The finger reattachment surgery for the five-year-old boy started at 12:30 PM and didn't end until nearly 9:00 PM.
The blood vessels in the five-year-old's finger were barely 0.3 millimeters in diameter.
This made suturing them an order of magnitude more difficult than for an adult.
Fortunately, this was just within Yan Feifan's capabilities.
If they had been any thinner—with a diameter below 0.2 millimeters—he would have been unable to do anything.
Although the boy's finger was successfully reattached, it had been crushed and severed by a door, causing severe trauma to the muscle, bone, nerve, and other tissues at the site of the injury.
While debriding the wound, Yan Feifan had to remove a significant amount of necrotic muscle and nerve tissue, along with fragments of the shattered finger bone.
As a result, the boy's reattached index finger was shortened from three segments to two.
This slightly impacted both its future function and appearance.
