Definition of a Safe Zone for Screw Fixation of Posterior Talar Process Fracture by Three-dimensional Technology:

Foot & Ankle Orthopaedics

HaijiaoMao¹ 

关键词: Percutaneous fixation;    Safe zone;    Screw;    posterior talar process;   

DOI  :  10.1177/2473011418S00335

学科分类：医学（综合）

来源: Sage Journals

【 摘 要 】

Category:HindfootIntroduction/Purpose:Percutaneous screw fixation can provide stable fixation with a minimally invasive surgical technique for posterior talar process fracture . This surgical technique is limited procedure due to the complex anatomy of the posterior talar process and the varying narrow safe bony zone. The purpose of this study was to investigate the optimal posterior screw placement and the geometry of safe zones for screw insertion in the posterior talar process by analyzing with three-dimensional technology.Methods:One hundred adult who had feet CT scans were evaluated. CT data were imported into Mimics 18.01 software for three -dimensional reconstruction; Two 3.0mm-diameter screws were simulated from the posterior to anterior position for posterior talar process. The morphology parameters of posterior talar process was also quantitatively measured. The incidences of safe at different angles were investigated in order to determine optimal angle for screw direction. The safe zone and the...

【 授权许可】

CC BY