The term "double-jointed" is a common misconception and does not accurately describe any underlying anatomical condition. The true term is "hypermobility," which refers to the ability of a joint to move beyond its normal range of motion. This condition is usually inherited and is more common in women than men.

Hypermobility can affect any joint in the body, but it is most commonly seen in the fingers, wrists, elbows, shoulders, knees, and ankles. People with hypermobility can often bend their joints in ways that most people cannot, such as bending their fingers completely back on themselves or bending their elbows all the way around.

Hypermobility can be a harmless condition, but it can also lead to problems such as joint instability, pain, and dislocations. In some cases, hypermobility can also lead to early-onset arthritis.

If you think you may be hypermobile, it is important to see a doctor to rule out any underlying medical conditions. Your doctor may also recommend exercises to help strengthen your muscles and support your joints.