Every week, the BBC Focus magazine solves some doubts of its readers. Below is a selection of their responses for the curious.

How does robotic surgery work?

image source, Getty


Robots for surgery allow three times greater precision in the doctor’s hand.

The Da Vinci Robotic Surgery System (pictured) consists of a four-armed, spider-legged apparatus operated by a surgeon from a control panel in the operating room, a few feet away from the patient.

The surgeon uses it to control, for example, the tip of the scalpel with sub-millimeter accuracy.

The incisions can be made smaller than with conventional methods and there is less bleeding, reducing the recovery period for prostate surgeries from six to two weeks.