Related Experiment Video
Updated: Jul 11, 2026
07:45
The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report
Published on: August 4, 2022
Computer-aided custom-made hemipelvic prosthesis used in extensive pelvic lesions
Ke-Rong Dai1, Meng-Ning Yan, Zhen-An Zhu
1Department of Orthopaedics, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, P.R. China.
The Journal of Arthroplasty
|October 9, 2007
Summary
Custom-made hemipelvic prostheses, designed using computer-aided methods and rapid prototyping, offer good hip function after internal hemipelvectomy for pelvic tumors. This approach facilitates precise implantation and adjustable acetabular components.
Area of Science:
- Orthopedic surgery
- Biomedical engineering
- Oncology
Background:
- Internal hemipelvectomy is a complex procedure for extensive pelvic lesions.
- Custom prostheses are needed to reconstruct the hemipelvis after resection.
- Challenges include precise fit, stable acetabular component placement, and functional restoration.
Purpose of the Study:
- To evaluate the efficacy of computer-aided design (CAD) and rapid prototyping (RP) for custom hemipelvic prostheses.
- To assess the surgical outcomes and functional results of patients undergoing internal hemipelvectomy with these custom implants.
Main Methods:
- Ten patients underwent internal hemipelvectomy for pelvic lesions.
- Computed tomography (CT) data was used for virtual surgical planning and creating patient-specific pelvic models via RP.
- Custom hemipelvic prostheses were designed and manufactured based on these models, allowing for adjustable acetabular positioning.
Main Results:
- Four patients died within 6-10 months post-surgery.
- The remaining six patients were monitored for 21-48 months, demonstrating good hip function.
- Early complications included hip dislocations (2 patients) and wound healing issues (3 patients), all successfully managed.
Conclusions:
- Computer-aided design and rapid prototyping enable the creation of custom hemipelvic prostheses for internal hemipelvectomy.
- This technique facilitates precise implantation and component orientation, leading to good functional outcomes.
- While complications can occur, they are manageable, highlighting the potential of this reconstructive approach.
