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Trial details imported from ClinicalTrials.gov

For full trial details, please see the original record at https://clinicaltrials.gov/study/NCT02650284




Registration number
NCT02650284
Ethics application status
Date submitted
6/01/2016
Date registered
8/01/2016
Date last updated
29/06/2022

Titles & IDs
Public title
A Trial Evaluating TKR Compared to BKR Performed Using Stryker's Mako Robot
Scientific title
A Prospective, Randomised Controlled Trial Evaluating Total Knee Replacement With the Stryker Triathlon Primary Total Knee System Performed Using Stryker's Robotic-arm Assisted Surgery System, Mako, Compared to Bicompartmental Knee Replacement With Restoris MCK Multicompartmental Knee System Performed Using Stryker's Robotic-arm Assisted Surgery System, Mako
Secondary ID [1] 0 0
MAKORCT-15
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Non-inflammatory Degenerative Joint Disease 0 0
Condition category
Condition code
Musculoskeletal 0 0 0 0
Other muscular and skeletal disorders
Musculoskeletal 0 0 0 0
Osteoarthritis

Intervention/exposure
Study type
Interventional
Description of intervention(s) / exposure
Treatment: Devices - Stryker Triathlon Primary Total Knee System
Treatment: Devices - Restoris MCK Multicompartmental Knee System

Other: Bicompartmental Knee Replacement (BKR) - Receiving Restoris MCK Multicompartmental Knee System for Bicompartmental Knee Replacement (BKR). Surgery performed using Stryker's robotic-arm assisted surgery system Mako

Other: Total Knee Replacement (TKR) - Receiving Stryker Triathlon Primary Total Knee System for Total Knee Replacement. Surgery performed using Stryker's robotic-arm assisted surgery system Mako


Treatment: Devices: Stryker Triathlon Primary Total Knee System
Total Knee Replacement

Treatment: Devices: Restoris MCK Multicompartmental Knee System
Bicompartmental Knee Replacement
Intervention code [1] 0 0
Treatment: Devices
Comparator / control treatment
Control group

Outcomes
Primary outcome [1] 0 0
Oxford Knee Score
Assessment method [1] 0 0
Comparing clinical outcomes using the Oxford Knee Score. The OKS is a participant completed 12 question form on activities of daily living that assess function and pain. Scores can range from 0 to 48 with lower scores indicating a poor outcome and higher scores indicating a more satisfactory joint outcome.
Timepoint [1] 0 0
pre-op, 6 weeks, 3 months, 12 months, 24 months
Secondary outcome [1] 0 0
Health Related Quality of Life EQ-5D
Assessment method [1] 0 0
Comparing functional and clinical outcomes using the EQ-5D. The EQ-5D-3L descriptive system comprises the following 5 dimensions: mobility, self-care, usual activities, pain/discomfort and anxiety/depression. Each dimension has 3 levels: no problems, some problems, extreme problems. The participant is asked to indicate his/her health state by indicating the most appropriate level for each of the 5 dimensions. Responses may be converted into a single summary index by applying a formula that essentially attaches values (also called weights) to each of the levels in each dimension. Index values range from 0-1, with 1 being representing "full health". The EQ VAS records the participant's self-rated health on a vertical, visual analogue scale where the endpoints are labelled from 100 ='Best imaginable health state' to 0= 'Worst imaginable health state'. The VAS scales represents health on the day.
Timepoint [1] 0 0
24 months/ 2years
Secondary outcome [2] 0 0
VAS Pain
Assessment method [2] 0 0
Comparing functional and clinical outcomes using the VAS pain. Pain at rest and pain during mobilization are measured using a 10 centimeter Visual Analogue Scale (VAS). Participants are asked to indicate their level of pain with 0 being no pain and 100 being the worst pain.
Timepoint [2] 0 0
24 months/ 2years
Secondary outcome [3] 0 0
New Knee Society Score (KSS)
Assessment method [3] 0 0
Comparing functional and clinical outcomes using the KSS. The Knee Society Clinical Rating System is comprised of two distinct sub-scores: one for pain, range of motion (ROM) and joint stability, and one for functional parameters. Sub-scores range from a minimum score of 0 to a maximum of 100 points. Although the specific scores are not distinguished as "excellent," "good," "fair," or "poor," a higher value represents a better outcome.
Timepoint [3] 0 0
24 months/ 2years
Secondary outcome [4] 0 0
Forgotten Joint Score (FJS)
Assessment method [4] 0 0
Comparing functional and clinical outcomes using the FJS. The Forgotten Joint Score (FJS) is a 12 question form that asks the patient their level of awareness of their artificial joint in 12 scenarios commonly encountered in daily life. Scores can range from 0 to 100 with a higher score indicating a better outcome (high degree of forgetting the joint in everyday life).
Timepoint [4] 0 0
24 months/ 2years
Secondary outcome [5] 0 0
Incidence of Loosening, Reoperation and Revision
Assessment method [5] 0 0
To compare incidence of loosening, reoperation and revision rates. The incidence (ie number of participants who experienced lossening, reoperation or revision) will be counted and presented as a whole number or percentage of the total number of patients, however they will be identified from analysing Xrays and checking Serious Adverse Event/ Adverse Event reports.
Timepoint [5] 0 0
6 weeks, 3 months, 12 months, 24 months
Secondary outcome [6] 0 0
Length of Hospital Stay
Assessment method [6] 0 0
To compare length of hospital stay between the two arms of the study
Timepoint [6] 0 0
6 weeks

