[Treatment of complex acetabular fractures with improved Stoppa combined with Kocher-Langenbeck approach assisted by 3D printing technology].

Objective: To explore the clinical effect of the modified Stoppa combined with Kocher-Langenbeck(K-L) approach and 3D printing technology in the treatment of complex acetabular fractures.

Methods: The surgical methods of 70 patients with complex acetabular fractures admitted from April 2013 to July 2019 were retrospectively analyzed. Among them, 25 cases were operated with 3D printing technology(3D printing group) and 45 cases were operated with conventional operation(conventional operation group). The operation time, intraoperative blood loss, intraoperative fluoroscopy times, complications and functional recovery of the hip joint of two groups were recorded.

Results: There were statistically significant differences between two groups in terms of operation time, intraoperative bleeding volume and intraoperative fluoroscopy times(<0.01). All patients were followed up for (15.8±3.5) months, and all patients achieved bony healing. There was no significant difference in the results of Matta reduction between two groups(>0.05). There was no significant difference in Harris score at 6 months after operation between two groups(>0.05).

Conclusion: With the aid of 3D printing technology, the improved Stoppa combined with K-L approach is used to treat complex acetabular fractures. It has certain advantages in helping clinicians to formulate a reasonable operation plan before operation, avoid unnecessary operation and trauma during operation, shorten the operation time and reduce the amount of bleeding during operation. It can improve the safety during the perioperative period, facilitate the accurate reduction of fractures during operation and facilitate the recovery of patients.