Biceps function and Popeye sign (tear of long head) скачать в хорошем качестве

Biceps function and Popeye sign (tear of long head)

The biceps muscle, located in the front of the upper arm, plays a critical role in the movement of both the shoulder and the elbow. It has two main functions: 1. Elbow Flexion: This is the primary function of the biceps. When the biceps contracts, it pulls the forearm towards the shoulder, bending the elbow. This action is used in lifting and carrying objects. 2. Forearm Supination: The biceps also helps in rotating the forearm. This action, known as supination, involves turning the palm upwards. When holding an arm out with the palm facing up, the biceps aids in keeping this position. The "Popeye sign" is a clinical indication often associated with a biceps tendon rupture. This sign is named after the cartoon character Popeye, whose biceps were disproportionately large. In a biceps tendon rupture, the muscle can ball up near the shoulder, creating a bulge that resembles Popeye's muscular arm. This happens because the tendon, which normally keeps the muscle elongated down the arm, is no longer intact, allowing the muscle to retract. The Popeye sign is often accompanied by a sudden, sharp pain in the upper arm and can result in weakness in arm flexion and forearm supination.