Computer-assisted anteverting eccentric rotational acetabular osteotomy for recurrent posterior dislocation associated with acetabular retroversion: a case report

• Main Authors: Hiroshi Imai, Jun Takeba, Akira Maruishi, Joji Miyawaki, Tomomi Kamada, Hiromasa Miura
• Format: Article
• Language: English
• Published: BMC 2019-01-01
• Series: Journal of Medical Case Reports
• Subjects: Acetabular retroversion; Pincer-type femoroacetabular impingement; Posterior hip instability; Recurrent posterior dislocation of the hip; Eccentric rotational acetabular osteotomy; Preoperative three-dimensional surgical planning
• Online Access: http://link.springer.com/article/10.1186/s13256-018-1949-8

Abstract Background Acetabular retroversion is a rotatory abnormality of the entire hemipelvis that includes anterior over-coverage and posterior deficiency of the acetabulum, and is associated with pincer-type femoroacetabular impingement and posterior hip instability. Acetabular retroversion is thought to cause posterior dislocation of the hip in athletes due to both the pincer-type femoroacetabular impingement and posterior hip instability. Case presentation A 26-year-old Japanese man had acetabular retroversion that induced recurrent posterior dislocation of his hip due to excessive hip flexion while wakeboarding. We performed anteverting eccentric rotational acetabular osteotomy using preoperative three-dimensional planning and an intraoperative computerized navigation system. Our patient was able to return to sports activities 1 year postoperatively. Conclusions Both preoperative three-dimensional surgical planning software and an intraoperative navigation system can provide a highly accurate map for this complicated surgery that simultaneously improves the pincer-type femoroacetabular impingement and posterior deficiency of the acetabulum.