Tennis leg refers to a condition caused by tears in the musculotendinous junction of the medial gastrocnemius (located in the posterior area of the lower leg). The injury can be caused by running, jumping or pushing off on one leg as commonly required in sports like tennis, basketball and soccer. When it occurs, it usually presents together with injuries to other muscles in the posterior area of the lower leg. Typical symptoms are an audible popping sound in that area and persistent pain and soreness there. There may also be pain associated with the act of trying to flex the ankle. Calf or shin support braces can stabilize the injured muscles and tendons and give them a chance to heal. In addition, they can provide compression to reduce pain and further promote healing. Please choose a support in consultation with your doctor to ensure the choice is suited to your condition and activity level.