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Ultrasound‐guided hydrodissection decreases gliding resistance of the median nerve within the carpal tunnel
Author(s) -
Evers Stefanie,
Thoreson Andrew R.,
Smith Jay,
Zhao Chunfeng,
Geske Jennifer R.,
Amadio Peter C.
Publication year - 2018
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.25723
Subject(s) - cadaveric spasm , carpal tunnel syndrome , medicine , median nerve , carpal tunnel , ultrasound , cadaver , biomechanics , anatomy , electromyography , surgery , physical medicine and rehabilitation , radiology
: The aim of this study was to assess alterations in median nerve (MN) biomechanics within the carpal tunnel resulting from ultrasound‐guided hydrodissection in a cadaveric model. Methods : Twelve fresh frozen human cadaver hands were used. MN gliding resistance was measured at baseline and posthydrodissection, by pulling the nerve proximally and then returning it to the origin. Six specimens were treated with hydrodissection, and 6 were used as controls. Results : In the hydrodissection group there was a significant reduction in mean peak gliding resistance of 92.9 ± 34.8 mN between baseline and immediately posthydrodissection (21.4% ± 10.5%; P = 0.001). No significant reduction between baseline and the second cycle occurred in the control group: 9.6 ± 29.8 mN (0.4% ± 5.3%; P = 0.467). Discussion : Hydrodissection can decrease the gliding resistance of the MN within the carpal tunnel, at least in wrists unaffected by carpal tunnel syndrome. A clinical trial of hydrodissection seems justified. Muscle Nerve 57 : 25–32, 2018