RHOMBOIDS

GENERAL INFORMATION

The rhomboids are muscles located in the upper back that connect the scapula with the vertebrae of the spinal column. They are situated deep to the trapezius and are primarily responsible for retracting the scapula. Which means pulling the shoulder blades together. Consequently, these muscles play a crucial role in shoulder movement and stability.

ORIGIN OF RHOMBOIDS

The rhomboid major originates from the spinous processes of the T2-T5 vertebrae, while the rhomboid minor originates from the spinous processes of the C7-T1 vertebrae. Therefore, both muscles have distinct points of origin that support their function in scapular movement.

INSERTION POINT

Both muscles insert onto the medial border of the scapula, from the level of the spine to the inferior angle. Thus, their insertion points are essential for connecting the scapula to the spine and facilitating coordinated movements.

MAJOR ARTERIES

The dorsal scapular artery is a branch of the subclavian artery. It supplies the rhomboids and ensures adequate blood flow to the muscles.

NEURAL INNERVATION

The dorsal scapular nerve innervates both rhomboid muscles, so proper nerve function is crucial for their activation and control.

TRIGGER POINT

The trigger points are typically located in the muscle belly, which can be palpated between the shoulder blade and the spine. Addressing these points through manual pressure or massage can relieve discomfort.

CONCENTRIC FUNCTION

The primary function of this muscle is to retract the scapula, pulling the shoulder blades together. Additionally, they assist in the upward rotation of the scapula, such as during overhead lifting movements. Thus, these muscles are essential for shoulder blade retraction and rotation.

ECCENTRIC FUNCTION

This muscle helps control the speed and motion of the scapula during protraction (moving the shoulder blades away from the spine) and downward rotation. Consequently, they play a critical role in maintaining stability and control during these movements.

ISOMETRIC FUNCTION

The rhomboids help stabilise the shoulder blades against the thoracic wall during upper-limb movements, providing essential support during various activities.

RELATED MUSCLES (SCIENTIFIC NAMES)

• Trapezius: Supports the rhomboids in scapular retraction and rotation, crucial for upper back stability and movement.
• Levator Scapulae: The levator scapulae assist the rhomboids in elevating the scapula. It helps in neck and shoulder movements and enhances the upper back’s functional synergy.
• Serratus Anterior: Works in opposition and conjunction with the rhomboids during complex shoulder movements, providing balance to scapular motion.

ANTAGONIST MUSCLES

• Serratus Anterior: Acts as the direct antagonist to the rhomboids by drawing the scapula forward around the rib cage, opposing the rhomboid’s retraction.
• Pectoralis Major: Facilitates the forward movement and downward rotation of the scapula, contrasting the upward and medial movement induced by the rhomboids.
• Pectoralis Minor: Further assists the Pectoralis Major in pulling the scapula forward and down, which is essential in maintaining a balance of scapular kinematics.

COMMON INJURIES

• Muscle Strain: Common in activities that demand repetitive scapular retraction and can lead to painful conditions if not addressed.
• Shoulder Impingement Syndrome: This occurs when shoulder muscles rub against the top part of the shoulder blade, often involving the rhomboids due to their anatomical positioning.
• Postural Strain: Frequent in individuals with sedentary lifestyles, where continuous poor posture leads to chronic stress and pain in the rhomboid muscles.

EXERCISES

• Seated Rows: Focus on pulling actions that specifically target the rhomboid muscles, which are critical for back strength and posture improvement.
• Bent-over Rows: Engage the rhomboids through a full range of motion, promoting muscle growth and endurance.
• Scapular Retraction: Encourage the squeezing of the shoulder blades together, which directly activates the rhomboids and enhances scapular stability.
• Reverse Flyes: Aim to strengthen the posterior shoulder and upper back, which includes the rhomboids, which are crucial for balancing shoulder mechanics.
• Prone Horizontal Abductions: Move the arms horizontally away from the body to strengthen the rhomboids and other upper back muscles, promoting upper back health and function.

STRETCHES

• Doorway Stretch: Stretches the chest and front shoulder muscles, indirectly relieving tension in the rhomboids by promoting better posture and reduced forward shoulder roll.
• Cross-body Shoulder Stretch: This stretch directly targets the rhomboids and relieves tension, improving flexibility and reducing the risk of injury.
• Neck Stretches: These exercises alleviate tension in the neck and upper back, where tightness can affect rhomboid muscle health and function.
• Eagle Arms Yoga Pose: This pose provides a deep stretch to the upper back, which is particularly beneficial for the rhomboids and trapezius muscles.
• Child’s Pose: This pose offers a gentle way to release tension throughout the back. It also includes rhomboids, which promote relaxation and muscle recovery.

Regularly incorporating these targeted exercises and stretches can greatly improve the health and functionality of the rhomboid muscles. It is also contributing to better posture, reduced back pain, and enhanced shoulder stability.