Wrist & Hand Examination Flashcards
Swan neck (reasons why it happens and description)
- RA, trauma
- PIP flexion, DIP hyperextension
boutonniere deformity (reasons why it happens and description)
- RA, trauma
- PIP flexion
claw-hand (reasons why it happens and description)
- ulnar nerve palsy (usually)
- “clawing in” of 4th and 5th digits
trigger finger (reasons why it happens and description)
- RA, diabetes
- usually 3rd and 4th digits
- finger will flex but must be passively extended
ape hand (reasons why it happens and description)
- median nerve palsy
- wasting thenar & inability to oppose thumb
drop wrist (reasons why it happens and description)
- radial nerve palsy
- cannot extend wrist
Z deformity of thumb (reasons why it happens and description)
- heredity, arthritis
- flexed MCP, (hyper)extended IP
Dupuytren’s contracture (reasons why it happens and description)
- heredity, metabolic changes
- typically 4th and 5th digits
- a condition in which there is fixed forward curvature of one or more fingers, caused by the development of a fibrous connection between the finger tendons and the skin of the palm
mallet finger (reasons why it happens and description)
- traumatic disruption of terminal tendon from DIP
- ruptured extensor tendon of distal phalanx
- cannot get DIP ext
volkmann’s ischemic contracture (reasons why it happens and description)
- neurovascular trauma, fracture
- hook-like contracture of flexor muscles
ulnar drift (reasons why it happens and description)
- RA
- hand drifts towards ulnar side
Heberden nodes (reasons why it happens and description)
- OA
- palpable bony nodules on lateral and dorsal surfaces located on distal phalanx, near DIP
- may or may not be unilateral
Bouchard’s nodes (reasons why it happens and description)
- OA
- located around PIP
digits crossing over with composite flexion (reasons why it happens and description)
- fracture, mal-rotation
- instead of fingers being parallel to each other they cross over
arches of hand
- longitudinal (down center of palm)
- transverse over metacarpal heads
- transverse over carpals
What is every IP capsule reinforced with?
-collateral ligaments
extensor hood mechanism
- extensor digitorum communis tendon and it’s connective tissue expansion
- fibers form the tendons of the dorsal and palmar interossei & lumbricals
- isolated contraction of the extensor digitorum (an intrinsic extensor) produces clawing of the fingers. the EDC with the interossei/lumbricals work together for PIP & DIP extension
differential diagnosis for palpable tenderness of radial area (options of palpations at this location)
- snuffbox tenderness/edema - consider scaphoid fracture
- radial styloid tenderness - consider fracture, contusion, osteoarthritis
- 1st dorsal compartment tenderness, provoked Finkelstein test - consider de Quervain’s syndrome
- pain radiating into dorsal web space w/ distal radial percussion - consider superficial sensory neuritis
- 1st CMC pain, provoked by axial loading & rotation - consider arthritis
differential diagnosis for palpable tenderness of ulnar area (options of palpations at this location)
- ulnar styloid tenderness - consider fracture or nonunion
- distal radioulnar joint pain/crepitus/prominence, provoked by compression and/or rotation - consider instability, subluxation
- pain distal to ulna - consider ulna-menisci-triquetral shear
- extensor carpi ulnaris tenderness, snapping with supination - consider tendon subluxation
With patient making a fist, where should the fingers point?
-fingers should point to scaphoid & the 3rd MCP should be most prominent
Passive accessory motion testing of wrist (types of glides)
- distraction
- posterior
- anterior
- radial
- ulnar
passive accessory motion testing of midcarpals (types of glides)
- distraction
- posterior
- anterior
passive accessory motion testing of carpals (types of glides)
- pisiform
- lunate
- capitate
passive accessory motion testing of trapeze-metacarpal (types of glides)
- distraction
- posterior
- anterior
- radial
- ulnar