Most injuries of the thumb are ligamentous injuries, usually involving an avulsion of the ulnar collateral ligament from the base of the proximal phalanx.
Nonsurgical treatment by immobilizing the thumb in a spica-type cast for 4 weeks can be considered in partial tears of the ulnar collateral ligament.
4) It is a result of the torn end of the ulnar collateral ligament being displaced and coming to lie superficial to the adductor pollicis aponeurosis.
4,11,12) MR findings can be used after rupture of the ulnar collateral ligament to distinguish between a Stener lesion and a nondisplaced or minimally retracted tear.
Ulnar collateral ligament of the thumb: MR findings in cadavers, volunteers, and patients with ligamentous injury (gamekeeper's thumb), AJR Am J Roentgenol.
Hand function after injuries to the collateral ligaments of the metacarpophalangeal joint of the thumb.
Injuries of the ulnar collateral ligament of the metacarpophalangeal joint of the thumb are encountered frequently.
Campbell coined the eponym, gamekeeper's thumb, in 1955, to describe chronic laxity of the ulnar collateral ligament.
Stener later described a lesion observed in many cases of complete rupture of the ulnar collateral ligament of the thumb metacarpophalangeal joint.
2,8) When a skier falls with his or her hand caught in a ski pole, the ulnar collateral ligament of the metacarpophalangeal joint of the thumb may sustain significant stresses.
Magnetic resonance (MR) imaging is an important imaging modality that is often used to diagnose damage to the ulnar collateral ligament (UCL) of the elbow.
On the MR images of the dominant pitching arm, four of the fourteen subjects had increased thickness of the ulnar collateral ligament.
Mirowitz SA, London SL: Ulnar collateral ligament injury in baseball pitchers: MR imaging evaluation.
Timmerman LA, Schwartz ML, Andrews JR: Preoperative evaluation of the ulnar collateral ligament by magnetic resonance imaging and computed tomography arthrography.
SugimotoH, Ohsawa T: Ulnar collateral ligament in the growing elbow: MR imaging of normal development and throwing injuries.