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Headless Compression Hollow Screw Cannulated Screw Bone Screws Orthopedic Implants Bone Implant

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Product Description

Basic Specifications

Model NO.
Cannulated Screw
Color
Customized
Application
Trauma Surgery
Material
Titanium Alloy
Transportation
DHL / TNT / FedEx / Air Flight
Transport Package
Plastic Bag / Carton
Specification
3.0 / 3.5 / 4.0 / 5.0
Origin
China
HS Code
902110000
Production Capacity
300000 Pieces / Year

Product Overview

What is a Cannulated Headless Compression Screw?

The Headless Compression Screw is a specialized cannulated screw used for scaphoid fracture fixation and other small bone trauma surgeries. This innovative orthopedic solution generates compression across the fracture site prior to being countersunk below the articular surface, minimizing interference with surrounding soft tissues.

A Cannulated Headless Compression Screw (CHCS) is designed to provide more stable fixation than traditional screws while reducing the risk of causing damage to the surrounding soft tissues. Unlike traditional screws with protruding heads, CHCS screws are headless with a tapered end that compresses the fracture site to promote bone healing.

Surgical Technique Guide

1 Incision and Exposure
Make a small incision (1-3 cm) near the fracture site, avoiding important 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 the anatomical position. Continuously monitor the reduction effect under C-arm fluoroscopy.
3 Guide Wire Insertion
Determine the entry point and insert the guide wire under fluoroscopic guidance along the designed path until it reaches the appropriate position, perpendicular to the fracture plane.
4 Determination of Screw Length
Measure accurately using a dedicated measuring device over the guide wire. Alternatively, use a second guide wire of the same length to calculate the depth. Select a screw 2-4 mm shorter than the measured length.
5 Drilling and Insertion
Use a cannulated drill bit with irrigation for cooling. Mount the screw onto the compression sleeve and insert manually over the guide wire. Further turning of the sleeve will close and compress the fracture.
6 Wound Closure
Irrigate the wound with normal saline, suture in layers (deep tissues then skin), and perform appropriate dressing and fixation with a splint or plaster.

Product Visualization

Advantages of CHCS

Reduced Tissue Damage: Headless design minimizes irritation to surrounding soft tissues and tendons.
Enhanced Stability: Provides superior compression and stable fixation compared to traditional threaded screws.
Minimally Invasive: Cannulated design allows for precise percutaneous insertion over a guide wire.
Improved Healing: Better irrigation through the hollow center and stable compression promotes faster bone union.

Frequently Asked Questions

What materials are these screws made of?
Cannulated Headless Compression Screws are typically manufactured from high-grade titanium alloy or stainless steel to ensure biocompatibility and strength.
How long does recovery take after CHCS surgery?
Recovery time varies by fracture severity. Most patients begin physical therapy a few weeks post-surgery, with significant improvement seen over several months.
Can these screws be removed later?
While they are designed for permanent internal fixation, they can be removed if they cause localized pain or other clinical complications, following a physician's consultation.
What are the primary indications for use?
They are ideal for fractures of long bones (femur, tibia, humerus) and specifically effective for spiral fractures, nonunions, and malunions.
Are there any activity restrictions post-surgery?
Patients are usually instructed to avoid weight-bearing on the affected limb for several weeks. Following the surgeon's specific rehabilitation protocol is essential for success.
What is the typical lead time for orders?
Standard lead time for implants is approximately 30 days, while specialized surgical instruments may require up to 45 days for production.

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