That "Tight" Muscle Might Be Doing Its Job

A patient tells you her hamstrings have felt tight for years. She stretches daily. Sometimes twice a day. It never sticks, and some days the stretching seems to make the ache worse instead of better. If this patient is also hypermobile, her hamstrings are probably not short. They may be working overtime to hold a joint together that does not have enough passive support to do it on their own.

The Proprioception Problem Behind the "Tightness"

Joint position sense depends on feedback from mechanoreceptors in ligaments, joint capsules, and skin. In connective tissue that is more extensible than typical, that feedback becomes less reliable. A controlled study comparing proprioceptive precision in patients with Ehlers-Danlos syndrome to healthy controls found that EDS patients were measurably less precise at estimating their own hand position using proprioceptive input alone, and that this imprecision correlated with the severity of joint hypermobility as measured by Beighton score.[1] When the nervous system cannot fully trust where a joint is in space, one of its most reliable fallback strategies is to increase background muscle tension around that joint. The tightness your patient feels is often that fallback strategy at work.

Muscle Guarding Is a Stabilization Strategy, Not a Dysfunction

In hypermobile patients, ligaments and joint capsules contribute less passive stability than they do in a typical joint, which shifts more of the stabilization workload onto muscles and onto the nervous system's ability to control them.[2] Guarding around an unstable joint is not a maladaptive quirk. It is the system doing exactly what it is supposed to do with the information and support available to it. That reframe matters clinically, because it changes the question from "how do I lengthen this muscle" to "why does this muscle believe it needs to hold on this hard, and what would let it stop."

Why Static Stretching Often Backfires

If a muscle is guarding to compensate for joint laxity, forcing it into a longer position does not address the underlying instability, and it can remove the very tension the joint was relying on for support. This is one reason patients report that aggressive stretching provides only brief relief before the tightness returns, sometimes worse than before. Physical therapy for hypermobility-related conditions is better oriented around building strength, motor control, and proprioceptive accuracy around the joint rather than chasing length in the muscle that is protecting it.[2]

Build Trust Before You Build Length

The most evidence-informed hypermobility rehabilitation approaches focus on retraining the nervous system's confidence in the joint, not on relaxing the muscle directly. A recent case series applying a neuroplasticity-based approach to patients with hypermobility-related upper cervical instability used proprioception and motor control training with biofeedback, including slow, sustained isometric holds with careful re-checking of alignment, to help the nervous system build accurate, trustworthy position sense before progressing load or range.[3] Two of the three patients in that series returned to full or near-full function using this approach. The principle generalizes well beyond the cervical spine: give the nervous system a joint it can trust, and the guarding around it tends to ease on its own.

A Practical Reframe for Documentation and Patient Education

This distinction is also useful in how you talk to patients. Many hypermobile patients have spent years being told to stretch more, and have quietly concluded that their body just does not respond to treatment. Naming muscle guarding as a protective, purposeful response, rather than a flaw to be stretched away, often lands as validating rather than technical. It also sets up the actual plan of care, strength and motor control work aimed at joint stability, in a way that makes intuitive sense to the patient instead of contradicting what every other provider has told them to do.

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References

1. Clayton HA, Jones SAH, Henriques DYP. Proprioceptive precision is impaired in Ehlers-Danlos syndrome. Springerplus. 2015;4:323. doi:10.1186/s40064-015-1089-1

2. Russek LN, Stott P, Simmonds J. Recognizing and Effectively Managing Hypermobility-Related Conditions. Phys Ther. 2019;99(9):1189-1200. doi:10.1093/ptj/pzz078

3. Chalela S, Russek LN. Presentation and physical therapy management using a neuroplasticity approach for patients with hypermobility-related upper cervical instability: a brief report. Front Neurol. 2024;15:1459115. doi:10.3389/fneur.2024.1459115