Description

A cannulated cancellous screw with a 4.5mm diameter and full-thread design is a specialized type of screw used in orthopedic surgeries, particularly in bone fixation procedures. Let’s break down what each of those terms means:

Cannulated: This refers to a hollow core within the screw shaft. This design allows a guide wire or other instruments to pass through the center of the screw. It assists in accurate placement of the screw and can be useful in minimally invasive surgeries.

Cancellous Screw: Cancellous bone is the spongy, less dense bone typically found at the ends of long bones. Cancellous screws are designed for fixation in this type of bone, offering better grip and anchorage due to their threads.

4.5mm Diameter: This indicates the width of the screw shaft. The 4.5mm diameter screw is a specific size, and choosing the correct diameter is crucial for providing sufficient stability without damaging the bone.

Full Thread: The entire length of the screw is threaded, providing continuous engagement with the bone. This design offers better purchase and stability, especially in softer bone types.

Titanium: Titanium is a common material used in orthopedic implants due to its biocompatibility and strength. It’s lightweight and resistant to corrosion, making it suitable for surgical implants.

This type of screw is commonly used in orthopedic surgeries, particularly in fixing fractures or fusions in bones like the femur, tibia, or other areas where cancellous bone is prevalent. The cannulated design assists surgeons in precise placement, and the full-threaded feature provides good stability in softer bone structures.

It’s essential to note that the specific use and appropriateness of a screw are determined by a surgeon based on the patient’s condition, bone quality, and the nature of the procedure.