Deformable threaded locking structures, and related systems and methods

A bone plate, comprising:

• a plate body that defines a combination hole comprising a locking hole and a compression hole that intersect one another and each extends from an outer surface of the plate body to a bone-facing surface of the plate body, wherein the locking hole and the compression hole extend away from each other along a longitudinal axis,
• the plate body further defining 1) a locking surface that defines the locking hole, 2) a second surface that defines the compression hole, and 3) an intersection boundary between the locking surface and the second surface;
• wherein the locking surface further defines:
• first, second, and third columns sequentially located about a central axis of the locking hole, each column having a first side, a second side opposite the first side, and a column length measured from the first side to the second side;
• a first recess extending from the second side of the first column to the first side of the second column;
• an additional recess extending from the second side of the third column to the first side of the first column;
• plate threads that traverse each of the columns and at least portions of the first recess and the additional recess;
• and
• a transition zone that extends from the second column to the intersection boundary on one side of the longitudinal axis and extends from the third column to the intersection boundary on an opposite side of the longitudinal axis wherein the transition zone on the one side and the opposite side of the longitudinal axis defines a transition length that is greater than the column length of the first column.

A bone plate, comprising:

• a plate body that defines an outer surface, a bone-facing surface opposite the outer surface, and a combination hole comprising a locking hole and a compression hole that intersect one another and each extending from the outer surface to the bone-facing surface, wherein the locking hole and the compression hole extend away from each other along a longitudinal axis,
• the plate body further defining 1) a locking surface that defines the locking hole, and 2) a second surface that defines the compression hole;
• wherein the locking surface further defines:
• a plurality of columns sequentially located about a central axis of the locking hole in a polygonal pattern;
• a plurality of recesses located, respectively, between at least some of the columns;
• and
• plate threads that traverse each of the columns, wherein the plate threads define crests, roots, and flanks that extend from the roots to the crests,
• wherein the flanks have a first portion that defines a thread angle in a range of about 25 degrees to about 40 degrees and a second portion that defines a second thread angle in a range of about 40 degrees to about 75 degrees, wherein the second portions of the flanks are located between the first portions and the crests, respectively.