Pre-ignition: Pre-ignition is defined as the ignition of the mixture prior to the spark plug firing. Anytime something causes the mixture in the chamber to ignite prior to the spark plug event it is classified as pre-ignition. The two are completely different and abnormal phenomenon. DETONATION.
Arthroscopy is a way to view and repair the inside of a joint. Your surgeon uses a soft, pencil-thin tube called an arthroscope. This tube has a tiny video camera, a light and fluid-exchange paths. The arthroscope, and other small instruments, are inserted into the knee joint through small incisions.
1 Anti-inflammatory pain medications (NSAIDs) are prescription and nonprescription drugs that help treat pain and inflammation. 2  Cortisone injections may help decrease inflammation and reduce pain within a joint.  Exactly how effective knee arthroscopy is for treatment of arthritis is debatable.