Continuation of Patient Follow-up to 2 Years for the Pinnacle RSA and Pinnacle DM RSA Clinical Trials

Canadian Radiostereometric Analysis Network82 enrolled

Overview

The proposed study is a continuation of two prospective, multi-centre, non-controlled studies of the Pinnacle and Pinnacle Dual Mobility total hip arthroplasty systems, originally initiated by DePuy Synthes (DSJ\_2018\_02 and DJS\_2019\_02, respectively).

The primary study objective is to establish the mean superior migration of the Pinnacle Gription Sector acetabular cup, irrespective of standard or dual mobility articulation, using model-based radiostereometric analysis. As both prior studies utilize the same acetabular component, a combined analysis will be performed with an additional sub-analysis on those with a Pinnacle Dual Mobility system. Additional objectives include comparison of acetabular cup migration between surgical approach groups (posterolateral, direct lateral, direct anterior) at all time points, linear head penetration at 1 and 2 years, as well as functional and health status outcomes. Patients will be followed to the original end point of 2 years post-surgery using the same radiographic and patient-reported outcome measures at the primary studies; Harris Hip Score, Hip Evaluation, HOOS Jr., and Forgotten Joint Score. Results of this study will be published in orthopaedic journals.

Study Type

INTERVENTIONAL

Allocation

NON_RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Enrollment

Conditions

Hip Osteoarthritis

Interventions

Pinnacle Gription Acetabular CupDEVICE

Pinnacle Gription cup with Corail/ACTIS stem

Pinnacle Dual MobilityDEVICE

Bi-Mentum AltrX liner

Eligibility

Sex: ALLMin age: 21 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Individuals who were enrolled on the DSJ\_2018\_02 and DSJ\_2019\_02. Exclusion Criteria: 1. Individuals have active local or systemic infection. 2. Individuals who have loss of musculature, neuromuscular compromise or vascular deficiency in the affected limb rendering the procedure unjustified. 3. Individuals with poor bone quality, such as osteoporosis, where in the surgeon's opinion, there could be considerable migration of the prosthesis or a significant chance of bone fracture and/or the lack of adequate bone to support the implant(s). 4. Individuals with Charcot's or Paget's disease. 5. Individuals who, in the judgement of the investigator, would not be a candidate for protocol allowable components to be used for their THA. 6. Women who are pregnant or lactating. 7. Individuals who have had a contralateral hip that was implanted less than 6 months prior to the time of consent into this study or individuals that expect to have a contralateral hip implanted in the 6 months following the time of consent into this study. Individuals that have amputations in either leg that would impact rehabilitation following surgery. 8. Individuals who are bedridden per the Investigators determination. 9. Individuals that have participated in a clinical investigation with an investigational product (drug or device) in the last three months. 10. Individuals currently involved in any personal injury litigation, medical-legal or worker's compensation claims. 11. Individuals, in the opinion of the Investigator, who are drug or alcohol abusers or have a psychological disorder that could affect their ability to complete patient reported questionnaires or be compliant with follow-up requirements. 12. Individuals diagnosed and taking prescription medications to treat a muscular disorder that limits mobility due to sever stiffness and pain such as fibromyalgia or polymyalgia. 13. Subject has a medical condition with less than 2 years life expectancy. 14. Individual has a BMI \>45 kg/m2. 15. DSJ-2019-02 only: Individuals who require revision arthroplasty and have a well-fixed non-DePuy Synthes femoral stem or a well-fixed DePuy Synthes femoral stem that does not have a polished neck

Locations (2)

Orthopaedic Innovation Centre

Winnipeg, Manitoba, Canada

London Health Sciences Centre

London, Ontario, Canada

Outcomes

Primary Outcomes

Changes in RSA Migrations from baseline(6-week) to 6-month, 1-year and 2-year

Stability over a period of two year measured by migration (mm) with Röntgen Stereometric Analysis

Time frame: Post-op: 6-weeks, 3-months, 6-months, 1-year, 2-year

Secondary Outcomes

Subsidence profiles

Comparing RSA exams at the specified time points to determine relative movement of the device

Time frame: 6-months, 1-year, 2-year

Change of functional outcome over 2 year follow-up period (Harris Hip Score)

The Harris Hip Score (HHS) is a score used in total hip arthroplasty, mainly combining range of motion questions with questions regarding daily life activities. 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, any result \<70 is considered a poor result; The HHS is an outcome measure administered by a qualified health care professional.

Time frame: Preoperative, 6 weeks, 3 months, 6 months, 12 months and 2 years postoperatively

Pain and Function

The Hip Disability and Osteoarthritis Outcome score - joint replacement (HOOS JR) will be used. The HOOS-JR is a joint replacement survey designed to measure pain and function.

Time frame: Preoperative, 6 weeks, 3 months, 6 months, 12 months and 2 years postoperatively

Forgotten Joint Score (FJS)

The FJS total score range is 0-100, higher scores indicating the patient is able to forget the joint daily lower degree of joint awareness.

Time frame: Preoperative, 6 weeks, 3 months, 6 months, 12 months and 2 years postoperatively

Complications

Data from ClinicalTrials.gov

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