Abstract: Objective To explore and analysis the effectiveness of anatomical steel plate internal fixation system and reconstruction steel plate fixation in the treatment of mid clavicular fractures. Methods From January 2019 to October 2022, 88 cases of patients with mid clavicle fractures who were admitted to a certain hospital and underwent surgical treatment were selected as the research subjects. Accorded to the 1:1 random dice rolling principle, 88 patients were divided into the anatomical group of 44 cases and the reconstruction group of 44 cases. The reconstruction group were treated with reconstruction steel plate fixation, while the anatomical group were treated with anatomical steel plate internal fixation system. The treatment effects of both groups were recorded and observed. Results There were no significant difference in intraoperative bleeding, surgical time, and incision length compared between the two groups (P>0.05). The postoperative hospital stay, incision healing time, and fracture wound healing time in the anatomical group were significantly reduced compared to the reconstruction group (P<0.05). The incidence rates of subacromial impingement sign, implant loosening, shoulder arthritis, incision infection, venous thrombosis and other complications 3 months after surgery in the anatomical group were 4.55%, and 20.45% in the reconstruction group. Compared with the reconstruction group, the incidence of complications in the anatomical group were significantly lower (P<0.05). The excellent and good rate of fracture reduction quality in the anatomical group at 3 months after surgery were 97.73%, significantly higher than 84.09% in the reconstruction group (P<0.05). The overall effective rate of the anatomical group at 3 months after surgery were 95.45%, which were significantly improved by 81.82% compared to the reconstruction group (P<0.05). The Constant and Murley shoulder joint scores at 3 months after surgery in both groups were significantly higher than those on the 1st day before surgery (P<0.05), and the Constant and Murley shoulder joint scores at 3 months after surgery in the anatomical group were also significantly higher than those in the reconstruction group (P<0.05). Conclusion Compared to the reconstruction steel plate internal fixation system, The anatomical steel plate internal fixation system can promote the recovery and fracture healing of patients with mid clavicular fractures, reduce the incidence of complications, improve the quality of fracture reduction, and improve the overall efficacy and shoulder joint function of patients.

Key words: anatomical steel plate, middle clavicle fracture, fracture reduction, shoulder joint function, reconstruction steel plate, complications