Snapshot An 18-year-old man presents to the emergency department with a swollen right hand. He punched a wall after having an argument. On physical exam, there is marked swelling over the ulnar side of his right hand with limited movement of the 5th metacarpophalangeal joint due to pain. Radiographs reveal a fracture of the 5th metacarpal neck of the right hand. Introduction Clinical definition a 5th metacarpal neck fracture Epidemiology Incidence accounts for ~10% of all hand fractures Prevalence more commonly seen in men Etiology Pathogenesis direct trauma to a closed fist against a hard surface (e.g., wall) results in fracture of the 5th metacarpal neck Presentation Symptoms pain on the dorsum of the 5th metacarpal portion of the hand Physical exam tenderness to palpation over the affected metacarpal neck as well as on the palmar surface of the hand ecchymosis could be seen in this area dorsal angulation of the fracture apex swelling of the dorsum of the hand Imaging Radiography indication initial imaging test to establish the diagnosis and assess the degree of fracture angulation certain clinicians may use an ultrasound initially modalities anteroposterior (AP) view lateral view oblique view Studies Making the diagnosis based on imaging studies and clinical presentation Differential Hand contusion distinguishing factor typically secondary to a direct blow to the hand when the fist is closed instead of trauma on physical exam, there will not be a step-off that would be seen in a fracture Metacarpal-phalangeal dislocation distinguishing factor mechanism of injury is usually secondary to a pulling or twisting of the phalanx between the articulation of the distal metacarpal and proximal phalanx there is a loss of congruity Treatment Non-operative splinting indication typically the initial method of immobilization or definitive treatment closed reduction indication performed in patients with pseudo-clawing (metacarpophalangeal joint hyperextension and proximal interphalangeal joint flexion) in cases of significant angulation of the 5th metacarpal fracture Operative surgical intervention indication performed in cases of open metacarpal neck fractures, neurovascular impairment, and fractures that cannot be managed nonoperatively Complications Joint stiffness (most common) Prognosis Typically patients have good long-term function with appropriate management