Study on sustentaculum tali screw placement for constant fragment of calcaneal fracture

• Published in: Zhongguo xiu fu chong jian wai ke za zhi 2018-05, Vol.32 (5), p.581-586
• Main Authors: Sun, Zhenhui, Zhao, Chengli, Chen, Yifei, Li, Nan, Zhang, Tao, Xin, Jingyi, Ma, Xinlong
• Format: Article
• Language: Chinese
• Subjects: Adolescent; Adult; Ankle Fractures - diagnosis; Ankle Fractures - surgery; Bone Screws; Calcaneus - diagnostic imaging; Calcaneus - injuries; Calcaneus - surgery; Female; Fracture Fixation, Internal - instrumentation; Fracture Fixation, Internal - methods; Fractures, Bone - surgery; Heel - diagnostic imaging; Humans; Male; Middle Aged; Recovery of Function; Subtalar Joint - injuries; Subtalar Joint - surgery; Talus - diagnostic imaging; Talus - injuries; Talus - surgery; Tomography, X-Ray Computed; Treatment Outcome; Young Adult
• ISSN: 1002-1892
• DOI: 10.7507/1002-1892.201801041

To investigate the anatomical characters of the sustentaculum tali (ST), accurate entry point and direction for the placement of ST screw from posterior subtalar joint facet to the constant fragment (CF) in calcaneal fractures. A total of 100 patients with calcaneal fractures performed ankle CT scans were enrolled between January 2016 and April 2016. According to the inclusion criteria, the clinical data of 33 patients were analyzed, including 18 males and 15 females, with a median age of 41.0 years (range, 18-60 years). There were 16 cases on left side and 17 cases on the right side. Three-dimensional (3D) calcaneal model was reconstructed by Mimics 17.0 software, and the ST anatomical references were measured, including the length of upper and lower edge, the length and height of the midline, the horizontal angle between the midline and foot plantar surface. The parameters of the optimal entry point position (P' point) and placement angle of the ST screw were determined. The length of ST screw was also meas