What should you know about pedicle screw types?

A pedicle screw is placed through the pedicle into the vertebra and connected to a rod or related hardware. Designs can vary in diameter, length, thread pattern, head shape and whether the head is fixed or can move to help connect with the rod. Some systems include options designed for different bone quality or spinal levels.

The label of a screw matters less than its fit, placement and role in the construct. The surgeon considers the child’s or adult’s anatomy, the curve or instability being treated, bone strength, the number of levels involved and the planned correction. Patients should not compare a device name alone with another person’s implant.

Before surgery, ask the spine team which design features matter in your case, where the screws will be placed, and how imaging confirms their position. Ask how the hardware connects with rods and what symptoms should be reported after the operation.

After surgery, follow wound, movement and lifting instructions and attend planned reviews. New radiating pain, numbness or weakness should be reported promptly. Background information is available on [Pedicle Screw](/materials/pedicle-screw/), [Scoliosis Surgery](/treatments/spine-care/scoliosis-surgery/) and [Spinal Fusion](/treatments/spine-care/spinal-fusion/).

Seek urgent care after surgery for sudden or worsening weakness, difficulty walking, new bladder or bowel problems, severe pain that is not controlled, loss of feeling around the inner thighs or genitals, or fever with increasing wound redness or drainage.

Ask why a particular screw size or head design is suitable, whether the plan may change during surgery, how placement will be checked, how long restrictions may last, and which symptoms suggest nerve irritation or hardware problems.