Comparing Fixation Stability of Rotationally Unstable Proximal Phalanx Fractures: A Biomechanical Study.

ABSTRACT:

Background

Proximal phalanx fractures are common upper extremity injuries; surgical fixation is often recommended for unstable patterns. Intramedullary screw (IMS) fixation has emerged as a minimally invasive technique with potential benefits of earlier motion and reduction of soft tissue disruption compared with traditional methods. However, its resistance to fracture displacement in rotationally unstable fracture patterns requires further investigation. This study compares the biomechanical stability of single IMS, dual crossing IMS, and 2 interfragmentary cortical screw constructs in short oblique proximal phalanx fractures.

Methods

Eleven cadaveric hands were used in the study. Sixty-degree oblique extra-articular proximal phalanx fractures were created in middle, index,

SUBMITTER: Zeng F 

PROVIDER: S-EPMC12923371 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature