Hello dear, The symptoms as mentioned in your post can be attributed to accumulation of fluid in the knee joint, secondary to the musculo-skeletal injury . X ray of the knee joint will be helpful to rule out any fracture or other pathological causes. Symptomatic relief can be obtained by heat therapy, application of analgesic & muscle relaxant gel, intake of analgesics like Diclofenac+ Serratiopeptidase (to be taken after food) and Pantoprazole (to be taken 30 minutes before meals). Supplements of Calcium & Vitamin D can be included in diet which will help in strengthening of bones. Physiotherapy exercise will also be helpful. If symptoms still persist, kindly consult an Orthopedician for proper clinical examination. Also she should maintain adequate hydration & nutrition status, take proper rest and avoid stress. Wishing her a Good Health. Take care.