Robotic surgery: how it works, where it is used and its limits

What is robotic surgery?

In robotic (robot-assisted) surgery the surgeon sits at a console in the operating theatre, viewing a magnified 3D image from a camera inside the body. Using hand controls and foot pedals, they move robotic arms that hold the camera and slim instruments, inserted through several small incisions as in standard keyhole surgery.

The system does not make decisions or operate independently. It filters out natural hand tremor, can scale movements down (a large hand movement produces a small instrument movement) and uses "wristed" instruments that bend in more directions than a human wrist. A bedside assistant surgeon and team are with the patient throughout.

Robotic surgery is one of several approaches used in modern cancer treatment and in many other fields.

How the technology is evolving

Beyond the most widely used multi-arm system, there are now platforms from several manufacturers, single-port systems (all instruments through one incision) and devices that give feedback on the force applied to tissue. Researchers are also exploring the overlay of imaging data during surgery and remote surgery. These developments are promising, but each has to prove its value in clinical studies.

How it compares with open and keyhole surgery

The robot's advantages are most noticeable in narrow, deep spaces such as the pelvis and when fine stitching is required.

Which operations use it?

• Urology: radical prostatectomy for prostate cancer (one of the most common robotic operations), partial nephrectomy for kidney tumours, and bladder surgery.
• Gynaecology: hysterectomy, fibroid removal, endometriosis and some gynaecological cancer operations.
• Bowel surgery: particularly rectal operations for bowel cancer, where the narrow pelvis makes access difficult.
• General surgery: hernias, gallbladder, pancreas, liver, oesophagus and stomach, and metabolic surgery such as gastric bypass.
• Chest surgery: removing a lobe of the lung for lung cancer and tumours in the mediastinum.
• Head and neck surgery: transoral access for some throat tumours.
• Orthopaedics: robotic systems help plan and position knee and hip replacements. Here the principle is different: the robot acts as a precise guide.

Benefits according to current evidence

Compared with open surgery, robotic and laparoscopic operations generally lead to:

• less blood loss and fewer transfusions;
• less pain after surgery;
• a shorter hospital stay and faster return to normal activities;
• smaller scars and fewer wound infections.

Compared with conventional laparoscopy the picture is more nuanced. For some operations, such as those deep in the male pelvis, the robot makes the surgeon's task easier and may reduce the need to convert to open surgery. For many other procedures, studies show similar outcomes, with the main differences being cost and operating time. Cancer outcomes depend above all on the stage of the disease and the skill of the team rather than the type of access.

Risks and limitations

• General surgical risks such as bleeding, infection, injury to nearby organs, blood clots and anaesthetic risks still apply.
• Limited sense of touch: with most systems the surgeon cannot "feel" tissue and relies on vision.
• Learning curve: results improve considerably with experience, so the surgeon's track record is key.
• Duration: set-up and surgery can take longer.
• Cost and access: equipment and disposables are expensive and not available everywhere.
• Any operation may need to be converted to open surgery if that is safer for the patient.

Preparation, the operation and recovery

Preparation is the same as for any major operation: blood tests, an ECG, sometimes imaging, and an anaesthetic assessment. You will usually fast from the night before, and some medicines, such as blood thinners, may be paused on your doctor's instructions.

During surgery the abdomen is usually inflated with carbon dioxide to create space for the instruments. You may be tilted on the operating table, so your heart and lungs are assessed in advance. Mild shoulder-tip pain from the gas is common afterwards and usually settles within a day or two.

Hospital stay depends on the operation, from a single day to about a week. Getting up early, breathing exercises and measures to prevent blood clots are an important part of recovery. Most people return to light activities within a few weeks, but should avoid heavy lifting until their surgeon says it is safe.

How to choose a centre and surgeon

Useful questions to ask your surgeon:

1. How many of these robotic operations do you perform each year?
2. What are your centre's outcomes and complication rates?
3. Why do you recommend a robotic rather than a laparoscopic or open approach in my case?
4. What happens if conversion to open surgery is needed?
5. How will follow-up be organised?

For cancer, the decision to operate should come from a multidisciplinary team. If you are unsure, ask for a second opinion.

When to see a doctor

Robotic surgery is a technique, not a diagnosis. The first step is always an examination and accurate diagnosis by the right specialist, whether a urologist, gynaecologist, gastroenterologist or surgeon. If an operation has been suggested, ask whether a minimally invasive approach suits you. After surgery, contact your team immediately for a high temperature, worsening abdominal pain, bleeding, difficulty passing urine, a swollen and painful calf or breathlessness.

Robotic surgery abroad and in Türkiye

Robotic surgery is still available in a limited number of hospitals in Bulgaria and some other European countries. Large accredited hospital groups in Istanbul have robotic systems and experienced teams, particularly in urology and general surgery, and treat many patients from Europe. Before deciding, check the individual surgeon's experience with the specific robotic procedure, ask for a written treatment plan, and confirm how long you need to stay after surgery and how follow-up will work at home. New City Clinic in Istanbul coordinates the hospital, doctor, hotel, transfers and interpreter. Keep your own doctor informed.