General / Anatomy Flashcards

1
Q

What are the flexor zones of injury of the FINGERS?

A

Zone 1: to mid middle phalanx (A5, C3, FDP)

Zone 2: to MC neck (all other pulleys, bifurcation of FDS+FDP, TRL volar plates, ORL origin)

Zone 3: to base of MC (lumbricals)

Zone 4: to distal wrist crease (flexor retinaculum, FCR + FCU insertion, FDS, FDP, median nerve

Zone 5: below distal wrist crease (

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2
Q

What are the flexor zones of injury of the THUMB?

A

T Zone 1: to mid proximal phalanx (FPL insertion)

T Zone 2: over prox phlanax to MC neck

T Zone 3: over MC

T Zone 4: (thenar group)

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3
Q

What are the attachments of the pulleys?

A

A2 & A4: osseous bony attachment
(shorten 25% with flexion)

A1, A3, A5: insert into the volar plate they arise
(shorten 50% with flexion)

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