What is a commonly cited drawback of computer-assisted knee arthroplasty navigation?

• A. Increases setup time and requires training
• B. Eliminates imaging
• C. Reduces sterilization requirements
• D. Guarantees perfect alignment

Answer: (A)

Navigation in knee arthroplasty adds an extra workflow: the computer-assisted system requires setting up trackers, calibrating instruments, and registering the patient’s anatomy to the navigation platform. This makes the procedure longer at the start and creates a learning curve for the surgical team, since getting accurate data and reliable tracking depends on proper setup and practice. That longer setup time and need for training are the most commonly cited drawbacks, even though the technology aims to improve alignment and component placement.

imaging isn’t eliminated by navigation—systems may still rely on intraoperative data or imaging steps—and the added hardware means more sterilization tasks, not fewer. And while navigation improves accuracy, it does not guarantee perfect alignment because errors can arise from registration, tracking limitations, or soft-tissue changes during the operation.