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RecruitingNCT07879014QKPUpdated Oct 16, 2026

Evaluating the Efficacy of a "Quiet Knee Protocol" in Primary Total Knee Arthroplasty (TKA): A Prospective Randomized Study

An interventional study of Quiet Knee Protocol and Post Operative Standard of Care in Rehabilitation Exercise, sponsored by Mayo Clinic. Recruiting at 2 sites in United States. Open to participants aged 18 Years to 100 Years. Per ClinicalTrials.gov, last updated 2026-10-16.

Sponsored by Mayo Clinic · Not applicable, Interventional, and Prevention

Updated Oct 16, 2026Newly registeredGo to Updates ↓
Phase
Not applicable
Study type
Interventional
Enrollment
170
Allocation
Randomized
Ages
18 Years to 100 Years
Sex
All
01

Study summary

The goal of this randomized clinical trial is to access the following:

  1. Compare the effectiveness of the QKP versus a standard rehabilitation protocol in improving postoperative pain control, ROM, and functional recovery following primary TKA.
  2. Assess whether the QKP reduces reliance on formal PT services.
  3. Evaluate the impact of QKP on secondary outcomes, including opioid consumption, manipulation under anesthesia (MUA) rates, and patient satisfaction scores.

Patients will be randomized into either a standard of care arm vs QKP rehabilitation protocol arm. Each group will answer questionnaires and be followed for 12 months.

02

Conditions studied

  • Rehabilitation Exercise

Keywords

  • Quiet Knee Protocol
  • Orthopedic Surgery
  • Knee Replacement
03

In context

Lead sponsor

Mayo Clinic is the lead sponsor of 3,263 studies on the registry; 670 are open to participants now.

Of its 450 completed or terminated interventional studies of FDA-regulated products, 318 (71%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 100 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Adults (≥18 years) undergoing unilateral primary TKA for osteoarthritis
  • Willingness to adhere to the assigned rehabilitation protocol
  • Ability to provide informed consent

Exclusion criteria

Exclusion Criteria:

  • Revision TKA or bilateral procedures
  • Preexisting neuromuscular disorders affecting mobility
  • Prior knee surgery within 12 months
  • No Joint Hardware
  • Agree to avoid plane trips post-surgery for 2 weeks
  • Patients with 100-degree flexion contracture
  • Pregnant subjects
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
170 participants (estimated)

Study arms

  • Active comparator
    Standard of Care Group

    Standard of Care arm will receive physical rehabilitation days after surgery which involves moving the limb through range of motion. This is the normal standard of care for post-operative knee surgery patients.

    Other: Post Operative Standard of Care

  • Experimental
    Quiet Knee Protocol

    Quiet Knee Protocol arm will receive no physical rehabilitation after surgery for two weeks. After two weeks, individuals will begin physical rehabiliatation with a physical therapist.

    Other: Quiet Knee Protocol

Interventions

  • OtherQuiet Knee Protocol

    Quiet Knee Protocol arm will receive no physical rehabilitation from a physical therapist after surgery for two weeks. Patients in this group will only perform active range of motion post-operatively before starting physical rehabilitation.

  • OtherPost Operative Standard of Care

    Standard of Care arm will receive physical rehabilitation days after surgery which involves moving the limb through range of motion. This is the normal standard of care for post-operative knee surgery patients.

06

What researchers measure

Primary outcomes

  1. Range of Motion (PROM)

    The primary endpoint of this study postoperative range of motion (flexion and extension) at 6 weeks following TKA. This will be measured by trained individuals (Investigator, trained study staff, physical therapist) with the use of a goniometer.

    Time frame: Preoperative, 2 weeks, 6 weeks, 3 months, and 1 year post-operatively

Secondary outcomes

  1. Incidence of Manipulation Under Anesthesia

    Incidence of MUA will be recorded

    Time frame: Post-Operative up to 1 year post op

  2. Activity levels and functional recovery scores

    KOOS Jr questionnaire will be completed to measure activity levels and functional recovery scores

    Time frame: Preoperative, 2 weeks, 6 weeks, 3 months, and 1 year post-operatively

  3. PT utilization

    PT utilization will be recorded on a weekly basis.

    Time frame: 2 weeks, 6 weeks, 3 months, and 1 year post-operatively

  4. Knee Circumference

    Knee Circumference will be measured by Investigator, trained study staff, physical therapist.

    Time frame: Preoperative, 2 weeks, and 6 weeks

  5. Narcotic consumption

    Narcotic consumption will be recorded

    Time frame: 2 weeks, 6 weeks, 3 months, and 1 year post-operatively

  6. Patient-reported pain scores

    Patient-reported pain scores (Visual Analog Scale) will be completed.

    Time frame: Preoperative, 2 weeks, 6 weeks, 3 months, and 1 year post-operatively

  7. Patient-reported satisfaction with rehabilitation

    Patient-reported satisfaction with rehabilitation questionnaire will be completed.

    Time frame: 3 months post-operatively

07

Study locations

1 of 2 sites recruiting
  • Mayo Clinic
    Jacksonville, Florida 32224, United States
    • Lauren Evans, DPT · Contact · Evans.Lauren2@mayo.edu · 904-953-5416
    • Niall Cochrane, MD · Principal investigator
    • Bryan Springer, MD · Sub investigator
    Recruiting
  • Hospital for Special Surgery
    New York, New York 10021, United States
    Not yet recruiting
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Start is estimated for Sep 2026; primary completion for Dec 2029, 39 months later.

How these figures are worked out, and which studies are left out of them.

Registered
Oct 11, 2026
First posted
Oct 16, 2026
StartEst.
Sep 2026
Primary completionEst.
Dec 2029
CompletionEst.
Dec 2030
Last update
Oct 16, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Registered
First appeared on the registry. No changes since
Oct 16, 2026
Show all 1 update
  1. Oct 16, 2026
    First appeared on the registry

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07879014
Lead sponsor
Mayo Clinic
Responsible party
Niall Cochrane (Principal Investigator, Mayo Clinic) — Principal investigator
First posted
Oct 16, 2026
Start date
Sep 2026 (estimated)
Primary completion
Dec 2029 (estimated)
Completion
Dec 2030 (estimated)
Last update
Oct 16, 2026

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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