J Korean Foot Ankle Soc.  2016 Mar;20(1):23-26. 10.14193/jkfas.2016.20.1.23.

The Efficacy of Nerve Conduction Study on Tarsal Tunnel Syndrome

• Yoon JY
• Lee KC
• Oh WS
• Hong JH
• Kwak JH
• Park HK

• KMID: 2158424
• DOI: http://doi.org/10.14193/jkfas.2016.20.1.23

Abstract

PURPOSE
Nerve conduction study (NCS) test is a standard diagnostic study of the tarsal tunnel syndrome. The purpose of this study was to 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 male and 18 female patients with mean age of 49.2 years old and the average follow-up period was 15.5 months. NCS, pain visual analogue scale (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 patients consisted of 9 positive (28.1%), 16 improved (50.0%), and 7 negative (21.9%) postoperatively. VAS score was 7.4 preoperatively and 4.4 postoperatively. 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%), 16 good (50.0%), 4 fair (12.5%), and 5 poor (15.6%) patients. Sixteen patients were negative on the postoperative NCS, with a VAS score of 3.75, 1 excellent (6.3%), 11 good (68.8%), 2 fair (12.5%), and 2 poor (12.5%). There was no statistical correlation between the preoperative NCS and postoperative VAS score (p=0.10), between preoperative NCS and postoperative satisfaction (p=0.799), between preoperative NCS 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 postoperative result.

Keyword

Tarsal tunnel syndrome; Neural conduction

MeSH Terms

Female
Follow-Up Studies
Humans
Male
Neural Conduction*
Tarsal Tunnel Syndrome*

Reference

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