Sonography for evaluation of containment in Perthes disease: A comparison with magnetic resonance imaging

Purpose: The objective of the present study was to investigate whether the sonographic visualisation of lateralization of the femoral head is comparable to Magnetic Resonance Imaging (MRI) and so could contribute to the diagnosis of containment in patients with Perthes disease. Methods: 46 patients with unilateral Perthes disease (age: 5.9 ± 2.3 years) of Catterall group III/IV were each evaluated at first presentation by means of Ultrasound (US) and MRI of both hip joints to evaluate the morphology of the acetabular lip (LA) and the epiphysis (EP). The diagnosis of Containment was performed in the MRI as well a…