177/11207000231164711] [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: 07/18/2022] [Accepted: 02/25/2023] [Indexed: 04/06/2023]
Abstract
BACKGROUND Early cup migration after total hip arthroplasty (THA) is correlated to late revision due to aseptic loosening. However, the use of screws for increased cup stability remains unclear and debated. The purpose of this study is to assess acetabular migration between cups fixated with and without the use of screws. METHODS Patients underwent primary THA using either a direct anterior (DA) or a direct lateral (DL) approach. The DA surgeon routinely supplemented cup fixation with 1 or 2 screws while the DL surgeon used no screws. At 7 follow-up visits up to 2 years post operation, patients underwent radiostereometric analysis (RSA) imaging for implant migration tracking. The primary outcome was defined as proximal cup migration measured with model-based RSA. RESULTS 68 patients were assessed up to 2 years post operation, n = 43 received screws and n = 25 did not. The use of screws had a significant effect on cup migration (p = 0.018). From 2 weeks to 2 years post operation, the total mean migration was 0.403 ± 0.681 mm and 0.129 ± 0.272 mm (p = 0.319) for cups with and without screws, respectively. The number of screws used also had a significant impact, with cups fixated with 1 screw migrating more than cups fixated with 2 (p = 0.013, mean difference 0.712 mm). CONCLUSIONS Acetabular cups fixated with only 1 screw resulted in greater migration than cups with no screws or 2 screws, though the mean magnitude was well under the 1.0 mm threshold for unacceptable migration. However, 3 of the 24 patients who received only 1 screw exceeded the 1.0 mm threshold for unacceptable migration. Ultimately, the results of this study show that the use of 2 screws to supplement cup fixation can provide good implant stability that is equivalent to a secure press-fit component with no screws.Clinical trial registration: ClinicalTrials.gov (NCT03558217).
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Affiliation(s)
- Jennifer S Polus
- School of Biomedical Engineering, Western University, London, Ontario, Canada
- Imaging Research Laboratories, Robarts Research Institute, Western University, London, Ontario, Canada
- School of Biomedical Engineering, Collaborative Specialization in Musculoskeletal Health Research, and Bone and Joint Institute, Western University, Canada
| | - Edward M Vasarhelyi
- Division of Orthopaedic Surgery, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - Brent A Lanting
- Division of Orthopaedic Surgery, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - Matthew G Teeter
- School of Biomedical Engineering, Western University, London, Ontario, Canada
- Imaging Research Laboratories, Robarts Research Institute, Western University, London, Ontario, Canada
- School of Biomedical Engineering, Collaborative Specialization in Musculoskeletal Health Research, and Bone and Joint Institute, Western University, Canada
- Department of Medical Biophysics, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
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Miura T, Kijima H, Kimura R, Watanabe J, Okazaki Y, Miyakoshi N. Efficacy and Safety of Acetabular Cup without Screw Fixation in Total Hip Arthroplasty: A Systematic Review and Meta-Analysis. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:medicina58081058. [PMID: 36013524 PMCID: PMC9413682 DOI: 10.3390/medicina58081058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/20/2022] [Accepted: 08/02/2022] [Indexed: 11/16/2022]
Abstract
Background and Objectives: Adequate initial fixation of the uncemented acetabular component in total hip arthroplasty is necessary to achieve long-term survival. Although screw fixation contributes to improved cup stability, there is currently no consensus on the use of this method. This study aimed to assess the existing randomized controlled trials (RCTs) on the efficacy and safety of cup fixation in total hip arthroplasty without screws. Materials and Methods: We searched the EMBASE, MEDLINE, Cochrane Central Register of Controlled Trials, World Health Organization International Clinical Trials Registry Platform, and ClinicalTrials.gov databases to identify RCTs published before February 2022. Primary outcomes were reoperation, cup migration, and Harris Hip Score. Secondary outcomes were the presence of a radiolucent line in the acetabular region, translation and rotation movement, and polyethylene wear. We conducted meta-analyses using the random-effects models. The revised Cochrane risk-of-bias tool was used to assess the risk of bias for outcomes of interest; the Grading of Recommendations, Assessment, Development, and Evaluation approach was used to summarize the body of evidence. Results: We included six reports from four studies. Total hip arthroplasty without screw fixation to the acetabular cup had little to no effect on reoperation (pooled relative risk, 0.98; 95% confidence interval, 0.14–6.68; I2 = 0%), cup migration (pooled relative risk, 1.72; 95% confidence interval, 0.29–10.33; I2 = 1%), Harris Hip Score (mean difference, 1.19; 95% confidence interval, −1.31–3.70; I2 = 0%), radiolucent line (pooled relative risk, 5.91; 95% confidence interval, 0.32–109.35), translation and rotation of all axes, and polyethylene wear (mean difference, 0.01; 95% confidence interval, −0.01–0.04; I2 = 0%), with very low certainty of evidence on all measures. Conclusions: The efficacy of acetabular cups without screw fixation in total hip arthroplasty remains uncertain, suggesting the need for prudent clinical application. Further large-scale, well-designed studies with low risk of bias are required.
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Affiliation(s)
- Takanori Miura
- Department of Orthopedic Surgery, Tazawako Hospital 17-1 Ukiyozaka Obonai, Tazawako, Senboku 014-1201, Akita, Japan
- Correspondence: ; Tel.: +81-187-43-1131
| | - Hiroaki Kijima
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Akita, Japan
| | - Ryota Kimura
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Akita, Japan
| | - Jun Watanabe
- Scientific Research Workshop Peer Support Group (SRWS-PSG), Osaka, Osaka, Japan
- Department of Surgery, Division of Gastroenterological, General and Transplant Surgery, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke City 329-0498, Tochigi, Japan
- Center for Community Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke City 329-0498, Tochigi, Japan
| | - Yuji Okazaki
- Scientific Research Workshop Peer Support Group (SRWS-PSG), Osaka, Osaka, Japan
- Department of Emergency Medicine, Hiroshima City Hiroshima Citizens Hospital, 7-33, Motomachi, Naka-ku, Hiroshima City 730-8518, Hiroshima, Japan
| | - Naohisa Miyakoshi
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Akita, Japan
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