The dynamic bone plate device comprises first (110) an second (120) bone plate components. The first and second bone plate components each comprise at least one hole (111, 112, 121, 122) for receiving bone screws (131, 132, 133, 134) for attachment to first and second bone segments respectively the first and seond bone plate components also comprise a male component (113) and a female component (123) for mating with the male component respectively. The male component is adjustable after mating with the female component to adjust a position of the first bone plate component with respect to the second bone plate component and the components are locked relative to eah other by at least one bone screw inserted through the at least one hole of the second bone plate component. The bone plate can maintain compression created between the segments, and in some embodiments can cause compression between them.
