Free self-assessment
Do I need a joint replacement?
I'm Mr Kozdryk, a consultant hip and knee surgeon. This 12-question assessment takes about 5 minutes. It uses the same validated scoring system the NHS uses to assess patients before and after joint replacement, and it will give you a personalised indication of where you stand. You can read about the score below.
Which joint is troubling you?
For information only. This tool is not a medical diagnosis and does not replace a consultation. If you have sudden severe pain, a hot swollen joint, a fever, or cannot bear weight, seek urgent medical attention.
Your answers stay on your device. All scoring is calculated in your browser. Nothing is stored, sent or linked to you.
Do I need a knee replacement or a hip replacement? About the scores
About the Oxford Knee Score
What it is
The Oxford Knee Score is a 12-question patient-reported outcome measure developed at the University of Oxford. It is used across the NHS as the national outcome measure for knee replacement, and I use it with my own patients before and after surgery.
What it measures
It measures pain and your ability to do everyday activities — washing, dressing, walking, stairs and sleep — over the last 4 weeks. Each answer scores 0 to 4, giving a total out of 48, where 48 is best.
Its limitations
It measures symptoms, not diagnosis. It cannot see inside your knee, it does not replace an examination or X-ray, and a score alone never decides surgery. Think of it as a guide to start a conversation, not a verdict.
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):63–9.
About the Oxford Hip Score
What it is
The Oxford Hip Score is a 12-question patient-reported outcome measure developed at the University of Oxford. It is used across the NHS as the national outcome measure for hip replacement, and I use it with my own patients before and after surgery.
What it measures
It measures pain and your ability to do everyday activities — washing, dressing, walking, stairs and sleep — over the last 4 weeks. Each answer scores 0 to 4, giving a total out of 48, where 48 is best.
Its limitations
It measures symptoms, not diagnosis. It cannot see inside your hip, it does not replace an examination or X-ray, and a score alone never decides surgery. Think of it as a guide to start a conversation, not a verdict.
Dawson J, Fitzpatrick R, Carr A, Murray D. Questionnaire on the perceptions of patients about total hip replacement. J Bone Joint Surg Br. 1996;78(2):185–90.
Common questions
What score means I need a knee replacement?
No single score decides surgery. As a guide, an Oxford Knee Score of 0–19 suggests severe arthritis, where patients usually benefit from joint replacement; 20–29 suggests moderate to severe symptoms worth discussing at a consultation. An examination and X-ray are always needed.
How do I know if I need a hip replacement?
Persistent hip pain that disturbs sleep, limits walking and stairs, and no longer responds to physiotherapy, weight loss or injections is the usual sign. The Oxford Hip Score helps measure how much it affects daily life, but a consultation confirms the diagnosis.
What is the Oxford Knee Score?
A 12-question patient-reported questionnaire developed at the University of Oxford, scored 0–48 (48 is best), used across the NHS to measure knee pain and function before and after knee replacement.
Are my answers stored?
No. All scoring is calculated in your browser. Your answers are not stored, sent anywhere or linked to you.