Implant fixation

A spinal implant system, comprising:

• a spinal anchor implant extending between a proximal end and a distal end and shaped to be anchored in a human spine with the distal end extending into the bone tissue of a vertebra from a posterior or lateral side thereof, the spinal anchor implant having a proximal portion forming the proximal end;
• and a support plate, the support plate being shaped to be placed against the posterior or lateral side of the vertebra, the support plate having an anchor receiving structure, wherein the anchor implant extends through the anchor receiving structure into the bone tissue when the anchor implant is anchored in the bone tissue;
• wherein the implant system comprises a thermoplastic material in a solid state, the thermoplastic material being shaped and equipped to be placed relative to the anchored anchor implant and the support plate and for at least a flow portion of which to be made flowable by the impact of impinging energy so as to bridge and at least partially fill a gap between the anchor implant and the support plate;
• whereby after re-solidification of the thermoplastic material, the support plate supports the anchored anchor implant in a force transmitting manner via the thermoplastic material.