If you're experiencing knee pain when walking, getting up, or sitting down, this Oxford Knee Score (OKS) calculator can help. It measures your knee pain and how well your knee has been functioning over the past 4 weeks. You can also use it to track changes before and after treatment, (e.g., physiotherapy, injections, or a total knee replacement).
Recent History
Disclaimer: This tool is for informational purposes only and does not constitute a medical diagnosis. Consult your GP or orthopaedic surgeon for clinical advice.
Understanding Your Oxford Knee Score (OKS)
The Oxford Knee Score is a validated 12-item patient-reported outcome measure (PROM) designed to capture how your knee has affected pain and everyday function over the last 4 weeks. Clinicians across the UK commonly use it in NHS and private settings to support assessment and to track change after treatment (such as physiotherapy or total knee replacement).
Interpreting the Results
The modern total score runs from 0 (worst) to 48 (best). Lower scores usually suggest more difficulty with daily activities and more symptom impact. Your result is a guide. It does not replace clinical assessment.
- 0–19: Severe symptoms
- 20–29: Moderate to severe symptoms
- 30–39: Mild to moderate symptoms
- 40–48: Satisfactory knee function
Why Track Your Score?
Because the questions focus on the last 4 weeks, many services review scores monthly. Tracking helps you see trends over time, and it can give you a simple summary to discuss with your GP, physiotherapist, or orthopaedic team. Especially if your symptoms change after treatment.
Frequently Asked Questions
What is the difference between the 0–48 and 12–60 scale?
Most services now use 0–48, where 48 is the best score. Some older systems use 12–60, where 12 is the best score. This tool can show the equivalent “old scale” score so you can compare with older paperwork.
How often should I check my score?
The score reflects the last 4 weeks, so checking about once a month is a sensible approach. If you check too often, day-to-day ups and downs can look like “changes” when they may not be meaningful.
What is a meaningful change in score?
In research and clinical use, a change of roughly 5–9 points is often used as a guide to a noticeable difference. Thresholds vary by setting and patient group, so treat this as a rule of thumb rather than a strict cut-off.
Reference: Dawson J, Fitzpatrick R, Murray D, Carr A. Questionnaire on the perceptions of patients about total knee replacement. J Bone Joint Surg Br. 1998;80(1):63–69.
This online tool is an unofficial implementation for self-monitoring purposes. The Oxford Knee Score is copyright Oxford University Innovation.