Thanks for your query.
As your trigeminal ganglia damaged during surgery, now you are experiencing sever shooting pain in facial area, called Trigeminal Neuralgia
You are also having arthritis
in neck (cervical spondylosis
) which may irritate or compress nerves and cause neuralgia. It should be made sure if these two conditions are related or not, if not then both diseases have separate treatment plan, however muscular relaxants can help in both cases.
If you have tried all the analgesics and other medication but failed then you are advised to visit qualified neurosurgeons, orthopedist to assess your condition and surgery may be needed.
Hope it helps.