What is Lacertus Fibrosus?
The lacertus fibrosus or distal bicipital aponeurosis is an aponeurotic structure originating and enveloping the distal biceps tendon as well as the proximal flexor muscle group of the forearm.
How is Lacertus syndrome diagnosed?
If someone is still having symptoms after carpal tunnel release, the hand should be examined for lacertus syndrome. A decrease of power of FPL, FDP2, and FCR as well as tenderness at the medial edge of the lacertus fibrosus over the median nerve will make the diagnosis.
What is the clinical importance of bicipital aponeurosis?
Bicipital aponeurosis performs the function of drawing the posterior border of the ulna medially during supination of the forearm [1]. 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].
What lies superficial to bicipital aponeurosis?
The bicipital aponeurosis is superficial to the brachial artery and the median nerve, but deep to the median cubital vein. This protection is important during venipuncture (taking blood).
What causes Lacertus syndrome?
Causes. Lacertus syndrome affects both men and women, usually after 35 years of age. Manual work, overwork and repetition of movements with the forearm in pronation are recognized as risk factors. It is estimated that a large number of people with carpal tunnel syndrome also suffer from lacertus syndrome.
Why does my arm fall asleep when I bend my elbow?
Ulnar nerve compression is a nerve disorder that can cause numbness, pain, or tingling in the arm, hand, or fingers. When you bend your elbow, the ulnar nerve—which travels from the shoulder to the hand—wraps around a bony ridge on the inside of the elbow called the medial epicondyle.
What body part is Antecubital?
The Cubital Fossa is a triangular-shaped depression, located between the forearm and the arm on the anterior surface of the elbow, with the apex of the triangle pointing distally. It is also known as the “antecubital” because it lies anteriorly to the elbow.
Where is aponeurosis found in the body?
Aponeuroses are important for human movement and posture and are found all over your body, from the tip of your head to the soles of your feet. What, exactly, is an aponeurosis? An aponeurosis is a type of connective tissue that provides a point for a muscle to attach to a bone or cartilage.
What is the difference between cubital and antecubital?
As adjectives the difference between antecubital and cubital is that antecubital is (anatomy) pertaining to, or situated in the anterior part of the elbow (cubitus) while cubital is (anatomy) of or pertaining to the cubit or ulna.
How common is Lacertus syndrome?
Lacertus syndrome is a common hand disorder, but it is still widely unknown to the public and many physicians. It manifests with symptoms very similar to carpal tunnel syndrome, so its diagnosis is often overlooked or made late.