3D‑printed pelvis model is an efficient method of osteotomy simulation for the treatment of developmental dysplasia of the hip

Abstract

Developmental dysplasia of the hip (DDH) is a congenital or developmental deformation of the hip joint, which may require a high number of surgical interventions. It has been indicated that 3D printing may be used to simulate a fractured pelvis to facilitate the fixation of plates during the surgical procedure. In the present double-blinded randomized clinical trial, the utility of the 3D-printed pelvis model, comprising 3D reconstruction, reverse engineering and rapid prototyping, in the treatment of DDH was evaluated with 3D CT as control. The value of the 3D-printed pelvis model in the surgical management and development of a strategy for an individualized operation for DDH using osteotomy simulation was also assessed. The results indicated that use of the 3D-printed pelvis model increased the success rate of the operation with a shortened surgery time and post-operative recovery time for DDH patients. In addition, the application of the 3D-printed pelvis model allowed for more efficient surgical management of DDH than 3D CT and promoted post-operative recovery of the DDH patients. Pre-operative planning using the 3D-printed pelvis model was feasible for DDH patients. Furthermore, few patients exhibited delayed incision healing, wound infection or nonunion in the DDH group with osteotomy simulation using the 3D-printed pelvis model or 3D-CT. In conclusion, the present study indicated that the 3D-printed pelvis model, including 3D reconstruction, reverse engineering and rapid prototyping, constitutes an efficient tool for pelvic osteotomy simulation, which improves personalized pre-operative planning by providing a visual and accurate osteotomy model for patients with DDH (Chinese Trial Registry No. KCT0012374).

3D - Printed Patient Specific Instrumentation in Corrective Osteotomy of the Femur and Pelvis: A Review of the Literature

“…In keeping with this growing awareness, there have been studies detailing the efficiency of 3D anatomic printed models over 3D CT scanning in the operative treatment of paediatric hip disorders. Liu et al [14] found that in the patients with developmental hip dysplasia (DDH) who had surgery templated using the 3D anatomic printed model, there was a decrease in surgery time, post-operative recovery time, a lower (better) acetabular index and centre edge angle (radiographic parameters of correction). Hedelin et at [15] in his case study showed a strong correlation between the CT scan of the patient's pelvis and a CT scan of the 3D printed model, showing the reliability of these models in teaching and their usefulness in assisting surgeons with mentally visualising complex procedures, as well as a possible tool for quality control in assessment of postoperative correction.…”

How to Restore Rotation Center in Total Hip Arthroplasty for Developmental Dysplasia of the Hip with the Assistance of Three Dimensional Printing Technology? A Pilot Study

“…Huang et al [23] demonstrated that 3-D printing technology increased the predictability, accuracy and reliability of both-column acetabular fractures reduction.Wang reported that, compared with CT images or humerus-subtracted volume renderings,the 3-D-printed model was able to represent the glenoid bony morphology accurately and clearly which facilitated shoulder surgeons to perform preoperative planning [24]. A double-blinded randomized clinical trial indicated that osteotomy simulation on the 3-D-printed pelvis models for DDH patients increased the success rate of the operation and shortened surgery time ,as well as promoted postoperative recovery [25].Xu et al [26] recommended the use of the 3-D printed model before THA in DDH patients due to better preoperative planning and intraoperative orientation,as well as surgical outcomes.Our study demonstrated the high agreement between the size of the acetabular cup and bone defect of simulated operations on 3-D printing models and the actual size used in the operations.…”

How to Restore Rotation Center in Total Hip Arthroplasty for Developmental Dysplasia of the Hip with the Assistance of Three Dimensional Printing Technology? A Pilot Study

“…Huang et al [23] demonstrated that 3-D printing technology increased the predictability, accuracy and reliability of both-column acetabular fractures reduction.Wang reported that, compared with CT images or humerus-subtracted volume renderings,the 3-D-printed model was able to represent the glenoid bony morphology accurately and clearly which faciliated shoulder surgeons to perform preoperative planning [24]. A double-blinded randomized clinical trial indicated that osteotomy simulation on the 3-D-printed pelvis model for DDH patients increased the success rate of the operation and shortened surgery time ,as well as promoted postoperative recovery [25].Xu et al [26] recommended the use of the 3-D printed model before THA in DDH patients due to better preoperative planning and intraoperative orientation,as well as surgical outcomes.Our study demonstrated the high agreement between the size of the acetabular cup and bone defect of simulated operations on 3-D printing models and the actual size used in the operations.…”

“…With the rapid development of 3-D printing technology, the individual life-size models allow surgeons to simulate operations and perform precise treatment,as well as improve outcomes [4][5][6].In this study,we developed a new method to restore the hip rotation center by simulating operations on 3-D printing model.…”