Sezione di Chirurgia Protesica ad Indirizzo Robotico, Unità di Traumatologia dello Sport, U.O.C Ortopedia e Traumatologia, Fondazione Poliambulanza, Via Bissolati 57, 25124, Brescia, Italy.
U.O.C Ortopedia e Traumatologia, Fondazione Poliambulanza, Via Bissolati 57, Brescia, Italy.
Arch Orthop Trauma Surg. 2023 May;143(5):2693-2699. doi: 10.1007/s00402-022-04562-7. Epub 2022 Jul 30.
Unicompartmental knee arthroplasty (UKA) accounts for 10% of knee arthroplasty procedures in Europe. Fixed bearing UKA designs have shown favorable survivorship in registries when compared with mobile bearings. This study analyses long-term follow-up of patients with a medial fixed bearing metal backed tibial UKA and reports 15 years survivorship and clinical outcomes.
Data were collected prospectively for 148 medial unicompartmental fixed bearing metal backed UKAs implanted in 148 patients in two high volumes knee arthroplasty centers between January 2005 and December 2007. The indication was osteoarthritis in all but 2 patients. Patients' reported outcome scores were documented at last follow up. The mean patient age at time of surgery was 65 years.
At final follow up, outcome and survivorship data were collected for 124 medial fixed bearing UKAs. Thirteen patients underwent revision; average time to revision was 77 months (SD 35.31). The Kaplan-Meier analysis demonstrated a survivorship of 97.65% at 69 months and of 89,52%. at 120 months and 173 months of follow-up. When revisions for infection were excluded, the survivorship of the implant was 90.3% at the last of follow up. The mean OKS was 43.02 (SD 5.1) at the last follow-up, and the mean FJS was 77.6 (SD 6.9).
This Medial fixed bearing metal backed UKA demonstrates promising long-term survivorship and patient outcomes. It appears to be a suitable and reasonably lasting option for the treatment of medial compartment OA.
在欧洲，单髁膝关节置换术（UKA）占膝关节置换术的 10%。与活动衬垫相比，固定衬垫 UKA 设计在注册研究中显示出较好的生存率。本研究分析了内侧固定衬垫金属背衬胫骨 UKA 患者的长期随访结果，并报告了 15 年的生存率和临床结果。
在 2005 年 1 月至 2007 年 12 月期间，在两个高容量膝关节置换中心，前瞻性地收集了 148 例内侧单髁固定衬垫金属背衬 UKA 植入的 148 例患者的数据。除 2 例患者外，所有患者的适应证均为骨关节炎。在最后一次随访时记录了患者的报告结局评分。手术时患者的平均年龄为 65 岁。
在最终随访时，收集了 124 例内侧固定衬垫 UKA 的结局和生存率数据。13 例患者接受了翻修；平均翻修时间为 77 个月（SD 35.31）。Kaplan-Meier 分析显示，69 个月时生存率为 97.65%，120 个月和 173 个月时生存率为 89.52%。当排除感染翻修时，在最后一次随访时，植入物的生存率为 90.3%。最后一次随访时，OKS 的平均得分为 43.02（SD 5.1），FJS 的平均得分为 77.6（SD 6.9）。
这种内侧固定衬垫金属背衬 UKA 显示出良好的长期生存率和患者结局。对于内侧间室 OA 的治疗，它似乎是一种合适且合理持久的选择。
