Jerk test

Question 1

purpose

Answer 1

determine if there is laxity biasing posterior joint

Question 2

pt and therapist position

Answer 2

pt: seated, shoulder flexed to 90 degrees, internally rotated
therapist: standing behind pt

Question 3

procedure

Answer 3

axially load humerus and horizontally adduct arm

Question 4

positive test

Answer 4

sudden jerk or clunk as humeral head subluxes posteriorly