Oliver Bee RMTRegistered Massage Therapist

Massage therapy · Kitchener–WaterlooBenign Hypermobility Joint Syndrome

Whole body

What It Is

Benign hypermobility joint syndrome is a condition where joints move beyond the normal range expected for a particular joint. It is an older name: the condition was later called joint hypermobility syndrome, and is now usually called hypermobility spectrum disorder (HSD). A closely related condition is hypermobile Ehlers-Danlos syndrome (hEDS); both can cause the same problems and are managed in the same way (Arthritis UK, 2026). Hypermobile joints are sometimes referred to as "loose joints", and people with them may describe themselves as "double-jointed" (NHS, 2023).

It is thought that hypermobility affects about one in five people, and most people who are hypermobile do not have any difficulties (Arthritis UK, 2026). Children are often more hypermobile and may lose this as they grow up (Arthritis UK, 2026). However, some people have ongoing loose ligaments (laxity), leading to long-term problems such as pain, tiredness and joint instability. The condition can be limiting; physical therapists help people develop strategies to increase joint stability, reduce pain and improve function. I can help with this too.

What Is The Cause of Benign Hypermobility Joint Syndrome?

Hypermobility is mainly caused by genetics. It often runs in families, and it cannot be prevented (NHS, 2023; Arthritis UK, 2026). Collagen, an important protein that helps to glue tissues together, is thought to play a key role.

The real issue is the ligament. Ligaments normally support and strengthen the joints. In people with hypermobility, the collagen that strengthens the ligaments is different, faulty or weak, so the ligaments are weak or stretchy and don't hold the joints as well (NHS, 2023; Arthritis UK, 2026). The joints can then go beyond their normal range of movement.

Most experts agree that joint hypermobility syndrome is part of a spectrum of hypermobility disorders that includes Ehlers-Danlos syndrome (EDS) (NHS, 2023). Joint hypermobility can also be part of other, separate and rare connective tissue conditions, such as Marfan syndrome (Arthritis UK, 2026).

Not a diagnosis — for more information, contact me or another trusted healthcare provider.

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