Inclusion Criteria:  Patients who need a reconstructive procedure and a microsurgical reconstruction is deemed the best option by the plastic, orthopedic or other surgeon in response to a post-oncological, post-traumatic or congenital tissue defect or to treat lymphedema. Patients who have been selected by the Clinical Registry Manager at the Clinical Center as appropriate candidates for treatment with RASM in accordance with the Instruction For Use (IFU). Subjects who fit the criteria to perform surgery requiring reconstructions using free flaps, replantations or lymphatic reconstructions. Subjects who agree to have the surgery and the anesthesia. Subjects who voluntarily decide to participate in this registry with the surgery performed with the aid of the RASM Surgical System and sign the Informed Consent Form  Exclusion Criteria:  Subjects who have bleeding or coagulation disorders in the past or present. Any criteria that preclude prolonged anesthesia. History of anaphylaxis or severe complicated allergy symptoms. Clinically significant cardiovascular, digestive, respiratory, endocrine, or central nervous system disorders or previous mental disorders that may significantly affect the data collection or the ability to comply with the protocol. Evidence or history of autoimmune disease or compromised immune system. Participation in another clinical trial within 4 weeks prior to participation in the registry. Subjects belonging to vulnerable populations or ineligible to participate for other reasons by a Clinical Registry Manager at a Clinical Center. Subjects with pacemaker