The rhomboid muscles are placed on either side of the upper back within the shoulder blades. The rhomboids muscles are attached to the edges of the shoulder blades to your spine, lie deep to the trapezius.There are two rhomboid muscles –
1.Rhomboid minor
2.Rhomboid major
Rhomboid Minor Muscle: Origin, Insertion, Nerve Supply & Action
The rhomboid minor muscle is on both sides of the back, where it placed between the spine and the shoulder blades.
Origin: Spinous processes of C7-T1 vertebrae
Insertion: Medial border of the scapula, at the level of the spine of scapula
Innervation: Dorsal scapular nerve.
Actions: Retraction and rotation of the scapula.
Rhomboid Minor Muscle: Origin, Insertion, Nerve Supply & Action
The rhomboid major muscle is on both sides of the back, within the spine and the shoulder blades.
Origin: Rhomboid Major originate from spinous processes of T2 – T5 vertebrae.
Insertion: It inserts into the medial border of the scapula from the level of the spine to the inferior angle.
Function: Rhomboid Major retract scapula and rotate it to depress glenoid cavity; fix scapula to thoracic wall.
Nerve Supply: Dorsal scapular nerve ( C4 and C5).
Blood Supply: Dorsal scapular artery.
Upper Extremity Muscle Atlas
- Abductor Pollicis Longus
- Abductor Digiti Minimi
- Abductor Pollicis Brevis
- Adductor Pollicis
- Anconeus
- Biceps Brachii
- Brachioradialis
- Brachialis
- Coracobrachialis
- Deltoid
- Extensor Carpi Radialis Longus
- Extensor Carpi Radialis Brevis
- Extensor Carpi Ulnaris
- Extensor Digitorum
- Extensor Digiti Minimi
- Extensor Indicis
- Extensor Pollicis Longus
- Extensor Pollicis Brevis
- Flexor Carpi Radialis
- Flexor Carpi Ulnaris
- Flexor Digitorum Profundus
- Flexor Digitorum Superficialis
- Flexor Digiti Minimi Brevis
- Flexor Pollicis Brevis
- Flexor Pollicis Longus
- Infraspinatus
- Interosseous Muscles, Dorsal
- Interosseous Muscles, Palmar
- Levator Scapulae
- Latissimus Dorsi
- Opponens Digiti Minimi
- Opponens Pollicis
- Pectoralis Major
- Pectoralis Minor
- Palmaris Longus
- Pronator Quadratus
- Pronator Teres
- Rhomboid Major and Minor
- Subscapularis
- Supinator
- Serratus Anterior
- Supraspinatus
- Trapezius
- Triceps Brachii
- Teres Major
- Teres Minor