A trochanter is a tubercle of the femur near its joint with the hip bone. In humans and most mammals, the trochanters serve as important muscle attachment sites. Humans are known to have three trochanters, though the anatomic "normal" includes only the greater and lesser trochanters. (The third trochanter is not present in all specimens.)

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Trochanter
Upper part of right femur viewed from behind and above, showing greater and lesser trochanter
Details
Identifiers
Latin	trochanter
FMA	82513
Anatomical terminology [edit on Wikidata]

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"Trokhos" (Greek) = "wheel", with reference to the spherical femoral head which was first named "trokhanter". Later usage came to include the femoral neck.^[1]

In human anatomy, the trochanter is a part of the femur. It can refer to:

• Greater trochanter
• Lesser trochanter
• Third trochanter, which is occasionally present

• Fourth trochanter, of archosaur leg bones
• Trochanter (arthropod leg), a segment of the arthropod leg

• Intertrochanteric crest
• Intertrochanteric line