hip arthroplasty and its revision in a child: case report and literature review

juvenile idiopathic arthritis is the leading cause of hip replacement in young children. however, arthroplasty in this population is challenging with several concerns about quality of the growing bone, young age for revision surgery, and difficulties in potential several revisions. in this study we introduce a case of a 12-year old who is one of the youngest patients to undergo revision hip arthroplasty. the index operation was done as a hybrid replacement, cemented for stem and press fit for acetabular component. two years later revision was done with severe femoral deficiency. this second procedure was challenging but with short-term promising results. so we reviewed the literature for arthroplasty in this young population regarding recent findings and trends. according to the literature survival of the prosthesis is longer with a cemented acetabular component and press fit stem; however, there are evidences that show poor outcome of joint replacement after the first revision in juvenile idiopathic arthritis patients.