Assistant ergonomics in robotic surgery

For decades, the operating room has been a place where human hands perform delicate work, guided by the steady rhythm of a surgeon's movements. In recent years, a new partner has joined this dance: the surgical robot. These machines allow surgeons to operate with incredible precision through tiny incisions, offering patients faster recovery and fewer complications. The surgeon sits at a console, looking into a high-definition screen and controlling robotic arms that mimic their hand movements with perfect steadiness. This setup is often praised as the pinnacle of ergonomic design for the person at the controls, shielding them from the physical strain of traditional surgery. However, the robot does not work alone. Beside the patient, a second surgeon stands at the bedside, acting as the robot's hands and eyes. This assistant must manage instruments, clear the view, and react instantly to the surgeon's commands, all while navigating a crowded space filled with mechanical arms and cables.

While much attention has been paid to the comfort of the surgeon at the console, the experience of the person standing by the table has remained largely in the shadows. This gap in knowledge is significant because the physical demands of this role are unique and intense. The assistant must maintain awkward postures for hours, reach into tight spaces, and constantly adjust their position to avoid bumping into the robot. Over time, these repeated, constrained movements can lead to pain and injury, much like the strain a carpenter might feel from holding a heavy tool in an uncomfortable position for too long. Understanding exactly how this role affects the human body is the first step toward making the operating room safer for everyone involved.

A team of researchers set out to uncover the reality of this experience by asking a large group of surgical assistants to share their stories. They sent an anonymous survey to 122 surgeons and trainees from around the world who work with robotic systems. These participants came from various medical fields, including urology and general surgery, and had spent at least a year assisting in these complex procedures. The researchers asked detailed questions about their daily work: how many surgeries they performed, how long they stood, where they positioned their monitors, and most importantly, where and how often they felt pain. They also asked about the mental pressure of the job and how comfortable they felt in their workspace. The goal was not just to count the injuries, but to understand the specific conditions that made the job harder or easier.

The results revealed a picture of significant physical strain. Nearly three out of four assistants reported experiencing pain related to their surgical work. The most common areas of discomfort were the neck, the lower back, and the upper back. These symptoms were not rare, fleeting aches; for many, the pain occurred weekly or even monthly. Despite this high level of discomfort, very few assistants relied on medication to cope, suggesting they often managed the pain through sheer endurance. The study found that the work environment itself played a major role. Most assistants worked for long stretches without a break, often standing for over an hour and a half at a time. They frequently reported feeling cramped, with limited space to move around the patient. Perhaps most strikingly, nearly all of them experienced collisions between their bodies or instruments and the robotic arms, forcing them to twist or contort their bodies to avoid interference.

The researchers also looked for clues about who was most likely to suffer from this pain. They discovered that physical characteristics mattered more than one might expect. Taller assistants were more likely to report pain, while those with larger hands found the work more comfortable. This suggests that the tools and the operating room setup may not be designed for everyone. If the instruments are built for larger hands, a surgeon with smaller hands might have to grip them awkwardly, leading to extra strain. Similarly, if the room is set up for an average height, a very tall person might have to hunch over, stressing their back and neck. The study also found that having more than two monitors to look at seemed to help reduce pain, likely because it gave the assistant a better view without having to twist their neck as much.

Beyond the physical aches, the assistants faced a heavy mental load. Using a standard scale to measure stress, the team found that the assistants felt a high level of mental and physical effort, comparable to the demands of a very intense, high-stakes task. They felt a strong sense of urgency and time pressure, yet they also felt they were performing their jobs well. The frustration level was moderate, indicating that while the work was difficult, it was not entirely overwhelming. However, the overall sense of comfort in the operating room was low. Most assistants felt comfortable only occasionally, and very few felt they were always in a good position. This disconnect between high performance and low comfort highlights a critical issue: the current setup forces these skilled professionals to work in ways that are not sustainable for their long-term health.

The study concludes that the role of the bedside assistant in robotic surgery is currently associated with significant pain and discomfort. The findings suggest that the way operating rooms are built and the tools they use need to change to fit the people who work there. Simple adjustments, such as better monitor placement, more space to move, and instruments designed for a wider range of hand sizes, could make a real difference. The researchers emphasize that improving the ergonomics of the operating room is not just about making the job easier; it is about protecting the health of the surgical team so they can continue to provide the best care for their patients. By paying attention to the physical needs of the person standing at the table, the medical community can ensure that the future of surgery is safe and sustainable for everyone involved.