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[Early follow-up study on three-dimensional-printed customized porous acetabular components for reconstructing extensive acetabular bone defects in primary total hip arthroplasty].

Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery·2025

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Three-dimensional-printed customized prosthesis for pubic defect: prosthesis design and surgical techniques.

Yuqi Zhang1,2, Li Min1,2, Minxun Lu1,2

  • 1Department of Orthopedics, West China Hospital, Sichuan University, No. 37 Guoxuexiang, Chengdu, 610041, Sichuan, People's Republic of China.

Journal of Orthopaedic Surgery and Research
|July 15, 2020
PubMed
Summary

Three-dimensional (3D)-printed custom prostheses offer a viable solution for reconstructing pubic bone defects following type III resections. This innovative approach ensures precise anatomical fit and functional restoration.

Keywords:
3D-printedDesign solutionProsthesisSurgical techniqueType III hemipelvectomy

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Area of Science:

  • Biomedical Engineering
  • Orthopedic Surgery
  • Materials Science

Background:

  • Pubic bone defects pose significant reconstructive challenges.
  • Type III resections necessitate advanced prosthetic solutions.

Purpose of the Study:

  • To detail the design and surgical application of 3D-printed custom prostheses for pubic bone defects.
  • To evaluate the feasibility of this technique in patients undergoing type III resections.

Main Methods:

  • Utilized radiography data to create 3D pelvic models and simulate virtual surgery.
  • Measured detailed anatomical parameters of the pubis and acetabulum.
  • Designed and fabricated patient-specific prostheses with porous structures for bone integration.
  • Employed osteotomy guides and plastic models for surgical accuracy.

Main Results:

  • Prostheses were of two types: stemmed (60%) and non-stemmed (40%).
  • Mean follow-up was 13.6 months.
  • Detailed anatomical measurements of normal pubic dimensions and arcs were recorded for different resection types.
  • Porous structures (600-μm pore size, 70% porosity) were incorporated for bone contact.

Conclusions:

  • 3D-printed custom prostheses represent a feasible reconstructive option for type III pubic bone defects.
  • The design process is meticulous, relying on precise anatomical measurements.