Multicenter Mpact DM France

Study Overview
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Brief Summary
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The primary objective of the study is to evaluate the 10-year performance of the MPACT DM cup in the treatment of patients requiring total hip arthroplasty. The primary endpoint is the 10-year life span of the prosthesis according to the Kaplan Meier curve.

Detailed Description
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The primary objective of the study is to evaluate the 10-year performance of the MPACT DM cup in the treatment of patients requiring total hip arthroplasty evaluated through the Kaplan Meier curve. The secondary objectives of the study are: To assess the function of the operated hip Evaluate the safety of the implant Evaluate the stability of the prosthetic components Secondary endpoints were: Harris Hip Score The Harris Hip Score (HHS) items include an analysis of the operated hip according to pain, function, mobility and stability and a deformity analysis. The Harris Hip Score will be used to assess the patient's subjective and objective improvement in the above criteria. Evaluation of standard radiographs from the front and side. Periprosthetic edging and osteolysis will be evaluated using Delee and Charnley zones for the acetabular component and Gruen zones for the femoral component. Evaluation of implant stability and fit using the ARA score. This score is used to determine whether the implant causes changes in the surrounding bone structures. If signs occur, they can be considered either as neutral, showing a simple adaptation and not reducing the result, or as negative to varying degrees. The maximum ARA score is 6 points, negative points from 1 to 4 can be attributed for each of these negative signs. The arithmetic summation of these risk factors will lead to a final score, defining the adaptation of the prosthesis to the bone sleeve at the time the images are taken, and which may naturally vary with time, either positively, if the fixation, which was precarious at the time, stabilizes (secondary osteoinduction by Hydroxyapatite of initial fibrosis zones, for example), or negatively in the presence of an evolving destabilization (there is obviously no negative score). The approach is similar for the femur and for the acetabulum. ❖ Collection of intraoperative and postoperative complications. Complications, such as infection, loosening, deep vein thrombosis (DVT), fracture, as well as other unexpected complications, will be evaluated.

Official Title
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Prospective, Multicenter, Non-Controlled, Non-Randomized, Open-Label Study To Evaluate The Efficacy And Performance Of The Mpact® Dual Mobility Hemispheric Cup

Conditions
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Total Hip Arthroplasty, Survival, Prosthesis

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patient with a disease that meets the indications for use of Medacta implants (according to the instructions for use) Patient eligible for first-line total hip replacement Patient between 18 and 80 years of age Patient covered by the Social Security system or an equivalent protection plan Patient who is capable, in the opinion of the investigator, of fulfilling the requirements of the study Exclusion Criteria: Patient requiring a transplant Patient with progressive local or systemic infection Patient with muscle loss, neuromuscular disease, or vascular impairment of the affected limb making surgery unwarranted Patient with known medical problems that may compromise independent recovery of mobility Patient with a BMI greater than 40 kg/m². Patient with major cognitive problems that do not allow a good understanding of the study requirements Patient living in a geographical area that does not allow the study follow-up Patient participating in interventional research. Minor patient Protected adult patient Vulnerable person according to article L1121-6 of the Public Health Code Pregnant or nursing woman.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 80 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Evaluate the 10-year performance of the MPACT DM cup in the treatment of patients requiring total hip arthroplasty. | Analysis with Kaplan Meier curve considering the revisions of the implants | 10 years after the index surgery | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Evaluate the function of the operated hip | Evaluation of the Harris Hip Score with the analysis of the operated hip for pain, function, mobility and stability and a deformity analysis. The HHS is a measure of dysfunction so the higher the score, the better the outcome for the individual. Results can be recorded and calculated online. The maximum score possible is 100. Results can be interpreted with the following: <70 = poor result; 70-80 = fair, 80-90 = good, and 90-100 = excellent Evaluation of standard radiographs from the front and side. Periprosthetic edging and osteolysis will be evaluated using Delee and Charnley zones for the acetabular component and Gruen zones for the femoral component. | pre-op, 3 months, 1 year, 3 years, 5 years and 10 years after the index surgery | 
| To evaluate the safety of the implant | Collecting all the adverse events through time Collection of intraoperative and postoperative complications. Complications, such as infection, loosening, deep vein thrombosis (DVT), fracture, as well as other unexpected complications, will be evaluated. | Intra-op, 3 months, 1 year, 3 years, 5 years and 10 years after the index surgery | 
| To evaluate the stability of the prosthetic components | Evaluation of implant stability and fit using the ARA score. This score is used to determine whether the implant causes changes in the surrounding bone structures. If signs occur, they can be considered either as neutral, showing a simple adaptation and not reducing the result, or as negative to varying degrees. The maximum ARA score is 6 points, negative points from 1 to 4 can be attributed for each of these negative signs. The arithmetic summation of these risk factors will lead to a final score, defining the adaptation of the prosthesis to the bone sleeve at the time the images are taken, and which may naturally vary with time, either positively, if the fixation, which was precarious at the time, stabilizes (secondary osteoinduction by Hydroxyapatite of initial fibrosis zones, for example), or negatively in the presence of an evolving destabilization (there is obviously no negative score). The approach is similar for the femur and for the acetabulum. | pre-op, 3 months, 1 year, 3 years, 5 years and 10 years after the index surgery |