FIELD: medicine.
SUBSTANCE: group of inventions relates to medicine. A bone plate contains a lower side (3) provided to lean against bones, and an upper side (2) opposite to a bone, as well as holes preferentially provided substantially along a longitudinal axis of the plate wherein bone screws (9, 11) are geared to attached to the bone. At least one of the holes preferentially represents an extended through hole (4) with a longer axis towards the longitudinal axis of the plate. One of portions of a side edge segment of the extended hole comprises turns (5) of thread which observed crosswise a plane of the upper side are provided in depth of the extended hole (4) partially only. However, if watching crosswise the plane of the upper side, over the turns of thread (5) and/or thereunder, a smooth-wall retaining structure (6) to contact a force closure with an appropriate counter-structure (14) on a head (10, 12) or a neck of the bone screw (9, 11) can be seen. A system comprising the bone plate (1) and at least one bone screw (11). The head (12) and/or neck of the bone screw (11) towards its longitudinal axis (6) comprise following thread (13) on a first portion, followed with a support structure (14) on a second portion supplementing the retaining structure (6) of the extended hole (4) of the bone plate (1).
EFFECT: enhanced application of previously known bone plates and higher flexibility of their use.
13 cl, 18 dwg
