Observational Study to Evaluate the STALIF® C FLX, STALIF® M FLX, STALIF® L FLX Cages and FORTOS-C®

Sponsor-initiated, Retrospective, Monocentric, Non-interventional Clinical Observational Study to Evaluate the STALIF® C FLX, STALIF® M FLX, STALIF® L FLX Cages and FORTOS-C®

Post-operative clinical outcome data on the devices used to treat spinal diseases are collected and evaluated in order to analyze the safety and performance of the implants used.

Inclusion Criteria:

- Indications according to IFU

Surgical implantation of STALIF® C or M FLX device for 1 or 2 levels between:

• STALIF® C FLX: C2-T1 (cervical)
• STALIF® M FLX: L2-S1 (lumbar)
• STALIF® L FLX: L2-L5 (lumbar)

Surgical implantation of FORTOS-C® for the fusion of up to 3 levels between:

• FORTOS-C®: C2 - T1 (cervical)
• Age: ≥ 21 years
• For the evaluation of the questionnaires (NDI or ODI, VAS neck and VAS arm or VAS leg and VAS back), only patients with the questionnaire available at the time of admission (pre-op) and at least at 12-months FU will be included

Exclusion Criteria:

• Relative and absolute contraindications according to IFU