Levator claviculae muscle

Levator Claviculae Muscle

The Levator Claviculae Muscle is a rare anatomical variant in the human body. It is an accessory muscle that is not present in all individuals. When present, it is located in the neck and shoulder region, extending from the clavicle to the transverse processes of the cervical vertebrae.

File:Levator claviculae muscle.jpg

Illustration of the Levator Claviculae Muscle

Anatomy

The Levator Claviculae Muscle, when present, originates from the transverse processes of the cervical vertebrae, typically the first to fourth vertebrae. It then descends laterally to insert into the superior surface of the clavicle. The muscle is innervated by the cervical plexus and acts to elevate the clavicle.

Clinical Significance

The presence of the Levator Claviculae Muscle can have clinical implications. It may be mistaken for a mass or tumor on imaging studies, leading to unnecessary diagnostic procedures or treatments. Additionally, it can potentially cause compression of the brachial plexus or subclavian vessels, leading to symptoms such as pain, numbness, or weakness in the arm.

History

The Levator Claviculae Muscle was first described in the medical literature in the 19th century. However, it is not commonly included in anatomical textbooks due to its rarity.

See Also

• Accessory Muscles
• Cervical Vertebrae
• Clavicle