This site is targeted at medical and radiology professionals, contains user contributed content, and material that may be confusing to a lay audience. Use of this site implies acceptance of our Terms of Use.

Protrusio acetabuli

Dr Yuranga Weerakkody and Radswiki et al.

Acetabular protrusio (also known as acetabular protrusion) is intrapelvic displacement of the medial wall of the acetabulum.

Pathology

Protrusio acetabuli is divided into two types, primary and secondary.

Primary protrusio acetabuli

Characterized by progressive protrusio in middle aged women, May be associated with OA and May be familial.

Secondary protrusio acetabuli

Causes include:

Mnemonic

My PROTRUSIO

Radiographic features

intrapelvic displacement of the medial wall of the acetabulum

Diagnosis

Diagnosis is made on the basis of an anteroposterior radiograph of the pelvis that demonstrates a center-edge angle greater than 40 degrees and medialization of the medial wall of the acetabulum past the ilioischial line.³

This article is a stub, which means it needs more content. You can contribute to Radiopaedia.org too. Just register and edit... every little bit helps.

References

This article is in need of some more references!
You can make a difference to Radiopaedia.org by adding some relevant ones.
1. Kuhlman JE, Scott WW, Fishman EK et-al. Acetabular protrusion in the Marfan syndrome. Radiology. 1987;164 (2): 415-7. Radiology (abstract) - Pubmed citation
2. Van De Velde S, Fillman R, Yandow S (2006). "The aetiology of protrusio acetabuli. Literature review from 1824 to 2006". Acta Orthop Belg 72 (5): 524–9. PMID 17152413
3. McBride MT, Muldoon MP, Santore RF, Trousdale RT, Wenger DR (2001). "Protrusio acetabuli: diagnosis and treatment". J Am Acad Orthop Surg 9 (2): 79–88. PMID 11281632