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Anatomy & Biomechanics Flashcards

6 cards from real COC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Anatomy & Biomechanics flashcards as text

  1. Which muscle group is primarily responsible for controlling dorsiflexion during the swing phase of gait?

    Answer: Tibialis anterior

    The tibialis anterior contracts eccentrically during loading response and concentrically during swing to clear the foot.

  2. The center of mass in a typical adult is located approximately at which anatomical landmark?

    Answer: Second sacral vertebra

    The center of mass is typically located just anterior to the second sacral vertebra in the standing position.

  3. During normal gait, how many degrees of ankle plantarflexion occur at initial contact in a healthy adult?

    Answer: 0–5°

    At initial contact the ankle is near neutral with only 0–5° of plantarflexion in normal gait.

  4. Which nerve innervates the intrinsic muscles of the foot responsible for toe flexion?

    Answer: Medial plantar nerve

    The medial plantar nerve (a branch of the tibial nerve) innervates most intrinsic foot muscles including the flexor digitorum brevis.

  5. The Q-angle is measured between which two anatomical reference lines?

    Answer: Line from ASIS to patella and line from patella to tibial tubercle

    The Q-angle is formed by the line from the ASIS to the patella center and the line from the patella center to the tibial tubercle.

  6. Which gait deviation is most commonly associated with hip abductor weakness on the stance-side limb?

    Answer: Trendelenburg gait

    Trendelenburg gait causes the pelvis to drop contralaterally during single-limb stance due to weak ipsilateral hip abductors.

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