What distinguishes cross-action clamps?

• A. They have a smooth surface
• B. Their shafts cross over approximately halfway down
• C. They are only used for delicate tissues
• D. They are made for single-use only

Answer: (B)

The distinguishing feature of cross-action clamps is that their shafts cross over approximately halfway down the instrument. This design facilitates a unique mechanism that allows for a stronger grip and closure when clamping, providing enhanced control during surgical procedures. The cross-action design also allows the surgeon to apply significant force with minimal effort, making them particularly effective in situations where secure clamping is essential.

The other characteristics mentioned in the other options do not specifically define cross-action clamps. While some surgical instruments may have smooth surfaces, this is not a defining feature of all clamps and does not uniquely identify cross-action clamps. Similarly, the use of cross-action clamps is not limited to delicate tissues; they can be used on a variety of tissue types depending on the surgical context. Lastly, while some clamps are designed for single-use, cross-action clamps are often reusable surgical instruments, further differentiating them from options solely intended for one-time use.