Decompression creates space
A decompression removes tissue that is pressing on a nerve or the spinal cord. Depending on the diagnosis, that tissue may be disc material, bone, or ligament.
Fusion provides stability
Fusion uses bone graft to join selected vertebrae over time. Implants may support the segment while healing occurs. The fused levels lose movement, which is part of the intended stabilizing effect.
Why they may be combined
Some conditions involve both compression and instability. In other cases, the amount of decompression needed may call for added support. Not every decompression requires a fusion.
An informed decision
Ask what symptom each part of the operation is intended to address, why fusion is or is not needed, and what tradeoffs to expect in movement and recovery.
Your care team’s individual instructions take priority over general educational information.
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