Palmar Interossei
(Redirected from Palmar Interossei of the Hand)
Description
Name
- Palmar Interossei of the Hand
- Volar interossei
- Interossei volares
General
- Four muscles located on the palmar surface of the hand
- Some of the Intrinsic Muscles of the Hand
Origin
- Interosseous muscle I
- Ulnar surface of base of 1st metacarpal
- Interosseous muscle II
- Ulnar surface of entire length of 2nd metacarpal
- Interosseous muscle III
- Radial surface of 4th metacarpal
- Interosseous muscle IV
- Radial surface of 5th metacarpal
Insertion
- Interosseous muscle I
- Sesamoid bone on the ulnar aspect of the proximal phalanx of digit 1
- Extensor Expansion of the Hand
- Interosseous muscle II
- Ipsilateral extensor expansion of digit 2
- Interosseous muscle III
- Radial aspect of the base of the proximal phalanx of digit 4
- Extensor expansion
- Interosseous muscle IV
- Radial aspect of the base of the proximal phalanx of digit 5
- Extensor expansion
Actions
- Flexion and adduction of digits 2, 4, & 5 at the metacarpophalangeal joints
- Extension of digits 2, 4, & 5 at the interphalangeal joints
- Assist in flexion of the metacarpophalangeal joints
- Assist in extension of the proximal and distal interphalangeal joints
Vascular Supply
- Anterior and Posterior Digital Arteries
- Deep Palmar Arch
- Princeps Pollicis Artery
- Radialis Indicis Artery
- Palmar Metacarpal Arteries
- Proximal and Distal Perforating Arteries
- Common and Proper Palmar Arteries
Innervation
- Ulnar Nerve (Deep Branch, C8-T1)
Clinical Significance
See Also
References
- ↑ Vardasca, Ricardo Ângelo Rosa. The effect of work related mechanical stress on the peripheral temperature of the hand. University of South Wales (United Kingdom), 2010.
- ↑ Reichman, Eric F. "Compartment syndrome of the hand: a little thought about diagnosis." Case reports in emergency medicine 2016.1 (2016): 2907067.