https://orcid.org/0000-0002-7629-7213
Figures & data
Figure 1 Findings of (A) negative “pronation compensation sign” as the second metacarpophalangeal joint remains in contact with the table while the thumb goes into palmar abduction. (B) positive “pronation compensation sign” as the forearm pronates to compensate for abductor pollicis brevis muscle weakness causing the second metacarpophalangeal joint to lift off the table (indicated by the arrow).
Table 1 Classification of the Included Hands Based on the Presence of the “Pronation Compensation Sign”