NPTE Hand deformities

Ape hand affects what nerve

Median nerve palsey

Ape hand: wasting of _____ eminence

thenar

Ape hand: pt unable to:

flex or oppose thumb

Ape hand: thumb falls in line w fingers bc of pull of

extensor muscles

Bishops hand affects what nerve

ulnar nerve palsey

Bishops hand: wasting of

hypothenar eminence, interossei, 2 medial lumbricals

Bishops hand: hyperextension of

MCP joint and flexion of IP joint

Claw hand lesion to

combination of median and ulnar nerve

Claw fingers results from

loss of intrinsic muscle action and overaction of extrinsic extensor muscles on the proximal phalanx of fingers

Claw fingers: MCP joints _____ and PIP/DIP joints ______

hyperextended, flexed

Wrist drop is _____ nerve palsey

radial

Dupuytren Contracture: contracture of

palmar fascia, fixed flexion deformity of MCP and PIP

Dupuytren contracture usually in:

ring or little finger

Dupuytren Contracture affects

men more than women

Mallet finger due to

rupture or avulsion of extensor tendon at distal phalanx of finger, distal phalanx rests in flexion

Boutonniere deformity joint position

MCP and DIP extension

PIP flexion

Boutonniere deformity results from

rupture of central tendinous slip of the extensor hood and is most common after trauma or in RA

Swan neck deformity joint position

PIP extension

MCP and DIP flexion

due ot contracture of intrinsic muscles or tearing of volar plate

common in RA

Trigger finger (tenovaginitis stenosans) occurs in what finger

3rd or 4th

Trigger finger associated with what condition

RA; tends to be worse in morning

DeQuervain’s tenosynovitis affects what muscle

Inflammation of EPB and APL at 1st dorsal compartments

Dequervains common with what condition

pregnancy

Carpal tunnel syndrome affects what nerve

median

carpal tunnel common w what conditions

pregnancy, RA