Ceramic on Metal Total Hip Replacement System IDE: A Non-Randomized, Multi-center, Historically Controlled Safety and Efficacy Study (Protocol Number:06-LJH-002)
Overview
- Phase
- Phase 4
- Intervention
- Not specified
- Conditions
- Total Hip Replacement System
- Sponsor
- MicroPort Orthopedics Inc.
- Enrollment
- 253
- Locations
- 1
- Primary Endpoint
- Primary Endpoint/Measures: Success at 24 Months
- Status
- Terminated
- Last Updated
- 10 years ago
Overview
Brief Summary
The purpose of this study is to demonstrate non-inferiority of the Ceramic on Metal Total Hip when compared to a TRANSCEND® historical control group of patients with primary total hip replacement.
Detailed Description
This investigational device study is a non-randomized, non-inferiority, multi-center, historically controlled study. The primary objective will be evaluated at the primary endpoint (24 months) by the primary efficacy and safety measures that define patient success. The proportion of patient success will determine whether the primary objective has been met (study success). The investigational device will be compared to a historical control comprised of patients from the TRANSCEND® Ceramic on Ceramic IDE study. This comparison will be made using all primary and secondary measures. However, only primary measures will be used to determine study success.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Must be 18 years of age or older at the time of enrollment,
- •Patient is skeletally mature,
- •Evidence of a signed and dated informed consent document indicating that the patient has been informed of all pertinent aspects of the study,
- •Patient agrees to comply with this protocol, including participating in required follow-up visits at the investigational site and completing study questionnaires, (i.e. patient's reasonable driving distance to assure study follow-up and completion)
- •Investigator determines patient is a suitable candidate for primary total hip replacement,
- •Body Mass Index (BMI) of \<40,
- •Preoperative Harris Hip Score (HHS) \< 70 points as calculated on the Pre-screening Qualification Form and verified by the Sponsor,
- •Have a diagnosis of degenerative joint disease of the hip.
Exclusion Criteria
- •Previous total hip replacement, hemi-arthroplasty, or fusion on the ipsilateral side,
- •Patients with a previous Girdlestone procedure,
- •Patient has a known metal allergy to any component of the investigational device (e.g.cobalt, chromium, titanium or ceramics),
- •Patient has had a total knee arthroplasty of either leg,
- •Patient has vascular insufficiency, muscular atrophy, or neuromuscular disease in the affected limb (based on the Investigator's discretion),
- •Patients with congenital disorder or deformity not adequately addressed by hip replacement or has sufficient anatomic variance or remodeling of the hip joint that may place the patient at risk for mechanical failure or that requires a structural bone graft (based on the Investigator's discretion),
- •Patients with severe instability or deformity of the ligaments or surrounding soft tissues that would preclude stability of the implant (based on the Investigator's discretion),
- •Patients with Charcot or neuropathic arthropathy, or neuromuscular disease or any other condition that would interfere with patient self-assessment or pain, the function or quality of life required for patient reported outcomes during the study (based on the Investigator's discretion),
- •Patient, male or postmenopausal female, with a history of metabolic bone disease, as defined by the following:
- •Osteoporosis where the patient is currently taking prescription medications that increase bone-mineral density (e.g. Fosamax, Didronel), or
Outcomes
Primary Outcomes
Primary Endpoint/Measures: Success at 24 Months
Time Frame: 24 Month
The patient success definition is measured at the 24 month interval by the following: * Harris Hip Score (HHS) of \> 80 • \< 2mm radiolucency (width) in any Gruen (stem) or DeLee/Charnley (cup) zone and no more than mild pain. * No revision or removal of any part of the device for aseptic reasons prior to or on day 730 following the index surgical procedure. A patient must meet all three criteria in the definition to be considered a success. A patient who does not meet all three criteria will be deemed a failure. The Harris hip score, is used to measure the outcome of total hip arthroplasty. Eight sections on the HIP are rated by the patient: pain, distance walked, activities, public transportation, support, limp, stairs and sitting. Total scores are out of 100 and grouped as follows: 90 - 100 Excellent,80 - 90 Good,70 - 79 Fair,60 - 69 Poor.\< 60 Failed.Any score above 60 is acceptable, although the higher the score, the better the patient's overall adjustment after the surgery
Secondary Outcomes
- Metal Ion Analysis; Unilateral Only; Serum Chromium(24 months)
- Metal Ion Analysis (Unilateral Only):Serum Cobalt(24 months)
- WOMAC Raw Total Score(24 months)
- The Secondary Measures of the UCLA Functional Assessments(24 months)