Management of Nondisplaced Fifth Proximal Phalanx Fracture of the Foot
Treat this fracture conservatively with buddy taping to the fourth toe and a rigid-sole shoe, allowing immediate mobilization.
Conservative Management Approach
For stable, nondisplaced fractures of the fifth proximal phalanx, the evidence strongly supports non-operative treatment 1. This approach prioritizes functional recovery over anatomical perfection and has demonstrated excellent outcomes.
Specific Treatment Protocol
- Buddy taping: Tape the fifth toe to the fourth toe for support and stability
- Rigid-sole shoe: Use a stiff-soled shoe to limit joint movement and protect the fracture
- Immediate mobilization: Begin weight-bearing as tolerated immediately—no prolonged immobilization needed 2
- Duration: Continue buddy taping for approximately 3-4 weeks or until pain resolves
Evidence Supporting This Approach
A prospective study of 53 consecutive base fractures of the fifth proximal phalanx treated with buddy taping and immediate mobilization showed 2:
- High patient satisfaction
- Full flexion recovery in all but one patient
- No nonunions or delayed unions
- Only 3 cases of malrotation, none requiring surgery
- Minimal pain at follow-up
This functional approach avoids the decreased mobility that often follows internal fixation, even when anatomical reduction is achieved 2.
Key Clinical Considerations
Initial imaging: Standard anteroposterior and oblique radiographs of the foot are sufficient to confirm the fracture is truly nondisplaced 1.
No referral needed unless you encounter:
- Displaced fractures
- Fracture-dislocations
- Open fractures
- Circulatory compromise
- Significant soft tissue injury 1
Important Caveat
While rare, be aware that persistent pain and swelling beyond expected healing time (typically 4-6 weeks) may indicate occult infection, even in closed fractures 3. If delayed union occurs with persistent symptoms, consider empirical antibiotic therapy as a potential non-operative salvage approach, though this remains an emerging concept requiring further validation.
The bottom line: Buddy taping with immediate mobilization provides excellent functional outcomes without the complications associated with surgical fixation for nondisplaced fifth toe proximal phalanx fractures 1, 2.