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Bone Health Glossary · Fractures & procedures

Spinal fusion

Also called: back fusion surgery

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§ Standard Definition
Topic
Fractures & procedures
Entry
Bone Dictionary
In plain English

What it means

Spinal fusion is a surgery that permanently joins two or more vertebrae together using bone graft and hardware like screws and rods, so that section of the spine no longer moves.

Why it matters for your bones

If you have osteoporosis, bone quality affects how well hardware holds and how the fused spine handles stress over time.

Spinal fusion is surgery that joins two or more vertebrae into one solid piece of bone, so they no longer move against each other. Surgeons often use bone graft material, screws, and rods to hold the bones in place while new bone grows and fuses them together over time, similar to how a fracture heals.

It's typically used for problems like spinal instability, severe spondylolisthesis, significant scoliosis, or sometimes after a vertebral compression fracture or spinal stenosis surgery when the spine needs extra support. Recovery usually involves a period of restricted movement and physical therapy, with healing of the fusion taking months.

Because it changes how the spine moves, fusion can shift extra stress onto the vertebrae above and below the fused area over the years. People with osteoporosis or low bone density may have added considerations around hardware stability and healing, so this is always a decision made with a spine surgeon who knows your full history and bone health.

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✦ The aha

With osteoporosis, bone quality shapes how well spinal fusion hardware holds up over time.

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Wondering what kind of spine injury might lead to needing fusion? A vertebral compression fracture shows how weakened spine bone can collapse in the first place.

Vertebral compression fracture
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Related words

Vertebral compression fracture
Established Science

A vertebral compression fracture is when a bone in the spine collapses or flattens, often because the bone is…

Spondylolisthesis
Standard Definition

Spondylolisthesis is when one spinal bone slips forward out of place over the one below it, most often in the lower…

Spinal stenosis
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Spinal stenosis is a narrowing of the spaces in your spine that can press on the spinal cord or nearby nerves, often…

Scoliosis
Established Science

Scoliosis is an abnormal sideways curve of the spine, which can affect posture, back comfort, and the accuracy of…

Kyphoplasty
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Kyphoplasty is a minimally invasive surgery that uses a balloon and bone cement to repair and stabilize a collapsed…

Vertebroplasty
Established Science

Vertebroplasty is a procedure where a doctor injects bone cement into a fractured spinal vertebra to help stabilize…

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