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The rhomboid muscles are a group of deep intrinsic shoulder muscles that play a crucial role in upper limb movement and stability. Located in the upper back, these muscles include the rhomboid major and minor, which work together with other muscles to form the shoulder girdle and facilitate scapular movement and stabilization. The rhomboid muscles receive their vascular supply from the dorsal scapular artery and are innervated by the dorsal scapular nerve. Their primary function is scapular retraction, which helps maintain correct posture and prevents winging of the scapula. However, due to constant postural strain, the rhomboid muscles can become dysfunctional, leading to issues with shoulder mechanics and pain.
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What You'll Learn
Rhomboid major and minor
The rhomboid muscles are a group of muscles formed by the rhomboid major and minor. They are located in the upper back, under the trapezius muscle, and are responsible for the movement and stability of the shoulder girdle and scapula. The rhomboid major is a quadrangular or quadrilateral muscle located inferior to the rhomboid minor. The rhomboid minor, on the other hand, is a cylindrical muscle that originates at the ligamentum nuchae and C7 and T1 vertebra.
The rhomboid muscles receive their vascular supply from the dorsal scapular artery (DSA), which arises from the subclavian artery or, in some cases, the thyrocervical trunk. The motor function of these muscles is controlled by the dorsal scapular nerve (DSN), which originates from the ventral ramus of the spinal nerve root C5. The dorsal scapular nerve also provides innervation to the levator scapulae muscle.
The main function of the rhomboid muscles is scapular retraction, which involves sliding the scapula superiorly and medially along the trunk. This movement helps to maintain correct posture when sitting, standing, and walking. Additionally, the rhomboid muscles work with other muscles such as the serratus anterior, trapezius, and levator scapulae to elevate, retract, and rotate the scapula, as well as to anchor the scapula and prevent "winging".
Dysfunction, weakness, or nerve damage to the rhomboid muscles can lead to "winging" of the scapula and inferior scapular angle rotation. Rhomboid muscle pain can be caused by injuries, strains, tears, or overuse. It is often associated with poor shoulder mechanics and can be treated with rest, stretching, and exercises such as foam rolling or using a self-massager tool.
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Shoulder girdle
The rhomboid muscles are a group of deep intrinsic shoulder muscles that, together with other muscles, form the shoulder girdle. The shoulder girdle is a group of muscles that holds the shoulder blade and shoulder stable. The rhomboid muscles are made up of two muscles: the rhomboid major and the rhomboid minor. These muscles are located in the upper back, under the trapezius muscle, and are responsible for the movement of the scapula.
The rhomboid major is a broad, quadrangular muscle located in the upper part of the thoracic region of the back. It originates from the spinous processes of the second to fifth thoracic vertebrae (T2-T5) and inserts into the medial border of the scapula. The rhomboid major works in conjunction with other muscles, such as the levator scapulae, to elevate and retract the scapula.
The rhomboid minor is a smaller, cylindrical muscle that originates at the ligamentum nuchae and C7 and T1 vertebra. It inserts at the scapula's medial border near the base of the spine of the scapula. The rhomboid minor also works with other muscles to stabilize the scapula and prevent "winging."
Together, the rhomboid major and minor muscles retract, elevate, and rotate the scapula. They also protract the medial border of the scapula, keeping it in position at the posterior thoracic wall. This helps to maintain correct posture when sitting, standing, and walking. Additionally, the rhomboid muscles are important for the movement and stability of the shoulder girdle, allowing for a full range of motion in the upper extremity.
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Upper limb movement
The rhomboid muscles are essential for upper limb movement and stability. They are a group of deep intrinsic shoulder muscles, with two bilateral muscles on each side of the upper back: the rhomboid major and the rhomboid minor. These muscles work together to move and stabilise the scapula, or shoulder blade, against the thoracic wall.
The rhomboid muscles retract, elevate and rotate the scapula, and also protract the medial border of the scapula, keeping it in position against the posterior thoracic wall. This provides an anchor point for various muscles of the upper limb to act upon, and a fulcrum around which the upper limb can move.
