McCulloch OsteotomeDDP Elite USA McCulloch Osteotome is an instrument very similar to a bone chisel. This osteotome can be used in many different neurosurgical and orthopedic type surgical interventions that require manipulation of bone. It features a slim handle and a further flattened body that ends in a chisel type point that allows for scooping or scraping of the bone for a variety of reasons including increasing access and visualization to the surgical field.