Biomechanical analysis of combining distal radius plate with transfixation screw for Sanders III calcaneal fracture(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2021年第4期
- Page:
- 505-510
- Research Field:
- 生物材料与力学
- Publishing date:
Info
- Title:
- Biomechanical analysis of combining distal radius plate with transfixation screw for Sanders III calcaneal fracture
- Author(s):
- ZHANG Haowei1; L?Lin1; 2; PEI Xiaoti1; HUANG Pengjie1; SUN Wanju2; NI Ming1; 2; ZHU Xiaozhong3
- 1. School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China 2. Department of Orthopaedics, Pudong New Area Peoples Hospital, Shanghai University of Medicine and Health Sciences, Shanghai 201299, China 3. Department of Orthopaedics, Tongji Hospital Affiliated to Tongji University, Shanghai 200136, China
- Keywords:
- Keywords: calcaneal fracture two-point fixation transfixation screw weight-bearing walking rehabilitation training
- PACS:
- R318
- DOI:
- DOI:10.3969/j.issn.1005-202X.2021.04.020
- Abstract:
- Abstract: A combination of distal radius plate (two-point fixation mechanism) and transfixation screw for the treatment of Sanders III calcaneal fractures is proposed, and its biomechanical stability is evaluated. Based on the skeleton-muscle finite element model of the lower extremity, a model of Sanders III calcaneal fracture is established, and then fixed by distal radius plate (two-point fixation mechanism) combined with transfixation screw. The biomechanical performances of the fracture model during static standing and 3 gait phases (heel-strike, mid-stance and push-off) are analyzed in terms of stress distribution and fracture displacement. The stress of the calcaneus under load condition concentrates on the junction of fracture end, calcaneus and Achilles tendon, with a peak value of 96.92 MPa, while the stress of the internal implant concentrates on the position where plate screw is in contact with sustentaculum tail and calcaneal tubercle, with a peak value of 883.20 MPa. The posterior articular displacement, Bohlers Angle and Gissanes Angle all maintain at a good condition. The combination of distal radius plate and transfixation screw for the treatment of calcaneal fracture has the advantages of sufficient biomechanical stability, minimal invasion and simple operation, and it can further facilitate early postoperative rehabilitation training. The proposed approach can serve as a new recommended fixation modality for the treatment of Sanders III calcaneal fracture, worthy of clinical application.
Last Update: 2021-04-29