Related Experiment Video
Updated: Mar 6, 2026
The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report
Published on: August 4, 2022
Uncemented and custom made hip prostheses in patients younger than 50 years
J -N Argenson1, Ph Paris1, E Bonis1
1Service de Chirurgie Orthopédique et Traumatologique, Université de la Méditerranée, CHU Sud, Hôpital Sainte-Marguerite, BP 29, 13274, Marseille Cedex 09, France.
Insights
Custom cementless hip stems in younger patients showed a low failure rate of 5.5% after two years. These patient-specific implants effectively restore hip function in complex cases.
Area of Science:
- Orthopedic surgery
- Biomedical engineering
- Radiology
Background:
- Younger patients undergoing hip arthroplasty often have complex femoral anatomy due to conditions like developmental dysplasia of the hip (CDH), osteotomy, avascular necrosis (AVN), or post-traumatic osteoarthritis.
- Traditional hip implants may not adequately address these anatomical challenges, potentially leading to suboptimal outcomes.
Purpose of the Study:
- To evaluate the clinical and radiographic outcomes of custom cementless hip stems in patients aged 50 years or younger.
- To assess the efficacy of patient-specific intramedullary and extramedullary components in restoring hip biomechanics.
Main Methods:
- A retrospective review of 109 hip arthroplasties using custom cementless stems in patients 50 years or younger.
- Minimum follow-up of two years.
- Analysis of etiologies, revision rates, and overall clinical and radiographic failure rates.
Main Results:
- A low revision rate of 1.8% was observed.
- The overall clinical and radiographic failure rate was 5.5%.
- Custom CT-based intramedullary stems provided stability by matching diverse femoral metaphyses.
- Custom CT-based extramedullary neck offset components optimized prosthetic neck orientation.
Conclusions:
- Custom cementless hip stems are a viable option for younger patients with complex hip conditions.
- These patient-specific implants demonstrate favorable short-term outcomes with low failure rates.
- The custom design allows for precise restoration of hip joint biomechanics and function.
Abstract:
One hundred and nine hip arthroplasties using custom cementless stems performed in patients 50 years of age or younger were reviewed after a minimum follow-up of two years. The etiologies included mainly major deformation of the upper femoral metaphysis such as CDH or after osteotomy and some cases of AVN or post-traumatic osteoarthritis. Two stems (1,8%) were revised and the overall clinical and radiographic failure rate was 5,5%. The intramedullary part of the custom stem (CT based) is able to match any kind of femoral metaphysis to provide stem stability, and the extramedullary part, the neck offset (CT based) can provide an optimal orientation of the prosthetic neck in the frontal and the horizontal planes, to restore physiological hip function.
More Related Videos
08:40Author Spotlight: A Novel 3D-Printed Titanium Implant for Minimally Invasive Treatment of Hip Dysplasia in Young Dogs
Published on: April 19, 2024
09:51The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
Published on: September 7, 2022