Provocation tests in doppler ultrasonography for carpal tunnel syndrome.

Abstract:

INTRODUCTION:Doppler ultrasonography (DU) has recently been shown to be useful in imaging carpal tunnel syndrome (CTS). In this study, we aim to characterize the changes seen after exercise and electrical stimulation. METHODS:Five patients with CTS were recruited with 5 age-matched subjects. DU was used to visualize the median nerve, flexor tendon, and bone at base line and after 1 minute of: (a) median nerve motor stimulation, (b) median nerve sensory stimulation, (c) abductor pollicis brevis contraction, and (d) adductor digiti minimi contraction. RESULTS:Blood flow in the median nerve was greater after APB exercise. Furthermore, blood flow in the median nerve was greater in cases than controls after APB exercise. At baseline, blood flow in the flexor tendon was greater in cases than controls. CONCLUSIONS:While limited by sample size, this study demonstrates that exercise of median innervated muscles may be useful in enhancing diagnostic utility of DU for CTS.

journal_name

Muscle Nerve

journal_title

Muscle & nerve

authors

Ng ES,Ng KW,Wilder-Smith EP

doi

10.1002/mus.23637

subject

Has Abstract

pub_date

2013-01-01 00:00:00

pages

116-7

issue

1

eissn

0148-639X

issn

1097-4598

journal_volume

47

pub_type

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