Transtarsal Conduction Velocities of Medial and Lateral Plantar Nerve Recorded by Orthodromic Near-Nerve Recordings.
- Author:
Hee Kyu KWON
1
Author Information
1. Department of Rehabilitation Medicine, College of Medicine, Korea University.
- Publication Type:Original Article
- Keywords:
Tarsal tunnel syndrome;
Transtarsal conduction velocity;
Medial plantar nerve;
Lateral plantar nerve;
Near-nerve recording
- MeSH:
Achilles Tendon;
Calcaneus;
Electrodes;
Needles;
Tarsal Tunnel Syndrome;
Tendons;
Tibial Nerve
- From:Journal of the Korean Academy of Rehabilitation Medicine
2000;24(2):225-229
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
OBJECTIVE: Tarsal tunnel syndrome (TTS) is relatively rare and can be difficult to diagnose with conventional electrodiagnostic techniques. To increase the diagnostic sensitivity, we measured transtarsal conduction velocities of medial and lateral plantar nerves recorded by orthodromic near-nerve recording. METHOD: Twenty normal subjects (aged 24~59) were studied. For below flexor retinaculum (BFR) recordings, near-nerve needle recording electrodes were positioned posteriorly to the flexor digitorum longus tendon in medial plantar nerve and anteriorly to the calcaneus in lateral plantar nerve at the level of lower border of medial malleolus. For above flexor retinaculum (AFR) recordings, near-nerve needle recording electrodes were positioned anteriorly to the Achilles tendon 4 cm proximal to the BFR recording electrodes in medial and lateral plantar nerves. Stimulating ring electrodes were placed to the digit I and V. RESULTS: Transtarsal latencies and conduction velocities for medial plantar nerve were 0.7+/-0.1 msec, 56 6 m/sec, respectively. Transtarsal latencies and conduction velocities for lateral plantar nerve were 0.8+/-0.1 msec, 54+/-6 m/sec, respectively. CONCLUSION: This approach may improve the diagnostic sensitivity in TTS.
