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Bone spurs can break off from the larger bone, becoming what doctors call loose bodies. Often bone spurs that have become loose bodies will float in your joint or become embedded in the lining of the joint (synovium).
Loose bodies can drift into the areas in between the bones that make up your joint, getting in the way and causing intermittent locking — a sensation that something is preventing you from moving your joint. This joint locking can come and go as the loose bodies move into and out of the way of your joint.
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