Our center's experience with ESWT in trauma surgery (Schaden W., Clin. Orthop 2001)and the observation that not only the traumatic condition (fracture non-union, etc.), but also the surrounding tissue showed favorable tissue healing after ESWT, leads to our hypothesis that ESWT might be beneficial for the much larger number of chronic soft tissue wounds. The investigators anticipate to induce complete wound healing in a number of defined clinical/pathological conditions by ESWT. At the same time efficacy and safety of ESWT will be investigated.