Hand And Wrist Fractures Flashcards
What is mallets finger?
What is the typical mechanism?
What is the treatment?
Avulsion fracture
Mechanism: forced flexion of extended digit (eg catching a baseball)
Treatment: splint for 4 weeks or ORIF
What is gamekeepers/ skiers thumb?
How does it occur?
Due to chronic stretching of the ulnar collateral ligament- may rupture it. Occasionally a bone fragment may be avulsed on proximal phalynx.
Due to FOOSH with abducted thumb caught in pole strap
What is a bennets fracture (where is it usually found)?
Mechanism of injury?
Fracture dislocation of the base of the first metacarpal
Mechanism: traumatic force going down the length if the first metacarpal bone i.e punch.
What is a distal interphalangeal joint dislocation caused by?
What is it usually associated with?
-forced hyperextension or hyperflexion. Requires immediate reduction.
Can be associated with an avulsion fracture and the volar plate can be torn
Where is a boxers fracture usually found
Trained athlete so they fight with wrist in a neutral position. Result in a fracture of the 2nd and 3rd metacarpal
Where is a fighters fracture usually found
Wrist is flexed and results in a fracture of the 4th or 5th metacarpal
What is the common mechanism for a distal radial fracture
Fall on outstretched hand (FOOSH)
What is a colles fracture
Where the fracture fragment is displaced dorsally (looks like a dinner fork deformity). Normally associated with an avulsion fracture
What is a smiths fracture
Where the fracture fragment has a plamar displacement.
Occurs following impaction of a supinated forearm against a dorsi-flexed wrist
What is an undisplaced fracture and its common radiological sign
Where the fracture fragment has been impacted.
Loss of radial height is a common sign
Usual mechanism for a scaphoid fracture
FOOSH or can be a direct force
