Lateral instability at the metacarpophalangeal joint of the thumb.
D005260:Female; D005383:Finger Injuries / Q000601:surgery*; D005385:Fingers / Q000502:physiology; D006801:Humans; D008023:Ligaments, Articular / Q000601:surgery; D008297:Male; D008663:Metacarpus / Q000601:surgery*; D008722:Methods; D009132:Muscles; D013709:Tendon Transfer; D014457:Ulna / Q000601:surgery