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Diagnostic Arthroscopy
An arthroscopy uses a small camera inserted through a tiny cut to look inside a joint, such as the knee or shoulder, and can also be used to treat problems.
Quick answer
Diagnostic Arthroscopy: what it is and what the results mean
An arthroscopy is a keyhole procedure in which an arthroscope — a thin tube with a camera and light — is passed into a joint through a small incision. It lets a surgeon see the inside of the joint on a screen and, if needed, carry out repairs.
- Why it is done: It is used to investigate and treat joint problems such as damaged cartilage, torn ligaments, loose fragments or inflammation, most commonly in the knee, shoulder, hip, wrist, ankle or elbow, when scans and examination do not give a full answer.
- Understanding results: The surgeon can usually explain what was found and any repair done soon after you wake, sometimes with photos.
What it is
An arthroscopy is a keyhole procedure in which an arthroscope — a thin tube with a camera and light — is passed into a joint through a small incision. It lets a surgeon see the inside of the joint on a screen and, if needed, carry out repairs.
Why it is done
It is used to investigate and treat joint problems such as damaged cartilage, torn ligaments, loose fragments or inflammation, most commonly in the knee, shoulder, hip, wrist, ankle or elbow, when scans and examination do not give a full answer.
What to expect
It is usually done under general or regional anaesthetic. The surgeon makes one or more small cuts, fills the joint with fluid and inserts the camera and instruments. Many arthroscopies are done as day cases lasting 30–60 minutes.
Understanding the results
The surgeon can usually explain what was found and any repair done soon after you wake, sometimes with photos. Findings guide rehabilitation and whether further treatment is needed.
Good to know
Risks and limitations
As an operation, it carries small risks including infection, bleeding, blood clots, joint stiffness and, rarely, nerve or blood vessel injury. Modern imaging (MRI) means fewer arthroscopies are now done purely for diagnosis.
Education and reference only. This explains the test in general terms and is not medical advice. Always follow the specific instructions from the team arranging your test, and discuss your results with your clinician.
Answers
Diagnostic Arthroscopy: frequently asked questions
How long does it take to recover from a knee arthroscopy?
Simple diagnostic or minor procedures often allow walking within days and return to normal activities over a few weeks, but recovery depends on what was done. Physiotherapy is often part of getting back to full function.
Why have an arthroscopy if I have already had an MRI?
An MRI shows the joint in detail but an arthroscopy allows the surgeon to see and treat problems directly. It is now used more for treatment than for diagnosis alone.
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Sources
Where this is drawn from
- NHS — Tests and treatments
- NICE — diagnostic guidance
- Relevant royal college / professional body
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