On gait analysis, you notice your patient forcibly shifts her weight laterally to allow her leg to pass forward in swing phase. She has a history of poliomyelitis. She also has a positive Trendelenberg sign. Which of her muscles would you expect to be significantly weak?
A. Adductor magnus
B. Gluteus maximus
C. Gluteus medius
D. Rectus femoris
E. Vastus lateralis
Answer: C
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Biomechanics
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