### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hi My Dad 61 yrs old is had a back pain complains so after and MRI the result is L5/S1 DISC - posterial protrusion indenting the thecal sac and impinging on the traversing roots at the lateral recess; mild bony canal narrowing is present. L4/5 Disc - Diffuse posterior budge with annular tear indenting the thecal sac and touching the traversing roots at the lateral recess. L3/4 Disc - Posterior central protrusion indenting the thecal sac and impinging on the traversing roots at the lateral recess. Whole spine survey: c3/4 and c5/6 discs - posterior protrusion indenting the thecal sac and cord . no cord edema seen. - is surgergy necessary for this?

### output:

Hello, Welcome to Chat Doctor. I am Chat Doctor Psychiatry from India. I have read your question carefully and understood it. Furthermore, I can understand your concern. Furthermore, I will try my best to answer your query. The condition you are mentioning here is called prolapse intervertebral disc with neuronal compromise. I will make you understand this disease. Our vertebral column is a bony structure which is made up of many bones called vertebrae. Vertebral column is hollow towards posterior side to accommodate spinal cord. In between two vertebrae there is a cartilaginous disc which is a main part of vertebral joint. Sometimes due to wear and tear or injury to vertebra, an intervertebral disc gets prolapsed and bulges posteriorly. If this prolapse is severe then this disc may impinge upon the spinal cord and emerging spinal nerves roots. This condition is dangerous as it may cause paralysis of lower portion of body. In your fathers' case it is more complicated due to multiple levels of involvement at both cervical (neck) and lumbar region. Sooner or later surgery may be required. I suggest you to follow the advice of his treating neurosurgeon who may advise correctly the right time of surgery according to functional capacity of your father. I wish your father a better health.