Vertebral prosthesis for surgery for the replacement of a vertebra by a malignant tumor

摘要

The tumour-affected vertebra is removed and the prosthesis (2) is inserted in the closed position, with the minimum height thereof. Thereafter it is opened up until a sufficient height is obtained to restore the anatomical continuity of the column to make it capable of supporting the load and allow mobility of the patient. The prosthesis is made of steel and comprises three parts, a centre part (4) and an upper and a lower platform (5) and (6) which are moveable in opposite directions to extend the height of the assembly, until they bite into the body of the neighbouring vertebra. The invention is applicable in surgery of malignant tumours of the dorsal and lumbar portions of the spinal column. IMAGE IMAGE