REDUCTION POLY AXIAL FENESTRATED EXTENDED SCREW
Reduction polyaxial fenestrated extended screws are specialized orthopedic implants designed for specific surgical applications, primarily in spinal fusion surgeries and fracture fixation. Here's a breakdown of their specifications and uses:
Size
- Diameters: 4.5mm, 5mm, 5.5mm, 6.5mm and 7.5mm.
- Lengths: 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm and 60mm
Specification
- Material: Reduction polyaxial fenestrated extended screws are typically made from medical-grade titanium or titanium alloy, chosen for its biocompatibility and mechanical strength. This material ensures durability and compatibility with bone tissue.
- Design: These screws feature a polyaxial design, allowing for multidirectional movement of the screw head relative to the shaft. The "fenestrated extended" designation indicates that the screw has fenestrations or perforations along its shaft, and it is extended in length compared to standard screws. This design facilitates better bone graft incorporation and promotes fusion across the implanted segment.
- Thread: Reduction polyaxial fenestrated extended screws have a threaded shaft for fixation into bone tissue. The threads provide stability and grip, ensuring secure anchoring of the screw.
- Fenestrations: Fenestrations are openings or perforations along the length of the screw shaft. These fenestrations allow for bone graft material to be packed around the screw, promoting osseointegration and enhancing fusion between the implanted screw and surrounding bone tissue.
- Extended Length: The extended length of these screws provides additional surface area for bone graft incorporation and enhances stability, particularly in cases where longer screws are required to span multiple vertebral levels or stabilize complex fractures.
- Polyaxial Head: The polyaxial head design allows for articulation in multiple directions, enabling surgeons to achieve optimal screw placement and alignment for enhanced stability and fusion success. The polyaxial feature accommodates variations in spinal anatomy and facilitates easier rod placement during spinal instrumentation.
- Coating: Reduction polyaxial fenestrated extended screws may be coated with materials such as hydroxyapatite (HA) to promote osseointegration and enhance bone healing around the implant. The HA coating helps facilitate a strong bond between the screw and surrounding bone tissue, promoting faster fusion and reducing the risk of implant loosening.
- Size: These screws come in various lengths and diameters to accommodate different patient anatomies and surgical requirements.
Uses
- Spinal Fusion Surgery: Reduction polyaxial fenestrated extended screws are primarily used in spinal fusion procedures to stabilize and fuse vertebral segments. The fenestrated design allows for the incorporation of bone graft material, promoting fusion across the implanted segment. The extended length provides increased stability and enhances fusion success, particularly in cases of multi-level spinal fusion or compromised bone quality.
- Fracture Fixation: These screws may also be used in the fixation of traumatic fractures, particularly in cases where additional support and stability are required. The fenestrated design allows for the application of bone graft material at the fracture site, promoting healing and enhancing fracture stability. The extended length of the screw provides increased purchase in the bone, reducing the risk of implant failure.
- Revision Surgery: In cases where previous spinal instrumentation requires revision or augmentation, reduction polyaxial fenestrated extended screws may be used to provide additional stability and support. The fenestrated design allows for improved fusion at the revision site, while the extended length enhances stability and promotes successful fusion outcomes.
- Osteotomies: These screws can be utilized in corrective osteotomy procedures, where bone segments are intentionally cut and realigned to correct deformities. The fenestrated design allows for the incorporation of bone graft material, promoting fusion at the osteotomy site. The extended length of the screw provides increased stability, aiding in maintaining alignment and promoting healing of the osteotomy.
Uses
Reduction polyaxial fenestrated extended screws are valuable implants in orthopedic surgery, particularly in cases requiring enhanced stability, fusion promotion, and bone graft incorporation. They are utilized by trained orthopedic surgeons following proper surgical techniques and patient-specific considerations.