Extension Pin Block vs Pin Orthosis-extension Block Pinning for Bonny Mallet Fractures

Mallet finger is a fracture of the distal phalanx involving the dorsal articular surface. It is important because it concerns the extensor tendon attachment site. The clinical manifestation of mallet finger formation is active extension loss at the DIP joint. If the injury is not treated and becomes chronic, the DIP passive extension is gradually lost and a hyperextension posture occurs in the PIP joint due to the compensatory swan neck deformity. Non-surgical methods have an important place in the treatment of mallet finger injuries. The indications for surgical treatment of mallet finger injuries are a matter of debate. Conditions that are widely accepted as definite surgical indications are open injury, individuals who cannot work with a splint, the ruptured dorsal part is large and includes more than 30% of the articular surface, and the presence of palmar subluxation in the DIP. Among the mallet finger surgical treatments, the extension pin block technique , bracing in extension, hook method are defined.

In this prospective study, we aimed to compare the extension pin block technique with the pin orthosis-extension block pinning. In comparison, the patients eligible for the study will be evaluated according to Crawford criteria for function evaluation, complications (infection, nail deformities, skin necrosis, DIP joint osteoarthritis), recovery time.