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Surgical chisels designed to cut the elongated, flattened bone forming the middle part of the thorax (i.e., the sternum). These chisels typically consist of a sturdy handheld, manual instrument including a flat blade with a cutting edge that is beveled on one side (either rectangular or rounded) that is conformed at a right angle with the shaft of the instrument and an integral straight or cross handle. Sternum chisels are used mainly during thoracic (e.g., pulmonary) surgery to open the thoracic cavity.
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