Ключевые слова: accident, aging, athlete, bones, brace, break, bruising, dislocate, dislocation, doctor, excruciating, extension, fluid, health, hurt, injury, knee, kneecap, knobby, knockkneed, lateral, leg, ligament, medical, medicine, movement, pain, painful, patella, physical, pills, player, procedure, recovery, recuperate, replacement, skin, sports, stability, support, surgery, swelling, swollen, symptoms, tear, tendons, therapy, tissue, torn, treatment,