Hamanishi, Chiaki, Seisuke Tanaka, and Takao Yamamuro. 1992. “The Spitzy Shelf Operation for the Dysplastic Hip Retrospective 10 (5-25) Year Study of 124 Cases”. Acta Orthopaedica 63 (3):273-77. https://doi.org/10.3109/17453679209154781.