A new type of bone biopsy unit that uses standard engineering and machinery principles of self cleaning and clearance allows for greater ease and more accurate performance of biopsy. Its use consistently yields excellent biopsy material. Included is a semi-rigid K wire, which may be used with a drill, for ease of insertion and a stylet in a cannula, which allows for multiple biopsies without reinsertion. The needle is compared with standard saw tips (trephines) and sharpened cannulas.
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