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Intrinsic Muscles of the Hand

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Description

Intrinsic muscles of the hand[1]
Marked wasting and weakness of the left intrinsic hand muscles (A) Case 1: marked wasting of the first dorsal interosseous muscle of the left hand (arrow). (B) Volar view showing inability to adduct the small finger of the left hand, resulting in the Wartenberg sign (vertical arrow). Note the wasting of the left thenar and hypothenar muscles (horizontal arrows). (C) Dorsal view demonstrating failure to adduct the left small finger, resulting in a positive Wartenberg sign (vertical arrow) and compensatory hyperextension at the metacarpophalangeal joint (oblique arrow). Note the wasting of the interosseous muscles on the left hand (arrowheads).[2]
Extrinsic tendons and intrinsic muscles of the hand. a Finger. b, c Palmar, dorsal views (left hand)[3]

Alternative Names

  • Intrinsic Hand Muscles
  • Intrinsic Musculature of the Hand
  • Hand Intrinsic Muscles
  • Short Muscles of the Hand

General

Thenar Muscles

Hypothenar Muscles

Inter-digital Muscles

Other Muscles

Clinical Significance

See Also

References

  1. ↑ image courtesy of /meddists.com/
  2. ↑ Shields, Lisa B., et al. "Clinical, Electrodiagnostic, Sonographic, and Radiological Findings of Hirayama Disease: A Report of Two Cases and a Review of the Literature." Cureus 16.11 (2024): e73914.
  3. ↑ Chang, Ivy, Kok-Meng Lee, and Yuyang Liu. "Design concept and kinematic analysis of a compliant anatomical palm mechanism for bio-inspired robotic hand design." International Journal of Intelligent Robotics and Applications 9.3 (2025): 1135-1153.
Created by:
John Kiel on 7 January 2025 11:31:42
Authors:
Last edited:
5 June 2026 13:03:39
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