Figure 4
From: Posterolateral inter-transverse lumbar fusion in a mouse model
Histological samples retrieved from fused murine vertebrae. Samples have been stained with Pico Sirius red and Alcian blue stain to differentiate between bone and collagen. At 1 week, a large collagen mass overlaying the posterior elements of the vertebrae forms with disruption of local musculature. By the second week postoperatively, a large bony mass that was continuous with the cortex of the vertebrae was present. This mass exhibited a resorptive marrow-like center by week 3. No new collagen or bone was observed in the decortications only spine.