Peter Attia· MD
I will hyperextend the knee and I'll compare to both sides this is um if there's any process inside the hip joint that will be uncomfortable if there's fluid in there if there's a meniscus tear if you had a acute ligament injury when I hyperextend on either side even I can feel someone tensing up so there's there a good sort of a first test and it's pretty gentle to see if there's any process deep inside the knee