[Objective]To explore the factors affecting the consequence of ulnar nerve anterior transposition(UNAT)for cubital tunnel syndrome(CTS).[Methods]A retrospective study was done on 89 patients who received UNAT for CTS in our department from December 2018 to June 2021.The clinical status was evaluated using Gu's scale,and the patients were divided into good group and poor group at the last follow-up.The factors impacting outcome of UNAT for CTS were investigated by univariate comparison and binary logistic regression analysis.[Results]All patients had the ulnar nerve release and anterior transposition performed smoothly without incision infection,non-union and other complications,and followed up for 18 to 36 months,with an average of 26.5 months.According to Gu's functional evalua-tion criteria for CTS,46 patient were excellent,25 cases were good,11 cases were fair,7 cases were poor,with excellent and good rate of 79.8％.A total of 71 patients who rated as excellent and good were classified into the good group,while the remaining 18 patients rated as fair and poor were classified into the poor group.Regarding univariate comparison,the poor group was significantly greater than the good group in terms of diabetes mellitus[y/n,(10/61)vs(7/11),P=0.017],the elbow injury history[(5/66)vs(10/8),P＜0.001],preoperative dis-ease severity[mild/moderate/severe,(9/43/19)vs(0/6/12),P＜0.001],elbow osteoarthritis[(5/66)vs(5/13),P=0.013].However,there were no significant differences between the two groups in age,sex,affected side,and history of essential hypertension(P＞0.05).As results of lo-gistic regression,diabetes mellitus(OR=4.652,95％CI 1.091～19.832,P=0.038),history of elbow trauma(OR=10.111,95％CI 2.252～45.398,P=0.003),preoperative disease severity(OR=4.193,95％CI 1.138～15.456,P=0.031)were independent risk factors for poor clinical outcomes of UNAT for CTS.[Conclusion]Diabetes mellitus,history of elbow trauma and preoperative disease severity are risk factors for poor clinical effect of ulnar nerve anterior transposition for cubital tunnel syndrome,which should be paid attention to by clinicians.
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