So, that joint appears to be right here, and anatomically, that puts it right behind this big fat pad right here.
所以，那个关节似乎就在这里，从解剖学上讲，它就在这个大脂肪垫的后面。
英语百科
Fat pad
A fat pad is a mass of closely packed fat cells surrounded by fibrous tissue septa. They may be extensively supplied with capillaries and nerve endings.