The Journal of hand surgery, European volume
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The pathogenesis of trigger finger has generally been ascribed to primary changes in the pulley. Histological examination of the affected tendons has rarely been done. ⋯ Trigger finger tendons had a high score (14.2; SD, 2.2) consistent with tendinosis, while the controls were almost normal (2.5; SD, 1.9). This suggests that the tendon is also affected, and that trigger finger is a form of tendinosis.
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To determine the contribution of the T1 root to movements of the upper limb in infancy, 40 infants presenting with obstetrical brachial plexus palsy who underwent resection and reconstruction of all brachial plexus roots with the exception of the T1 root were assessed in the early postoperative period. The movements of the limb were recorded using the Hospital for Sick Children active movement scale and demonstrated considerable variability. ⋯ By contrast, this study isolated the physiological activity of T1 and analysed the functional contribution of this root to arm movement. We show a greater than generally recognized contribution of T1 to the function of the upper limb in infants.