A plate member assembly is provided for use in orthopaedic or trauma surgery. The plate member assembly includes a plate member having a top side and a bottom side with at least one passage extending therethrough. The at least one passage includes a first bore with a first end open towards the top side, a seat portion configured to receive the head of the bone anchor, and a second bore open towards the bottom side. The first bore comprises a first central axis and the seat portion comprises a second central axis. The anchor can be angled within the seat portion relative to the second central axis. Recesses are provided at the first bore and second bore to permit the bone anchor to be further angled in a favored direction relative to the second central axis.
