ArticleArchives of orthopaedic and trauma surgery2024
Metal-backed versus all-poly tibia in the original cartier unicompartmental knee arthroplasty: outcomes and survivorship at long-term follow-up.
Article in Archives of orthopaedic and trauma surgery, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Outcomes and short-term survivorship of fixed-bearing all-poly unicompartmental knee arthroplasty. A retrospective single-center study of 42 prostheses with a main follow-up of 32.3 months.Archives of orthopaedic and trauma surgery · 2026Article
- Metal-backed versus all-poly tibia in the original cartier unicompartmental knee arthroplasty: outcomes and survivorship at long-term follow-up.Archives of orthopaedic and trauma surgery · 2024Article
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Authors and funding
5 authors.
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No grant is acknowledged in the PubMed record.
Abstract
purposeUnicompartmental knee arthroplasty (UKA) is a viable option for localized osteoarthritis (OA) or avascular osteonecrosis with several advantages over total knee arthroplasty (TKA). UKA implants may feature a tibial component either all-polyethylene (AP) or metal-backed (MB). This study aims to retrospectively compare the clinical outcomes and survivorship of 74 UKAs over 16 years, focusing on comparing the results and survivorship of MB versus AP tibial tray. MATERIALS AND
methodsThis retrospective study assesses 74 patients who underwent medial unicompartmental knee arthroplasty (UKA) using ACCURIS Uni Knee System (Smith & Nephew, Memphis, TN, USA) implants between January 2003 and December 2008. Patients were divided in two groups: all-polyethylene (AP) tibial implants and metal-backed (MB) tibial components. The two groups were compared at final follow-up regarding survivorship, revision rates and clinical outcomes using the WOMAC score, Oxford Knee Score (OKS) and Forgotten Joint Score (FJS-12).
resultsBetween January 2003 and December 2008, 74 medial unicompartmental knee arthroplasties were implanted in 74 patients. Clinical outcomes were assessed with a mean follow-up of 214.4 months. The implant survivorship was 97.3% for the MB-UKAs and 94.6% for the AP-UKAs (p = 0.55). The average OKS in the MB-UKAs was 42, while in the AP-UKAs 41.6 (p = 0.53), with a total of 64.9% of patients exhibiting excellent outcomes (OKS > 41) and 35.1% showing good outcomes (OKS: 34-41). The average FJS-12 at final follow-up was 81.5 for the MB-UKAs and 82.3 for the AP-UKAs (p = 0.34). The average WOMAC score was 20. 9 for the MB-UKAs and 22.4 for the AP-UKAs (p = 0.55). No statistically significant differences were found between AP-UKAs and MB-UKAs in terms of patient demographics, surgical indications, or clinical outcomes.
conclusionsThis research demonstrated outstanding implant durability and favorable outcomes during extended follow-up periods for both cohorts undergoing medial UKA utilizing the original fixed bearing Cartier design. The results regarding both survivorship and PROMs were equivalent the AP group and the MB group.
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