Abstract
Dupuytren's contracture is characterized by two underlying lesions, nodules and cords. These involve the palmar fascia at the distal palmar crease, especially at the level of the third and fourth rays with progressive disabling finger contracture. The superficial palmar aponeurosis appears as a thin echogenic lamellar structure overlying the flexor tendons. The demonstration of hypoechoic bands adhering to the marging of the flexor tendons and deep surface of the dermis appears to be pathognomonic of the disease. Compared to tendons, early nodules are hypoechoic and typically hypervascular whereas older nodules are iso- to hyperechoic, without hypervascular Doppler signal. Ultrasound can sometimes demonstrate arterial encasement by fibrous or scarring tissue. Ultrasound therefore is very useful for the differential diagnosis of pathologies involving the palmar surface of the hand, for the early detection of Dupuytren's contracture, and for the detection of complication, especially vascular. These data may have an impact on management.
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