4-year follow-up of ultrasound-based diagnosis and non-surgical treatment of developmental dysplasia of the hip in mongolia: a prospective cohort study

Purpose: Avascular necrosis of the femoral head and residual dysplasia can occur after non-surgical treatment of developmental dysplasia of the hip (DDH). Both are indications for surgical procedures and cause pain and early osteoarthritis despite interventions. We therefore aimed to determine their prevalence in a prospective cohort study of Mongolian newborns. Materials and methods: Hips of all children born within one year in the largest pediatric hospital of Mongolia (n = 8356) were examined by ultrasound at a median age of one day. If DDH was present, the patient was treated with a Tubinger splint (n = 107)…