Safety and Effectiveness of the HIT Reverse HRS

Study Overview
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Brief Summary
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The purpose of this study is to determine if the use of the HIT Reverse Hip Replacement System is safe and effective in patients undergoing total hip replacement. We will determine whether it is safe and effective by comparing it to the control devices.

Detailed Description
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This is a randomized, controlled, multi-center clinical trial. Subjects meeting inclusion and exclusion criteria will be recruited from patients undergoing primary THA at up to 20 investigational sites. Subjects in the Experimental Arm will receive the Investigational Device. Subjects in the Control Arm will receive one of the already-marketed semi- constrained uncemented hip systems using a metal-on-highly-cross-linked polyethylene (XLPE) or ceramic-on-XLPE bearing combination. The following hip systems will be eligible for subjects in the Control Arm: DePuy Synthes Corail® Total Hip System in combination with Pinnacle® Complete Acetabular Hip System; Zimmer Biomet Taperloc® Complete Hip System in combination with G7® Acetabular System; Stryker Accolade® II femoral stem in combination with Stryker Trident® II acetabular cup; Smith & Nephew Anthology® Total Hip System in combination with R3® Acetabular System. Surgery, post-surgical care, and rehabilitation will be per standard of care (SOC) for both arms.

Official Title
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Safety and Effectiveness of the Hip Innovation Technology Reverse Hip Replacement System in Primary Total Hip Arthroplasty: A Pivotal Study

Conditions
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Degenerative Joint Disease, Osteoarthritis, Hip, Avascular Necrosis of Hip, Traumatic Arthropathy-Hip

Intervention / Treatment
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* Device: Hip Innovation Technology Reverse Hip Replacement System
* Device: Already-marketed semi-constrained uncemented hip systems using a metal-on-XLPE or ceramic-on-XLPE bearing combination.


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patient requires primary THA due to NIDJD or any of its composite diagnoses such as osteoarthritis, avascular necrosis, posttraumatic arthritis, slipped capital epiphysis, fracture of the pelvis, and diastrophic variant requiring unilateral primary THA. Patient is between 50 (inclusive) and 75 (inclusive) years of age at the time of enrollment. Patient has preoperative medical clearance and is free from or treated for medical conditions that would pose excessive operative risk. Patient has a signed and dated Informed Consent Form (ICF). Patient is willing and able to participate in required follow-up visits at the investigational site and to complete study procedures and questionnaires. Exclusion Criteria: Patient has received earlier THA, hemi-arthroplasty, or fusion in the contralateral hip in the last 24 months. Patient has received earlier THA, hemi-arthroplasty, or fusion in the contralateral hip more than 24 months ago and has a contralateral hip-specific pain rating of ≥2 on a Numeric Rating Scale 0-10. Patient needs bilateral hip replacement or has a planned THA on the contralateral hip joint in the next 24 months. Patient needs knee arthroplasty or has a planned total knee arthroplasty in the next 24 months. Patient has a known allergy to titanium and/or XLPE. Patient has known metal sensitivities to cobalt chromium (CoCr). Patient has a history of septic arthritis in the index joint. Patient has insufficient acetabular or femoral bone stock in which good anchorage of the implants is unlikely or impossible. Patient has total or partial absence of the muscular or ligamentous apparatus. Patient has known moderate to severe renal insufficiency. Patient has vascular insufficiency, muscular atrophy, or neuromuscular disease in either leg (based on the Investigator's judgment). Patient has a deformity of the affected limb or significant anatomic variance of the affected hip. Patient has an active malignancy or history of invasive malignancy within the last 5 years, except for superficial basal cell carcinoma or squamous cell carcinoma of the skin that has been definitively treated. Patients with carcinoma in situ of the uterine cervix definitively treated more than 1 year prior to enrollment may enter the study. Patient has Paget's disease, Charcot-Marie-Tooth disease, or osteomalacia. Patient has an inflammatory DJD including any of its composite diagnoses: rheumatoid arthritis, systemic lupus erythematosus, pigmented villonodular synovitis, juvenile rheumatoid arthritis, and other arthritic processes of inflammatory or autoimmune etiology. Patient has any condition that would interfere with self-assessment of pain, function, or quality of life (QoL) required for patient-reported outcomes during the study (based on the Investigator's judgment). Patient has a Body Mass Index (BMI) of 40 or higher. Patient has an active infection (e.g., hepatitis, Acquired Immune Deficiency Syndrome (AIDS), AIDS-related Complex (ARC)) that is systemic or at the site of the intended surgery. Patient is currently participating in any investigational study not related to this study's preoperative or postoperative care. Patient is currently pregnant or is planning to become pregnant during the study. Patient is a competitive or professional athlete.

