Author/Authors :
Ahadi, Tannaz Physical Medicine and Rehabilitation - Firoozgar Hospital - Iran University of Medical Sciences, Tehran, Iran , Raissi, Gholam Reza Physical Medicine and Rehabilitation - Firoozgar Hospital - Iran University of Medical Sciences, Tehran, Iran , Yavari, Masood Panzdah Khordad Hospital - Shahid Beheshti University of Medical Sciences, Tehran, Iran , Majidi, Lobat Physical Medicine and Rehabilitation - Firoozgar Hospital - Iran University of Medical Sciences, Tehran, Iran
Abstract :
Background: Two main muscles studied in the hand for evaluation of median nerve injuries are
opponens pollicis (OP) and abductor pollicis brevis (APB). However, Riché-Cannieu communicating
branch (RCCB) may limit the use of these muscles in electrodiagnosis. This condition is confusing in
the case of median nerve injuries. This study was conducted to evaluate the prevalence of RCCB.
Methods: Twenty-three consecutive cases of complete median nerve injury were studied. Evoked
responses via stimulation of median and ulnar nerves in the wrist and recording with needle in the
thenar area were studied.
Results: Of the patients, 82.6% exhibited RCCB. In 14 (60.8%) cases the OP and in 19(82.6%)
cases APB was supplied by the ulnar nerve.
Conclusion: RCCB was detected to be 60.8% in OP and 82.6% in APB, so OP is preferable to APB
in the study of median nerve.
Keywords :
Nerve Injury , Ulnar-to-Median Nerve Anastomosis , Ulnar Nerve , Electromyography , Median Nerve
