Functional Anatomy

Flexor Pollicis Brevis

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Pectoral Girdle Extension Test (Wright Test)

Functional Anatomy

Testing Tape Specification KT Method

Confirmation Testing

Origin

Superficial head: flexor retinaculum and
trapezium
Deep head: trapezoid and capitate bones

Insertion

Base of proximal phalanx of the thumb,
radial side; extensor expansion

Actions

Flexes the metacarpophalangeal (MCP)
and carpometacarpal (CMC) joints of the
thumb; assists in thumb opposition; may
extend the interphalangeal joint via the
extensor expansion

Nerve

Superficial head: median nerve
Deep head: ulnar nerve

0047-MF-XX Flexor Pollicis Brevis

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Functional Anatomy

2007-12-16

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