With this technique, the inside of the joint is seen with a small fiberoptic instrument inserted directly into the knee joint. Because of this, needle arthroscopy can be performed in an outpatient procedure room, saving the expense and bother of a trip to the operating room. Patients who undergo needle arthroscopy can get up and walk right away without restrictions, and usually can return to their regular activities the day after the procedure. Patients with knee arthritis who might in other circumstances go to the operating room to have arthroscopy done for their painful knee can save time and expense by undergoing needle arthroscopy. Many patients with knee arthritis gain relief after arthroscopy even when no tissue is removed.
Relief comes from the flushing of the joint with salt water that occurs during the procedure.
This information is not a tool for self-diagnosis or a substitute for professional care.