Abstract
We retrospectively reviewed 47 hips with symptomatic acetabular dysplasia treated with shelf acetabuloplasty. The mean follow-up period was 17 years with a minimum of 5 years. Ten hips (21%) had been converted to total hip arthroplasty (THA) at a mean of 18.2 years. Survival analysis using conversion to THA as an endpoint showed survival rate of 97.8% at 10 years and 78% at 20 years. Forty hips without preoperative joint space narrowing had a survival rate of 90% at 20 years postoperatively. This was significantly higher (p < 0.01) than that of seven hips with joint space narrowing, which was 29% at 20 years. In 27 hips from patients aged <35 years at operation, the survival rate was 95% at 20 years. This was significantly higher (p = 0.00761) than the survival rate of 55% at 20 years in 20 hips from patients aged ≥35 years.
No significant relationship between survival and preoperative center-edge angle (p = 0.26) or severity of the deformity in the proximal femur (p = 0.532) was demonstrated.
This operation is a safe and reliable procedure for symptomatic acetabular dysplasia. Positive long-term results were obtained for the hips with early osteoarthritic change in patients aged <35 years.
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Abbreviations
- AHI:
-
Acetabular head index
- CE:
-
Center-edge angle
- JOA score:
-
Japanese Orthopaedic Association score
- JS:
-
Joint space
- KL grade:
-
Kellgren–Lawrence grade
- OA:
-
Osteoarthritis
- THA:
-
Total hip arthroplasty
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Iida, S., Shinada, Y., Suzuki, C. (2018). Advantages and Limitations of Shelf Acetabuloplasty for Dysplastic Osteoarthritis of the Hip. In: Hirose, S. (eds) Revival of Shelf Acetabuloplasty. Springer, Singapore. https://doi.org/10.1007/978-981-10-8920-6_6
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