Are removed from the vertebral column in place of the portion of the intervertebral disk, the vertebra or the vertebra which, as the space support, to insert between the Vertebra bodies of the vertebral column in plant 1 in order, in order that alteration the length of the said in plant 1, mutually position shift possibility the 1st and 2nd in plant part vis-a-vis 2,3 and aforementioned axis, substantially being directed by axis direction vertically, you remove and possibly it locks due to the means because have with joint possible patch attaching kick plate 5a and 5b for the free edge of in plant part 2,3 in those which, you succeed and you attach, kick plate 5a and 5b circle orWe have round based form 8, in order for the said circle or the peripheral shape of round based form 8, circle or to form the plane surface form which superposes round multiple board extensions 9,10, partly substantial, we become deformed, aforementioned multiple board extensions 9,10 have had the diameter which differs mutually, or, are superposed at the superposition extent which differs with aforementioned circle or round based form 8.< Choice figure >Drawing 3脊柱から取り外された椎間板、椎骨、または椎骨の一部に代わって、スペース保持体として、脊柱の椎体の間に差し込むためのインプラント1であって、該インプラント1の長さを変更すべく軸線方向に互いに位置シフト可能な第1及び第2のインプラント部分2,3と、前記軸線に対し実質的に垂直に向けられて、取り外し可能に固定するための手段によってインプラント部分2,3の自由端に接続可能な継ぎ付け板5a,5bとを備えたものにおいて、継ぎ付け板5a,5bが円形または丸形のベース形状8を備えており、該円形または丸形のベース形状8の周縁形状が、実質的に円形または丸形の複数の板延長部9,10を、部分的に重ね合わせた平面形状をなすように変形されており、前記複数の板延長部9,10は、互いに相異なる径を有しているか、または、前記円形または丸形のベース形状8との相異なる重ね合わせ度合いで重ね合わせられている。【選択図】図3
