If you have been told you need spine surgery, you may have come across the term “robotic spine surgery” and wondered what it actually means — and whether it matters for you. The word “robotic” can conjure images of a machine operating independently. The reality is more precise and, for patients, more reassuring than that. Robotic spine surgery is a tool that makes surgeons more accurate. The surgeon is always in control. The robot never operates independently.
Here is a clear explanation of what robotic spine surgery is, how it works, what the evidence shows, and what it means for your care if your surgeon uses it.
What Robotic Spine Surgery Actually Is
Robotic spine surgery is a navigation and guidance system that allows a surgeon to plan implant placement — typically pedicle screws — with precision on a three-dimensional model of the patient’s own anatomy before making a single incision, and then execute that plan with real-time robotic guidance during the procedure. The robot does not make decisions. It holds instruments along a pre-planned trajectory with a degree of precision that the human hand alone cannot consistently achieve.
The most widely used robotic platform in spine surgery in the United States is the Mazor X Stealth Edition (Medtronic), which integrates robotic guidance with O-arm intraoperative CT imaging and Stealth navigation. This is the system Dr. Sardar uses at the Och Spine Hospital at NewYork-Presbyterian. Other platforms include the ExcelsiusGPS (Globus Medical) and the ROSA Spine (Zimmer Biomet).
The Central Challenge: Pedicle Screw Placement
To understand why robotic guidance matters, it helps to understand the challenge it is designed to solve.
Pedicle screws are the anchor points of most modern spinal instrumentation. They are placed through the pedicle — a narrow bony bridge connecting the vertebral body to the posterior elements of the spine — and into the vertebral body itself. A correctly placed pedicle screw provides the strongest possible fixation for rods, plates, and other hardware.
The pedicle is narrow. In some patients, particularly those with small anatomy, deformity, or osteoporosis, it may be only a few millimeters wide. A screw placed even a few millimeters off-axis can breach the pedicle wall and injure adjacent nerves, vessels, or the spinal cord. Traditionally, pedicle screws were placed using anatomical landmarks and fluoroscopic X-ray guidance — a highly developed skill, but one that relies on two-dimensional imaging and the surgeon’s spatial judgment.
Robotic guidance transforms this from a freehand procedure guided by 2D images into a precisely planned trajectory executed on a real-time 3D model of the patient’s individual anatomy.
How It Works: Step by Step
1. Preoperative Planning
Before surgery, the patient’s CT scan is loaded into the robotic planning software. The surgeon plans every screw trajectory on a three-dimensional model of that specific patient’s anatomy — choosing the optimal entry point, angle, and depth for each screw at each level. This planning accounts for the patient’s individual pedicle dimensions, bone quality, and the surgical goals. The plan is finalized before the patient enters the operating room.
2. Intraoperative Registration
At the start of surgery, the robotic system registers the patient’s actual spinal anatomy — as it exists on the operating table — to the preoperative plan. This registration step aligns the virtual plan with the physical patient in real time, accounting for any differences in patient positioning. The accuracy of this registration step is fundamental to the accuracy of screw placement.
3. Robotic-Guided Execution
Once registered, the robotic arm positions itself along the pre-planned trajectory for each screw. The surgeon then drills and places the screw through the robotic guide. At each step, the system tracks the position of the instruments in real time relative to the patient’s anatomy. If the patient moves even slightly during the procedure, the system detects the shift and alerts the surgeon.
What the Evidence Shows
The clinical literature on robotic spine surgery has grown substantially over the past decade. Key findings include:
- Higher pedicle screw accuracy — multiple studies have demonstrated that robotically guided pedicle screws achieve clinically acceptable accuracy rates of 95–98%, comparable to or exceeding freehand and fluoroscopy-guided techniques, particularly in anatomically challenging cases such as deformity and revision surgery
- Reduced radiation exposure — robotic navigation significantly reduces the need for repeated intraoperative fluoroscopy, lowering radiation exposure for both the patient and the surgical team over the course of a procedure
- Reduced revision rates for malpositioned screws — intraoperative CT confirmation at the end of the case allows any malpositioned screw to be identified and corrected before the patient leaves the operating room, avoiding the need for a return to surgery
- Particular benefit in complex cases — the accuracy advantage of robotic guidance is most pronounced in anatomically challenging situations: severe deformity, revision surgery through scar tissue, small pedicles, osteoporotic bone, and cervicothoracic junction cases
What It Means for Patients
For patients, the practical implications of robotic spine surgery are straightforward:
- Your surgeon has planned your specific anatomy before the first incision. Every screw trajectory is designed for your spine — not a generic template.
- The risk of a return to surgery for a malpositioned screw is minimized. Problems that would previously only be discovered on postoperative imaging are identified and corrected intraoperatively.
- You receive less radiation than with traditional fluoroscopy-guided techniques.
- The benefit is greatest if your case is complex. If you have scoliosis, kyphosis, revision surgery, or other anatomically challenging features, robotic guidance provides a meaningful accuracy advantage over traditional approaches.
What Robotic Surgery Does Not Change
It is equally important to understand what robotic surgery does not do. It does not replace surgical judgment. It does not plan the operation — the surgeon does that. It does not decompress nerves, correct deformity, or achieve fusion — those steps are performed entirely by the surgeon. It does not make an inexperienced surgeon safe, or a poorly planned operation well-executed.
Robotic guidance is a precision tool that helps an experienced surgeon execute a well-planned operation more accurately. It is most valuable in the hands of a surgeon who uses it regularly, understands its limitations, and performs the full range of procedures it supports — not as a marketing differentiator, but as a genuine component of a high-standard surgical practice.
Dr. Sardar’s Use of Robotic Navigation
Dr. Sardar uses the Mazor X Stealth Edition robotic navigation system as standard for instrumented spinal procedures at the Och Spine Hospital at NewYork-Presbyterian. This includes scoliosis correction, complex deformity reconstruction, revision surgery, lumbar fusion.
He adopted robotic navigation not because it is new, but because the evidence supports its use as the standard of care for accurate, safe instrumented spine surgery — particularly in the complex deformity and revision cases that define his practice.
About Dr. Zeeshan Sardar
Dr. Sardar is Co-Chief of Spinal Deformity Surgery at NewYork-Presbyterian / Columbia University and uses robotic-assisted navigation as standard in all instrumented spine procedures. He treats adolescent and adult patients with scoliosis, kyphosis, complex deformity, revision surgery, and degenerative spine conditions. To schedule a consultation, call 212-932-5187 or visit the contact page.
This article is for educational purposes only and does not constitute individualized medical advice. Please consult a qualified spine specialist to discuss your specific condition.