Ages Eligible for Study
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Minimum Age: 50 Years
Maximum Age: 75 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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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Experimental Arm - HIT Reverse HRS<br>Subjects in the Experimental Arm will receive the HIT Reverse HRS Investigational Device. Implantation of the Investigational Device is performed using standard surgical procedures for THA, as described in the Instructions for Use (IFU). The control hip systems will be implanted in accordance with their respective IFU, which are also in line with standard surgical approaches for THA. | Device: Hip Innovation Technology Reverse Hip Replacement System<br>* Implantation of the Investigational Device is performed using standard surgical procedures for THA, as described in the Instructions for Use (IFU). The control hip systems will be implanted in accordance with their respective IFU, which are also in line with standard surgical approaches for THA.<br>* Other names: HIT Reverse HRS;|
| Active Comparator: Control Arm<br>Subjects in the Control Arm will receive one of the already-marketed semi- constrained uncemented hip systems using a metal-on-highly-cross-linked polyethylene (XLPE) or ceramic-on-XLPE bearing combination. | Device: Already-marketed semi-constrained uncemented hip systems using a metal-on-XLPE or ceramic-on-XLPE bearing combination.<br>* Control Arm subjects will receive one of the already-marketed semi-constrained uncemented hip systems using a metal-on-XLPE or ceramic-on-XLPE bearing combination. DePuy Synthes Corail® Total Hip System in combination with Pinnacle® Complete Acetabular Hip System. Zimmer Biomet Taperloc® Complete Hip System in combination with G7® Acetabular System. Stryker Accolade® II femoral stem in combination with Stryker Trident® II acetabular cup. Smith & Nephew Anthology® Total Hip System in combination with R3® Acetabular System.<br>* Other names: Smith & Nephew Anthology® Total Hip System in combination with R3® Acetabular System.;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| OHS of 36 or more at the 2-year follow-up visit | The Oxford Hip Score (OHS) is a 12-item patient-reported outcome measure designed and developed to assess function and pain in patients undergoing hip replacement surgery. It ranges from 0 (poor) to 48 (best). | 24 months | 
| Change in OHS of 12 or more at the 2-year follow-up visit compared to baseline. | The Oxford Hip Score (OHS) is a 12-item patient-reported outcome measure designed and developed to assess function and pain in patients undergoing hip replacement surgery. It ranges from 0 (poor) to 48 (best). | 24 months | 
| Radiologic success at the 2-year follow-up | Defined as No radiolucencies greater than 2 mm in 50% or more of the cup or stem zones; No femoral or acetabular subsidence greater than or equal to 5 mm from baseline; No acetabular cup inclination change greater than 4 degrees from baseline. | 24 months | 
| Absence of revision at the 2-year follow-up visit | No reoperations that led to removal or replacement of any of the acetabular or femoral components. | 24 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in OHS compared to baseline at all follow-up visits. | The Oxford Hip Score (OHS) is a 12-item patient-reported outcome measure designed and developed to assess function and pain in patients undergoing hip replacement surgery. It ranges from 0 (poor) to 48 (best). | 24 months | 
| Change in HHS compared to baseline at all follow-up visits. | The Harris Hip Score (HHS) is a clinician-based 10-item questionnaire used to evaluate the results of hip surgery. It is comprised of 4 sub-sections yielding a maximum possible score of 100 points collectively, including pain (44 points), function (47 points), absence of deformity (4 points), and range of motion (5 points). Measured as Cohen's effect size, the improvements of THA are in the range of 3 and higher (Singh et al., 2016). The traditional categorization of HHS is: < 70, poor; 70-79, fair; 80-89, good; and 90-100, excellent. | 24 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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total hip arthroplasty