Department of Orthopaedics, IRCCS Ospedale Sacro Cuore Don Calabria, Negrar Di Valpolicella, Italy.
Clinical Orthopaedics, Department of Clinical and Molecular Science, School of Medicine, Università Politecnica Delle Marche, Via Tronto, 10/a, 60126, Ancona, AN, Italy.
J Orthop Traumatol. 2024 May 4;25(1):24. doi: 10.1186/s10195-024-00765-3.
This retrospective medium-term follow-up study compares the outcomes of medial fixed-bearing unicompartmental knee arthroplasty (mUKA) using a cemented metal-backed (MB) or an all-polyethylene (AP) tibial component.
The database of our institution was mined for primary mUKA patients implanted with an MB or an AP tibial component (the MB-UKA and AP-UKA groups, respectively) from 2015 to 2018. We compared patient demographics, patient-reported outcome measures (PROMs), and motion analysis data obtained with the Riablo™ system (CoRehab, Trento, Italy). We conducted propensity-score-matching (PSM) analysis (1:1) using multiple variables.
PSM analysis yielded 77 pairs of MB-UKA and AP-UKA patients. At 5 years, the physical component summary (PCS) score was 52.4 ± 8.3 in MB-UKA and 48.2 ± 8.3 in AP-UKA patients (p < 0.001). The Forgotten Joint Score (FJS-12) was 82.9 ± 18.8 in MB-UKAs and 73.4 ± 22.5 in AP-UKAs (p = 0.015). Tibial pain was reported by 7.8% of the MB-UKA and 35.1% of the AP-UKA patients (p < 0.001). Static postural sway was, respectively, 3.9 ± 2.1 cm and 5.4 ± 2.3 (p = 0.0002), and gait symmetry was, respectively, 92.7% ± 3.7 cm and 90.4% ± 5.4 cm (p = 0.006). Patient satisfaction was 9.2 ± 0.8 in the MB-UKA and 8.3 ± 2.0 in the AP-UKA group (p < 0.003).
MB-UKA patients experienced significantly better 5-year static sway and gait symmetry outcomes than AP-UKA patients. Although the PROMs of the two groups overlapped, MB-UKA patients had a lower incidence of tibial pain, better FJS-12 and PCS scores, and were more satisfied.
本回顾性中期随访研究比较了使用骨水泥固定金属背衬（MB）或全聚乙烯（AP）胫骨组件的内侧单髁膝关节置换术（mUKA）的结果。
对我院数据库进行挖掘，纳入 2015 年至 2018 年期间植入 MB 或 AP 胫骨组件的原发性 mUKA 患者（MB-UKA 和 AP-UKA 组）。我们比较了患者人口统计学资料、患者报告的结果测量（PROMs）和使用 Riablo™系统（CoRehab，特伦托，意大利）获得的运动分析数据。我们使用多个变量进行了倾向评分匹配（PSM）分析（1:1）。
PSM 分析得出 77 对 MB-UKA 和 AP-UKA 患者。5 年后，MB-UKA 患者的物理成分综合评分（PCS）为 52.4±8.3，AP-UKA 患者为 48.2±8.3（p<0.001）。MB-UKA 患者的遗忘关节评分（FJS-12）为 82.9±18.8，AP-UKA 患者为 73.4±22.5（p=0.015）。7.8%的 MB-UKA 患者和 35.1%的 AP-UKA 患者报告胫骨疼痛（p<0.001）。MB-UKA 患者的静态姿势摆动分别为 3.9±2.1cm 和 5.4±2.3cm（p=0.0002），步态对称性分别为 92.7%±3.7cm 和 90.4%±5.4cm（p=0.006）。MB-UKA 患者的满意度为 9.2±0.8，AP-UKA 患者为 8.3±2.0（p<0.003）。
MB-UKA 患者在 5 年的静态摆动和步态对称性方面的结果明显优于 AP-UKA 患者。尽管两组的 PROMs 有重叠，但 MB-UKA 患者胫骨疼痛发生率较低，FJS-12 和 PCS 评分较高，且满意度更高。
