Finger Deformities
Wrist & Hand Deformities
Wrist Zones
Fx Types
100

Mallet Finger key SS is inability to...

EXT DIP


100

Drop Wrist Deformity is...

radial nerve injury causing weakness or paralysis of wrist and finger EXT causing wrist drop form


100

anatomy and clinical significance of Zone 1

EXT pollicis brevis, ABD pollicis longus, anatomical snuff box

DeQuervain's Disease and scaphoid Fx occur here

100

Boxer's Fx (Description & Special Test)

Fx of the 5th metacarpal - will have (+) Murphy's Sign

200

Trigger Finger is...

tenosynovitis of flexor tendons of hand and fingers causing tendon to get "stuck" in nodule


200

Claw Hand is...

hyperextension of the MCP, flexion of the PIP and DIP caused by injury to ULNAR N.


200

anatomy and clinical significance of zone 2

Tunnel 2: EXT carpi radialis longus & brevis

Tunnel 3: EXT pollicis longus

Tunnel 4: EXT digitorum, EXT indicis

EPL may rupture w/colle's Fx, EXT Indicis site of ganglion cyst

200

Colle's Fx (description & MOI)

dorsal displacement Fx of the radius and ulna in relation to the proximal shaft

MOI = FOOSH


300

Jersey Finger is...

ruptured flexor digitorum longus (FDL) tendon causing inability to flex DIP


300

Ape Hand Deformity is...

median nerve dysfunction causing thumb to be aligned with fingers (weak opposition)


300

anatomy and clinical significance of Zone 3

Tunnel 5: EXT digiti minimi

Tunnel 6: EXT carpi ulnaris

"Hex Sign" (EDM), ECU - tendonitis

300

Smith's Fx (description & MOI)

volar displacement Fx of the distal radius and ulna to the proximal shaft

MOI = fall onto BACK of hand


400

Swan Neck Deformity is...

hyperextension of PIP, flexion of DIP



400

Bishop's Hand Deformity is...

injury to high median nerve causing partial flexion of digits 4-5, and EXT of digits 1-3 during active flexion

400

anatomy and clinical significance of Zone 4

Flexor carpi ulnaris, tunnel of guyon, pisiform, hook of hamate

TOG - site of Ulnar N compression, common in cycling

Hook of Hamate Fx - more common batting

Ulnar N. runs btwn hook of hamate and pisiform

400

Bennett's Fx (description & MOI)

Fx to base of 1st MC

MOI = striking an object with a closed fist


500

Boutonniere Deformity is...

extension of MCP, flexion of PIP, hyperextension of DIP



500

not really a deformity LOL, but Gamekeeper's Thumb is...

sprain to the UCL of the MCP joint of the thumb

500

anatomy and clinical significance of zone 5

palmaris longus and carpal tunnel (defined by pisiform, scaphoid tubercle, hook of hamate, trapezium tubercle)

PL tendon used as graft in tommy john surgery

carpal tunnel houses median N - compressed in CTS

500

Barton's Fx

intra-articular Fx of the distal radius w/Dx of the radiocarpal joint (Fx goes through the AC of the distal radius)


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