Cannulated Cancellous Screw 7.0mm X 80mm Dia. 16mm Thread SS316L Orthopedic

The Orthopedic Cannulated Cancellous Screw with the specifications 7.0mm x 80mm, 16mm thread, and SS316L material is a specialized implant designed for orthopedic procedures, particularly for fixing fractures in cancellous (spongy) bone. Here’s a detailed breakdown of its features:

Specifications Breakdown:
7.0mm Diameter: The screw has a diameter of 7.0 millimeters, which is considered large for orthopedic screws. This size ensures a strong and secure fixation, especially in larger bones or bones with thicker structures, such as the femur, tibia, or pelvis. The large diameter helps ensure the screw holds firmly in cancellous bone, which is softer and more porous.

80mm Length: The screw measures 80 millimeters in length. This length is suitable for fractures located deeper in the bone or for securing fractures that require longer screws for enhanced stability. The length is selected depending on the depth of the fracture and the anatomy of the bone.

16mm Thread: The threaded portion of the screw extends 16 millimeters. The thread engages with the cancellous bone and ensures the screw is securely anchored. The threads are designed to grip the spongy, trabecular structure of cancellous bone, providing stability and reducing the risk of screw loosening.

Cannulated: The screw is cannulated, meaning it has a hollow core. This design allows the screw to be inserted over a guidewire, which helps ensure precise placement. The cannulated feature is particularly advantageous for minimally invasive procedures, as it allows for smaller incisions and reduced trauma to the surrounding soft tissue.

Cancellous Screw: Cancellous screws are specifically designed for use in cancellous (spongy or trabecular) bone, which is softer and more porous compared to cortical bone. These screws typically have larger, more spaced-out threads to help them grip the softer bone and provide stable fixation.

SS316L (Stainless Steel 316L): The screw is made from SS316L stainless steel, a high-quality, corrosion-resistant material. The “L” in SS316L stands for “low carbon,” which improves the material’s resistance to corrosion and ensures better biocompatibility. This type of stainless steel is known for its strength, durability, and resistance to chemical degradation, making it ideal for long-term use in medical implants.

Typical Uses:
This screw is commonly used in:

Fracture Fixation: Especially in cancellous bone, such as the femur, tibia, pelvis, or distal radius. The screw stabilizes the bone and helps promote healing.
Osteotomies: In procedures where bone is cut and repositioned to realign or correct deformities, such as joint realignment.
Spinal Fixation: For stabilizing vertebrae during spinal surgeries, especially where cancellous bone is involved in the vertebral body.
Advantages of Cannulated Stainless Steel Screws:
Minimally Invasive: The cannulated design allows the screw to be placed over a guidewire, making the procedure more precise and less invasive. This reduces the need for large incisions, which minimizes tissue trauma and speeds up recovery.
Strength and Durability: SS316L stainless steel is strong, durable, and resistant to corrosion, ensuring the screw maintains its integrity over time even in a harsh biological environment.
Biocompatibility: SS316L is highly biocompatible, reducing the risk of allergic reactions, infections, or rejection by the body. This makes it an excellent material for implants that will remain in the body long-term.
Conclusion:
The 7.0mm x 80mm Cannulated Cancellous Screw made from SS316L stainless steel is an ideal implant for securing fractures in cancellous bone. Its large diameter (7.0mm) and 16mm threaded portion provide a secure, stable fixation in softer, spongy bone. The 80mm length ensures sufficient depth for larger or deeper fractures. The cannulated design allows for precise screw placement over a guidewire with minimal tissue disruption, which accelerates recovery. The use of SS316L stainless steel guarantees strength, corrosion resistance, and biocompatibility, making this screw a reliable and durable option for orthopedic procedures.