3D Printing Navigation Template Used in Total Hip Arthroplasty for Developmental Dysplasia of the Hip
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ORIGINAL ARTICLE
3D Printing Navigation Template Used in Total Hip Arthroplasty for Developmental Dysplasia of the Hip Liang Yan1,2 · Peng Wang2 · Haibin Zhou1 Received: 5 January 2020 / Accepted: 18 March 2020 © Indian Orthopaedics Association 2020
Abstract Background The purpose of our study was to explore the feasibility of 3D printing navigation template used in total hip arthroplasty (THA) for adult developmental dysplasia of the hip (DDH). Materials and Methods 25 patients who received THA for DDH from February 2014 to May 2018 were randomized into the control or intervention group. Of these patients, 12 received THAs assisted with 3D printing navigation templates, 13 THAs underwent THAs without navigation templates. The mean follow-up was 1.6 (range, 1.2–3.8) years. Clinical scores and radiographic results were evaluated for two groups. Results Operating time, intra- and postoperative hemorrhage and Harris Hip Score (HHS) at 6 months postoperatively in the 3D printing group were better than those for patients in the conventional hip replacement group, while infection and implant loosening were 0 in the two groups. There were no significant differences in anteversion angle, abduction angle and the distance from rotation center to the ischial tuberosity line in 3D printing group as compared to the normal side. The abduction angle and the distance from rotation center to the ischial tuberosity line were significantly different between the two sides in the traditional group. Conclusion Application of the 3D printing template for THA with DDH can facilitate the surgical procedure and create an ideal artificial acetabulum placement. Keywords 3D printing technology · Total hip arthroplasty · Developmental dysplasia of the hip · Navigation template
Introduction Adult developmental dysplasia of the hip (DDH), the leading cause of secondary osteoarthrosis [1, 2], has a femoral head dislocation and acetabular developmental dysplasia. Most patients eventually have to undergo total hip arthroplasty (THA), which provides reliable pain relief and functional improvement to the hip [3, 4]. Performing THA in severe DDH presents many challenges to the surgeon because of the extensive distortions to the native anatomy. DDH patients Liang Yan and Peng Wang contributed equally to this work and should be considered co-first authors. * Haibin Zhou [email protected] 1
Department of Orthopedics, The Second Affiliate Hospital of Soochow University, Soochow 215000, Jiangsu, China
Department of Orthopedics, Nantong Rich Hospital, Nantong 226300, Jiangsu, China
2
may have a shallow acetabulum, a straight narrow femoral canal, and associated circumferential soft-tissue deformities [5], as for the true acetabulum, it is small; the anterior wall is relatively thin and the amount of bone is less; the posterolateral wall is very thick [6]. For Crowe III/IV DDH, it is challenging to identify and locate the true acetabulum during the operation. If the acetabular prosthesis is placed improperly, the prosthesis will be ea
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