Faculty of Medicine, University of Turku, Luolavuorentie 2, 20700, Turku, Finland.
Tyks Orto, Turku University Hospital, University of Turku, Turku, Finland.
Eur J Orthop Surg Traumatol. 2021 Aug;31(6):1207-1213. doi: 10.1007/s00590-020-02861-6. Epub 2021 Jan 9.
The semi-constrained Discovery® Elbow System (LimaCorporate, San Daniele del Friuli, Italy) allows varus-valgus laxity of 7° [8]. It has been reported to provide good pain relief and increased range of motion [5, 9] on mid-term follow-up. The aim of the study was to evaluate long-term outcomes of total elbow arthroplasty using the Discovery® Elbow System (LimaCorporate, San Daniele del Friuli, Italy).
The Mayo Elbow Performance Score (MEPS) and elbow range of motion (ROM) were assessed. Plain radiographs were obtained to assess radiolucency in the humerus and ulna. The data were extracted from electronic patient records.
During the follow-up period of 105.4 (range 24.6-179.9) months, 132 patients (153 elbows) underwent surgery. The cause of surgery was rheumatoid arthritis in 105 (71%) cases, posttraumatic or primary arthritis in 17 (13%) and fracture in 10 (6%) patients. The total MEPS increased on average by 35.0 points. Elbow extension deteriorated by 5.0°. Respectively, flexion improved by 10.0° and pronation by 5.0°. The difference in supination was 0.0°. Pain severity improved by 2.5 points in motion and by 5.5 points at rest. During follow-up, 24 (16%) patients needed revision surgery. The most common cause for revision was periprosthetic fracture. Radiolucent lines were seen in all zones in both the ulna and the humerus. The Kaplan-Meier survival at 5 years was 88% and 79% at 10-14 years.
The Discovery® Elbow System provides good results in ROM and pain relief of the elbow. The revision rate was relatively high (16% of patients).
IV.
半约束式 Discovery® 肘关节系统（意大利圣丹尼埃莱弗里乌利的 LimaCorporate）允许存在 7° 的外翻-内翻松弛度[8]。据报道，该系统在中期随访中可提供良好的疼痛缓解和更大的活动范围[5,9]。本研究旨在评估使用 Discovery® 肘关节系统（意大利圣丹尼埃莱弗里乌利的 LimaCorporate）进行全肘关节置换的长期结果。
评估 Mayo 肘关节功能评分（MEPS）和肘关节活动范围（ROM）。获取平片以评估肱骨和尺骨的透亮线。数据从电子患者记录中提取。
在 105.4 个月（范围 24.6-179.9）的随访期间，132 例患者（153 个肘关节）接受了手术。手术原因是类风湿性关节炎 105 例（71%），创伤后或原发性关节炎 17 例（13%），骨折 10 例（6%）。总的 MEPS 平均增加了 35.0 分。肘关节伸展恶化 5.0°。分别地，屈曲改善 10.0°，旋前改善 5.0°。旋后没有差异。活动时疼痛严重程度改善 2.5 分，休息时改善 5.5 分。随访期间，24 例（16%）患者需要进行翻修手术。最常见的翻修原因是假体周围骨折。在肱骨和尺骨的所有区域均可见透亮线。5 年时 Kaplan-Meier 生存率为 88%，10-14 年时为 79%。
Discovery® 肘关节系统在肘关节的 ROM 和疼痛缓解方面提供了良好的结果。翻修率相对较高（16%的患者）。
IV 级。
