Tägil M, Geijer M, Malcus P, Kopylov P
Department of Orthopedics, Lund University Hospital, Lund, Sweden.
J Hand Surg Eur Vol. 2009 Dec;34(6):743-7. doi: 10.1177/1753193409346793. Epub 2009 Sep 28.
Eighteen out of 18 rheumatoid patients (at one centre of a two-centre 30 patient study previously reported) with a mean age of 56 years, and 72/72 operated joints were randomized to Avanta/Sutter or Swanson MCP prostheses and followed for 5 years. Both ulnar deviation and extension lag were improved already at 6 weeks and remained improved at 5 years. The Avanta prosthesis had a better range of motion (ROM) than the Swanson. Six of nine patients with Avanta/Sutter implants had at least one implant fracture compared to 1/9 patients with the Swanson implant (P = 0.05) but fracture did not change the outcome subjectively. The ROM at 3 months correlated with the occurrence of an implant fracture at 5 years and a greater early ROM may be related to implant fracture. At 5 years patients remained satisfied and the deformities remained corrected.
在一项先前报道的两中心30例患者的研究中，来自一个中心的18例类风湿患者（平均年龄56岁）以及72个接受手术的关节被随机分配至使用Avanta/Sutter或Swanson掌指关节假体，并随访5年。尺侧偏斜和伸展滞后在6周时就已得到改善，且在5年时仍保持改善状态。Avanta假体的活动范围（ROM）比Swanson假体更好。接受Avanta/Sutter植入物的9例患者中有6例至少发生了1次植入物骨折，而接受Swanson植入物的患者中这一比例为1/9（P = 0.05），但骨折在主观上并未改变结果。3个月时的ROM与5年时植入物骨折的发生相关，早期更大的ROM可能与植入物骨折有关。5年时患者仍感到满意，畸形也仍得到矫正。
