Musculoskeletal anatomy · USMLE Step 1

A patient has difficulty rising from a seated position due to weakness in hip extension. Which muscle is most likely affected?

  1. Gluteus maximus
  2. Gluteus medius
  3. Quadratus lumborum
  4. Sartorius
Show answer and explanation

Correct answer: Gluteus maximus

Gluteus maximus is the primary hip extensor used in powerful movements like rising from a chair. Its weakness significantly affects hip extension.

Difficulty: Medium Question 17 of 20

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