Figure 2.

Surgical procedure. (a) Custom-made three-flute end mill set. (b) Bone bed preparation for the cylindrical lip of the housing and retention screws. (c) Press-fit stabilization of the housing on the flat-bottomed bone and initial insertion of the retention screws. (d) Bevel-seating of the disc implant on the housing. (e) Assembling of the cover screw and final stepwise fitting of the retention screws. (f,g) Completion of stress-free stabilization of the TBS devices on bone. (h) X-ray image of the TBS devices installed in the tibia.