A joint is the location at which two or more bones connect. It is a structure where two or more bones combine with each other. Usually, most joints have a capsule of thick, fibrous layer that joins the articulating (meeting) bones together. Additionally, most joints have ligaments that allow joint movements within defined ranges.
Luxation is the complete disruption and dislocation of a joint and occurs due to damage to supporting ligaments around the joints or their complete absence. Partial dislocation of the joint is termed as subluxation and is a milder form of joint luxation.
Common symptoms assoicated with joint luxation include swelling at the affected site, pain, inability to use affected limb, partial weight bearing and lameness.