Accessory muscles of the forearm, wrist and hand

Dr Joachim Feger et al.

Accessory muscles of the forearm, wrist and hand are normal muscular usually asymptomatic anatomical variants that might be encountered on imaging studies and confused with pathologic conditions.

The following accessory muscles around the forearm wrist and hand have been described 1-6:

Accessory muscles look like other muscles in imaging studies.

The radiological report should include a description of the following features:

  • accessory muscle with location
  • nerve compression syndromes

Accessory muscles might mimic pathological conditions such as tumors or mass lesions. 

Accessory muscles of the forearm, wrist, and hand have been implicated in the following clinical conditions 1-5:

  • nerve compression syndromes
  • wrist pain

Article information

rID: 91056
Section: Anatomy
Tag: cases
Synonyms or Alternate Spellings:
  • Accessory muscle of the wrist
  • Accessory muscle of the forearm
  • Accessory muscle of the hand and wrist

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