Surgical Technique of Cannulated Headless Compression Screw
The surgical technique of cannulated headless compression screws generally involves the following standardized steps:
1
Incision and Exposure
Make a small incision (1-3 cm) near the fracture site, avoiding nerves and blood vessels. Gently separate soft tissues layer by layer to fully expose the fracture end.
2
Fracture Reduction
Use manual traction, rotation, and lifting to restore anatomical position. Monitor continuously under C-arm fluoroscopy for accuracy.
3
Guide Wire Insertion
Determine the entry point based on fracture location. Insert the guide wire under fluoroscopic guidance perpendicular to the fracture plane.
4
Determination of Screw Length
Use a dedicated measuring device over the guide wire. Ensure the tip is firmly on the bone for accurate measurement. Select a screw 2-4 mm shorter than measured.
5
Drilling
Select an appropriate cannulated drill bit. Drill along the guide wire using irrigation solution for cooling. Check depth with an image intensifier.
6
Screw Insertion
Mount the screw head onto the compression sleeve and insert manually over the guide wire. Advance until the leading thread engages the far fragment.
7
Compression and Fixation
Turning the sleeve closes and compresses the fracture. Advance the screw until the head is flush with the bone and trailing threads are fully buried.
8
Wound Closure and Dressing
Irrigate the wound with saline. Suture in layers (deep tissues then skin). Apply dressing and use a splint or plaster for fixation.
Product Overview
What is a Cannulated Headless Compression Screw?
The Headless Compression Screw (CHCS) is a cannulated screw specifically designed for scaphoid and long bone fracture fixation. It generates compression across the fracture site prior to being countersunk below the articular surface, reducing the risk of soft tissue irritation.
Key Advantages:
Reduced risk of soft tissue damage due to headless design.
Enhanced stability compared to traditional screws.
Minimally invasive procedure leading to faster recovery.
Greater range of motion post-operation.
Hollow center allows for precise guide wire insertion and better irrigation.
Indications:
CHCS screws are primarily used for fractures in long bones (femur, tibia, humerus) and are exceptionally effective for spiral fractures, nonunions, and malunions.
Frequently Asked Questions
How long does it take to recover from CHCS surgery?
Recovery time varies depending on the severity of the fracture. Most patients begin rehabilitation a few weeks after surgery and see significant improvement over several months.
Can Cannulated Headless Compression Screws be removed?
In some cases, screws may be removed if they cause pain or complications. However, because they are headless and countersunk, they are often left in place permanently unless medically necessary to remove.
What materials are these screws made of?
These screws are typically manufactured from high-grade Titanium Alloy or Stainless Steel to ensure biocompatibility and strength.
Are there any activity restrictions post-surgery?
Patients are usually instructed to avoid weight-bearing on the affected limb for several weeks. Your physician will provide a specific timeline based on your healing progress.
What types of screws are available?
Common variations include fully threaded, partly threaded, self-drilling, and self-tapping screws, allowing surgeons to choose based on the specific bone quality and fracture type.
Are the products certified for international use?
Yes, these orthopedic implants are typically manufactured under strict quality standards such as CE and ISO13485 to ensure global medical compliance.