lecture 13: wrist and hand Flashcards
what are some examples of how hand and wrist play an intergral role in ADL
- Gripping
- Fine motor control
- End of kinetic chain
what is the main joint of the hand/wrist
radiocarpal joint
what are the most commonly injured carpal bone
scaphoid and lunar
what does the dorsal radiocarpal lg resist
flexion
what does the palmar radiocarpal ligament resist
hyperextension
where does the ulnar nerve pass through
pisiform and hook iof the hammate
what does the median nerve pass
carpal tunnel
where does the radial nerve pass
posterio half of the dorsal aspect
what is the common MOI of colles fracture
foosh
what is the position of the radius in a colles fracture
distal radius is driven dorsally
who is the vulnerable population for colles fracture
vulnerable children/adolescence
whtat are the SS of colles fracture
• S/S- pain with movement,
decreased grip strength, swelling,
deformity, sharp pain, feel of
cracking sensation
what is the treatment for colles fracture
splint it
if there is obvious deformity in a colles fracture do you do a tap test
no
what is considered a reverse colles frcature
smoth fracture
what is the positionn of the radius in a smith fractuere/reverse colles
the radius gets driven palmarly
what is the MOI for smith fracture/reverse colles
falling with wrist flexed
ex: runnning back lands in flexed postion
what are the SS of Smith fracute
S/S: pain with movement, decrease grip strength, swelling, deformity,
sharp pain, cracking sensation
smith fracture is a reverse BLANK
reverse colles fracture
true or false: manteggia fracture is considered a fracture dislocattion
true
explain why monteggia frcature is considered a fracture dislocation
Fracture of proximal 3rd of ulna
• Dislocation of radial head
what is the MOI for monteggia fracture
FOOSh
what is the big danger of a menteggia fracture
might lead to a compartment synfrome (because of the hemmoraging/swelling which compresses the structures)
what are the SS of monteggia fracture
Rapid swelling, protective spasm, discoloration, unwillingness to
move
what is the treatment for monteggia fracture
splint and check PMSX
if you fracture the ulna what nerve is affected
ulnar
if you fracture the radius, what nerve is affect
radial
a fracture of the ulna and dislocation of the radius togethere is what type of fracture
monteggia
true or false: galeazzi fracture is not considered a fracture discloation
false, it is
explain why galeazzi fracture is considered a fracture dislocation
Fracture of distal 1/3 of the radius
• Dislocation of the distal ulna
fracutre of the radius and dislocation of the ulna is what fracture
galeazzi fracture
what is the MOI for galeazzi
FOOSH `
what is the SS of galaezzi fracture
Rapid swelling, protective spasm, unwilling to move, discoloration
wht is the most common mass or lump in the hand./wrist
ganglion cyst
what is a ganglion cyst
non cancerous anf fluid filled cyst
what do ganglion cysts arrise from
the ligaments
- joint lining
- tendon sheaths when irritated or inflamed (friction)
true or false: ganglion cysts are permanent
false, thy can disapear or change quickly
what is the treatment if the ganglion is nonn painful
no treatment
what is the treatment if the ganglion is painful
surgical removal
what percentage of carpal fractures involve the scapohid
70%
70% of carpal fractures involve what bone
scaphoid
what do 70% of carpal fractures involve scapohid
because of its roll in bonny block limiting wrist extensionn
what is the MOI for scaphoid
FOOSH
what carpal bonen has the largest articulation with the wrist
scaphoid
true or false: scaphoid bones heal very good
false, usually dont because there is not good supply
what part of the scaphoid heals better and why
the distal part ebcaue there is more blood supply
there is high incidence of what inn the scaphoid fracuetre
High incidence of non union
fractures and malunion
fractures compromise blood supply to the proximal or distal end of the scapohid
proximal end
scaphoid gets blood supply from what artery
radial
true or false: scapohid does not often show up on the 1st xray
true
a fractured scaphoid can lead to instability of what
proximal row
unresolved fractures or impaired circulation of the scaphoid can lead to what disease
preiser disease
what is preisers disease
avascular necrossi of the scaphoid
what are the SS of scaphoid fractures
Point tenderness in anatomical snuffbox
• Swelling
• Pain with thumb extension and abduction and wrist extension and radial
deviation
• Decrease grip strength
hook of the hammate fracture is common in what sprots
where gripping and vibration occur (batting and cycling)
what are the SS of hook of the hammate fracture
Pt tender on palmar aspect
• Potentially ulnar nerve
involvement
- Pain with wrist flexion
- Pain with opposition
- Pain with gripping
what nerve runs near the hook of the hammate
ulnar nerve