Nipa Orthopedic Implants
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What is a Cannulated Headless Compression Screw?
The Headless Compression Screw is a specialized cannulated screw used primarily for scaphoid fracture fixation. This innovative design generates compression across the fracture site before being countersunk below the articular surface, minimizing interference with surrounding tissues.
Fractures are common and can occur at any time. Cannulated Headless Compression Screws (CHCS) represent a significant advancement in orthopedic technology, offering stable fixation while reducing the risk of soft tissue damage.
Make a small incision (1-3 cm) near the fracture site, avoiding nerves and blood vessels. Gently separate muscles and fascia to expose the fracture end.
Use manual traction and rotation to restore anatomical position, monitored continuously under C-arm fluoroscopy.
Insert the guide wire along the designed path until it reaches the appropriate position at the far end of the fracture, ideally perpendicular to the fracture plane.
Measure accurately using a dedicated device or an alternative guide wire method. Select a screw 2-4 mm shorter than the measured length.
Use a cannulated drill bit of appropriate diameter. Utilize irrigation to cool the bit and minimize thermal injury while checking depth via image intensifier.
Mount the screw onto the compression sleeve and insert manually over the guide wire. Turning the sleeve closes and compresses the fracture until the head is flush with the bone.
Irrigate the wound with saline, suture in layers (deep tissues then skin), and apply appropriate dressing and fixation (splint or plaster).
