Polyaxial Pedicle Spine Screw

A Polyaxial Pedicle Spine Screw is a medical device used in spinal surgery.
It is designed to stabilize and immobilize the spine by anchoring screws into the pedicles, which are small bony projections on the vertebral bodies.
What sets Polyaxial Screws apart is their ability to move in multiple directions, providing surgeons with greater flexibility during placement.
This allows for better alignment and fixation of the spinal instrumentation.
The Polyaxial design enables the Screw head to rotate, tilt, and angulate, which helps accommodate the natural curvature and variations in spinal anatomy.
Ultimately, the polyaxial pedicle spine screw aids in enhancing surgical outcomes and promoting spinal stability.

Spinal Fusion:Polyaxial pedicle screws are utilized in spinal fusion procedures to stabilize and fuse adjacent vertebrae. By anchoring the screws into the pedicles, they provide a stable foundation for the placement of rods or plates, facilitating the fusion process.
Correction of Spinal Deformities: These screws are employed in the correction of spinal deformities such as scoliosis, kyphosis, or lordosis. By connecting the deformed vertebrae to the corrective instrumentation, polyaxial screws help realign the spine into a more anatomically normal position.
Fracture Fixation: Polyaxial pedicle screws can be used to stabilize spinal fractures. The screws are inserted into the pedicles above and below the fractured vertebra to provide stability and support during the healing process.

Spinal Tumor or Infection Treatment: In cases of spinal tumors or infections, polyaxial pedicle screws may be utilized to provide stability and support to the affected spinal segment after tumor resection or during the treatment of infections.
Revision Surgery:In revision spinal surgeries, where previous instrumentation needs to be removed or replaced, polyaxial pedicle screws are often employed to improve fixation and alignment.
It's important to note that the specific use of polyaxial pedicle screws may vary depending on the patient's condition and the surgeon's approach. The surgeon will determine the most appropriate use of these screws based on individual circumstances.

Diameter: Polyaxial screws are available in various diameters, typically ranging from 4.0 mm to 8.5 mm. The diameter is chosen based on the patient's anatomy and the surgical procedure's requirements.
Length: The length of polyaxial screws can range from 25 mm to 60 mm or more. The appropriate screw length is determined based on the depth of the pedicle and the desired level of fixation.
Material: Polyaxial screws are usually made of biocompatible materials such as titanium or stainless steel. These materials offer strength, durability, and compatibility with the human body.
Thread Design:Polyaxial screws feature threads along their length, which provide stability and engagement with the bone. The thread design may vary, including variable pitch or constant pitch, depending on the manufacturer.

Polyaxial Head:The distinguishing feature of polyaxial screws is their polyaxial head. This head allows for multi-directional movement and facilitates angulation and alignment during screw placement. The polyaxial head typically includes a mechanism to secure the connecting rod or plate.
Screwdriver Compatibility:Polyaxial screws require specific screwdrivers or instruments for insertion and tightening. These instruments are designed to engage with the screw head securely.
It's important to consult with a healthcare professional or refer to the manufacturer's specifications for precise details on a specific polyaxial screw, as different products may have unique features and specifications.

Product Code	Name	Material	Diameter	Lengh
ST002.45.25	Polyaxial Screw, ø4.5mm , L-25	Titanium	Ø4.5	25
ST002.45.30	Polyaxial Screw, ø4.5mm , L-30	Titanium	Ø4.5	30
ST002.45.35	Polyaxial Screw, ø4.5mm , L-35	Titanium	Ø4.5	35
ST002.45.40	Polyaxial Screw, ø4.5mm , L-40	Titanium	Ø4.5	40
ST002.45.45	Polyaxial Screw, ø4.5mm , L-45	Titanium	Ø4.5	45
ST002.55.30	Polyaxial Screw, ø5.5mm , L-30	Titanium	Ø5.5	30
ST002.55.35	Polyaxial Screw, ø5.5mm , L-35	Titanium	Ø5.5	35
ST002.55.40	Polyaxial Screw, ø5.5mm , L-40	Titanium	Ø5.5	40
ST002.55.45	Polyaxial Screw, ø5.5mm , L-45	Titanium	Ø5.5	45
ST002.55.50	Polyaxial Screw, ø5.5mm , L-50	Titanium	Ø5.5	50

Product Code	Name	Material	Diameter	Lengh
ST002.62.30	Polyaxial Screw, ø6.2mm , L-30	Titanium	Ø6.2	30
ST002.62.35	Polyaxial Screw, ø6.2mm , L-35	Titanium	Ø6.2	35
ST002.62.40	Polyaxial Screw, ø6.2mm , L-40	Titanium	Ø6.2	40
ST002.62.45	Polyaxial Screw, ø6.2mm , L-45	Titanium	Ø6.2	45
ST002.62.50	Polyaxial Screw, ø6.2mm , L-50	Titanium	Ø6.2	50
ST002.62.55	Polyaxial Screw, ø6.2mm , L-55	Titanium	Ø6.2	55
ST002.70.35	Polyaxial Screw, ø7.0mm , L-35	Titanium	Ø7.0	35
ST002.70.40	Polyaxial Screw, ø7.0mm , L-40	Titanium	Ø7.0	40
ST002.70.45	Polyaxial Screw, ø7.0mm , L-45	Titanium	Ø7.0	45
ST002.70.50	Polyaxial Screw, ø7.0mm , L-50	Titanium	Ø7.0	50

Product Code	Name	Material	Diameter	Lengh
ST002.70.55	Polyaxial Screw, ø7.0mm , L-55	Titanium	Ø7.0	55

Medical Evaluation:The patient's medical history will be reviewed, including any previous surgeries, medications, allergies, and existing medical conditions. Pre-existing conditions such as diabetes, heart disease, or infections may require additional evaluation and management before the surgery.

