The Cobb Periosteal Raspatory / Elevator is used by orthopedic surgeons to dissect or separate hard tissue like periosteum from long bones prior to reduction and fixation of fractures. It is also used to retract tissue in confined spaces.Cobb Periosteal Raspatory features a round handle with serrations in crisscross pattern for better handgrip. The handle extends to a flat, round, and semi-sharp blade that is available in variety of widths, ranging from 10 mm to 32 mm.