What is the biceps aponeurosis?

Anatomical terminology. The bicipital aponeurosis (also known as lacertus fibrosus) is a broad aponeurosis of the biceps brachii, which is located in the cubital fossa of the elbow. It separates superficial from deep structures in much of the fossa.

What passes through bicipital aponeurosis?

ELBOW AND FOREARM The median nerve, along with the brachial artery, runs beneath the bicipital aponeurosis at the level of the elbow. After giving some branches to the pronator teres, the median nerve then goes deep to this muscle.

What is the function of Lacertus Fibrosus?

It limits the flexion and abduction of the elbow and supination of the forearm. Lacertus fibrosus maintains the rhythmicity between the elbow flexion and supination of the forearm.

Why does my bicipital aponeurosis hurt?

The biceps tendon can become inflamed or injured when it is overused or too much pressure is suddenly put on the tendon. Injuries often happen when someone is carrying a lot of weight with the arm stretched out straight, or when the weight pushes the arm straight.

How do you palpate bicipital aponeurosis?

Guide the patient to bend the elbow and supinate. Support the forearm, so that the muscles relax. With the patient铆s upper limb relaxed, place the fingers distal and medial to the distal tendon of the biceps brachii. Release support while asking the patient to hold this position.

Where does the bicipital aponeurosis insertion?

The bicipital aponeurosis (also known as lacertus fibrosus) is a broad aponeurosis of the biceps brachii which is located in the cubital fossa of the elbow and separates superficial from deep structures in much of the fossa. The bicipital aponeurosis originates from the distal insertion of the biceps brachii.

Why is the bicipital groove important?

The bicipital groove (intertubercular groove, sulcus intertubercularis) is a deep groove on the humerus that separates the greater tubercle from the lesser tubercle. It allows for the long tendon of the biceps brachii muscle to pass.

What is a tendon vs aponeurosis?

Aponeurosis vs Tendon. Similar to tendons, Aponeurosis is a flattened fibrous membrane binding the muscles together or connecting them to other parts of the body such as bone or skin. Tendons are the tough band of inelastic fibrous tissues connecting a muscle with their bony attachment.

What is the difference between tendon and aponeurosis?

Aponeurosis is an extremely delicate, thin sheath-like structure, which attaches muscles to the bones whereas tendons are tough, rounded cord-like structures which are extensions of the muscle. Normally, tendons allow the attachment of the muscle from its originating bone to the bone on which it ends.

What does the bicipital aponeurosis protect?

The bicipital aponeurosis is presumed to protect the neurovascular bundle in the cubital fossa such as median nerve and the brachial artery, which pass deep to it [1]. Click to see full answer. Correspondingly, where is the Bicipital Aponeurosis located?

What is the origin of the bicipital aponeurosis?

The bicipital aponeurosis originates from the distal insertion of the biceps brachii, and inserts into the deep fascia of the forearm. The biceps tendon inserts on the radial tuberosity, and the bicipital aponeurosis lies medially to it.

What is the function of the aponeurosis?

Bicipital aponeurosis. While the tendon of the biceps inserts on the radial tuberosity, the aponeurosis reinforces the cubital fossa, and helps to protect the brachial artery and the median nerve running underneath. This protection is important during venipuncture (taking blood) from the median cubital vein .

Can the bicipital aponeurosis be removed?

The bicipital aponeurosis (arrow) is identified medial to the biceps brachii tendon. It is elevated and incised (Fig. 87.5A and B ). Preservation of the aponeurosis offers no functional advantage. It can be removed without consequence. Ensure the antebrachial cutaneous nerve is protected before cutting any structures.