Arthrogram in Legg-Calvé-Perthes disease

Area of Science:

• Orthopedics
• Pediatric Orthopedics
• Radiology

Background:

• Legg-Calvé-Perthes disease (L41.4) treatment hinges on "containment" to maintain the femoral head within the acetabulum.
• Conventional radiography is insufficient for monitoring femoral head shape and size during disease progression.
• Advanced imaging like arthrography and MRI are necessary for accurate assessment.

Purpose of the Study:

• To highlight the importance of hip arthrography in managing Legg-Calvé-Perthes disease.
• To emphasize the classification system for identifying hips at risk.
• To advocate for dynamic pneumoarthrography in surgical planning.

Main Methods:

• Review of diagnostic imaging techniques for Legg-Calvé-Perthes disease.
• Application of Laredo's 1985 arthrographic classification system.
• Evaluation of dynamic pneumoarthrography for surgical positioning.

Main Results:

• Hip arthrography provides critical information on femoral head morphology and acetabular containment.
• Laredo's Group III ("hip at premature arthrographic risk") identifies cases requiring intervention for better results.
• Dynamic pneumoarthrography aids in determining optimal femoral head positioning for surgery.

Conclusions:

• Accurate assessment of femoral head containment is vital in Legg-Calvé-Perthes disease management.
• Dynamic hip arthrography is superior to conventional radiography for surgical planning.
• Early identification and intervention in high-risk groups improve treatment outcomes.