Fig 1.
A 23-year-old man with a flexor digitorum profundus tendon rupture of the ring finger.
(a) Ultrasound image of longitudinal scan shows discontinuity of the tendon with retraction of the ruptured tendon (arrows) at the middle phalangeal level. Decreased echogenicity of the ruptured tendon site is also seen (arrowheads). (b) On surgery, the rupture of the flexor digitorum profundus tendon was confirmed and picked up with forceps.
Fig 2.
A 49-year-old woman with a flexor digitorum profundus tendon rupture of the ring finger.
Ultrasound image of longitudinal scan shows discontinuity of the tendon with retraction of the ruptured tendon (arrows) at the middle phalangeal level. Anechoic lesions are seen around the ruptured tendon stumps and within the tendon sheath (arrowheads).
Fig 3.
A 63-year-old woman with a rupture of the extensor pollicis longus tendon.
(a) Ultrasound image of transverse scan shows pseudomass formation (arrows) that reveals an ovoid-shaped, heterogeneously hypoechoic lesion with a peripheral anechoic portion indicating fluid collection (arrowheads). (b) On ultrasound image of longitudinal scan, the extensor pollicis longus tendon shows decreased echogenicity at the ruptured tendon site (arrowheads). The ruptured tendon stump is seen as pseudomass formation (arrows) with surrounding anechoic portion indicating fluid collection (thin long arrows). (c) On surgery, the rupture of the extensor pollicis longus tendon was confirmed (arrows). Pseudomass formation was occupied with granulation tissue and hemorrhage intraoperatively.
Table 1.
Frequency of sonographic findings in tendon ruptures.
Table 2.
Correlation between motion of the tendon on the dynamic study and surgical diagnosis.
Table 3.
Frequency of sonographic findings in extensor pollicis longus tendon ruptures and the other ruptured tendons.