Dassault Systemes Case Studies No Two Hips are Alike: Mobelife leverages realistic simulation for patient-specific design and analysis of hip

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	No Two Hips are Alike: Mobelife leverages realistic simulation for patient-specific design and analysis of hip Dassault Systemes

No Two Hips are Alike: Mobelife leverages realistic simulation for patient-specific design and analysis of hip

Dassault Systemes

Technology Category	Analytics & Modeling - Digital Twin / Simulation Functional Applications - Remote Monitoring & Control Systems
Applicable Industries	Healthcare & Hospitals
Applicable Functions	Product Research & Development Quality Assurance
Use Cases	Digital Twin Predictive Maintenance
Services	Software Design & Engineering Services System Integration
Challenge	The article discusses the challenges faced in hip replacement surgeries, particularly in cases where the patient has outlived the lifespan of the hip prosthesis, which is typically between 15 to 20 years. When a prosthesis fails, a revision surgery is carried out to replace the components. However, a significant challenge faced during implant revision surgery is that the pelvic bone stock is often significantly reduced. Ten-year failure rates of primary hip replacements are estimated at 11.4%. This number more than doubles to 25.6% in case of revisions. In over 58% of those revision failures, the acetabular component is involved. To deal with these challenges, a custom approach is most suitable. Read More
About Customer	The customer in this case study is a 50-year-old woman who was diagnosed with a pseudotumor after Resurfacing Arthroplasty for osteoarthritis of the left hip joint. The revision failed after one year and she developed a pelvic discontinuity. Using conventional methods, the extreme bone loss would make it even more difficult to replace the prosthesis. The woman was able to carefully take her first steps completely pain free a few days after surgery. She is recovering extremely well, exceeding usual primary revalidation patterns. Read More
Solution	Mobelife, a Belgian high-tech company, has developed a completely customized approach based on Computed Tomography (CT) data by combining state-of-the-art image processing tools from Materialise and Abaqus FEA. The process begins with the creation of a 3D model of the patient’s pelvic bone based on CT images. Based on the CT-data, the bone is reconstructed automatically and the implant is designed in close collaboration with the surgeon for unique fit and functionality. The precise orientation of the newly created hip socket is anatomically analyzed. In cases of significant pelvic bone loss, the implant extends onto the major bones of the pelvis for fixation. A custom porous structure is used to fill the gap and a thin porous layer of titanium interfaces between the implant and the bone. Flexibility and compatibility are provided for either press-fit or cemented-liner integration. Read More Log in to view content
Contents

Technology Category

Analytics & Modeling - Digital Twin / Simulation

Functional Applications - Remote Monitoring & Control Systems

Applicable Industries

Healthcare & Hospitals

Applicable Functions

Product Research & Development

Quality Assurance

Use Cases

Digital Twin

Predictive Maintenance

Services

Software Design & Engineering Services

System Integration

Challenge

The article discusses the challenges faced in hip replacement surgeries, particularly in cases where the patient has outlived the lifespan of the hip prosthesis, which is typically between 15 to 20 years. When a prosthesis fails, a revision surgery is carried out to replace the components. However, a significant challenge faced during implant revision surgery is that the pelvic bone stock is often significantly reduced. Ten-year failure rates of primary hip replacements are estimated at 11.4%. This number more than doubles to 25.6% in case of revisions. In over 58% of those revision failures, the acetabular component is involved. To deal with these challenges, a custom approach is most suitable.

About Customer

The customer in this case study is a 50-year-old woman who was diagnosed with a pseudotumor after Resurfacing Arthroplasty for osteoarthritis of the left hip joint. The revision failed after one year and she developed a pelvic discontinuity. Using conventional methods, the extreme bone loss would make it even more difficult to replace the prosthesis. The woman was able to carefully take her first steps completely pain free a few days after surgery. She is recovering extremely well, exceeding usual primary revalidation patterns.

Solution

Mobelife, a Belgian high-tech company, has developed a completely customized approach based on Computed Tomography (CT) data by combining state-of-the-art image processing tools from Materialise and Abaqus FEA. The process begins with the creation of a 3D model of the patient’s pelvic bone based on CT images. Based on the CT-data, the bone is reconstructed automatically and the implant is designed in close collaboration with the surgeon for unique fit and functionality. The precise orientation of the newly created hip socket is anatomically analyzed. In cases of significant pelvic bone loss, the implant extends onto the major bones of the pelvis for fixation. A custom porous structure is used to fill the gap and a thin porous layer of titanium interfaces between the implant and the bone. Flexibility and compatibility are provided for either press-fit or cemented-liner integration.

Impact #1	The patient-specific implant design process allows for personalized restoration in terms of anatomy, stability, and mobility in most devastated pelvic bones.
Impact #2	The process helps to investigate mechanical integrity of the design and avoid bone resorption (stress shielding).
Impact #3	The implant design was virtually tested with Abaqus to see how it would perform for this specific patient.

Impact #1

The patient-specific implant design process allows for personalized restoration in terms of anatomy, stability, and mobility in most devastated pelvic bones.

Impact #2

The process helps to investigate mechanical integrity of the design and avoid bone resorption (stress shielding).

Impact #3

The implant design was virtually tested with Abaqus to see how it would perform for this specific patient.

Benefit #1	The patient was able to take her first steps completely pain free a few days after surgery.
Benefit #2	The patient is recovering extremely well, exceeding usual primary revalidation patterns.

Benefit #1

The patient was able to take her first steps completely pain free a few days after surgery.

Benefit #2

The patient is recovering extremely well, exceeding usual primary revalidation patterns.

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Overview

No Two Hips are Alike: Mobelife leverages realistic simulation for patient-specific design and analysis of hip

Operational Impact

Quantitative Benefit