Shortening on one side indicates an upward displacement of the trochanter, lengthening a downward displacement.
The trochanter is simple in some genera and divided in others.
The obturator ridge is a short, blunt, longitudinal ridge forming the posterior edge of the trochanter.
There is a slight ridge on the femur in the place of a third trochanter.
The femur has no third trochanter, so prevalent in the Perissodactyles.
The femur has a third trochanter (except in Chalicotherium).
Abduction is markedly restricted and the trochanter is elevated and prominent.
The femur has a slight ridge representing the third trochanter.
The first of these is called the 'coxa', and is succeeded by a short joint called the 'trochanter'.
The femur has no third trochanter, and the tibia and fibula are distinct.
trochanter tro·chan·ter (trō-kān'tər)
Any of several bony processes on the upper part of the femur.