The primary function of the omohyoid muscle is to depress and fix the hyoid bone and underlying larynx though it also draws the hyoid bone downwards in phonation and in the terminal phase of swallowing.
What is omohyoid muscle syndrome?
Omohyoid muscle syndrome is a rare condition that presents as a characteristic X-shaped lateral protruding neck mass that occurs on swallowing (Figure 2b). This dynamic bulging neck mass is usually painless and is caused by the omohyoid muscle displacing the overlying SCM.
What causes omohyoid muscle pain?
Injury to the omohyoid muscle is particularly common among bodybuilders and those involved in weight bearing exercise. Pain is often referred to the omohyoid when there is damage to the surrounding structures such as neck whiplash injury following an automotive accident.
Why is it called omohyoid?
Name. The name “omohyoid” derives from the Greek “omos” meaning shoulder, giving one of its attachments, and “hyoid”, giving the other attachment – the hyoid bone.
What artery supplies the omohyoid?
The hyoidal attachments of the sternohyoid and omohyoid muscles are supplied by the hyoid artery, as is the whole thyrohyoid muscle. The hyoid artery arises either directly from the STA or secondarily from its superior laryngeal branch.
How do you fix Omohyoid pain?
Cervical Strain – Specifically Omohyoid Syndrome. Treatment was initiated with: myofascial release; post-isometric contraction-relaxation stretching technique; pre-modulated electrical stimulation technique; and cold packs.
Why does my sternothyroid muscle hurt?
Causes of SCM pain can include chronic health conditions, such as asthma, and acute respiratory infections, such as sinusitis, bronchitis, pneumonia, and the flu. Other causes of SCM pain include: injuries such as whiplash or falls. overhead work such as painting, carpentry, or hanging curtains.
What causes tight levator scapulae muscle?
Sitting for prolonged periods, especially with bad posture, is the most common cause of levator scapulae syndrome. The different muscles in the neck and back, particularly the levator scapulae muscle, are stressed and irritated by sitting for long periods with bad posture.
Why does omohyoid attach on scapula?
The intermediate tendon of omohyoid is ensheathed by deep cervical fascia. This acts as a sling, binding the muscle to the inferiorly located clavicle and first rib, and helping the muscle to maintain its angulated pathway.
Does omohyoid attach to clavicle?
ATTACHMENTS: The Omohyoid attaches from the scapula to the clavicle to the hyoid bone. The inferior belly attaches from the scapula to the clavicle (via a fibrous sling of tissue).
How do you palpate an omohyoid?
Place palpating fingers along the muscle fiber direction just inferior to the hyoid bone. Ask the patient to swallow. Inferior belly. Place palpating fingers along the muscle fiber direction just lateral to SCM and superior to the clavicle (note scalene fiber direction is more vertical).
Can sternocleidomastoid muscle cause jaw pain?
Sternocleidomastoid (scm) muscle pain typically brings complaints of dizziness or sudden hearing loss, headache or jaw pain, even when everything appears to be normal. If this is the case it might be time to consider a muscular or mechanical reason for the symptoms.
What causes digastric muscle pain?
Pain or discomfort in the digastric muscle may be related to muscle tears and sprains or injuries due to overuse. Some conditions which may affect the digastric muscle include myopathy, atrophy, infectious myositis, lacerations, contusions or neuromuscular diseases.
What muscle is separated by two bellies?
Description. The digastric muscle (also digastricus) (named digastric as it has two ‘bellies’) is a small muscle located under the jaw. The term “digastric muscle” refers to this specific muscle. However, other muscles that have two separate muscle bellies include the ligament of Treitz, omohyoid, occipitofrontalis.
What Innervates the omohyoid muscle?
The group of nerves that innervate the omohyoid muscle is called the ansa cervicalis, which is made up of the cervical nerves 1, 2, and 3. The main function of the omohyoid muscle is to depress or lower the hyoid bone, as well as the larynx.
What is a digastric muscle?
The digastric muscle functions during swallowing, chewing, and speech. The anterior belly of the digastric is one of the three suprahyoid muscles which stabilizes the hyoid during swallowing, an action critical in protecting the airway while eating.
