Long-term performance of hydroxyapatite-coated acetabular cups
Author Information
Author(s): D'Angelo Fabio, Molina Mauro, Riva Giacomo, Zatti Giovanni, Cherubino Paolo
Primary Institution: Department of Orthopaedics and Traumatology, University of Insubria, Varese, Italy
Hypothesis
The use of hydroxyapatite-coated cups could improve osteointegration and stability in total hip arthroplasty.
Conclusion
The study confirms that hydroxyapatite-coated cups have a high rate of osteolysis and a significant revision rate, indicating poor long-term performance.
Supporting Evidence
- 22 out of 183 cups were revised due to various complications.
- The mean Harris Hip Score improved from 50.15 preoperatively to 92.69 postoperatively.
- 89% of the implants showed signs of peri-acetabular osteolysis.
- The cumulative survivorship at 10 years was 88.9%.
Takeaway
This study looked at hip implants covered with a special material to help them stick to bone. It found that many of these implants didn't last very long and caused problems.
Methodology
276 hydroxyapatite-coated cups were implanted in 256 patients, and their performance was evaluated over a mean follow-up of 10 years.
Potential Biases
Potential bias due to the loss of follow-up and the subjective nature of patient-reported outcomes.
Limitations
The study had a loss of follow-up for some patients, which may affect the results.
Participant Demographics
256 patients with a mean age of 63 years, including 160 women (63%) and 96 men (37%).
Statistical Information
P-Value
p<0.05
Confidence Interval
95%
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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