Musculus rhomboideus cervicis
The rhomboideus cervicis originates from the funicular part of the nuchal ligament (over cervical vertebrae C2-C5) and inserts on the medial surface of the scapular cartilage. Its actions are to elevate the scapula and protract the limb, and to help support the trunk between the forelimbs. It is innervated by ventral branches of cervical spinal nerves (roughly C4-C6). It is part of the extrinsic forelimb musculature that forms the muscular sling suspending the thorax between the forelimbs.
Origin: Funicular part of the nuchal ligament (over cervical vertebrae C2-C5)
Insertion: Medial surface of the scapular cartilage
Action: Elevates the scapula and protracts the limb; supports the trunk between the forelimbs
Innervation: Ventral branches of cervical spinal nerves (C4-C6)
Isolated injury is uncommon. Relevant in evaluations of shoulder and neck function and after trauma to the withers or cranial thoracic region. It contributes to scapular stability.
## Overview Scapular instability is poor control of the shoulder blade during movement, often from weakness of the rhomboideus or serratus muscles. It produces winging of the scapula, uneven shoulder
Persistent asymmetry or reduced shoulder mobility after trauma should be evaluated.
## Overview Scapular instability is poor control of the shoulder blade during movement, often from weakness of the rhomboideus or serratus muscles. It produces winging of the scapula, uneven shoulder height, reduced forelimb reach, and difficulty maintaining consistent contact. ## Causes Muscle weakness, nerve dysfunction, or pain-related inhibition. ## Diagnosis Visual assessment of scapular movement and palpation. ## Treatment Targeted strengthening, physiotherapy, and treatment of any underlying pain or nerve issue. ## Recovery and Prognosis Good with appropriate rehabilitation. ## Prevention Balanced conditioning. Signs include: winging of the scapula during movement; uneven shoulder height; reduced forelimb reach; difficulty maintaining consistent contact
Isolated injury is uncommon. Relevant in evaluations of shoulder and neck function and after trauma to the withers or cranial thoracic region. It contributes to scapular stability.
Persistent asymmetry or reduced shoulder mobility after trauma should be evaluated.
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