Closed Reduction with Adductor Tenotomy and Casting for Developmental Dysplasia of the hip in children below 2 years of age

Background: Developmental dysplasia of the hip (DDH) includes a wide range of abnormalities of the hip that can emerge at any time including embryonic period, infancy, or childhood. The purpose of this study was to examine the clinical and radiographic outcomes of patients with DDH, treated with adductor tenotomy and closed reduction. Methods: The study was retrospectively performed on 30 children (33 joints) with DDH, who were treated with adductor tenotomy, closed reduction and SpicaCast in Ahvaz Razi Hospital during 2015-2017. Inclusion criteria were patients diagnosed with DDH and below 2 years of age. Exclusion criteria were connective tissue diseases, secondary dislocation due to previous infection and acetabulum dysplasia in the context of specific syndrome. After the operation, the patients were evaluated for the severity of injuries associated with dislocation or subluxation of hip joint and hip joint congruity. The radiographic results were studied based on Severin, Tonnis grading, McKay and acetabularindices. Results: The preoperative mean acetabular index of36.54 [+ or -] 3.27 degrees significantly dropped to postoperative of 27.06 [+ or -] 2.15 degrees. According to McKay criteria, 90.9% of the patients had excellent and good therapeutic results after the surgery. According to Tonnis criteria, 93.9% of patients were in Class I and II after the surgery. Moreover, in radiographic evaluations,96.9% of the patients were in Class Ia and Ib based on Severin criteria. In 1 patient (3.03%), osteonecrosis of the head was found, in 2 patients (6.06%), walking and lameness impaired walking, and in 3 patients (9.09%), sifflng was reported. All patients were female in this study. Conclusion: According to the clinical results and evaluations of this study, closed reduction along with adductor tenotomy can be used as an appropriate technique for the treatment of patients with DDH at an early age. Keywords: adductor tenotomy, developmental dysplasia of the hip (DDH), closed reduction