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Research identifies risk factors for mechanical failure of acetabular components after fracture
Recently published data cited patient age, gender, the presence of sclerotic acetabular changes and the severity of acetabular deficiency as significant risk factors for mechanical failure of cementless acetabular reconstruction performed for hip fractures previously treated with fixation.
For a mean of 120 months, researchers followed 56 patients who underwent cementless total hip arthroplasty (THA) after sequelae from a previous open reduction and internal fixation for acetabular fracture. Using radiographic evidence of loosening or revision due to aseptic loosening as an endpoint, researchers analyzed the 10-year survival rate of acetabular components.
The mean overall 10-year survival rate was 87%, with 100% survivorship seen in women and 80% survivorship seen in men. Patients younger than 50 years had lower survival rates than older patients (77% vs. 91%). Patients with Paprosky III acetabular deficiency had a 54% survivorship vs. 90% for patients with no or lesser deficiency. In addition, investigators found survival rates of 78% for patients with sclerotic changes in the acetabulum and 92% for patients without these changes. The investigators concluded male gender, age younger than 50 years, large acetabular defects and the presence of sclerotic changes were significantly linked with survivorship of the component. ‒ by Monica Jaramillo
Disclosures: The researchers report no relevant financial disclosures.