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

• 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.

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.

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.

Hamstrings are a familiar problem in this clinic. Alex, PhysioHub's founder and a HCPC-registered physiotherapist, works with them constantly in Uckfield: footballers and sprinters who felt the grab mid-run, runners nursing a tightness that never fully clears, and desk-based clients with a deep ache under the sitting bone. Having competed internationally in canoe sprint and trained in strength sport for years, alongside his MSK work across the NHS and private practice, he knows both the tissue and the pressure to get back too soon.

Most people who book have already had at least one setback. They rested until it felt fine, went back at close to full speed, and felt it go again in the same session. Your first appointment is a 60-minute assessment: full history, hands-on testing to identify which of the three patterns you have, side-to-side strength measures, and a clear explanation of the gap you are working with. Treatment starts on the day, and you leave with a criteria-based plan, so progression is decided by what you can do rather than by the calendar.

What clients get out of it is a hamstring that holds under speed: back to sprinting, five-a-side or a race build without the flinch, sitting and driving comfortably again for the high-hamstring cases, and a measurable closing of the strength gap between sides that makes a repeat far less likely.

You can access this through our sports injuries and performance service for the diagnosis and return-to-sport stages, and our gym-based 1:1 rehab and strength training sessions for the heavy lengthened-position work that protects the hamstring, coached rather than left to a handout. For the staged build back to sprinting and sport, see returning to sport after injury, or book an assessment to get your current capacity measured.

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.