Take aspirin or an anti-inflammatory medication, such as ibuprofen, if needed.
Rest – or non-impact activities, such as swimming.
Avoid jumping sports like basketball or volleyball.
Avoid kneeling, climbing too many stairs, or sitting too long.
At your doctor’s advice, do low-impact exercises to strengthen the knee muscles – especially the quadriceps and gluteal muscles. S/he may refer you to a physical therapist for exercises and biomechanical assessment.