Soft tissue injuries should settle fairly quickly. When they don’t the cause may be something else. Backs that are not functioning properly may refer down the leg or create a biomechanical overload of muscles down the leg. If pain becomes chronic and doesn’t go away, get an assessment from an experienced physiotherapist. The longer the problem is there, the harder it may be to get rid of it. Although it is quite rare, occasionally you can experience a back injury, which produces only thigh pain. This can be wrongly diagnosed as all the symptoms seem to show a thigh strain and the back may not have been checked. Should there be no improvement after treatment a suspicion should be placed on the lower back area in particular and this should be checked. A full biomechanical assessment is necessary for a complete diagnosis. With appropriate treatment to the cause of the problem, not necessarily where the pain is, symptoms should start to settle. Most cases the injury you see and feel is the injury, but not always. If you have any major concerns see your G.P or your local physiotherapist.