The aim of this paper was to describe the different kinds of genu recurvata, their surgical treatment, and our own experience. There are 3 kinds of genu recurvatum: congenital, constitutional, and acquired. When acquired, deformation may be purely osseous, purely ligamentous, or combined. Such genu recurvatum can be responsible for pain, weakness of the knee, femorotibial instability, cosmetic deformity, and swelling. Different techniques have been described for correction of tibial slope in genu recurvatum. Our technique is an anterior opening wedge high tibial osteotomy associated with a proximal transfer of the tibial tuberosity to prevent patella infera. The technique will be described, and we will report results about 16 flexion high tibial osteotomies performed between 1997 and 2006.