osteotome

Definitions

noun In surgery, a sawlike instrument for cutting bones, specifically one for cutting the bones of the fetal cranium when it is necessary to reduce it considerably to permit delivery.
noun A form of chisel used to divide the bone in the operation of osteotomy for the correction of deformity.

noun a medical tool used for cutting or marking bone, used in dental implantation
noun a kind of bone saw used in the 19th and early 20th centuries

Sorry, no etymologies found.

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If there is no prospect of spontaneous rectification, the upper end of the tibia should be divided with the osteotome, and the limb straightened.

Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. Alexander Miles 1893
Jones 'wrench, used in the same manner as for club-foot, or the parts are exposed by operation; the bone is divided by means of an osteotome, the foot forcibly inverted, and the limb put up in the same way as in a recent fracture.

Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. Alexander Miles 1893
When the deformity is comparatively slight, the bone is divided with an osteotome and straightened; when there is marked bending or angling, a wedge is taken from the convexity, as in the operation for bow-leg.

Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. Alexander Miles 1893
All intermediate forms are met with, and when confined to the maxilla, the resulting disfigurement may be improved or remedied by operation; the cheek is raised or reflected and the bone shaved away with a strong knife or osteotome.

Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. Alexander Miles 1893