this often chronic ailment may repond to conservative treatment , including modification of training and calf muscle strengthening exercise that can be tried over three months. It is also important to reduce friction against the tendon by adjusting shoes or technique . If this regime is not successful, surgery may be necessary to release any constrictions and adhesions between the skin and paratendon , witch in severe cases needs to be excised. Cortisone injections should be administered only in rare cases, due to the high risk of consequential tendon repture. Surgery is followed by a few weeks partial immobilisation and rehabilitation before resuming sport. Weigh bearing is usually allowed early on.