Intramedullary nailing confers an increased risk of medial migration compared to dynamic hip screw fixation in unstable intertrochanteric hip fractures
Injury Jan 22, 2021
Law GW, Wong YR, Gardner A, et al. - This study was undertaken to explore if intramedullary nailing is biomechanically predisposed to femoral neck element (FNE) medial migration compared to extramedullary fixation with sliding hip screws to account for the discrepancy in reported FNE medial migration rates. Researchers divided 12 fourth-generation synthetic femurs (Sawbones) with unstable intertrochanteric fractures into 2 groups (n=6 per group). They conducted fracture fixation applying the Proximal Femoral Nail Anti-rotation (PFNA, Synthes) (n=6) in the first group and the Dynamic Hip Screw (DHS, Synthes) (n=6) in the second group. This study’s findings revealed that intramedullary nailing of unstable intertrochanteric hip fractures is inherently predisposed to FNE medial migration making it more susceptible to consequent cut-out compared to fixation with the DHS.
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