knee injection inflamation redness

accident anaesthetic anaesthtist anatomy body care cartilage concept damage danger decrease diagnosis disease doctor emergency extreme harm healing health healthcare heavy help hospital human hurt hyperextension illustration inflamation inflammation inject injection injured injury inner instrument joint knee leg ligament ligaments medical medicals medication medicine operating operation orthopaedic orthopedic pain painful patient physical physician problem procedure professional redness risk science surgery surgical swelling symptom tendon therapy trauma traumatic traumatology treat treatment vector walk weight