The study will be divided into 3 periods. Patients with pressure ulcers or post-operation wounds with wound areas of 2-30 cm2, who will accept participating in the study, pass all the accepted inclusion criteria, and sign the informed consent form, will be recruited. Then they will be treated with silver dressings for up to three weeks (first period). In case that the wounds will not show a reduction of at least 50% of the wound area during the first period, then the wounds will be treated with the copper oxide dressings for at least 3 weeks (second period). In case that there will be a clear improvement during the second period, the wounds may continue to be treated with the copper oxide dressings or with any other wound dressings according to the treating physician judgement and decision for an additional 3 weeks (third period) or earlier if the wound will be closed.
Thirty patients of 18-85 years of age, with 2-30 cm2 pressure ulcers or post-op wounds, will be recruited and treated with either wound dressing containing silver or wound dressings containing copper oxide microparticles. The efficacy of the two types of dressings in reducing the size and improving the condition of the wounds will be compared.