A provocation test used during a lameness examination. The horse's distal limb is artificially hyperextended by placing the hoof on the end of a board and lifting the other end. This will put pressure on the palmar region of the foot by increasing the tension in the deep flexor tendon, this in turn, will accentuate pain in this region of the foot and will cause the horse to hop off the board. The test is more difficult to interpret than a flexion test and must be evaluated carefully; frequently a left-right comparison is useful.