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Anatomy & Biomechanics of Extremities Flashcards

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

Read the first 7 Anatomy & Biomechanics of Extremities flashcards as text

  1. Which ligament is the primary restraint to anterior translation of the tibia on the femur?

    Answer: Anterior cruciate ligament

    The ACL is the primary restraint to anterior tibial translation, providing approximately 85% of the total restraining force.

  2. The 'carrying angle' of the elbow is formed between the long axis of the humerus and which bone?

    Answer: Ulna

    The carrying angle is measured between the long axis of the humerus and the long axis of the ulna, averaging 5–10° in males and 10–15° in females.

  3. During the stance phase of gait, the subtalar joint undergoes which motion to allow the foot to accommodate uneven terrain?

    Answer: Pronation followed by supination

    At initial contact the subtalar joint pronates to absorb shock, then supinates during mid-to-late stance to create a rigid lever for push-off.

  4. The coracohumeral ligament primarily limits which motion of the glenohumeral joint?

    Answer: External rotation and inferior translation

    The coracohumeral ligament spans from the coracoid process to the greater and lesser tubercles and is a key restraint to external rotation and inferior translation of the humerus.

  5. Which tarsal bone articulates with all five metatarsal bases?

    Answer: Cuboid

    The cuboid articulates with the 4th and 5th metatarsal bases directly; combined with the three cuneiforms the tarsometatarsal (Lisfranc) joint spans all five metatarsals, but the cuboid is the only tarsal that contacts the lateral two.

  6. During shoulder abduction in the scapular plane, the ratio of glenohumeral to scapulothoracic motion is approximately:

    Answer: 2:1

    The classic scapulohumeral rhythm is 2:1, meaning for every 3° of arm elevation, 2° occurs at the glenohumeral joint and 1° at the scapulothoracic articulation.

  7. The lateral collateral ligament complex of the knee provides primary restraint to which stress?

    Answer: Varus stress

    The fibular (lateral) collateral ligament and posterolateral structures are the primary restraints to varus stress at the knee.