Eligibility
Key inclusion criteria
1. The patient is a suitable candidate for a Bicompartmental Knee Replacement and has moderate to severe patellofemoral wear and medial compartment wear (surgeons discretion)
2. The patient has no fixed flexion greater than 10 degrees.
3. The patient has maximal flexion greater than 100 degrees
4. The patient has a passively correctable varus deformity
5. The patient has a functionally Intact Anterior Cruciate Ligament (ACL.)
6. The patient has no significant patellofemoral malalignment
7. The patient has negligible lateral compartment degeneration with no appreciable loss of cartilage height (surgeon's discretion).
8. The patient has pain that is not localised to the medial compartment only
9. The patient is a male or non-pregnant female.
10. The patient has signed the study specific, Human Research Ethics Committee (HREC)- approved Informed Consent document and is willing and able to comply with the specified pre-operative and post-operative clinical and radiographic evaluations
Minimum age
18 Years
Maximum age
No limit
Sex
Both males and females
Can healthy volunteers participate?
No
Key exclusion criteria
1. The patient has a clinically deficient ACL and cruciate and collateral ligament insufficiency on CT arthrogram.
2. The patient is undergoing revision surgery
3. The patient has greater than 10° of hyperextension, greater than 10° of varus or valgus deformity, greater than 10° Flexion Contracture
4. The patient has active, local infection or previous intra-articular infection
5. The patient has skeletal immaturity
6. The patient is without sufficient bone stock to allow appropriate insertion and fixation of the prosthesis
7. The patient's weight, age or activity level might cause extreme loads and early failure of the system (surgeons discretion).
8. The patient has a systemic or local condition that would limit the ability to assess the performance of the device e.g. neuromuscular or neurosensory deficiency, disorder leading to progressive bone deterioration (including rheumatoid arthritis and osteoporosis), or patient is immunologically suppressed.
9. Patient has a cognitive impairment, an intellectual disability or a mental illness that is considered by the investigator to inhibit the patient's capacity to consent to research and the ability to participate in it
10. Patients with tricompartmental disease are contraindicated from the study

Study design
Purpose of the study
Treatment
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Masking / blinding
Open (masking not used)
Who is / are masked / blinded?



Intervention assignment
Parallel
Other design features
Phase
Not applicable
Type of endpoint/s
Statistical methods / analysis

Recruitment
Recruitment status
Stopped early
Data analysis
Reason for early stopping/withdrawal
Other reasons
Date of first participant enrolment
Anticipated
Actual
12/08/2015
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
Actual
6/03/2019
Sample size
Target
Accrual to date
Final
18
Recruitment in Australia
Recruitment state(s)
WA
Recruitment hospital [1] 0 0
Perth Hip & Knee - Subiaco
Recruitment postcode(s) [1] 0 0
6008 - Subiaco

Funding & Sponsors
Primary sponsor type
Commercial sector/industry
Name
Stryker South Pacific
Country

Ethics approval
Ethics application status

Summary
Brief summary
Trial website
Public notes

Contacts
Principal investigator
Name 0 0
Gavin Clark, Dr
Address 0 0
Perth Hip and Knee and St John of God Hospital
Country 0 0
Phone 0 0
Email 0 0
Contact person for public queries
Name 0 0
Address 0 0
Country 0 0
Phone 0 0
Email 0 0
Contact person for scientific queries

Data sharing statement


What supporting documents are/will be available?



Results publications and other study-related documents

No documents have been uploaded by study researchers.

Results are available at https://clinicaltrials.gov/study/NCT02650284