Lateral Hamstring Strain: What to Know

The hamstrings cross the back of the hip and knee. A strain can affect muscle fibres or the tendon near an attachment. Pain may be sharp during a sprint, sudden change of direction, or forceful stretch, then become sore with walking or sitting. Bruising, local tenderness, weakness, or a feeling of pulling can occur, although symptoms vary. Outer-thigh pain can also come from another hip, back, or knee problem, so an examination helps distinguish the source. [Thigh Pain](/symptoms/thigh-pain/) can provide useful context when the painful area is unclear.

Reduce or pause the movement that reproduces pain, especially sprinting, deep stretching, and explosive jumping. In the early period, comfortable walking and gentle movement are usually preferable to complete stillness. A clinician or physiotherapist can assess strength and range of motion, then build an exercise plan that progresses from controlled loading to running drills. [Exercise Therapy](/treatments/physiotherapy-and-rehabilitation/exercise-therapy/) and [Sports Physiotherapy](/treatments/physiotherapy-and-rehabilitation/sports-physiotherapy/) may support that process. A [Return-to-Sport Programme](/treatments/physiotherapy-and-rehabilitation/return-to-sport-programme/) can help test speed, power, and direction changes before full participation. PRP injection may be discussed in selected persistent cases, but it is not suitable for everyone.

Arrange an assessment if pain is severe, walking is difficult, bruising is extensive, weakness persists, or symptoms are not steadily improving. Seek prompt care after a sudden pop, a visible dip in the muscle, or inability to push off. New numbness, marked swelling, fever, or pain after significant trauma also needs medical attention. A clinician can decide whether imaging or a structured rehabilitation plan is appropriate.

Ask which tissue is injured, what activities are safe now, and how strength will be checked before running. You can also ask when stretching should begin, how recurrence risk will be reduced, and whether a rehabilitation programme is preferable to an injection for your symptoms.