Legg-Calvé-Perthes disease

Area of Science:

• Orthopedics
• Pediatric Orthopedics
• Hip Development Disorders

Background:

• Legg-Calvé-Perthes disease affects hip development in children.
• Long-term outcomes and treatment efficacy require further investigation.
• Established treatment protocols lack a unified classification system.

Purpose of the Study:

• To introduce a novel classification system for Legg-Calvé-Perthes disease.
• To evaluate the effectiveness of different hip containment treatments.
• To analyze long-term hip deformities following treatment.

Main Methods:

• Evaluation of 480 hips with Legg-Calvé-Perthes disease.
• Development of a new classification system (Class I-IV) based on epiphyseal stage.
• Follow-up to skeletal maturity for 150 hips.
• Analysis of containment methods including Petri casts, Scottish Rite orthosis, AIDI brace, varus osteotomy, and innominate osteotomy.

Main Results:

• Common deformities observed include coxa magna (58%), coxa brevis (21%), coxa irregularis (18%), and osteochondritis dissecans (3%).
• The new classification guides treatment selection based on epiphyseal stage and patient age.
• Containment methods (Petri casts, Scottish Rite orthosis, AIDI brace, varus osteotomy, innominate osteotomy) demonstrated comparable results in 192 hips.

Conclusions:

• The developed classification system provides a framework for tailored treatment of Legg-Calvé-Perthes disease.
• Various hip containment strategies yield similar outcomes when applied appropriately.
• Understanding long-term hip morphology is crucial for managing residual deformities and associated conditions.