Hamstring
Chronic Hamstring Fibrosis

Chronic Hamstring Fibrosis injury happens when a hamstring injury doesn't heal properly and scar tissue builds up in the muscle. This scar tissue makes the muscle thicker and stiffer than normal, which can lead to ongoing pain, tightness, and less flexibility.

  • Ongoing pain in the back of the thigh
  • Tightness in the hamstring
  • Stiffness after resting
  • Morning stiffness
  • Weakness in the leg
  • Reduced flexibility
  • Pain when running
  • Pain when sprinting
  • Deep ache or tight pulling feeling in the back of the thigh
  • Pain "comes and gos" but often gets worse with running, sprinting, stretching, or long periods of activity
  • Stiffness, especially after resting or waking up in the morning
  • The hamstring feels weaker than before and not as flexible as the uninjured side
  • Returning to sports too soon after a hamstring injury
  • Repeated hamstring strains
  • Long distance running
  • Sprint training without enough recovery
  • Overuse from repetitive sports movements
  • Skipping warm ups and flexibility work
  • Have I had a hamstring injury before?
  • Does the pain keep coming back during sports?
  • Does my hamstring feel tight most days?
  • Is it painful when I run or sprint?

Educational only — not a medical diagnosis.

  1. 1Rest from activities that increase pain
  2. 2Use ice after sports if sore
  3. 3Do gentle stretching when comfortable
  4. 4Work on leg strength gradually
  5. 5Warm up before exercise
  • Pain keeps getting worse over time
  • You keep re-injuring the same hamstring
  • Walking or running becomes difficult
  • Significant weakness develops in the leg
  • Follow a gradual return to sports
  • Stretch gently every day
  • Strengthen the hamstring regularly
  • Do not rush back into sprinting

For educational purposes only. Not a substitute for medical advice.

Tracks symptoms over time (not a diagnosis).