Obturator externus groove

The obturator externus groove is a notable anatomical feature located on the femur, specifically on the posterior aspect of the greater trochanter. This groove serves as a passageway for the obturator externus muscle tendon, which plays a crucial role in the lateral rotation of the thigh.

Anatomy

The obturator externus groove is situated near the base of the greater trochanter of the femur. It is formed by the tendon of the obturator externus muscle, which originates from the external surface of the obturator membrane and the surrounding bone of the obturator foramen.

Function

The primary function of the obturator externus groove is to facilitate the smooth passage of the obturator externus muscle tendon. This muscle is involved in the lateral rotation and stabilization of the hip joint, contributing to the overall mobility and function of the lower limb.

Clinical Significance

Injuries or conditions affecting the obturator externus groove or the structures passing through it, such as the obturator externus muscle, can lead to impaired movement or pain in the hip region. Understanding the anatomy of this groove is essential for diagnosing and treating such conditions.

See Also

• Obturator externus muscle
• Femur
• Greater trochanter
• Hip joint

References

• Gray's Anatomy
• Clinical Anatomy by Regions

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