Abstract| Volume 39, ISSUE 9, SUPPLEMENT , e30, September 2014

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Postoperative Follow-Up of Extreme Carpal Tunnel Syndrome: How Long Does It Take to Recover Thumb Opposition?

Level 3 Evidence
      In extreme carpal tunnel syndrome (CTS), thumb opposition is impossible due to thenar muscle atrophy. Affected patients demonstrate undetectable compound muscle action potentials of the abductor pollicis brevis (APB-CMAP) following stimulation of the median nerve at the wrist. At the ASSH 2012 Annual Meeting, the authors reported that thumb opposition recovered in more than half of extreme CTS patients one year or longer after carpal tunnel release. This study investigated the length of time required to recover thumb opposition and at what time after surgery recovery could be predicted.
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