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Fig. 1 | Journal of Orthopaedic Surgery and Research

Fig. 1

From: What are the significant factors affecting pain in patients with Hartofilakidis type Ι developmental dysplasia of the hip?

Fig. 1

A The p/a ratio is calculated by dividing p (the distance from the acetabular joint surface to the edge of the posterior wall of the acetabulum) by a (the distance from the acetabular joint surface to the edge of the anterior wall of the acetabulum), and both are measured on the vertical bisector of the line connecting the teardrop and the outer edge of the acetabulum. B When the vertical bisector is located in the acetabular fossa, the acetabular fossa is ignored. The acetabular articular surface is used as a part of the circle to make the best-fit circle, and the intersection of the trajectory of the circle and the vertical bisector is taken as the point of p and a near-point

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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X