ABSTRACT
Objective: To explore the curative effect of buttress plate and traditional internal fixation in the treatment of ankle fracture, so as to provide potential reference for the clinical treatment of this disease. Methods: This is a clinical comparative study. The subjects of this study were one hundred patients with ankle fracture treated in Mindong Hospital Affiliated to Fujian Medical University from January 2019 to December 2021. Enrolled patients were randomly divided into the control group and the experimental group. Patients in the control group were treated with traditional internal fixation, and those in the experimental group were provided with buttress plate. Patients were compared in several aspects such as the comprehensive quality of life assessment questionnaire (GQOLI-74), Baird-Jackson score and postoperative complications. Result: The experimental group showed improved Baird-Jackson score after treatment, significantly higher fracture healing rate than that of the control group three months after treatment. Besides, there was no significant difference in the complications between the two groups, with good prognosis after timely treatment. Conclusion: Internal fixation with buttress plate has obvious advantages in the treatment of ankle fractures, which can effectively improve the quality of life and promote the rapid healing of fractures. It is worthy of clinical promotion and application.
ABSTRACT
BACKGROUND Midfoot deformity and injury can affect the internal pressure distribution of the foot. This study aimed to use 3D finite element and biomechanical analyses of midfoot von Mises stress levels in flatfoot, clubfoot, and Lisfranc joint injury. MATERIAL AND METHODS Normal feet, flatfeet, clubfeet (30 individuals each), and Lisfranc injuries (50 individuals) were reconstructed by CT, and 3D finite element models were established by ABAQUS. Spring element was used to simulate the plantar fascia and ligaments and set hyperelastic coefficients in encapsulated bone and ligaments. The stance phase was simulated by applying 350 N on the top of the talus. The von Mises stress of the feet and ankle was visualized and analyzed. RESULTS The von Mises stress on healthy feet was higher in the lateral metatarsal and ankle bones than in the medial metatarsal bone. Among the flatfoot group, the stress on the metatarsals, talus, and navicular bones was significantly increased compared with that on healthy feet. Among patients with clubfeet, stress was mainly concentrated on the talus, and stress on the lateral metatarsal and navicular bones was significantly lower. The von Mises stress on the fractured bone was decreased, and the stress on the bone adjacent to the fractured bone was higher in Lisfranc injury. During bone dislocation alone or fracture accompanied by dislocation, the von Mises stress of the dislocated bone tended to be constant or increased. CONCLUSIONS Prediction of von Mises stress distribution may be used clinically to evaluate the effects of deformity and injury on changes in structure and internal pressure distribution on the midfoot.
