Fig. 1From: Anatomical characteristics and potential gene mutation sites of a familial recurrent patellar dislocationThe anatomical data measurement of the patient's knee joint. A Insall-Salvati index. B Caton-Deschamps index. C Tibial tubercle–trochlear groove. D Patellar Tilt. E Trochlear sulcus angle. F Trochlear sulcus depth. G Trochlear angleBack to article page