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Fig. 5 | Journal of Orthopaedic Surgery and Research

Fig. 5

From: A new quantitative evaluation system for distal radioulnar joint instability using a three-dimensional electromagnetic sensor

Fig. 5

The ultrasonography of the distal radioulnar joint. a Before the compression of the ulnar head. b After the compression of the ulnar head. X1: distance between the dorsal surfaces of the ulnar head and the radius before compression. X2: distance between the dorsal surfaces of the ulnar head and the radius after compression. X1-X2: the volar translation distance of the ulnar head

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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X