Effects of Variations in Dwyer Osteotomy Determined by 3D-Printed Patient-Specific Modeling:

Foot & Ankle Orthopaedics

Kent T.Weinheimer¹ 

关键词: 3D-printing;    Dwyer;    calcaneal osteotomy;   

DOI  :  10.1177/2473011416S00176

学科分类：医学（综合）

来源: Sage Journals

【 摘 要 】

Category:HindfootIntroduction/Purpose:Dwyer osteotomy is commonly used in surgical correction of heel varus deformity but few studies have reported on the size of wedge removed, and none have reported on location of the osteotomy or angle at which the osteotomy should be made. The purpose of this study is to determine these optimal parameters for surgical correction in patients undergoing Dwyer osteotomy using pre-operative imaging analysis with 3D-printed modeling.Methods:Patients with hindfoot varus deformity who had undergone Dwyer calcaneal osteotomy in a single institution were evaluated. Pre-operative CT scans were used to create a 3D-printed model of the ankle and foot sparing the calcaneus. Multiple identical calcaneus models were 3-D printed to perform different variations of the osteotomy. Osteotomies were done at 10, 15 and 20 mm distal to the posterior calcaneal tuberosity at 3 different angles of 30, 45, and 60 degrees of obliquity and taking out 5 or 10 mm of bony wedge giving us 18 osteotom...

【 授权许可】

CC BY