Flexor Digiti Minimi Exam

  • The hypothenar muscles are typical examined as a group.
  • The hypothenar muscles should first be observed for any sign of muscle atrophy.
  • The hypothenar muscle motions to evaluate are the abduction, flexion, and opposition of the little finger.
Diagrams & Photos
  • Location of the hypothenar muscles from a dorsal view.
    Location of the hypothenar muscles from a dorsal view.
  • Location of the hypothenar muscles from a palmar view.
    Location of the hypothenar muscles from a palmar view.
  • Testing hypothenar muscles (arrow) by resisting little finger abduction.
    Testing hypothenar muscles (arrow) by resisting little finger abduction.
  • Testing little finger opposition.
    Testing little finger opposition.
  • Note hypothenar atrophy (arrow) and weak abduction of the little finger.
    Note hypothenar atrophy (arrow) and weak abduction of the little finger.
Key Points
  • Patients with a positive Warenburg's sign have difficulty putting their hand in their pocket.
  • The EDM is a secondary little finger abductor.
Grading of Muscle Strength
Exam References
Anatomic Abbreviations
Hand Surgery Resource Exams & Signs Library