knee joint pain in caucasian man. concept of osteoarthritis, rheumatoid arthritis or ligament injury

knee joint pain painful osteoarthritis oa arthritis arthralgia rheumatic rheumatoid hurt red inflammation unilateral hand hands hold holding tendon tendinitis tendonitis injury trauma ligament bursitis ache aching man male outdoor jungle jogging running walking sport sportsman care caucasian swelling problems problem disease symptom symptoms sign health