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Protrusio acetabuli prosthetica.

D C Morley, R H Schmidt

    Orthopaedic Review
    |March 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

    Protrusio acetabuli prosthetica, a hip replacement failure, involves component migration into the pelvis. Treatment focuses on restoring acetabular anatomy and creating a medial buttress, with resection arthroplasty as a last resort.

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    Area of Science:

    • Orthopedic surgery
    • Biomedical engineering
    • Radiology

    Background:

    • Protrusio acetabuli prosthetica is a complication of hip arthroplasty.
    • It is characterized by intrapelvic migration of the acetabular component.
    • This condition signifies hip replacement failure.

    Observation:

    • Three degrees of protrusio acetabuli prosthetica are defined based on component migration and medial acetabular wall integrity.
    • Predisposing factors include overreaming, pelvic perforations, osteopenia, infection, trauma, and bone deficiency states.
    • Hypertrophic membrane formation can also contribute to this condition.

    Findings:

    • Treatment requires reestablishing the radiographic anatomic position of the acetabulum.
    • Construction of a medial prosthetic or biologic buttress is essential for repair.

    Related Experiment Videos

  • Biologic medial wall reconstruction utilizes allograft or autograft bone in various configurations (bulk, chipped, pulverized).

    • Implications:

    • Effective management aims to restore hip joint function and stability.
    • Surgical techniques focus on anatomical reconstruction and structural support.
    • Severe cases may necessitate resection arthroplasty, highlighting the complexity of hip replacement revision.