‹ PATIENT OUTCOMES AND RESULTS
How Dr. Sloan’s total knee replacement patients report their function and pain, from before surgery through long-term recovery.
Knee Function Over Time (KOOS, JR.)
The Knee injury and Osteoarthritis Outcome Score for Joint Replacement asks patients about stiffness, pain and everyday activities such as walking, climbing stairs, kneeling and bending. Scores range from 0 to 100; a higher score means better knee function.
| Time point | Dr. Sloan’s patients | Force Therapeutics network average |
|---|---|---|
| Before Surgery | 55.0 | 50.6 |
| 12 Weeks | 71.2 | 67.9 |
| 6 Months | 76.5 | 73.0 |
| 1 Year | 80.2 | 75.8 |
| 3 Years | 80.7 | 80.6 |
Charts provided by Force Therapeutics
On average, Dr. Sloan’s knee patients improve by 16.2 points within 12 weeks and 25.8 points by three years, with average scores above the network average at every point measured.
Meaningful Improvement at One Year
Researchers use two thresholds to judge whether a change in KOOS, JR. score matters to patients: the minimal clinically important difference (MCID), the smallest improvement patients notice as meaningful, and the substantial clinical benefit (SCB), a larger improvement linked to patients feeling much better. Results include patients who completed the survey both before surgery and at one year.
- MEANINGFUL IMPROVEMENT (MCID): 77% — Of knee replacement patients reached a meaningful improvement in knee function by one year.
- SUBSTANTIAL IMPROVEMENT (SCB): 66% — Of knee replacement patients reached a substantial improvement in knee function by one year.
Charts provided by Force Therapeutics
Pain Relief After Knee Replacement
Patients rate their pain on a scale from 0 (no pain) to 10 (worst pain) throughout recovery. Results reflect 724 total knee replacement patients who had surgery in the last three years.
- AVERAGE REDUCTION IN PAIN: 3.7 points — From an average of 5.3 before surgery to 1.7 at 12 weeks after surgery.
- AVERAGE PAIN AT 12 WEEKS: 1.7 out of 10
Charts provided by Force Therapeutics
Patient Satisfaction
About 90 days after surgery, patients rate how satisfied they are with their procedure on a scale from 1 (very dissatisfied) to 5 (very satisfied). Patients are also asked how prepared they felt for surgery.
- SATISFIED WITH THEIR PROCEDURE: 93.2% — Of knee replacement patients were satisfied or very satisfied, with an average rating of 4.59 out of 5 from 429 patients. Very satisfied — 68.1%; Satisfied — 25.2%.
- PREPARED FOR SURGERY: 98.8% — Of knee replacement patients felt prepared or very prepared for their surgery. Very prepared — 60.2%; Prepared — 38.6%.
Charts provided by Force Therapeutics
Is knee replacement right for you?
Is knee replacement right for you? Dr. Sloan offers partial, total and custom knee replacement as well as revision and complex knee surgery. BOOK AN APPOINTMENT
Strong Joints, Strong Body — Dr. Sloan’s free weekly newsletter
Hip and knee health, bone health, and staying strong after 50 — one plain-English email every Sunday, in about four minutes.
KOOS, JR. scores are all-time averages across Dr. Sloan’s patients who completed each survey, reported through the Force Therapeutics platform as of October 14, 2026. Outcomes data and charts provided by Force Therapeutics. Pain, satisfaction and preparedness results reflect patients who had surgery in the last three years. Meaningful improvement results include patients who completed KOOS, JR. both before surgery and at one year. Satisfaction and preparedness breakdowns show positive responses; 5.1% of knee patients were neutral, 1.6% reported being dissatisfied and 1.2% reported feeling unprepared. Network averages include all organizations using Force Therapeutics. Individual results vary, and past outcomes do not guarantee future results.