MRI assessment of DDH after reduction

Abstract

SUMMARYObjective: In this study, the effectiveness of magnetic resonance imaging (MRI) in patients with developmental dysplasia of the hip (DDH) after reduction was examined. Method: Forty-two hips of 31 patients treated between 2003 and 2012 were examined prospectively. The femur head and acetabulum interaction were examined by MRI performed postreduction. Results: The average follow-up period was 40.47 ± 36.52 months. Eleven, 10 and 10 patients were diagnosed as bilateral (B), right (R) sided and left (L) sided, respectively. The average age on MRI was 13.1 months (min, 5; max, 24). MRI was obtained without sedation, except in three patients. The mean MRI duration was 5.21 min (range, 3.55-10.50 min). Concentric reduction was monitored in 19 hips of 15 patients. Postreduction redislocation was monitored in eight hips of six patients. Conclusions: MRI was beneficial in DDH because it was able to assess the hip extensively, did not require anesthesia, and did not use radiation. MRI provided advanced structural information that enabled the assessment of potential prevention of reduction. MRI was found to be an effective treatment scheduling method for DDH at an early period postreduction. MRI should be used more commonly in DDH.