Tag: periacetabular

Computer-assisted surgery prevents complications during peri-acetabular osteotomy

periacetabular-osteotomy-preoperative

Computer-assisted surgery prevents complications during peri-acetabular osteotomy, Hayashi, S., Hashimoto, S., Matsumoto, T. et al. International Orthopaedics (SICOT) (2018).

Abstract:

Purpose
The aim of study is to evaluate the accuracy of a navigation system during curved peri-acetabular osteotomy (CPO).

Methods
Forty-seven patients (53 hips) with hip dysplasia were enrolled and underwent CPO with or without navigation during surgery. Clinical and radiographical evaluations were performed and compared between the navigation group and non-navigation group, post-operatively.

Results
The clinical outcomes were not significantly different between the navigation and non-navigation groups. Furthermore, post-operative reorientation of the acetabular fragment was similar between the navigation and non-navigation groups. However, the discrepancy between the pre-operative planning line and post-operative osteotomy line was significantly improved in the navigation group compared with that in the non-navigation group (p < 0.05). Further, the complication rate was significantly improved in the navigation group (p < 0.001). Conclusion The accuracy of the osteotomy’s position was significantly improved by using the navigation. Therefore, the use of navigation during peri-acetabular osteotomy can avoid complications.

periacetabular-osteotomy-preoperative-planning
The measurement of the distance between the 100-mm radius sphere line that was determined during pre-operative planning and the post-operative iliac bone surface (the error distance) on the a coronal and b axial planes. a The error distance outside the pelvis on the coronal plane (50–45.5 mm= 4.5 mm). b The error of the distance inside the pelvis on the axial plane (57.8–50 mm= 7.8 mm)