The objectives of this clinical observational study is to evaluate the safety and efficacy (performance) of the Neo Pedicle Screw Systemâ„¢ and the Neo Cage Systemâ„¢ interbody fusion device. To demonstrate non-inferiority of safety and function to an historical control from the published medical literature on competitive devices.
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Change in patient´s function from baseline to 12 months
Timeframe: 12 months
The rate of cage migration in cage-plus-screw systems.
Timeframe: 12 months and 24 months post operatively
The rate of pedicle screw loosening in screw only and cage-plus-screw systems.
Timeframe: 12 months and 24 months post operatively