A dressing system is disclosed which has a sponge and a near infrared spectroscopy sensor positioned adjacent to the sponge for monitoring oxygenation levels of tissue adjacent to the sponge. The dressing system may further include a tube coupled to the sponge for removing fluid from the sponge. The dressing system comprises: a sponge； and a tensioning system coupled to the sponge. The tensioning system further comprises a central longitudinal member coupled to the sponge； and at least one tensioning member coupled to the central longitudinal member. A sequential compression system comprises: an envelope sleeve dressing； and a bladder that is both expandable and retractable. A tissue filler system is also described and includes a plurality of tubes； wherein each of the plurality of tubes further comprises apertures； and a pump coupled to at least one of the tubes which obviates the need for any sponge or wound screen.
