ACETABULAR DEVELOPMENT AFTER OPERATIVE TREATMENT OF RESIDUAL ACETABULAR DYSPLASIA: A COMPARATIVE STUDY BETWEEN DIFFERENT AGE GROUPS

Abstract

Treatment of residual acetabular dysplasia is still controversial regarding the timing of Surgery, and the type of surgical procedur

Material and Methods: We analyzed 70 patients (83 hips) operated between 1980–1988 year, in which Salter innominate osteotomy was performed in the treatment of residual acetabular dysplasia in DDH. Patients were divided in two different age groups: from 2–4 (53 hips) and 4–6 (30 hips) years. The average follow up was 7 years (from 2 to 10 years). Acetabular remodeling was radiographically assessed by measuring of the Acetabular Index (AI) at the beginning and after the 5 years of age subsequently by measuring the CE angle of Wiberg. All preoperative hips were dysplastic according to Tonnis (+2SD) criteria. Results were statistically analyzed by using the Student’s T test, and One Way Repeated Measures ANOVA, with the correction for the different age groups.

Results: We found that there were no statistically significant differences in AI and CE angle between these two age groups and between these groups and normal values.

Conclusion: We recommend Salter innominate osteotomy as a procedure of choice in the treatment of acetabular dysplasia in DDH, provided the patient is younger than 6 years of age.