Lacertus fibrosus runs over which aspect of the front leg?

Lacertus fibrosus runs over which aspect of the front leg?

• A. Cranial
• B. Caudal
• C. Medial
• D. Lateral

Answer: (A)

The lacertus fibrosus runs over the cranial (front) surface of the forelimb. It is a fibrous band that originates from the biceps brachii tendon and travels across the front of the forearm toward the extensor fascia over the radius and carpus. This orientation places it on the forward-facing aspect, not the back (caudal) surface, nor the inner (medial) or outer (lateral) sides of the limb. In a standing animal, the cranial surface is the one toward which the limb bends and moves forward, which is exactly where the lacertus fibrosus lies as it crosses the forelimb.

The lacertus fibrosus runs over the cranial (front) surface of the forelimb. It is a fibrous band that originates from the biceps brachii tendon and travels across the front of the forearm toward the extensor fascia over the radius and carpus. This orientation places it on the forward-facing aspect, not the back (caudal) surface, nor the inner (medial) or outer (lateral) sides of the limb. In a standing animal, the cranial surface is the one toward which the limb bends and moves forward, which is exactly where the lacertus fibrosus lies as it crosses the forelimb.