Open accurate reduction for irreducible mallet fractures through a new pulp traction technique with primary tendon repair

Abstract

Sixteen patients with bony mallet fingers were treated by a new technique of open reduction through a T-shaped dorsal incision and oblique wire fixation via pulp traction with additional primary extensor repair. Surgical indications included fractures with intra-articular involvement over 1/3 of the articular surface, distal phalanx subluxation, and displacement greater than 3 mm irreducible by extension block pinning. The cases were analysed prospectively for a mean follow-up period of 12 months. The results were evaluated using Crawford's criteria. Eleven cases were evaluated as excellent, three cases as good, and two cases as fair. Complications included three cases with transient nail deformity, two cases with flexion limitation of 5° and 10°, and three cases with extension lag between 5°–10°. This new method of accurate reduction achieves good clinical outcomes, with comparatively less complications in mallet fractures irreducible to closed extension block reduction.

Key Words::

• Irreducible mallet fracture
• open reduction
• pulp traction
• primary tendon repair
• T-shaped incision