| 主权项 |
1. An arthrodesis bone plate configured to be attached to a carpal region of a patient, the arthrodesis bone plate comprising:
a bone plate body that is elongate along a longitudinal axis that extends in a longitudinal direction, the bone plate body defining a bone-facing inner surface and an opposed outer surface that is spaced from the inner surface along a transverse direction that is perpendicular to the longitudinal direction, the bone plate body including a proximal portion and a distal portion that is spaced from the proximal portion in a distal direction along the longitudinal direction that is substantially perpendicular to the transverse direction, the proximal portion configured to be positioned over a radius of the carpal region, the distal portion configured to be positioned over metacarpal bones of the carpal region; wherein 1) the bone plate body defines a plurality of apertures that extend from the outer surface to the inner surface at the distal portion, a group of the plurality of apertures including individual apertures that are spaced from one another along a lateral direction that is substantially perpendicular to the longitudinal and transverse directions, such that each individual aperture of the group is substantially aligned with at least a respective different one of at least four different metacarpal bones when the distal portion is positioned over the metacarpal bones and the proximal portion is positioned over the radius; 2) each of the individual apertures of the group includes a first portion and a second portion that is open to the first portion along a respective aperture axis, and each of the apertures is elongate along the respective aperture axis, the first portion offset with respect to the second portion, each of the first and second portions of each individual aperture of the group configured to singly receive a bone anchor along respective first and second central axes that intersect the aperture axis so as to attach the distal portion of the bone plate body to the respective four different metacarpal bones, such that at least one of the first and second portions of an individual aperture of the group is defined by a partially threaded surface; and 3) the individual apertures of the group of apertures include first and second apertures positioned on opposed sides of the longitudinal axis, such that the aperture axis of each of the first and second apertures extends away from the longitudinal axis as it extends the in distal direction. |
