Orthopedic Disorder
Conditions
Keywords
Osteoarthritis, Hip, Total hip arthroplasty, leg discrepancy, preoperative planning
Brief summary
Residual leg length discrepancy is a common issue after total hip arthroplasty(THA). Digital preoperative planning may improve the accuracy of the surgical procedure and may help the surgeon to precisely predict implants sizes
Detailed description
Total hip arthroplasties (THAs) are used to restore locomotion. More than 150,000 THAs are performed each year in France. Better outcomes require a restoration of limb lengths and anatomy. Post-operative discrepancy is the main cause of complaints and financial compensation in the US after THA. As such, the investigators aim to use preoperative digital planning using TraumaCad to optimize the restoration of the center of rotation of the hips. Preoperative planning are usually performed using anteroposterior standard radiographs, which are scaled to an inaccurate scale. The TraumaCad system (Brainlab®) allows the adjustment of the scales to each patient and the virtual positioning of the implants in order to simulate the intervention for the restitution of the geometrical parameters of the hip.
Interventions
DEVICEevaluation of pre-op planning using Traumacad
The study will be compare pre-op planning with standard condition or with TraumaCad
Sponsors
University Hospital, Toulouse
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* being older than18 years, * osteoarthritis as the indication for THA
Exclusion criteria
* THAs after femoral neck fractures, * revision surgery, * major architectural anomaly (Bone tumor, prior fracture of the pelvis, hip dysplasia), * patients under legal protection, * pregnancy or breast-feeding
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| postoperative residual discrepancy | day 3 | The primary endpoint is the postoperative residual discrepancy measured on the radiographs on postop day 3 in millimeter compared using standard planning methods compared to TraumaCad. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| comparisons of the reproducibility of the femoral implants sizes | day 3 | Secondary endpoints is comparisons of the reproducibility of the femoral implants sizes predicted by the software |
| comparison of pelvis parameters | day 3 | Secondary endpoints is the comparison of pelvis parameters in the 2 groups (offset, positioning of the implants) postoperatively. The angle of femur axis and the center of rotation of hip will be measure on the radiography of day 3 |
Countries
France
Outcome results
None listed