Everything You Need to Know About Robotic-Assisted Knee Replacement Surgery in PA

Medically reviewed by Dr. Cherian, Dr. Jee, Dr. Renz, Board-Certified Orthopedic Surgeons, Hip & Knee Specialists.

If you're living with chronic knee pain in Pennsylvania and your orthopedic surgeon has mentioned robotic-assisted knee replacement surgery, you likely have questions. How does it work? Are you a candidate? What does recovery actually look like?

Robotic-assisted knee replacement has quickly become one of the most requested procedures at Lancaster Orthopedic Group. In some patients, it allows for more precise implant placement, less disruption to surrounding tissue, and often a faster return to daily activities.

This guide walks you through everything you need to know before scheduling a consultation.

What Is Robotic-Assisted Knee Replacement Surgery?

Robotic knee replacement is a total or partial knee replacement performed with the assistance of a surgical robotic system.

NOTE:

???? The surgeon is always in control. The robot does not perform the surgery.

Instead, the robotic system acts as a highly precise tool that helps guide the surgeon based on a 3D model of your knee. This allows for implant placement tailored specifically to your anatomy, rather than relying on generalized positioning.

How Robotic-Assisted Surgery Differs from Traditional Knee Replacement

Not every patient needs robotic-assisted surgery. In many cases, the traditional procedure is right for the patient. Your surgeon will discuss options with you. Robotic-assisted knee replacement may enhance several parts of the surgical process:

• Pre-operative planning: A 3D model of your knee is created before surgery
• Real-time data during surgery: The system measures joint tension and alignment
• Precision bone cuts: The robotic arm helps ensure cuts stay within exact boundaries
• Potential for less tissue disruption: Which may improve early recovery

Traditional knee replacement is still highly effective. The benefit of robotics is increased consistency and personalization—especially for patients with more complex anatomy. Your surgeon will discuss options with you.

Who Is a Good Candidate for Robotic Knee Replacement?

You may be a candidate if you have:

• Advanced knee osteoarthritis confirmed by imaging
• Daily pain that limits walking, stairs, or sleep
• Limited improvement from physical therapy, injections, or medication
• Structural misalignment (bow-legged or knock-kneed)
• Interest in partial knee replacement options

Robotic assistance is also commonly used in revision procedures, where precision is especially important.

What Happens During Surgery

Here’s what a typical robotic knee replacement procedure looks like:

1. Anesthesia is administered (often spinal with sedation)
2. A single incision is made over the knee
3. The robotic system maps your knee and confirms the surgical plan
4. The surgeon performs bone preparation using robotic guidance
5. Trial implants are placed and joint balance is assessed
6. Final implants are secured
7. The incision is closed and recovery begins

Most patients begin walking within hours after surgery.

Recovery Timeline: What to Expect

Recovery varies by patient, but most follow a general timeline:

• Day 1: Walking with assistance; often discharged same day or next day
• Weeks 1–2: Begin outpatient physical therapy; swelling and stiffness peak
• Weeks 3–6: Walking independently; many resume driving
• Month 3: Return to low-impact activities like golf, hiking, or cycling
• Months 6–12: Continued strength and mobility improvements

At Lancaster Orthopedic Group, surgery, physical therapy, and follow-ups are all coordinated within one local care team.

Risks and Realistic Expectations

As with any surgery, knee replacement carries risks, including:

• Infection
• Blood clots
• Joint stiffness
• Implant wear over time

Robotic assistance does not eliminate these risks, but it can improve surgical precision and early functional outcomes. Your surgeon will review your individual risk profile before proceeding.

Cost and Insurance in Pennsylvania

Robotic knee replacement is typically covered by Medicare and most commercial insurance plans, just like traditional knee replacement. Out-of-pocket costs depend on:

• Your specific insurance plan
• Deductible and coverage details
• Surgical setting (hospital vs. outpatient center)

Our team provides cost estimates before scheduling surgery.

Frequently Asked Questions

Is robotic knee replacement better than traditional knee replacement?

It depends on your anatomy and condition. Robotics-assisted may improve precision and consistency, but both approaches have strong long-term outcomes.

How long does the procedure take?

Most surgeries take 60–90 minutes, with a half-day total time at the surgery center.

When can I drive again?

Typically 4–6 weeks after surgery, depending on which knee was operated on and medication use.

Will the implant trigger airport security?

Possibly. Implants are made of metal, but TSA agents are familiar with the issue.

How long does a knee implant last?

Most modern implants are designed to last 20–25 years or longer.

Wrapping Up

If knee pain is limiting your daily life, robotic-assisted knee replacement may be the next step toward getting back to the activities you enjoy. At Lancaster Orthopedic Group, our hip and knee specialists perform robotic-assisted joint replacement regularly—combining advanced technology with decades of surgical expertise.

Call 717-560-4200 or request an appointment online to get started.