triangulation
The optimal positioning of laparoscopic instruments and camera to achieve effective surgical manipulation.
Full Definition
Triangulation is a fundamental principle of laparoscopic surgery referring to the geometric arrangement of the camera and working instruments to optimize surgical dexterity and visualization. Proper triangulation requires positioning ports so that the camera and two working instruments form a triangle, with the target tissue at the apex. This configuration allows for natural hand movements and bimanual coordination similar to open surgery. Poor triangulation can result in instrument conflicts, awkward positioning, and compromised surgical precision. The angle between instruments should ideally be 60-90 degrees.
Usage
Usage note: Used to describe spatial relationships in laparoscopic setup.
In Context
- "Port placement was modified to improve triangulation for the dissection." — Operative report
- "Optimal triangulation was achieved with the camera and bilateral working ports." — Surgical procedure note