In boxer fracture management, which treatment is appropriate for angulation less than 40 degrees without extensor lag?

In boxer fracture management, which treatment is appropriate for angulation less than 40 degrees without extensor lag?

• A. Open reduction and internal fixation
• B. Ulnar gutter splint
• C. Immediate casting
• D. Surgical referral

Answer: (B)

In a boxer fracture, the key idea is that a fifth metacarpal neck fracture can be managed nonoperatively when it is stable and only mildly angulated. If the angulation is less than about 40 degrees and there is no extensor lag, the fracture is considered stable enough to heal with immobilization. An ulnar gutter splint provides the right amount of protection: it immobilizes the ring and little fingers, keeps the MCP joints flexed to help maintain alignment, and protects the extensor tendon while the bone knits. The absence of extensor lag indicates the extensor mechanism is intact, so there’s no tendon injury driving the need for surgery. This approach avoids unnecessary surgical intervention and is preferred over aggressive procedures unless the fracture is more angulated, displaced, intra-articular, or unstable, or if there is failure of conservative treatment. Immobilization is typically continued for a few weeks, followed by gradual return of motion as healing allows.

In a boxer fracture, the key idea is that a fifth metacarpal neck fracture can be managed nonoperatively when it is stable and only mildly angulated. If the angulation is less than about 40 degrees and there is no extensor lag, the fracture is considered stable enough to heal with immobilization. An ulnar gutter splint provides the right amount of protection: it immobilizes the ring and little fingers, keeps the MCP joints flexed to help maintain alignment, and protects the extensor tendon while the bone knits. The absence of extensor lag indicates the extensor mechanism is intact, so there’s no tendon injury driving the need for surgery. This approach avoids unnecessary surgical intervention and is preferred over aggressive procedures unless the fracture is more angulated, displaced, intra-articular, or unstable, or if there is failure of conservative treatment. Immobilization is typically continued for a few weeks, followed by gradual return of motion as healing allows.