Effects of foot posture on fifth metatarsal fracture healing: a finite element study.

摘要: The goal of this study was to evaluate the effects maintaining different foot postures during healing proximal fifth metatarsal fractures for each 3 common fracture types. A 3-dimensional (3D) finite element model a human developed and loading situations were evaluated, including following: (1) normal weightbearing, (2) standing with affected in dorsiflexion at ankle, (3) eversion. Three stages fracture-healing process studied, including: stage 1, wherein material interposed between fractured edges initial connective tissue; 2, tissue had been replaced by soft callus; 3, callus mature bone. Thus, 30 3D models analyzed that took into account type, posture, stage. Different did not statistically significantly affect peak-developed strains on site. When everted or dorsiflexed, it slightly higher strain within than when weightbearing position. In Jones fractures, eversion caused further torsional we believe position should be avoided immobilization treatment base fractures. Tuberosity avulsion seem biomechanically stable as compared shaft Our understanding literature experience indicate current clinical observations standard therapeutic options are accordance results observed investigation, exception