Perilunate Dislocation
Perilunate dislocations and fracture-dislocations are high-energy carpal injuries in which the lunate loses its normal articulation with the surrounding carpal bones — the capitate, scaphoid, triquetrum, and hamate are displaced dorsally while the lunate remains (at least initially) in the lunate fossa of the distal radius. They result from a fall onto an outstretched hand in hyperextension, ulnar deviation, and intercarpal supination, and are classified by the Mayfield progressive perilunar ins...
Practised by MCQ
10What is the most common mechanism of injury for perilunate dislocation?
mcqWhich of the following is the key radiological sign of perilunate dislocation?
mcqIn the Mayfield classification of perilunate instability, what characterizes Stage II?
mcqWhat is the most common neurological injury associated with perilunate dislocation?
mcqWhich surgical approach is primarily used to decompress the carpal tunnel in the treatment of perilunate dislo...
mcqWhat is the most common type of greater arc injury in perilunate fracture-dislocations?
mcqWhat is the significance of a delayed diagnosis in perilunate dislocation?
mcqWhat is the primary goal of the emergent closed reduction in perilunate dislocation?
mcqWhich of the following is NOT a characteristic feature of perilunate dislocation on a lateral radiograph?
mcqWhat happens to the scaphoid in a trans-scaphoid perilunate fracture-dislocation?