Toledo de Araujo Lucio C, Freitag Jens, Kamath Atul F, Sandiford Nemandra A, Kendoff Daniel
ENDO Klinik Berlin, Berlin, Germany.
Regional Hospital of São José Dr. Homero M Gomes, São José, Santa Catarina, Brazil.
Ann Jt. 2022 Dec 1;8:3. doi: 10.21037/aoj-22-18. eCollection 2023.
This single-center retrospective study evaluated early failure rates for an unicompartmental knee arthroplasty (UKA) system with an anti-allergic surface.
We studied 87 consecutive joints received an UKA at a single center between 2017 and 2020. All patients received a fully cemented anti-allergic Univation-Aesculap partial knee replacement implant with a corundum blasting surface. All joints had precise indication of unicompartmental arthroplasty according to the current criteria of this procedure. The current series was restricted to patients undergoing medial cemented UKA. Medial compartment osteoarthritis was the main indication.
We found early failure (aseptic loosening) was documented in 20 of the 87 joints (23%). The time to failure ranged from 7 weeks to 3 years, for an estimated 33% (15-46%) cumulative hazard rate for implant loosening over three years. No cases of periprosthetic joint infection were found. On average, the patients began complaining about first symptoms during the third month after surgery. In most cases (66.66%), the cement remained fixed to the bone.
Based on these early results, the manufacturer of this implant stopped all further distribution. Continued efforts should be made to understand the clinical and radiographic outcomes of alternative and anti-allergic surface coatings in knee arthroplasty.
本单中心回顾性研究评估了一种具有抗过敏表面的单髁膝关节置换术（UKA）系统的早期失败率。
我们研究了2017年至2020年期间在单一中心连续接受UKA手术的87个关节。所有患者均接受了带有刚玉喷砂表面的全骨水泥固定抗过敏Univation - Aesculap单髁膝关节置换植入物。根据该手术的当前标准，所有关节均有单髁置换的明确指征。本系列研究仅限于接受内侧骨水泥固定UKA的患者。内侧间室骨关节炎是主要指征。
我们发现87个关节中有20个（23%）记录有早期失败（无菌性松动）。失败时间从7周至3年不等，估计三年植入物松动的累积风险率为33%（15 - 46%）。未发现假体周围关节感染病例。平均而言，患者在术后第三个月开始出现首发症状。在大多数情况下（66.66%），骨水泥与骨保持固定。
基于这些早期结果，该植入物制造商停止了所有进一步的分销。应继续努力了解膝关节置换术中替代和抗过敏表面涂层的临床和影像学结果。
