Abstract:

BACKGROUND: PHILOS locking compression plate and locking proximal humerus plate (LPHP) are plates of new generation that are designed by international society of internal fixation according to the concept of biological osteosynthesis and local anatomic features of the humerus and biomechanical properties.
OBJECTIVE: To compare the clinical effect of open reduction and internal fixation for the fractures of proximal humerus with PHILOS and LPHP blade plate.
METHODS: A total of 49 cases of fractures of proximal humerus were randomly divided into two groups (PHILOS, n=24, 3 parts in 13 cases and 4 parts in 11 cases; LPHP, n=25, 3 parts in 15 cases and 4 parts in 10 cases) according to different implanted plates. All the cases were operated via deltoid-pectoral approach, and Neer numerical rating system was employed to evaluated postoperative function of the involved shoulders.
RESULTS AND CONCLUSION: The 22 cases in PHILOS group and 23 cases in LPHP group were followed up for a mean time of (15.6±4.8) months. A total of 16 cases in PHILOS group and 18 cases in LPHP group obtained a bone union recover within 3 months and 21 cases in PHILOS group and 21 cases in LPHP group within 6 months, and all within 1 year. According to the Neer numerical rating system, 9 patients in PHILOS group showed a excellent result, 11 satisfactory, with an excellent and good rate of 90.9％; 10 patients in LPHP group showed a excellent result, and 11 satisfactory with an excellent and good rate of 91.3％. The treatment for fractures of proximal humerus with PHILOS and LPHP blade plate, which has been approved to be an excellent internal fixation, is able to get a good clinical result, such as stable fixation, few complications and high satisfactory rate. If combined with diaphyseal humerus, PHILOS blade plate is better.