[Congenital genu recurvatum. Presentation of 2 cases].

Two cases of genu recurvatum congenitum are reported having been brought to the authors' attention within a short space of one another. In both cases this malformation, which is not very common, was associated with other anomalies. The malformation is characterised by an exaggerated hyperextension of the knee, sometimes to such an extent that the angle of the foreward bend is less than 100 degrees, whereas flexion is almost impossible on account of the strong retraction of the femoral quadriceps. The first of the two cases was resolved relatively easily following treatment with a plaster cast and subsequent physiotherapy. The second case requires longer and more complex treatment, also involving surgery, given the complete loss of joint contacts and the presence of club feet.