Ballooning of femoral head in juvenile idiopathic arthritis
Keywords:
juvenile idiopathic arthritis (JIA) , femoral epiphysisAbstract
Hip joints are involved in 35-63% of the JIA patients, leading to disability and total hip replacements in about 26-44% of patients.1 Periosteal thickening at the diaphysis of metacarpals, metatarsals and phalanges is a characteristic feature of JIA. It often progresses to enlargement of the femoral epiphysis with premature fusion of the growth plate.2, 3 Erosions and joint space loss resulting in protrusion of the acetabulum may appear late during the disease.