Zasadniczo ten staw to hock joint, ale znalazłam taki cytat:
"The term also means that when viewed from the side, the legs should be perpendicular with the ground, not with the rear pasterns (hocks) too angulated and tucked under (jarrets trop fermés) or having too open an angle and stretched out (jarrets trop ouverts)."
Drugi link to Glossary of Dog Terms - może się przyda.