关节镜下自体掌长肌腱移植治疗7例慢性下尺桡关节不稳

目的：观察关节镜辅助下取自体掌长肌腱解剖重建远端桡尺韧带治疗慢性下尺桡关节不稳的临床疗效。方法对7例保守治疗无效的慢性下尺桡关节不稳患者，腕关节探查明确诊断，然后取自体掌长肌腱解剖重建远端桡尺韧带；平均随访12个月，记录患者手术前后的握力、腕关节活动度；采用视觉模拟评分（VAS）评估腕关节的疼痛状况，利用MMWS评分和DASH评分评估腕关节的功能状态。结果在腕关节活动时VAS评分从术前的（7±2）分恢复至术后的（3±3）分，MMWS评分为术前（50±9）分，术后（83±11）分，DASH评分从术前（37±15）分提升至术后（16±10）分，差异有统计学意义；握力术前为84．5±16．0，术后93．4±11．0，差异有统计学意义。腕关节屈伸活动度，术前为93．5％±6．0％，术后为96．4％±3．0％，旋前旋后活动度术前为92．6％±7．0％，术后为97．2％±5．0％，虽有增加，但差异没有统计学意义。结论在关节镜辅助下解剖重建远端桡尺韧带是治疗慢性下尺桡关节不稳的有效方法，短期随访效果满意。

Reconstruction of distal radioulnar ligament by autologous tendon palmaris longus transplantation under arthroscopic assistance for treating chronic distal radioulnar joint instability

Objective To investigate the clinical effect of distal radioulnar ligament reconstruction by autologous tendon pal‐maris longus transplantation under arthroscopic assistance in treating chronic instability of the distal radioulnar joint .Methods Seven patients with chronic instability of the distal radioulnar joint after failure of conservation therapy were definitely diagnosed by the wrist joint exploration .Then the autologous tendon palmaris longus was taken for conducting the anatomical reconstruction of distal radioulnar ligament ;the average follow up was 12 months .The preoperative and postoperative grip strength and the motion of wrist joint were recorded ;the pain status of the wrist joint was evaluated by using the visual analogue scale (VAS) ,and the wrist function status was evaluated by using the Disabilities of the Arm ,Shoulder and Hand(DASH) and the Modified Mayo Wrist Score (MMWS) .Results The average VAS score of the rist joint motion was recovered from (7 ± 2) points before operation to (3 ± 3) points after operation ,the MMWS score was improved from preoperative (50 ± 9) points to postoperative (83 ± 11) points ,the DASH score was decreased significantly from preoperative (37 ± 15) points to postoperative (16 ± 10) points ,the grip strength was improved from preoperative 84 .5 ± 16 .0 to postoperative 93 .4 ± 11 .0 ,the differences were statistically significant .The mean range of motion(ROM ) in flexion/extension of the wrist was increased from preoperative 93 .5% ± 6 .0% to postoperative 96 .4% ± 3 .0% ,the ROM in pronation/supination of the forearm was increased from preoperative 92 .6% ± 7 .0% to postoperative 97 .2% ± 5 .0% ,but the differences were not statistically significant .Conclusion Under arthroscopic assistance ,the anatomical reconstruc‐tion of the distal radioulnar ligaments is an effective treatment method for treating chronic distal radioulnar joint instability ,its short term follow up has satisfactory effect .