Extension Block Pinning Vs Single Kirshner Wiring to Treat Bony Mallet Finger

Document Type : Original Article

Authors

Orthopedic Surgery, Faculty of Medicine for Boys, Al-Azhar University, Cairo, Egypt

10.21608/aimj.2025.446621

Abstract

Background: Bony Mallet Finger, also defined as Mallet Fracture, is a prevalent injury among athletes who participate in hand-intensive sports. Surgery is shown when conventional treatment is ineffective or in cases with a fracture involving more than 30% of the articular surface. Surgical options include Extension-Block Pinning and single Kirschner wire fixation, but there is limited comparative evidence on the effectiveness of these methods.
Aim: This investigation has been conducted to examine the findings of Extension-Block Pinning. EBP (versus Kirschner wire fixation (K-wire)) in treating Bony Mallet Finger (BMF).
Methods: In this prospective clinical trial, 30 patients with a diagnosis of BMF were involved. They have been separeted into two groups. Group one consisted of fifteen cases treated with EBP and Group two, consisting of fifteen cases with single K-wire fixation. The demographics studied include union time, clinical outcome, and complications.
Results: No significant distinction was observed among the two groups regarding demographic data, affected finger, cause of injury, fracture type, and time from injury to surgery. No significant distinction was found in either union time or clinical outcomes. In Group one, the outcomes were excellent in four cases, good in nine, fair in one, and poor in one. In Group two, there were five excellent, nine good, and one fair result, with no poor outcome. Early and late postoperative complications were similar in both groups.
Conclusion: Both the EBP and single K-wire fixations present relatively comparable outcomes of function and complication rate in the treatment of BMF. None of these two techniques came out to be superior to each other; hence, their usage is considered an effective surgical modality in managing BMF.

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