Match the following acute upper extremity orthopedic injuries with their most characteristic physical examination findings and anatomical disruptions.
- Scaphoid fractureTenderness in the depression between the extensor pollicis longus and extensor pollicis brevis tendons
- Lunate dislocationVolar wrist swelling with paresthesias in the thumb, index, and middle fingers
- Monteggia fracture-dislocationProximal forearm deformity with a palpably dislocated radiocapitellar joint
- Galeazzi fracture-dislocationDistal forearm deformity with a prominent, unstable ulnar head
Cevap
Scaphoid fracture matches with anatomic snuffbox tenderness. Lunate dislocation matches with volar swelling and median nerve paresthesias. Monteggia fracture-dislocation matches with proximal forearm deformity and radiocapitellar dislocation. Galeazzi fracture-dislocation matches with distal forearm deformity and prominent ulnar head.
Each named injury corresponds to a distinct anatomical disruption. The scaphoid sits at the base of the anatomic snuffbox, making this the primary site of tenderness when fractured. The lunate articulates directly above the carpal tunnel; its volar dislocation inherently compromises the median nerve space. Eponymous forearm fractures are defined by their specific bone and joint involvement: Monteggia affects the proximal ulna and radial head, while Galeazzi affects the distal radius and distal radioulnar joint.
Adım Adım Çözüm
Anahtar Kavram
Upper extremity orthopedic injuries have highly specific anatomical presentations, such as the MUGR pattern for forearm fracture-dislocations and distinct focal tenderness or nerve compression for carpal injuries.
Tahmini Süre:1m 0s