Between the third and fourth cervical vertebral bodies, there's still one needle left. This is the thinnest one and is saved for last due to its high level of difficulty, even harder to extract than those in the pericardium.
The structure filling the intervertebral space is the intervertebral disc; the needle is planted inside it.
After rinsing the abdominal cavity and retracting the equipment, Li Guodong sutured the three small incisions on the abdomen.
Yang Ping then shifted the battlefield to the cervical spine. The baby's cervical spine was very small; Yang Ping originally planned to use ultrasound positioning and then remove the thin needle under an endoscope.
