Subluxation is when the bones of a joint nearly leave their normal alignment, but then return to a normal position.


The unstable patella - congenital or acquired?

Instability in the patella means that it jumps to the edge or out of the normal track in the femur in which it lies.


An unstable patella needs careful evaluation, so that things are not made worse by inappropriate intervention. This eBook explains the logic of X-ray and other investigations.

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