Department of Orthopedics the 4th People''s Hospital of Shenyang Shenyang 110031 Liaoning Province China;
Department of Orthopedics the First Hospital of China Medical University Shenyang 110000 Liaoning Province China;
Bridge combined internal fixation; Locking plate; old age; Mid-clavicular displacement fracture; Internal fixation; Fracture healing; shoulder function; Bone turnover;