INTERVERTEBRAL IMPLANT AND SURGICAL METHOD FOR SPONDYILODESIS OF A LUMBAR VERTEBRAL COLUMN

摘要

The invention relates to an intervertebral implant (1) comprising a known head(2) having a conical section (13) and an external thread (14). A centralsection (5, 6, 7, 8) consisting of a plurality of struts extending from thehead (2) to a base structure (3) is formed on the head (2). As a result, large-surface windows (9, 10, 15 11, 12) are open between the head (2) and thestruts (5, 6, 7, 8) and the base structure (3). According to said invention,the external thread (14) of the head (2) is formed on the conical section (13)and the external end section of the head (2) is formed by The protectiveelevation (15) which is convexly curved, from the outside view, and is devoidof sharp edges. The inventive intervertebral implant (1) makes it possible tocarry out a complete distraction, in particular including the ventralcircumference of the adjacent vertebral bodies (30, 31) by eliminating therisk of injury of an adjacent hollow vein or aorta. Simultaneously, a lordosiscan be adjusted by selecting the intervertebral implant (1) geometry. Asurgical method for spondylodesis of a lumbar vertebral column by using saidintervertebral implant (1) is also disclosed.