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Independent function in a split flexor carpi radialis transfer.

Aymeric Y T Lim1, Amitabha Lahiri, Barry P Pereira

  • 1Department of Hand and Reconstructive Microsurgery, National University Hospital, 5 Lower Kent Ridge Road, Singapore 119074, Republic of Singapore.

The Journal of Hand Surgery
|January 31, 2004
PubMed
Summary
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This case report demonstrates that forearm bipennate muscles can be surgically divided into independent functional units. This technique allows for targeted tendon transfers to restore finger and thumb extension after radial nerve palsy.

Area of Science:

  • Hand surgery
  • Neurorehabilitation
  • Anatomy

Background:

  • Radial nerve palsy often necessitates tendon transfer surgery to restore hand function.
  • The flexor carpi radialis is a bipennate muscle in the forearm.
  • Understanding muscle compartmentalization is crucial for reconstructive surgery.

Observation:

  • A patient with radial nerve palsy underwent tendon transfer using the flexor carpi radialis.
  • The flexor carpi radialis was longitudinally split along its aponeurosis into two compartments.
  • This division extended from the distal tendon proximally.

Findings:

  • The split flexor carpi radialis compartments facilitated independent finger and thumb extension.
  • This suggests that bipennate muscles in the forearm may possess separate nerve innervations for their compartments.

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  • Successful independent functional restoration was achieved through this surgical approach.

    • Implications:

    • This surgical technique offers a novel approach for tendon transfers in radial nerve palsy.
    • It highlights the potential for utilizing compartmentalized forearm muscles for targeted functional restoration.
    • Further research into the innervation patterns of bipennate forearm muscles is warranted.