Radswiki T, Knipe H, Baba Y, et al. Acetabular protrusion. Reference article, Radiopaedia.org (Accessed on 05 Nov 2024) https://doi.org/10.53347/rID-12136
Acetabular protrusion, also known as protrusio acetabuli, is intrapelvic displacement of the acetabulum and femoral head, so that the femoral head projects medial to the ilioischial line. It should be differentiated from coxa profunda.
Acetabular protrusion is divided into primary and secondary types.
Primary
Primary acetabular protrusion is characterized by a progressive protrusion in middle-aged women. The condition may be associated with osteoarthritis and may be familial.
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