Coxa magna

Coxa magna is the asymmetrical, circumferential enlargement and deformation of the femoral head and neck. Definitions in the literature vary but enlargement with asymmetry >10% in size is a reasonable cut-off for diagnosis ¹. 

Pathology

Etiology

• Legg-Calve-Perthes disease
• transient synovitis of the hip
• developmental dysplasia of the hip
• trauma
• septic arthritis / osteomyelitis
• juvenile rheumatoid arthritis
• chronic slipped capital femoral epiphysis