Σάββατο 27 Μαΐου 2017

What triggers in trigger finger? The flexor tendons at the Flexor Digitorum Sublimis bifurcation

To define the role of the flexor tendons in trigger finger, a high resolution ultrasound examination was undertaken in 20 trigger fingers and 20 normal contralateral digits in 3 digital postures: full extension, mid flexion and near-full flexion. Precise measurements of diameter and cross sectional area of the combined tendon mass were recorded at 5 clearly defined locations: summit of metacarpal head, proximal lip of proximal phalanx (PP), at 1/8, 1⁄4 and 1/2 length of PP. In the normal tendons, there was an anatomical thickening, not previously appreciated at 1⁄4 length PP, in the region of FDS bifurcation.

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