Hello.
Uncle is suffering from degenerative disc disease. Depending upon his age, symptoms and signs various treatment can be tailored accordingly.
As per head title, pain is going down to leg means he is symptomatic.
A quick assesment will help in determining the treatment protocol.
As per the mri, in his age group it is common to have similiar changes in MRI in most of the patient. Treatment id directed according to patient signs and symptoms.
Next Steps
Consult a Spine Specialist.
Health Tips
Keep Vigilance in regards to increase in leg pain, weakness in toes, ankle, knee, any recent changes noticed while passing urine.