Musculocutaneous nerve entrapment in the upper arm

Int Orthop. 1993;17(4):232-4. doi: 10.1007/BF00194185.


Wasting and weakness of the biceps and brachialis muscles can occur when the musculocutaneous nerve is compressed as it passes through the coracobrachialis muscle; there may also be impairment of sensation on the lateral aspect of the forearm. In our patient, symptoms appeared after strenuous exercise which included more than 500 press-ups each day. Electromyography and telethermic examination confirmed the diagnosis. He was advised to stop his strenuous exercises and within 3 months muscle strength and sensation had returned.

Publication types

  • Case Reports

MeSH terms

  • Adult
  • Arm / innervation*
  • Electromyography
  • Evoked Potentials, Somatosensory
  • Exercise*
  • Humans
  • Male
  • Muscular Atrophy / etiology*
  • Nerve Compression Syndromes / complications*
  • Nerve Compression Syndromes / diagnosis