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[Acetabular Osteolysis in Total Hip Replacement - When to Retain the Cup?]
B Lutz1, M Faschingbauer1, R Bieger1
1Orthopädische Universitätsklinik Ulm am RKU, Ulm.
Zeitschrift Fur Orthopadie Und Unfallchirurgie
|June 2, 2016
Summary
Managing periacetabular osteolysis after cementless total hip arthroplasty requires careful assessment. Conservative monitoring is preferred for stable, asymptomatic cases, while surgical revision may be necessary for signs of loosening or progressive bone loss.
Area of Science:
- Orthopedic Surgery
- Biomaterials Science
- Radiology
Background:
- Periacetabular osteolysis is a common long-term complication of cementless total hip arthroplasty.
- Deciding between retaining or revising an acetabular cup with osteolysis presents a clinical challenge.
Purpose of the Study:
- To outline diagnostic and management strategies for periacetabular osteolysis following total hip arthroplasty.
- To differentiate between conservative monitoring and surgical intervention based on clinical and radiological findings.
Main Methods:
- Review of diagnostic modalities, emphasizing computed tomography for osteolysis assessment.
- Evaluation of treatment options including clinical monitoring, isolated liner exchange, and complete cup revision.
- Consideration of patient-specific factors and implant stability in decision-making.
Main Results:
- Asymptomatic patients with well-fixed cups and no progressive osteolysis benefit from continuous monitoring.
- Surgical intervention, typically cup revision, is indicated for cup loosening, malposition, significant osteolysis, fractures, or implant wear.
- Isolated liner exchange is an option for asymptomatic patients with stable cups.
Conclusions:
- Thorough preoperative diagnostics are essential for guiding treatment decisions in periacetabular osteolysis.
- Management should be individualized, balancing risks and benefits of monitoring versus surgical revision.
- The long-term efficacy of filling osteolytic defects via screw holes or osseous windows requires further investigation.
