[Simultaneous functional testing of the metacarpophalangeal joints of the thumb in hyperpronation using a simple device].
For the diagnosis of rupture of the ulnar ligaments of MP joint of the thumb functional X-rays are required. The best position for this investigation seems to be - contrary to the routine - overpronation where the metacarpal and the proximal phalanx are both lying nearly straight on the board. If the patient pushes the pulp of his thumb against a barrier he produces stress in abdduction. Both hands can be tightly bandaged together in this uncomfortable position for a certain time. This permits a symmetrical and simultaneous image of both stressed thumbs on only one X-ray film. For this purpose we use a simple wooden board with two small borders which is placed over the film case.
D005383:Finger Injuries; D005384:Finger Joint / Q000000981:diagnostic imaging*; D006801:Humans; D008023:Ligaments, Articular / Q000293:injuries*; D008662:Metacarpophalangeal Joint / Q000000981:diagnostic imaging*; D011187:Posture; D011859:Radiography; D012421:Rupture; D013679:Technology, Radiologic / Q000295:instrumentation*; D013933:Thumb / Q000000981:diagnostic imaging*
Funktionelle simultane Prüfung der MP-Gelenke des Daumens in Hyperpronation mit Hilfe eines einfachen Geräts.