Keyhole surgery is surgery performed with thin instruments through two or more tiny cuts, or portals.

arthroscopy
arthroscopy view of normal cartilage

 

Keyhole surgery of a joint is called arthroscopy

The word 'arthro' implies 'joint', so arthroscopy is keyhole surgery where one uses narrow instruments to look into a joint via a tiny incision or portal, and the image is relayed onto a monitor in front of the surgeon's head.

Synonyms: 
Arthroscopy
Arthroscopic surgery
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Dr Sheila Strover (Editor)
BSc (Hons), MB BCh, MBA

See biography...

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