Musculus pronator quadratus
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Distaler
Querschnitt durch den Unterarm auf Höhe des M. pronator quadratus
Nerve
entrapment syndromes of the upper limb: a pictorial review. 50-year-old male with flexor pollicis longus palsy. Axial PDFS (a) and PD (b) at the level of the distal forearm demonstrate atrophy and denervation oedema of the pronator quadratus (white arrows), supportive of anterior interosseous nerve (AIN) denervation. A discrete lesion or compressive cause has not been identified
Pronator quadratus muscle is the most distal muscle that makes up the deepest layer of the anterior compartment of the forearm. It is one of the extrinsic muscles of the hand.
Summary
- origin: anterior surface of distal quarter of ulnar shaft
- insertion: anterior surface of distal quarter of radial shaft
- arterial supply: anterior interosseous artery
- innervation: anterior interosseous nerve
- action: pronates forearm
Siehe auch:
und weiter:
Assoziationen und Differentialdiagnosen zu Musculus pronator quadratus: