Lesser trochanter

The lesser trochanter is a prominent anatomical structure located on the proximal (upper) end of the femur, which is the primary bone of the thigh. While it is smaller than the greater trochanter, the lesser trochanter plays a crucial role in the attachment of several important muscles of the lower limb.

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Gray's anatomy lesser trochanter

Anatomy

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Gray's anatomy

Located on the posterior aspect of the femur, just below the neck, the lesser trochanter is an angular prominence. It is most palpable and visible on the medial side of the upper femur.

Relationship to Other Structures

The lesser trochanter is situated inferiorly to the femoral neck and is anteromedial to the greater trochanter. The two trochanters are connected by the intertrochanteric crest on the posterior side and the intertrochanteric line on the anterior side.

Function

The primary function of the lesser trochanter is to provide an attachment point for muscles. The most notable muscle attaching to the lesser trochanter is the iliopsoas muscle, which is essential for hip flexion and plays a role in maintaining proper posture.

Clinical Significance

Fractures or injuries involving the lesser trochanter, though less common than those of the greater trochanter, can be a source of significant pain and mobility limitations. Such injuries often arise from direct trauma or as a result of pathological conditions that weaken the bone, such as osteoporosis.

See Also

• Greater trochanter
• Femur
• Iliopsoas muscle
• Intertrochanteric crest
• Intertrochanteric line

Gray's Anatomy

• Gray's Anatomy Contents
• Gray's Anatomy Subject Index
• About Classic Gray's Anatomy
• Glossary of anatomy terms

Anatomy atlases (external)

[1] - Anatomy Atlases