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Fig. 2 | Journal of Orthopaedic Surgery and Research

Fig. 2

From: Controlled fracture of the medial wall versus structural autograft with bulk femoral head to increase cup coverage by host bone for total hip arthroplasty in osteoarthritis secondary to developmental dysplasia of the hip: a retrospective cohort study

Fig. 2

Schematic showing the measurement of medial protrusion and cup coverage. Point O is the center of the cup component. AB is the diameter of the cup component. Point C is the intersection between the edge of the cup implant and the ilium. Point D and point E are the intersections between the medial edge of the acetabular component and Kohler’s line. The rate of cup coverage = [(180° − ∠AOC)/180°] × 100%. The rate of medial protrusion = (∠DOE/180°) × 100%

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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X