Management of Neglected Developmental Dysplasia of the Left Hip in a 14-Year-Old Child with Staged Osteotomies Planned with 3D-Printed Model - A Case Report.

Introduction: Developmental dysplasia of hip (DDH) is abnormal development of hip joint causing mild subluxation to complete dislocation of femoral head from acetabulum. Incidence in India is 1-9.2/1000 . Typical risk factors for DDH are said to be female child, first born, breech position, positive family history, left hip, and unilateral involvement. Femoral head and acetabular compressive forces are mutually important stimulators for normal growth (both shape and depth). Deviation from above normal process due to subluxated or dislocated head since birth can lead to abnormal development of both acetabulum and femoral head. Diagnosis of the DDH is made at birth using clinical test and radiologically using ultrasound of hip joint. Management is based on the age of presentation and severity of the instability. Most hips are managed conservatively management depends on the age and symptoms of the patient. Case Report: A 14-year-old female child presented with the complaints of pain in the left hip and difficulty in walking. On clinical and radiological examination, she was diagnosed to have developmental dysplasia of the left hip with partial subluxation of the left hip. Thorough investigation and planning were done using CT PBH and 3D reconstruction of the pelvis to plan the osteotomy. Stages surgery was planned, first, triple innominate osteotomy was performed and later femoral varus derotation osteotomy 6 weeks later. At 3-year follow-up, the patient is pain free and is having no difficulty in doing day-to-day activities. X-ray showing complete coverage of the femoral head with no changes of arthritis in hip. Conclusion: Late presentations of neglected developmental dysplasia poses difficult challenges in management. It can be addressed with osteotomies for improving range of motion and preventing future early arthritis. In our case, good functional range of motion was restored at 3 years follow-up.