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Powered systems designed for bone and soft tissue resection during arthroscopic joint (e.g., knee, shoulder) surgery procedures. These systems typically consist of a power supply unit (electric or pneumatic), a display of operational characteristics, and dedicated software that provides optimal parameters for a procedure and/or stores previous settings; one or more rotary handpieces with several speeds that can operate different sizes of a variety of burs and blades (either straight or curved) and other rotary instruments such as a sagittal saw. Smaller and lighter handpieces are usually intended for surgery in small joints (e.g., wrist, ankle). Arthroscopic shavers are used in combination with fiberoptic video arthroscopes, irrigation systems, and other manual instruments. They are most commonly used to debride defective cartilage (e.g., meniscus repair or meniscectomy) and remove the inflamed inner lining of the joint (synovectomy).
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