Abstract
Surgical procedures concerning the distal articular surfaces of the radius and ulna, demand an accurate method of measurement of ulnar variance. A new method, which is a modification of the method described by Palmer (1982), is introduced.
100 randomly selected healthy persons were submitted to X-ray of the wrist and the ulnar variance was determined independently by three observers using both methods.
By “weighted kappa” statistics the results, expressed in intra- and interobserver agreement, showed a significantly higher reliability in favour of the Modified method.
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