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Clinical Trials in Canada / NCT03286868
Recruiting Not applicable

Balancing Kinematically Aligned Total Knee Replacements During Total Primary Knee Arthroplasty Using Verasense

NCT03286868 · tracked via the Priya Life Science Canada tracker
Sponsor
Nova Scotia Health Authority
Phase
Not applicable
Started
2018-07-23
Last updated
2025-02-17

Condition(s) studied

Osteo Arthritis Knee

Investigational drug(s) / intervention(s)

Total Knee ArthroplastyTotal Knee Arthroplasty with Verasense sensor

Total Knee Arthroplasty: Total Knee Arthroplasty

Total Knee Arthroplasty with Verasense sensor: Total Knee Arthroplasty with Verasense sensor

Study summary

Total Knee Replacement (TKR) is an operation to help with the pain and decreased function that happens with end stage arthritis of the knee. This operation has been shown to be very successful at relieving pain and improving patient mobility; however, some studies have shown that up to 20% of TKR recipients are not happy with their knee replacement.

All of the reasons why some patients are not pleased with the outcome of surgery are not known, but one of the possible causes is the way the implants are placed, or aligned, during surgery. Most TKRs are aligned in a fashion that the bones in the leg are completely straight after surgery. This is known as mechanically aligning a TKR. A different alignment method known as kinematic alignment respects the natural bow legged or knock kneed alignment of the patient. It is hoped that kinematically aligning a knee replacement will improve how the knee feels to the patient and therefore improve their satisfaction.

Another potential factor affecting the outcomes of TKR is obtaining optimal soft tissue balance. The challenge with balancing a TKR is that traditional operative techniques rely on subjective feel of the knee stability during surgery. The balance or tension in the knee can however be objectively measured using specialized intraoperative pressure sensing devices.

The purpose of this study is to assess the impact of kinematically aligned TKR on the pressures measured by Verasense during total knee replacements. The study will also determine if differences in the pressure measured during TKR surgery impact patient outcomes after surgery.

Eligibility

Sex
ALL
Min age
21 Years
Max age
80 Years
Healthy volunteers
No
Inclusion Criteria: * Symptomatic arthritis of the knee indicating primary total knee arthroplasty * Between the ages of 21 and 80 inclusive * Patients willing and able to comply with follow-up requirements and self-evaluations * Ability to give informed consent * Varus alignment Exclusion Criteria: * Patients less than 21 years of age, or 81 years of age and older * Unable to provide consent * BMI \>45 * Pregnancy * Patients with inflammatory arthritis, posttraumatic osteoarthritis, post high tibial osteotomy, or arthritis due to sepsis will be excluded. * Active or prior infection * Medical condition precluding major surgery * Severe osteoporosis or osteopenia * Neuromuscular impairment * Significant co-morbidity affecting ability to ambulate * Valgus alignment

Primary outcome measure(s)

  • gait assessment — 2 years
    kinematic gait assessment using KneeKG

Trial sites (1)

FacilityCityRegionStatus
Nova Scotia Health Authority Halifax Nova Scotia Recruiting

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Official registry record

This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.

View NCT03286868 on ClinicalTrials.gov ↗ ← All trials in Canada