Abstract: A surgical tool system includes a cannula assembly and a handle assembly. The cannula assembly includes a cannula having a sidewall about a central axis. The handle assembly includes a handle and a blade tool aligned with the central axis of the cannula. The blade tool has a blade edge and a back edge. The blade tool is longitudinally extendible relative to the handle. The blade tool is disposed within the cannula. In a deployed mode the back edge of the blade tool impinges on an interior surface of the sidewall of the cannula to force the blade edge of the blade tool to protrude laterally from the central axis of the cannula. This exposes the blade edge of the blade tool beyond an outer diameter of the sidewall of the cannula.