Which statement about the 5th Met Fracture set is incorrect?

• A. We have a cannulated system for solid titanium screw
• B. Arthrex jones screws have low profile heads
• C. The thread pitch changes on the end of the screw to achieve compression
• D. The screw comes in 4.5, 5.5, and 6.0

Answer: (C)

The statement regarding the thread pitch changing on the end of the screw to achieve compression is incorrect. In the context of screw design, especially for orthopedic applications like fractures, screws are engineered with specific thread profiles that do not typically alter or change in pitch along the length of the screw. The primary function of these threads is to provide stability and grip within the bone; the design generally focuses on consistent pitch for appropriate engagement and stability.

Compression is achieved through other means, such as the geometry and design of the screw and the way it is placed or tightened, rather than changing the pitch. Therefore, while compression is desired in fixation, it is not the result of variable thread pitch at the screw's end, making this statement incorrect.

Understanding this distinction helps clarify how orthopedic screws are designed and used, particularly in applications related to 5th Metatarsal fractures, where stability and proper alignment are critical for effective healing.