 - Hyalofast is a sterile, biodegradable non-woven pad 2 x 2 cm or 5 x 5 cm that is composed of HYAFF-11, a benzyl ester of hyaluronic acid. Hyalofast acts as a biodegradable support for the autologous bone marrow aspirate concentrate. Hyalofast is soft and conformable and can easily be cut to fit the lesion size. 