PhysioHub Blog

Hamstring Pain: Strain, Tendon or Referred? How to Tell and What to Do

Hamstring pain shows up in very different ways: a sudden grab mid-sprint, a deep ache under the sitting bone that hurts on long drives, or a tightness that never quite lets go. Those patterns point to different problems, and matching the treatment to the right one is what gets you back to full speed without repeated setbacks.

The stretches people reach for first, and when they actually help, are covered in PhysioHub's guide to hamstring stretching exercises.

Physiotherapist guiding a patient through a supported leg stretch during treatment
The three common patterns
  • Acute strain: a sudden sharp pain during sprinting or a fast stretch, sometimes with bruising. This is a true muscle tear along the back of the thigh.
  • High-hamstring tendinopathy: a nagging deep ache right under the sitting bone, worse with prolonged sitting, driving or running uphill.
  • Referred pain: tightness or ache that actually originates from the lower back or nerve, with no clear injury.

The NHS guide to hamstring injury covers the acute strain picture.

Why hamstrings re-injure so often

Hamstrings have one of the highest re-injury rates in sport, and the reason is usually an incomplete rehab. Returning once the pain has gone, while strength and capacity are still down on the other side, sets you up to tear it again. A lingering strength deficit is one of the strongest predictors of a repeat, which is why the finish of rehab matters as much as the start.

Rebuilding it properly

Effective hamstring rehab is built on progressive strengthening, with a strong emphasis on the muscle working as it lengthens, which is exactly how it fails during sprinting. Programmes that load the lengthened position have consistently reduced re-injury. From there you rebuild running speed in stages before any return to competition. Our injury prevention exercises include the posterior-chain work that protects the hamstring.

How this works at PhysioHub

The belief that costs people the most with hamstrings is that pain-free means healed. At PhysioHub in Uckfield the repeat injuries nearly all follow one route: rested until it felt fine, went back at close to full speed, felt it go again in the same session.

A hamstring stops hurting well before it regains the strength to absorb load at speed, and the gap between those two moments is where the re-injuries happen. A measurable side-to-side strength deficit is usually still there at the point someone feels ready, and sprinting is what exposes it. Testing both sides gives a number to close rather than a feeling to trust, and heavy work in lengthened positions is what closes it. High hamstring pain under the sitting bone behaves differently again, being a compression problem that sitting and driving keep provoking, so the same loading plan needs adjusting for it.

To have your current capacity measured rather than estimated, book an assessment.

FAQs

How long until I can run again?
A mild strain may settle in a couple of weeks, a significant one takes longer. The stages of strength and speed you pass matter more than the number of days.

Should I stretch a sore hamstring?
Aggressive stretching of a high-hamstring tendon problem often makes it worse. Loading it with strength work is usually the better route, which is why the diagnosis matters. Our guide to hamstring stretching exercises covers the five main stretches and the situations where each one is unhelpful.

PhysioHub – Empowerment through Evidence-Based Education.

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