Knee arthroscopy. Image 1 of 2. Surgeon inserting an arthroscopic instrument into a patient's knee joint. An arthroscope (narrow telescope) will be inserted through the instrument to view inside the joint. The arthroscope contains optic fibres that transmit an image of the joint onto a video screen. Knee arthroscopy allows the diagnosis of knee problems such as arthritis and inflammation and can be used to repair damaged tissue and cartilage. During the procedure, small tissue samples may be taken (biopsies), which can help diagnose infections. To see an image of the arthroscope being inserted into the knee joint, see M440/228.
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