Hi Dear, Welcome to HCM. Understanding your concern. As per your query you have left inner knee pain around vastus medialis area. Well there can be many reasons for symptoms you mention in query like lower vastus medialis trigger point or upper vastus medialis trigger point , which usually occur due to reasons like stumbling or unexpectedly stepping into a hole or exercise includes squats or deep knee bends .There can be other reasons also like knee injury and nerve compression .I would suggest you to start physical therapy and massage therapy , which are very effective in this case , also take ibuprofen or acetaminophen for pain . . If condition doesn t get well then consult orthopedic surgeon for proper examination . Doctor will take history , examine physically and may order CT scan or MRI to confirm the diagnosis and treatment . Hope your concern has been resolved. Get Well Soon. Best Wishes, Dr. Harry Maheshwari