Congenital dislocation of the patella in Rubinstein Taybi syndrome.

Two patients with Rubinstein Taybi Syndrome (RTS) were found to have congenital dislocation of the patella (CDP). The dislocation was bilateral in one patient. Both underwent surgical reduction and stabilisation. The dislocation recurred in one patient who had associated genu valgum and external tibial torsion at the time of stabilisation. We feel that early diagnosis of CDP in patients with RTS is important to help early mobilisation and avoid secondary degenerative knee changes occurring.