Painless period after Spitzy shelf operation for residual hip dysplasia--A long-term study of 47 children and young adults.

Objective: To study the effects of the Spitzy shelf operation on hip pain. Method: A modified Spitzy shelf procedure was performed in 60 hips with residual hip dysplasia. The mean age at surgery was 11.7 years (range 5.5-22.4 years). Results: Twenty-one hips had pain preoperatively. One year postoperatively 57 hips (95%) were painless. The mean postoperative painless period in patients with > 10 years follow-up was 24.1 years (range 5.0-51.5 years). The only independent predictor of long duration of painlessness was preoperative CE angle ≥10°. Conclusion: The Spitzy procedure had favorable short- and long-term effects on hip pain. [ABSTRACT FROM AUTHOR]