(English captions by Andrea Matsumoto from the University of Michigan)
Ulnar collateral ligament stability can be tested at 0 and 30 degrees by applying a valgus
force to the elbow.
Radial collateral ligament stability can also be tested at 0 and 30 degrees of flexion by
applying a varus force to the elbow.
Laxity indicates partial or complete ligamentous tear.