Knee Osteoarthritis
Conditions
Brief summary
This is a multi-centre single cohort trial of patients undergoing cruciate-retaining total knee arthroplasty with the Advance Porous fixed bearing tibial baseplate and compatible femoral, patellar, and bearing components.
Detailed description
All patients will undergo post-operative model-based RSA to identify migration of the tibial baseplate with respect to the bone as well as migration of the patellar and femoral components with respect to the bone during the first 2 post-operative years. Patient health and functional outcomes will be recorded at pre- and post-operative intervals for all patients. Peri-operative adverse events and other clinical complications will be captured as encountered.
Interventions
DEVICEPOROUS TIBIA BASEPLATE W/ JRNY LOCK
Fixed-bearing POROUS TIBIA BASEPLATE W/ JRNY LOCK and a Legion cruciate-retaining High-Flex or Deep-dish XLPE tibial insert
Sponsors
Canadian Radiostereometric Analysis Network
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
21 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Symptomatic osteoarthritis of the knee indicating primary unilateral total knee arthroplasty * Sufficient ligamentous function to warrant retention of the posterior cruciate ligament * Aged 21 years or older * Patients willing and able to comply with follow-up requirements and self-evaluations * Ability to give informed consent
Exclusion criteria
* Active or prior infection * Medical condition precluding major surgery * Known medical condition limiting patient life expectancy to \< 2 years * Expected to receive contralateral TKA within 1 year * Inflammatory arthropathy * Prior patellectomy * PCL deficiency * Major (\>25 degree) coronal plane deformity * Bilateral coronal plane deformity requiring simultaneous bilateral TKA * Bone defects requiring augments, cones and/or stemmed implants * Body Mass Index greater than 40
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change between 6 months and 1-year post-operative - tibial baseplate stability | 6 Months and 1 Year | Maximum total point motion (MTPM) migration of the POROUS TIBIA BASEPLATE W/ JRNY LOCK between 6 months and 1 year post-operative (mm) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Total MTPM migration of the baseplate at 1 year | 1 Year | Assessment of the stability of the tibial baseplate (mm) |
| Establish the post-operative migration pattern of the patellar and femoral components | 6 Weeks and 6 Months | Assessment of the migration pattern (mm) |
| What is the magnitude of baseplate displacement that results from patient weight-bearing (single leg stance) versus non-weight-bearing at 1-year post-operation? | 1 Year | Assessment of the baseplate displacement differences between standing and supine RSA (mm) |
| European Quality of Life (EQ-5D-5L) | Preoperative, 6 Weeks, 6 Months, 1 Year and 2 Years | EQ5D consists of 5 subscales; Mobility, Self-care, Usual activities, Pain/Discomfort and Anxiety / depression. A health state score is obtained based on the responses from 1-5 in each subscale, from which a single index value is calculated representing patients' overall health state. EQ5D includes a so called EQ VAS score which is the patients' self-rated health on a 20 cm vertical, visual analogue scale with endpoints labelled the best health you can imagine and the worst health you can imagine. |
| Patient-reported Outcome: Oxford Knee Score | Preoperative, 6 Weeks, 6 Months, 1 Year and 2 Years | The Oxford Knee Score (OKS) is a patient self-administered 12-item questionnaire with each question having a Likaert-like response option. Each item is scored from 0 to 4, and the items are summated, with lower total scores indicating poorer performance. The OKS measures pain and general activities of daily living. |
| Change between 1- and 2-years post-operative - tibial baseplate stability | 1 Year and 2 Years | Maximum total point motion (MTPM) migration of the POROUS TIBIA BASEPLATE W/ JRNY LOCK between 1 year and 2 years post-operative (mm) |
| Knee Injury and Osteoarthritis Outcomes Score (KOOS JR.) | Preoperative, 6 Weeks, 6 Months, 1 Year and 2 Years | The KOOS JR. was a participant completed questionnaire that consists of 7 questions from 3 subscales: stiffness (1 question), pain (4 questions), and function in daily living (2 questions). Standardized answer options are given (5 Likert boxes) and each question was assigned a score from none (0) to extreme (4). |
| University of California at Los Angeles (UCLA) Activity Level scale | Preoperative, 6 Weeks, 6 Months, 1 Year and 2 Years | Evaluate and compare the change in UCLA activity score compared to baseline in the study cohort. UCLA activity scores range from 1 to 10, and is a measure of activity with 10 being most active. |
| Pain VAS | Preoperative, 6 Weeks, 6 Months, 1 Year and 2 Years | Evaluate and compare the change from preoperative to 2 years between the study groups timepoints in patient reported satisfaction as measured using the visual analogue scale (VAS) from 0 (No pain) - 100 (Worst pain imaginable) |
| Satisfaction VAS | Preoperative, 6 Months, 1 Year and 2 Years | Evaluate and compare the change from preoperative to 2 years between the study groups timepoints in patient reported pain severity as measured using the visual analogue scale (VAS) from 0 (Unsatisfied) - 100 (Completely satisfied) |
| Patient complications | 6 Weeks, 6 Months, 1 Year and 2 Years | Evaluate the type and frequency of the complications/adverse events. |
| Forgotten Joint Score (FJS) | Preoperative, 6 Weeks, 6 Months, 1 Year and 2 Years | The FJS total score range is 0-100, higher scores indicating the patient is able to forget the joint daily or lower degree of joint awareness. |
Countries
Canada
Outcome results
None listed