An adjustable bone implant having a body configured to be secured to a first bone surface； an anchoring member configured to be secured to a second bone surface held at a raised position offset from the first bone surface, and a spacing member connecting the anchoring member to the body in an adjustable manner, to selectively space the anchoring member from the body, where the spacing member is located subcutaneously, where the spacing member is configured to receive an input via a transcutaneoustransmission from an external tool, and where the spacing member is configured to lower the first bone surface from a raised position upon receipt of the input and secure the first bone surface at the lowered position.
