Hypermobility

The condition in which a person can move a joint beyond the typical range of extension or flexion for the joint. People who have joint hypermobility are often referred to as being “double jointed.” For example, the elbow joint is normally limited to zero degrees of extension. People with elbow joint hypermobility can often extend the elbow up to ten degrees, which is often thought of as bending the elbow backwards.

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