Flashcards in Wrist Deck (38):
strength of skeleton and lig/muscles
prox row of carpels left to right
distal row of carpel left to right
jnts of wrist (4)
-radial carpel: most lfex here
-mid carpel: most exten here (btwn 2 rows)
-radial ulnar: not in wrist
ligs of wrist
-transverse carpel lig (palmar side)
-interosseous lig: btwn carpels
-radial collateral lig: radius -> navicular
-ulnar collateral: ulna -> pisiform/triquetral
mechanism of navicular fx
what is important w/ naviuclar fx
-will not heal and bone will die if do not have blood supply to prox/distal portion
what is preisers disease
aceptic necrosis to prox protion of navicular bone due to fracture
signs/symptoms of presiers diease
-pain on radial devation
-pain in snuff box
mech of colles fx
fall on outstretch arm/ hyperextension
signs/symptoms of colles fx (4)
-distal end of radius moves distally
-finger/hand move limited
-difficult radial deviation/abduct
-posterior displacement of hand and wrist
mech of smiths fx
hyperflex = rare
what way does the radius displace in smiths fx
what borders the carpel tunnel
-post: carpel bones
-ant: transverse carpel lig
what does the carpel tunnel contain
-finger flexor tendons
mechnism of carpel tunnel (4)
-swelling of tendons/synovial sheaths
-dislocation of lunate into tunnel
waht does carpel tunnel result in (3)
-entrapment of median nerve=
-thenar eminence atrophy
what does phalans test test for?
how do you perform the phalans test?
-flex both wrists
-place back to back (hold)
-pain = pos = pressure on nerve
mechanism of dislocation of lunate
fall on outstretched hand/hyper extension
what does lunate dislocation result in (4)
-displace bone to palmar side
-lodge under capitate
-displace into carel tunnel = obstruct the structures in this
-ant blood supply gets cut off
what can lunate dislocation cause?
kienbocks disease = aceptic necrosis from DISLOCATION
what doe sthe murphys test test for?
how do you perform the murphy test?
pos = 3rd met head lines up with 2nd/4th met
mechanism of tunnel of guyan syndrome
-what does is it result in?
chronic over use
-entrapment of ulnar nerve (like carpel tunnel)
where is the tunnel of guyan
-btwn hook of hamate and pisiform
-contain ulnar nerve
mechanism of dequervians disease
overuse of thumb/wrist
two tendons involved in deque disease
-abductor pollicus longus
-extensor pollicus brevis
anatomical results of deque disease
-tendosynovitis (synovial inflammation)
-stenosing of tunnel (narrowing)
what does the finkelstein test test for?
how do you perform finkelstein test?
-make fist w/ thumb inside
-ulnar deviate (adduct)
-pos = pain
for navicular fx how long should you wait to re xray if there is no response?
how long should you immobilize for presiers disease
definition of aceptic and necrosis
-aceptic: w/o infection
-necrosis: death to bone/tissue surrounded by healthy tissue
where does a navicular fx occur?
waist of the navicular bone
where does a colles and smith fracture occur?
distal end of the radius
-btwn shaft and styloid process
what does the tinel sign test for?
tunnel of guyan syndrome