Abstract: The invention relates to a surgical mid-foot compression pin (1), comprising a core region (2) having a drive, a front thread portion (6) having a front outer thread (7), a rear thread portion (9) having a rear outer thread (10), and a middle portion (8) arranged between the thread portions, the pitch of the front outer thread (S1) being greater than that of the rear outer thread (10) so as to achieve a compression. In accordance with the invention, the rear outer thread (10) has a conical sleeve contour, which tapers in the direction of the front end (3) of the compression pin (1).

Abstract: A subtalar implant (1) for stabilising the subtalar joint in the human foot includes a longitudinal axis (L) extending between a front end (13) and a rear end (14), wherein a first anchor portion (2) is arranged to the side of the longitudinal axis (L) and a second anchor portion (3) is arranged to the side of the longitudinal axis (L). In accordance with the invention, a spreading mechanism (5) to spread apart the implant as a result of relative displacement of the first and second anchor portion (2, 3) at an angle to the longitudinal axis (L) are provided.

Abstract: A surgical bone milling tool, in particular for the arthrodesis of a, preferably the first, metatarsophalangeal joint, with a rotatable milling cutter holder and at least one milling cutter for the production of a concave or convex milling contour in the bone, which is able to be fixed detachably on the milling cutter holder by a fixing element. Provision is made that the fixing element comprises a detent having a spring element provided for the detachable engagement of the milling cutter on the milling cutter holder.