| 摘要 |
The invention concerns an intervertebral stabilising device, designed to lin k two neighbouring vertebrae (2, 2'), characterised in that it comprises an upper stop element (26), integral with the upper vertebra (2) and a lower st op element (34) integral with the lower vertebra (2') said extra-disc stop elements (26, 34) having mutual support surfaces (26', 38) adapted to allow a mutual rotation of said upper (2) and lower (2') vertebrae about the patient 's transverse and sagittal axes, and to prevent a mutual rotation of said two vertebrae about a vertical axis, said support surfaces being further adapted to allow mutual translation of said vertebrae in a single direction along th e sagittal axis, to allow translation between said two vertebrae in both directions along the vertical axis, and to prevent translation between said two vertebrae in both directions along the transverse axis.
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