Monreal Ricardo
Clínicas Maison de Santé, Lima, Peru.
Hand (N Y). 2016 Sep;11(3):336-340. doi: 10.1177/1558944715626929. Epub 2016 Feb 2.
The most frequent deformity of the hand occurring in patients with RA affects the metacarpophalangeal (MCP) joint and it is characterized by a volar subluxation of the proximal phalanges and ulnar drift of the fingers. The Extensor Indicis Proprius (EIP) tenodesis for correction of ulnar deviation of fingers (II to V) was performed in 10 hands (40 fingers and 5 patients). There was complete correction of the subluxation or dislocation and almost complete correction of the ulnar drift of the metacarpophalangeal joints at the initial postoperative evaluation (three to four months after surgery). However, at final evaluation (eight to twelve months after the operation), all of the digits had some recurrence of ulnar deviation. The EIP tenodesis provides a correct forces vector to maintain the fingers in proper alignment following correction of ulnar deviation.
类风湿关节炎（RA）患者中最常见的手部畸形影响掌指（MCP）关节，其特征为近端指骨掌侧半脱位和手指尺侧偏斜。对10只手（40根手指，5例患者）进行了示指固有伸肌（EIP）肌腱固定术以纠正手指（II至V）的尺侧偏斜。术后初期评估（术后三至四个月）时，半脱位或脱位得到完全纠正，掌指关节尺侧偏斜几乎完全纠正。然而，在最终评估（术后八至十二个月）时，所有手指均出现了一定程度的尺侧偏斜复发。EIP肌腱固定术提供了正确的力矢量，以在纠正尺侧偏斜后使手指保持正确的对线。
