Professional
Technical
IVT
fusion rate
Percentage of patients achieving solid bony union following spinal fusion surgery.
Full Definition
A key outcome measure in spine surgery representing the proportion of patients who achieve solid osseous bridging between fused vertebral segments within a specified timeframe, typically 12-24 months post-operatively. Fusion is assessed using radiographs, CT scans, or flexion-extension studies to evaluate bridging bone formation, absence of motion, and lack of hardware loosening. Fusion rates vary by surgical technique, graft material, patient factors, and assessment methodology, making standardized reporting important for comparing surgical outcomes.
Usage
Usage note: Express as percentage and specify assessment timeframe. Distinguish from clinical success rate.
In Context
- "The study reported a 95% fusion rate at 12 months using rhBMP-2." — clinical research
- "CT scan at six months showed evidence of solid fusion in accordance with the high fusion rate for this technique." — follow-up assessment
Also known as
fusion success rate
arthrodesis rate
Contrasted with
pseudarthrosis rate
Don't confuse with
union rate
healing rate