Treatment of Intra-articular Fracture at Base of Fifth Metacarpal with Minimal Displacement

Initial Management

Removable splinting for 3-4 weeks with early active finger motion exercises is the appropriate treatment approach for minimally displaced intra-articular fractures at the base of the fifth metacarpal, as recommended by the American Academy of Orthopaedic Surgeons 1, 2
The American Academy of Orthopaedic Surgeons recommends removable splinting as the treatment of choice for minimally displaced intra-articular fractures 3, 2
Immobilization should be maintained for 3-4 weeks 2
Active finger motion exercises should be started immediately after diagnosis to prevent stiffness, which is the most functionally disabling complication 1, 2

Surgical treatment becomes mandatory if displacement is greater than 3mm 1, 2
The American College of Surgeons recommends surgical intervention if dorsal tilt is greater than 10 degrees 1, 2
Any loss of joint congruity on radiographs requires surgical treatment 1
Displacement greater than 3mm, dorsal tilt greater than 10 degrees, or any loss of joint congruity on radiographs are indications for surgical intervention, as recommended by the American Academy of Orthopaedic Surgeons 1, 2

The American Academy of Orthopaedic Surgeons recommends conservative management with removable splinting for truly minimally displaced fractures, as it avoids surgical risks while allowing early motion 3, 2
Inadequate reduction of intra-articular fractures at the fifth metacarpal base leads to pain, functional disability, and early osteoarthritic changes, according to the American Academy of Orthopaedic Surgeons 3, 2

Radiographs should be obtained at 3 weeks post-injury to assess for delayed displacement that would require surgical intervention, as recommended by the American College of Radiology 1, 2
Repeat imaging at the time of immobilization removal is necessary to confirm adequate healing 1, 2
Monitor for immobilization-related complications, which occur in approximately 14.7% of cases, according to the American Academy of Orthopaedic Surgeons 2, 4

The American Academy of Orthopaedic Surgeons recommends not relying on closed reduction and casting for displaced fractures, as studies demonstrate this approach fails to maintain reduction in fifth metacarpal base fractures 1
Do not underestimate the degree of displacement, as even seemingly minor intra-articular step-offs can lead to post-traumatic arthritis, according to the American College of Surgeons 1
Prolonged immobilization leads to joint stiffness, the most disabling complication, and should be avoided, as recommended by the American Academy of Orthopaedic Surgeons 1, 2
The 3-week radiographic follow-up should not be skipped, as delayed displacement requiring surgical intervention can be missed, according to the American College of Radiology 1, 2