A groin strain is a result of a tear or rupture that occurs in any of the five adductor muscles. The adductor muscles include the pectineus, adductor brevis, adductor longus, gracilis and adductor magnus.
Grade One Symptoms
Grade one is normally minor damage. Less than 10 per cent of the muscle fibres will be torn. Symptoms include discomfort in the inner thigh or groin; groin muscles may feel tight or tender to the touch; or discomfort in running or a changing of direction.
Grade Two Symptoms
Grade two is a moderate tear with 10 to 90 per cent of the muscle fibres torn. Symptoms include sudden sharp pain in the groin or adductor muscles when exercising; tightening of the groin muscles a day ofter the strain; minor swelling or bruising; weakness and pain when squeezing the legs together; discomfort and pain in stretching the strained muscles; or pain when running (walking may be affected as well).
Grade Three Symptoms
Grade three is the most serious groin injury---a partial or full rupture. Symptoms include severe pain during exercise, sprinting, changing direction or running; substantial bruising and swelling on the inner thigh within 24 hours of the injury; pain when stretching the muscles, and/or a lump on the muscles.
Most groin strains are a result of exercise. They can be due to external injury and a strain when performing such tasks as lifting a heavy or awkward object.
Groin strains are treated with rest, compression, ice, elevation, and pain medication if needed.