Knee pain often comes from injury or arthritis. Common causes include torn cartilage or ligaments (sprains), bursitis or osteoarthritis (wear-and-tear of cartilage). Overweight, age or past injury increase knee stress.

Knee replacement is advised when severe arthritis or injury causes daily pain and stops normal activities. Doctors suggest it after medicines, physiotherapy or injections fail to relieve symptoms of bad knee arthritis.

Stay active and eat well. Gentle exercise (walking, yoga or stretching) builds muscles that support joints. A healthy “anti-inflammatory” diet (fruits, vegetables, spices like turmeric) can ease pain. Use warm or cold packs on aching joints as needed.

Most back strains improve in a few days with rest. But if pain is very bad, doesn’t get better in a week, or comes with numbness/weakness or bowel/bladder problems, see a doctor immediately. Severe trauma (like a fall) with these symptoms needs emergency care.