Abstract:

BACKGROUND: The research and development of the medical metal materials should be started from the existing problems, using the new technologies and new processes to improve the performance of bio-metallic materials, in order to meet the bone physiological conditions.
OBJECTIVE: To investigate the clinical effect of metal plate implantation for the treatment of traumatic fracture with emphasis on the biomechanical characteristics of bone metal plate.
METHODS: A computer-based retrieval of PubMed database, VIP database and Wanfang database from January 2001 to January 2012 was performed for papers regarding the treatment of bone injury and metal materials fixation with the key words of “bone, medical, metal, materials” in English and “fracture, screw, fixation, mechanics” in Chinese in the titles and abstracts. Finally, 24 articles were involved in the final analysis according to the inclusion criteria.
RESULTS AND CONCLUSION: With the development of the raw material industry progress and the renewal of orthopedic fixation devices, the orthopedic internal fixation plate and screws applied by vast majority of medical institutions have a good biocompatibility and stiffness. The domestic metal plate has the weak stress point at the junction of screw tail and screw rod, which may lead to the screw loosing, fracture at the junction of screw tail and screw rod, sliding-filament of the crew tail and slipping. It indicates that the plate quality, number of screws, forging process and clinical placement method may influence the biomechanics of internal fixation system.