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Chiari's pelvic osteotomy in the treatment of Legg-Calvé-Perthes disease
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Chiari
Area of Science:
- Orthopedic Surgery
- Pediatric Orthopedics
Background:
- Legg-Calvé-Perthes disease affects hip joint development in children.
- Femoral head containment is crucial for successful treatment outcomes.
Purpose of the Study:
- To evaluate the effectiveness of Chiari pelvic osteotomy in treating Legg-Calvé-Perthes disease.
- To identify optimal indications for Chiari osteotomy based on patient age and epiphyseal morphology.
Main Methods:
- Retrospective analysis of 37 hips in 36 patients undergoing Chiari pelvic osteotomy.
- Assessment of surgical outcomes based on femoral head sphericity and containment.
- Correlation of outcomes with preoperative arthrographic findings, including epiphyseal shape.
Main Results:
- Satisfactory or acceptable outcomes achieved in 97% of cases (36 out of 37 hips).
- Poorer results were associated with preoperative saddle-shaped distortion of the epiphysis.
- Successful containment and sphericity were key outcome measures.
Conclusions:
- Chiari pelvic osteotomy is an effective surgical option for Legg-Calvé-Perthes disease when other containment methods are less likely to succeed.
- Specific indications include smooth, severe epiphyseal protrusions in patients aged 7+ years, and severe protrusions without flattening in patients aged 10+ years.
Abstract:
Results of Chiari's pelvic osteotomy in Legg-Calvé-Perthes disease were analyzed in 37 hips of 36 patients. The mean age at surgery was nine years. The results were assessed according to both the quality of sphericity and containment of the femoral head. The results were satisfactory in 26 hips (70%), acceptable in 10 hips (27%), and poor in only one hip (3%). In cases where preoperative arthrography revealed a saddle-shaped distortion of the protruding and flattened epiphysis, the results were less satisfactory. The authors conclude that Chiari's osteotomy is needed where other kinds of containment cannot be expected to be successful. The indications are smooth flattenings of severely protruding epiphyses in patients aged seven years or more, and severe epiphyseal protrusions without flattening in patients 10 years or older.