Orthopedic reamer with expandable cutting head

Device and method for reaming bone. In exemplary embodiments, the device may comprise a shaft configured to be rotated about a long axis thereof. The device also may comprise a plurality of cutting members connected to a distal end region of the shaft, rotationally offset from one another about the long axis, and forming a portion of an expandable cutting head. The device further may comprise an inner member configured to be moved with respect to the shaft to change a diameter of the cutting head. In exemplary methods, the device may be utilized to ream a medullary cavity while being pushed or pulled along the medullary cavity.