[Objective]To compare the clinical efficacy of ulnar oblique shortening osteotomy versus the osteotomy combined with wrist arthroscopic debridement and repair in the treatment of ulnar impaction syndrome.[Methods]A retrospective study was performed on 40 pa-tients who received surgical treatment for ulnar impaction syndrome in our hospital from June 2014 to June 2021.Based on doctor-patient communication,20 patients underwent simple oblique-shortening osteotomy of ulna(shortening group),while the remaining 20 patients un-derwent oblique-shortening osteotomy of ulna combined with wrist arthroscopy(combination group).The perioperative,follow-up and imag-ing data were compared between the two groups.[Results]All patients in both groups had operation performed successfully.The shortening group proved significant better than the combination group regarding operation time[(61.3±17.4)min vs(119.5±29.4)min,P＜0.05],incision length[(6.2±1.6)cm vs(8.4±2.1)cm,P＜0.05]and blood loss[(48.3±9.3)ml vs(61.3±10.2)ml,P＜0.05],whereas no significant differences in intraoperative fluoroscopy times,length of stay,incision healing time and active activity time between the two groups(P＞0.05).The follow-up period lasted for 12 to 30 months,and there was no significant difference in the time to resume full weight-bearing activities between the two groups(P＞0.05).the VAS score,modified Mayo score,carpal palmar flexion-dorsalis extension,ulnar-radial deviation,and pronation-supination range of motion(ROM)significantly improved in both groups over time(P＜0.05).The combination group was significantly better than the shortening group in terms of VAS[6 months postoperatively(1.9±0.9)vs(2.7±1.3),P＜0.05;the last follow-up(1.5±1.1)vs(2.5±1.2),P＜0.05],Mayo score[6 months postoperatively(86.2±10.3)vs(78.3±9.5),P＜0.05;the last follow-up(87.5±7.0)vs(80.5±10.4),P＜0.05].However,there was no significant differences in ROMs between the two groups at any time points accordingly(P＞0.05).Radiographically,ul-nar variation length and lateral radioulnar space were significantly improved in both groups immediately after surgery(P＜0.05),whereas which were not significantly different between the two groups at any corresponding time points(P＞0.05).[Conclusion]Compared with the simple oblique-shortening osteotomy of ulna,the osteotomy combined with wrist arthroscopic surgery does better relieve the pain and re-store the wrist function.
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