Imaging Studies:X-rays, CT scans, or MRI scans of the spine will be performed to assess the spinal anatomy, identify the target area for screw placement, and evaluate the condition being treated (such as spinal deformities, fractures, or tumors).

Blood Tests: Blood tests may be conducted to assess the patient's overall health, check for any underlying medical conditions, and ensure adequate clotting function.

Medication Review: Current medications, including over-the-counter drugs, herbal supplements, and blood-thinning medications, will be evaluated. Some medications may need to be temporarily stopped or adjusted to reduce the risk of bleeding or complications during the surgery.

Fasting: The patient will be instructed to fast (not eat or drink) for a certain period of time before the surgery. This is typically around six to eight hours to ensure an empty stomach during the procedure.

Pre-operative Instructions: The patient will receive specific instructions regarding pre-operative care, which may include information about showering with antiseptic soap before surgery, discontinuing specific medications, and restrictions on eating or drinking.

Anesthesia Evaluation: A pre-operative evaluation by an anesthesiologist will be conducted to assess the patient's suitability for anesthesia. The anesthesiologist will review the patient's medical history, discuss anesthesia options, and address any concerns.

Consent and Education:The surgeon will explain the surgical procedure, potential risks, and benefits to the patient or their guardian. Informed consent will be obtained, indicating that the patient understands and agrees to the surgery.

It's important for patients to follow all pre-operative instructions provided by their healthcare team to ensure a safe and successful surgery. The specific pre-operative procedures may vary based on the patient's individual circumstances and the surgeon's preferences.

Anesthesia:The patient will be given general anesthesia or, in some cases, spinal anesthesia to ensure they are comfortable and unconscious during the procedure.

Patient Positioning: The patient will be positioned face-down on the operating table, and appropriate padding and supports will be used to maintain proper alignment of the spine.

Incision: The surgeon will make a small incision in the midline of the back over the desired level of the spine where the screws will be inserted.

Exposure: Soft tissues, such as muscles and ligaments, will be gently retracted or dissected to expose the bony structures of the spine, including the pedicles.

Pedicle Preparation: The surgeon will use specialized tools, such as drills or awls, to carefully create a pathway or pilot hole in each pedicle of the vertebrae where the screw will be placed. Fluoroscopy (real-time X-ray) may be used to guide the placement and ensure accurate positioning.

Screw Placement: Polyaxial screws are inserted into the prepared pedicle holes using screwdrivers or instruments designed for that purpose. The polyaxial head of the screw allows for multi-directional movement, enabling the surgeon to adjust the screw's angle and alignment to fit the patient's specific anatomy. The screws are typically placed bilaterally, on both sides of the spine, for stability and support.

Connecting Rods or Plates:After the screws are in place, connecting rods or plates made of titanium or other biocompatible materials are attached to the polyaxial heads of the screws. These rods or plates help to stabilize the spine, maintain alignment, and facilitate fusion in certain cases.

Wound Closure: Once all screws and connecting devices are properly positioned, the surgeon will close the incision using sutures or staples. Sterile dressings or bandages will be applied to protect the surgical site.

Post-operative Care: After the procedure, the patient will be monitored in a recovery area before being transferred to a hospital room. Pain management, physical therapy, and other post-operative care instructions will be provided to support the patient's recovery.

It's important to note that the specific procedure may vary based on the patient's condition, the surgeon's technique, and the goals of the surgery. The steps provided offer a general overview of the polyaxial screw placement process in spinal surgery.

Hospital Stay: The patient will typically remain in the hospital for a few days for monitoring and pain management. The length of the hospital stay may vary depending on the patient's overall health and the complexity of the surgery.

Pain Management: Pain medication will be administered to alleviate discomfort during the recovery period. The medical team will determine the appropriate pain management plan, which may include oral medications, intravenous (IV) pain relievers, or patient-controlled analgesia (PCA).

Monitoring:Vital signs, such as heart rate, blood pressure, and oxygen saturation, will be monitored regularly to ensure stability. The surgical site will also be inspected for signs of infection or complications.

Mobilization and Rehabilitation: Physical therapy and mobility exercises will be initiated to help the patient regain strength, flexibility, and mobility. The physical therapist will provide guidance on exercises, movements, and any restrictions to promote healing and prevent complications.

Wound Care:The surgical incision site will require regular dressing changes and monitoring for signs of infection. The medical team will provide instructions on how to keep the incision clean and dry, as well as when to follow up for suture or staple removal.

Medications:Antibiotics may be prescribed to prevent infection, and other medications, such as muscle relaxants or anti-inflammatory drugs, may be given to manage symptoms or promote healing. The patient should follow the prescribed medication regimen as instructed.

Follow-up Appointments: The patient will be scheduled for follow-up appointments with the surgeon to assess the progress of the recovery, review imaging studies, and address any concerns or questions.

Activity Restrictions:The patient will be advised on activity restrictions, which may include limitations on lifting heavy objects, bending, twisting, or engaging in strenuous activities. Compliance with these restrictions is crucial for the healing process.

Emotional Support: Spinal surgery can have an emotional impact on patients. It's important to have a support system in place to address any emotional or psychological concerns. Counseling or support groups may be beneficial for some patients.

It's essential for patients to closely follow the post-operative instructions provided by their healthcare team to optimize healing, minimize complications, and achieve the best possible outcome. The specific post-operative care plan may vary depending on the individual patient, the extent of the surgery, and the surgeon's recommendations.