Anatomy study note · Lower limb

Gluteus medius

A fan-shaped abductor of the hip on the outer ilium, essential for keeping the pelvis level during walking.

Key points

• Outer ilium → greater trochanter.
• Superior gluteal nerve.
• Abductor; keeps the pelvis level in walking.
• Palsy → positive Trendelenburg sign (opposite side drops).
• Limb muscles: in situ from limb-bud mesenchyme.
• Upper limb bud C4–T2; lower limb bud L2–S2.
• Skeletal muscle: multinucleated, peripheral nuclei, striated.
• Epimysium → perimysium → endomysium.

The full note in the atlas also covers

Origin · Insertion · Action · Nerve supply · Histology · Development · Clinical notes

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Written from

• Snell’s Clinical Anatomy by Regions, 10th ed., ch. 11, PDF pp. 1281–1283, 1394–1396
• Inderbir Singh’s Human Embryology, ch. 7, PDF p. 109; ch. 10, PDF pp. 142–145
• BRS Cell Biology & Histology, 7th ed., ch. 8, PDF pp. 135–144

More from the lower limb

• Gluteus minimus
• Gracilis
• Great saphenous vein
• Hip joint
• Inguinal lymph nodes
• Interossei of the foot
• Joints of the forefoot and toes
• Knee joint
• Menisci of the knee
• Metatarsal bones
• Patella
• Pectineus

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