Dear patient
It seems your father is suffering from osteoarthritis
It is a degenerative condition which leads to pain in knees affected
Next Steps
surgery is the last option if the medical treatment doesn't led to symptomatic relief of pain ..
do take cartilage protective like (type 2 collagen,alfapin etc )
THE GRADE OF OSTEOARTHRITIS (SEEN ON X RAY AND MRI) AND SYMPTOMS DECIDE WHETHER SURGERY IS MUST OR NOT
Health Tips
x ray b/l knees ap standing and lateral to know the grade of OA right now
keep the BMI in normal range
check vit d3
serum ca
go for a dexa scan