A differential dissecting instrument for differentially dissecting complex tissue comprising is disclosed. The differential dissecting instrument comprises a rotary drive train having a central, longitudinal axis, a distal end, and a proximal end. The differential dissecting instrument may also comprise at least one differential dissecting bluntwheel or bluntcone that is rotatably associated with the distal end of the rotary drive train. The bluntwheel or bluntcone may comprise projections that are configured to differentially dissect a complex tissue when the differential dissecting instrument operates. The at least one differential dissecting bluntwheel or bluntcone may have an axis of rotation that can be either coaxial or transverse to the central, longitudinal axis of the rotary drive train. The differential dissecting bluntcone may be a hollow, deformable, elastic cone bearing tissue-engaging projections along one or more edge that is configured to fold and/or deform into a twin set of counter-rotating differentially dissecting edges.
