Patent ID: 8118849

Claim:
A screw assembly for insertion into a bone region, the screw assembly comprising: a screw body including a distal end, a proximal end, a proximal threaded area positioned near the proximal end, and a distal threaded area positioned near the distal end; and a washer including an internal threaded area configured to engage with the proximal threaded area of the screw body, wherein the washer further includes a first section and a second section, wherein the first section includes a first outer diameter, wherein the second section includes a second outer diameter larger than the first outer diameter, wherein the first and second sections are formed of a single piece, and wherein the second section further includes an interior surface configured to mount flush with an outer surface of the bone region; wherein the proximal threaded area includes a bone thread region that is configured to engage the bone region, and a washer thread region that is engaged by the washer threaded area, the threads of the bone thread region being different from the threads of the washer thread region.