In surgical procedures, the last knot of a suture is crucial because it must hold the wound firmly in place to allow proper healing. But many surgeons struggle to apply the perfect tension. Tie it too tightly, and it can cut off the blood supply to the tissue, causing damage. However, if it is not tight enough, the wound might leak, or the repair could fail. Robotic surgeons also face difficulties because their electronic sensors lack the necessary tactile feedback or are too large for delicate procedures.
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