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