Nerve Surgery & Tendon Transfers Procedures

Median Nerve Forearm Decompression

The median nerve is decompressed in the forearm. A Z-plasty lengthening is performed on the pronator teres tendon. In addition, the tendon of the deep head of the pronator teres is transected and the flexor digitorum superficialis tendinous arch is released.






A lazy-S incision is made over the proximal forearm.


  1. Dang AC, Rodner CM. Unusual compression neuropathies of the forearm, part II: median nerve. J Hand Surg Am. 2009 Dec;34(10):1915-20. PMID: 19969200.
  2. Colbert SH, Mackinnon SE. Nerve compressions in the upper extremity. Mo Med. 2008 Nov-Dec;105(6):527-35. Review. PMID: 19052017.
  3. Lee MJ, LaStayo PC. Pronator syndrome and other nerve compressions that mimic carpal tunnel syndrome. J Orthop Sports Phys Ther. 2004 Oct;34(10):601-9. Review. PMID: 15552706.
  4. Mackinnon SE. Pathophysiology of nerve compression. Hand Clin. 2002 May;18(2):231-41. Review. PMID: 12371026.

Disclosure: No authors have a financial interest in any of the products, devices, or drugs mentioned in this production or publication.


  1. Hi Susan
    I’m an upper limb surgeon in Yorkshire ,United Kingdom , and have a case of pronator syndrome on my operating list next week. Your video is extremely useful in preparing for this op.

    Best wishes

    Bernd Ketzer, Wakefield , West Yorkshire

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