The rhomboids are also vital for actions such as pulling, throwing and overhead arm movement. They are key mediators in the scapulothoracic kinetic chain, integrating the movements of the thoracic spine and rib cage with upper limb mechanics.
The rhomboids also contribute to glenohumeral joint stability, which is necessary for precise upper limb movements. This stability is achieved through their concerted action with the rotator cuff, and their opposition to the serratus anterior, pectoralis minor, and latissimus dorsi muscles.
Weakness or loss of nerve function in the rhomboids can cause issues with upper limb movement, such as winging of the scapula and inferior scapular angle rotation. Strengthening the rhomboids can improve posture and relieve pain caused by postural strain, allowing for a greater range of motion in the upper limbs.
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Scapular retraction
The rhomboid muscles are a group of deep intrinsic shoulder muscles, comprising the rhomboid major and rhomboid minor. These muscles are located in the upper back, underneath the trapezius muscle, and are responsible for scapular retraction.
The rhomboid muscles work in conjunction with other muscles, such as the levator scapulae, serratus anterior, trapezius, and pectoralis muscles, to achieve scapular retraction. These muscles collaborate to anchor the scapula and prevent a condition known as "winging," where the medial border of the scapula lifts away from the rib cage.
By contracting, the rhomboid muscles fix and stabilise the scapula in position. This stability is crucial for the smooth movement of the shoulder joint and the upper limb. Additionally, the rhomboid muscles play a role in elevating and rotating the scapula, contributing to movements such as pulling, throwing, and overhead arm motions.
Dysfunction, weakness, or loss of nerve function in the rhomboid muscles can lead to scapular winging and impaired scapular rotation. This can result in poor shoulder mechanics and pain in the surrounding soft tissues, especially during activities that involve raising the arm above shoulder height, such as tennis or volleyball. Therefore, maintaining the health and proper function of the rhomboid muscles is essential for overall shoulder health and movement.
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Rhomboid injuries and pain
Rhomboid muscles are a group of muscles in the upper back that attach the edges of the shoulder blades to the spine. They are important for upper limb movement and stability of the shoulder girdle and scapula. The main action of the rhomboids is scapular retraction, which involves sliding the scapula superiorly and medially along the trunk, rotating the glenoid cavity inferiorly, and dropping the shoulder girdle.
Rhomboid muscle pain may be caused by an injury, strain, sprain, or overuse. The pain is typically felt in the upper back, between the shoulder blades, and may increase with movement or breathing. Risk factors for rhomboid muscle pain include repetitive motions, overstretching, prolonged sitting, and poor posture. Certain health conditions, such as osteoarthritis, myositis, polymyalgia rheumatica, and rheumatoid arthritis, can also contribute to rhomboid muscle pain.
If you are experiencing rhomboid muscle pain, it is important to stop the activity that caused the pain and allow your muscles to rest. Gentle exercises, such as using a foam roller or a tennis ball to massage and loosen the muscles, can aid in recovery. Additionally, pain relief medications, anti-inflammatory drugs, and hot and cold therapy may provide relief. For severe or persistent pain, it is recommended to consult a doctor or physical therapist, who can suggest specific exercises and treatments to alleviate the pain.
To prevent rhomboid injuries and pain, it is crucial to warm up properly before engaging in sports or physical activities. Stretching after exercise and taking regular breaks during activity can also help. Maintaining good posture, especially when working at a desk or using a computer, is important for preventing strain on the rhomboid muscles.
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Frequently asked questions
The rhomboid muscles are a group of large rhombus-shaped muscles in the upper back, made up of the rhomboid major and the rhomboid minor.
The rhomboid muscles are important for upper limb movement and stability of the shoulder girdle and scapula. They retract, elevate and rotate the scapula, and protract the medial border of the scapula, keeping it in position at the posterior thoracic wall.
You will feel pain or tension in your upper back between your shoulder and spine. This can be caused by an injury, strain, tear or overuse.
You can try at-home treatments such as using a tennis ball or foam roller to massage the area, or buying an electric self-massager. You should also ensure you are stretching before and after exercise, and taking breaks if you sit at a desk all day.
