Why Do Hypermobile People Feel Stiff?

The Disconnect Between Objective and Perceived Flexibility

Patients with generalised joint hypermobility frequently present with a description that seems contradictory on its surface: they feel stiff, achy, and tight, yet a clinical assessment reveals range of motion that exceeds normal at most joints. Clinicians unfamiliar with the hypermobility spectrum may find this confusing and may dismiss the subjective complaint of stiffness as inconsistent with the objective findings. It is not inconsistent — the perceived stiffness in hypermobility arises from neurological and muscular mechanisms that are entirely distinct from the connective tissue laxity that produces the excess passive range.

The key distinction is between structural stiffness (resistance arising from the mechanical properties of ligaments, capsule, and connective tissue — which in hypermobility is reduced) and neurological or muscular stiffness (resistance arising from active muscle contraction and altered proprioceptive processing — which in hypermobility is increased as a compensatory response). The patient who reports stiffness is accurately describing their neurological experience; it just reflects a different mechanism than the stiffness arising from articular restriction in a non-hypermobile patient.

Proprioceptive Disturbance in Hypermobility

Joint position sense — the ability to detect the position of a joint in space without visual input — is measurably impaired in hypermobility spectrum disorders, particularly at the knees, lumbar spine, and hands. This proprioceptive deficit arises from the laxity of the capsular and ligamentous receptors (Ruffini endings, Pacinian corpuscles, free nerve endings) that normally provide continuous afferent input about joint position and movement velocity to the spinal cord and brain. When these structures are overly compliant and reach end range (where most mechanoreceptor afference occurs) at abnormally large displacements, their signalling is imprecise.

The nervous system's response to this imprecise proprioceptive input is to interpret the joints as being less stable than they are and to maintain a heightened level of protective muscular co-contraction. This is experienced as a general sense of being held together tightly — a subjective muscular stiffness and effort associated with ordinary movement. Hypermobile individuals frequently report that they feel most stiff first thing in the morning (before movement reactivates proprioception) and after periods of immobility such as prolonged sitting or air travel.

Central Sensitisation and the Experience of Stiffness

In a proportion of hypermobile individuals — particularly those with long-standing symptoms, widespread pain, or significant psychological comorbidities — the perceived stiffness has a central sensitisation component. The spinal dorsal horn and supraspinal pain processing centres become sensitised through prolonged nociceptive input from the chronically loaded musculature, producing an amplified interpretation of normal movement-related sensory input as threatening or effortful. This is not imagined but reflects measurable changes in central pain processing. The same movement that feels free and easy to a person without central sensitisation may be experienced as stiff, effortful, and uncomfortable by a sensitised hypermobile patient even when no peripheral tissue damage is present.

Clinical Approach

Management of perceived stiffness in hypermobility focuses on three areas: reducing protective muscle overactivity through targeted manual therapy and stabilisation exercise; improving proprioceptive accuracy through balance training, coordination work, and progressive loading; and — where central sensitisation is present — addressing the pain processing dysregulation through graded exposure, education about the mechanism of symptoms, and where indicated, psychological support. Stretching as a primary intervention is generally counterproductive. The goal is not to increase passive range but to improve the quality and confidence of movement through the range that already exists.