human knee anatomy 3d

limb hand organ leg azure muscle chest aqua purple line human knee anatomy complex joint thigh bone femur shinbone responsible facilitating movement providing stability bearing weight rendering anatomy ankle arthritis athlete biology biomedical body bone broken care cartilage cramp disease exercise fitness fracture graphic health health healthy hospital human illness inflammation injury joint knee leg ligament medical medicine muscle organ orthopedic pain patient physical radiology runner scan science skeletal skeleton structure surgery therapy walk