Expandable mid-foot osteotomy devices, systems, and methods for treating mid-foot disorders

A mid-foot osteotomy device, comprising a biocompatible implant having a wedge shape member having a first lateral planar surface, a second lateral planar surface, a dorsal aspect, and a plantar aspect, an inflation chamber formed between the first lateral planar surface and the second lateral planar surface, a central opening passing laterally through each of the first lateral planar surface and the second lateral planar surface, and means for fixation and compression of two opposing mid-foot bone tissue surfaces through the central annular opening, the wedge-shaped member has an angular taper formed between the first lateral planar surface and the second lateral planar surface and along an entire longitudinal axis of the wedge-shape member, wherein the angular taper is expandable between a pre-implant angle at the dorsal aspect and a post-implant angle at the dorsal aspect under the influence of a fluid input to the inflation chamber, and the post-implant angle at the dorsal aspect is greater than the pre-implant angle at the dorsal aspect such that the first lateral planar surface and the second lateral planar surface are each configured to abut substantially planar bone surfaces of a surgically cut mid-foot bone and provide angular correction thereto.