After his surgery, Yang Ping went to check on the Elderly Director, who was already able to walk around. Yang Ping conducted a physical examination and found that the muscle strength and sensation in both lower limbs were normal, indicating that there was no rebound edema after the nerve root was released from compression.
There are many causes of sciatic nerve pain, with lumbar disc herniation being the most common. Other causes include tumors in the vertebral canal or the sciatic nerve itself, compression of the sciatic nerve at the piriformis muscle, sciatic neuritis, herpes virus infection, and so on.
The Elderly Director had a neurinoma at lumbar 5 nerve root, which is mostly benign. The tumor removed during the surgery appeared to have a complete capsule, which also matched the characteristics of a benign tumor, but the final diagnosis still relied on pathology.
