Thanks for your query.
I have gone through your query and understand your concern. You have not provided with detailed history about pain how it started. If it occurred after injury then it is most likely a sprain with partial ligament injury and its treatment is quadriceps exercises, rest to joint by splint and analgesic such as ibuprofen for pain relief.
If it occurred spontaneously then it is likely to be synovitis. It may require biopsy and histopathological examination for diagnosis.
MRI of knee is investigation of choice to distinguish between two and other conditions. Hope your query get answered. Wishing you a good health. Take care.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.