In the case of inflammation, it refers to the movement of white blood cells through the capillary wall, into the surrounding tissues.
The arthroscope includes a small (typically 4 mm in diameter) optic scope rod to view the joint.
This swelling can interfere with the arthroscopic procedure by collapsing the surgical space, or migrating into the patient's neck and causing airway blockage.
[5] Risk factors for fluid extravasation include procedure length (>90–120 min), obesity, and age (>45–50) with accompanying lack of muscle tone.
[6] Shoulder arthroscopy is typically limited to about 90–120 minutes before the swelling from fluid extravasation interferes with the procedure, and presents a potential risk to the patient.