This clinical investigation is a prospective, non-interventional, uncontrolled clinical trial, organized to generate clinical data on performance and safety of Orthoss® as a bone graft extender mixed with local bone at ratio of 1:1 and pedicle bone marrow aspirate in lumbar spondylodesis involving 1-2 levels. (Orthoss® is CE marked for this indication).~If you as a patient have a wear and tear disease of the spine, an operation serves to restore the stability of the spinal column. In order to promote a bony build-up of the lumbar spine segment (fusion), bone replacement material is used in your case as standard. The aim of this observational study is to determine fusion in order to address clinical performance of that bone replacement material.
This study aims to evaluate the performance and safety of the Orthoss® as a bone graft extender in lumbar spondylodesis involving 1-2 levels (L4-L5 and/or L5-S1).