Rotary subluxation of the scaphoid: a spectrum of instability.
Rotary subluxation of the scaphoid is not an "all or nothing" phenomenon, but a spectrum of instability including constant displacement of the scaphoid apparent on plain non-stress radiographs (the previously defined static type), subluxation seen only on loading X-rays or other special studies ("dynamic"), and instability demonstrable on physical examination but not by radiographic studies ("predynamic"). A clinical study of 1,000 random individuals was carried out to determine the incidence of unilateral hypermobility of the scaphoid. 21% of the subjects were found to have an abnormal difference in mobility between their scaphoids. The incidence of significant symptoms and physical findings associated with this hypermobility was determined.
Watson
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Connecticut Combined Hand Service, Hartford Hospital, University of Connecticut.
Ottoni
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L
Pitts
E C
EC
Handal
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AG
D000328:Adult; D002348:Carpal Bones / Q000293:injuries*; D005260:Female; D006801:Humans; D015994:Incidence; D004204:Joint Dislocations / Q000000981:diagnostic imaging* / Q000453:epidemiology; D007593:Joint Instability / Q000000981:diagnostic imaging* / Q000453:epidemiology; D008023:Ligaments, Articular / Q000293:injuries*; D008297:Male; D011859:Radiography; D014954:Wrist Injuries / Q000000981:diagnostic imaging* / Q000453:epidemiology; D014955:Wrist Joint / Q000000981:diagnostic imaging*