A knee mouse is a loose piece of cartilage floating free in the knee joint - more correctly called a 'loose body'.

loose body in the knee joint
Knee mice can cause giving way, catching or locking in the knee.
Synonyms: 
Loose body
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Common joint surface problems in the knee

A quick overview of the problems one sees in the white joint cartilage at the end of the bones in the knee joint.

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CLINICAL PUBLICATIONS

Arthroscopic removal of loose bodies using the accessory portals in the difficult locations of the knee: a case series and technical note. Chen B, Chen L, Chen H, Yang X, Tie K and Wang H. J Orthop Surg Res. 2018; 13: 258.

See also -


 

eBook - Common Knee Symptoms

Easy-to-read eBook about catching and other common symptoms in the knee.