족근관 증후군에서의 신경 전도 검사의 효용성

Abstract

Purpose: Nerve conduction study (NCS) test is a standard diagnostic study of the tarsal tunnel syndrome. The purpose of this study wasto determine the relation between the results of the NCS and postoperative clinical results. Materials and Methods: From June 2004 to July 2015, 104 patients were diagnosed with tarsal tunnel syndrome and treated surgically. Of 104 patients diagnosed through NCS preoperatively and postoperatively, 41 patients were included in this study. There were 23 maleand 18 female patients with mean age of 49.2 years old and the average follow-up period was 15.5 months. NCS, pain visual analoguescale (VAS) score, and subjective satisfaction were examined preoperatively and postoperatively. Results: On the preoperative NCS, 32 patients (78.0%) were positive and 9 patients (22.0%) were negative, and 32 positive NCS patientsconsisted of 9 positive (28.1%), 16 improved (50.0%), and 7 negative (21.9%) postoperatively. VAS score was 7.4 preoperatively and 4.4postoperatively. According to satisfaction, there were 8 excellent (19.5%), 21 good (51.2%), 6 fair (14.6%), and 6 poor (14.6%) patients. For 32 patients who were positive on the preoperative NCS, the postoperative VAS score was 4.87 and there were 7 excellent (21.9%), 16good (50.0%), 4 fair (12.5%), and 5 poor (15.6%) patients. Sixteen patients were negative on the postoperative NCS, with a VAS score of3.75, 1 excellent (6.3%), 11 good (68.8%), 2 fair (12.5%), and 2 poor (12.5%). There was no statistical correlation between the preoperativeNCS and postoperative VAS score (p=0.10), between preoperative NCS and postoperative satisfaction (p=0.799), between preoperativeNCS and postoperative VAS score (p=0.487), and between postoperative NCS and postoperative satisfaction (p=0.251). Conclusion: For patients diagnosed with tarsal tunnel syndrome and treated surgically, NCS showed little correlation with postoperativeresult.