Lesser trochanter
The lesser trochanter of the femur
The femur , or thigh bone, is the most proximal bone of the leg in tetrapod vertebrates capable of walking or jumping, such as most land mammals, birds, many reptiles such as lizards, and amphibians such as frogs. In vertebrates with four legs such as dogs and horses, the femur is found only in...

 is a conical eminence, which varies in size in different subjects


It projects from the lower and back part of the base of the femur neck
Femur neck
The femur neck or neck of the femur is a flattened pyramidal process of bone, connecting the femoral head with the femoral shaft, and forming with the latter a wide angle opening medialward.- Angle of inclination :...


From its apex three well-marked borders extend:
  • two of these are above
    • a medial continuous with the lower border of the femur neck
    • a lateral with the intertrochanteric crest
      Intertrochanteric crest
      The intertrochanteric crest is a bony ridge located on the posterior side of the head of the femur, stretching obliquely downward and medially from the summit of the greater trochanter to the lesser trochanter....

  • the inferior border is continuous with the middle division of the linea aspera
    Linea aspera
    The linea aspera is a ridge of roughened surface on the posterior aspect of the femur, to which are attached muscles and intermuscular septum.Its margins diverge above and below....

The summit of the trochanter is rough, and gives insertion to the tendon of the Psoas major and the Iliacus.

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