A Clinical Investigation of the M2a- Taper™ Hip System

Study Overview
=================
Brief Summary
-----------------
The purpose of this prospective clinical data collection is to document the performance and clinical outcomes of the M2a- Taper™ Hip System

Official Title
-----------------
M2a- Taper™ Hip System Prospective Data Collection

Conditions
-----------------
Non-inflammatory Degenerative Joint Disease, Osteoarthritis, Avascular Necrosis

Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: Patients having primary cemented or cementless total hip replacement for non-inflammatory degenerative joint disease (NIDJD), or any of its composite diagnoses of: Osteoarthritis, Avascular Necrosis, Traumatic arthritis, Subcapital fracture, Legg Perthes, Slipped Capital Epiphysis, Fracture of the pelvis, Diastrophic Variant Patients with full skeletal maturity. Patients undergoing unilateral total hip arthroplasty or bilateral total hip arthroplasty, either staged or simultaneously. Patients of all races and gender. Patients who are able to follow postoperative care instructions. Patients who are able and willing to return for follow-up evaluations. Patients have a preoperative total Harris Hip Score less than 70 with at least moderate pain. Exclusion Criteria Patients diagnosed with inflammatory degenerative arthritis (IDJD) to include the following composite diagnoses: rheumatoid arthritis, systemic lupus erythematous, pigmented villonodular synovitis, juvenile rheumatoid arthritis and other arthritic processes of inflammatory or autoimmune etiology. Patients less than 18 years. Patients with the presence of a previous prosthetic hip replacement device (any type, including surface replacement arthroplasty, endoprosthesis, etc.) in the hip joint to be operated. Patients with previous Girdlestone procedures. Patients with above the knee amputation of the contralateral and/or ipsilateral leg. Patients with osteoporosis, or marked bone loss which would preclude proper fixation of the prosthesis. Patients who are pregnant. Patients with an active or suspected infection in or around the hip. Patients with Parkinson's disease. Patients with vascular insufficiency, muscular atrophy, or neuromuscular disease in the affected limb. Patients with severe instability or deformity of the ligaments and/or surrounding soft tissue which would prelude stability of the prosthesis. Patients with a highly communicable disease or diseases that may limit follow-up (e.g. immuno-compromised conditions, hepatitis, active tuberculosis, neoplastic disease, etc.). Patients unwilling or unable to comply with a rehabilitation program for a cemented or cementless total hip replacement or who indicate difficulty or inability to return for follow-up visits prescribed by the study protocol. Patients with previous hip surgery or conditions that may interfere with the total hip replacement's survival or outcome, e.g., Paget's disease, Charcot's disease, severe osteoporosis compromising bone stock (Dorr type C bone). Patients who qualify for inclusion in the study, but refuse consent to participate in the study. Patients with a fused hip. Patients who have had a total hip arthroplasty on the contralateral hip within the last year.

Ages Eligible for Study
-----------------
Minimum Age: 18 Years

Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
No

Study Plan
=================
How is the study designed?
-----------------

Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| M2a- Taper™ Hip System<br>M2a- Taper™ Hip System | |

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Harris Hip Score |  | Postop, 12 weeks, 1 year, 3 years, 5 years | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Incidence of revisions and removals |  | Any time | 

 Terms related to the study
=================
Keywords Provided by Centre Hospitalier Valida
-----------------
Hip arthroplasty