injuries poisoning
Ulnar Collateral Ligament Sprains
Diagnosis of Ulnar Collateral Ligament Sprains
Stress testing X-rays Stress testing is done to check for radial deviation of the thumb; before testing, some patients require anesthesia (infiltration of a local anesthetic). The examiner stabilizes the radial side of the metacarpophalangeal joint of the thumb and pulls on the distal thumb in a radial direction. Both thumbs are tested, and the degree of laxity is compared. Anteroposterior and lateral x-rays are taken to check for an avulsion fracture of the proximal phalanx. Sometimes stress x-rays are taken. X-rays are usually normal, because there is no underlying fracture. 