Okano, Kunihiko, Hiroshi Enomoto, Makoto Osaki, and Hiroyuki Shindo. 2008. “Outcome of Rotational Acetabular Osteotomy for Early Hip Osteoarthritis Secondary to Dysplasia Related to Femoral Head Shape: 49 Hips Followed for 10–17 Years”. Acta Orthopaedica 79 (1):12-17. https://doi.org/10.1080/17453670710014699.