An intraosseus shunt can comprise a shunt body and a valve. The shunt body can be configured for insertion into bone and can have a fluid inlet, a fluid outlet, and a flow passage extending within the shunt body between the fluid inlet and the fluid outlet. The flow passage, the fluid inlet, and the fluid outlet can be configured for cerebrospinal fluid flow therethrough to cancellous bone. The valve can be attached to the shunt body and configured to control flow through the flow passage. A method of shunting biological fluid away from a hyper-pressurized biological cavity to a bone can comprise (i) creating a passage through cortical bone to provide access to cancellous bone, and (ii) positioning the shunt into the passage. The valve can control communication between the biological cavity and the cancellous bone.
