Taking the medial to lateral differences first: a common pattern is that the rhomboids are locked long (overstretched, eccentrically loaded) with the serrati locked short (concentrically loaded), pulling the scapula away from the spine. The rhombo-serratus muscle (the rhomboid-serratus anterior sling) often shows medial to lateral or side-to-side imbalance that can be corrected manually. If the scapula is cut away from the underlying tissues, the connection between the rhomboids and serratus remains very strong ( Fig. If we could fold the glenoid section of the scapula back to expose the serratus, we would see clearly that there is one muscle – the rhombo-serratus muscle, so to speak – with the medial border of the scapula glued into its fascia about halfway in its journey from the upper thoracic spinous processes to the lateral ribs ( Fig. In dissection, the fascial continuity with the rhomboids is very clear. 146, to follow another of the directions within the serratus). The serratus originates on the profound side of the medial border of the scapula and passes to attachments on the first nine ribs, but the part that attaches to ribs 5 through 9 provides the spiral continuity we are following (see Discussion 2, the Upper Spiral Line and Forward Head Posture, p. The SPL track as described above passes primarily through the lower part of the serratus anterior muscle. The rhomboids connect to a goodly portion of the serratus, which is a complex muscle with many internal fiber directions. Thus the scapula is suspended between them, and its position will depend on the relative myofascial tone of these two. 6.5 Taken together, the rhomboids and serratus anterior, the next continuity in the Spiral Line, form a myofascial sling for the scapula. In dissection, the connection of the rhomboids to the serratus anterior is stronger and more ‘meaty’ than the connection of either muscle to the scapula itself.įig. The SPL, however, continues on a less obvious but nevertheless very strong fascial connection with the serratus anterior, deep to the scapula ( Fig. (DVD ref: Anatomy Trains Revealed)įrom the medial border of the scapula, there is a direct fascial connection to the infraspinatus and subscapularis of the rotator cuff, which we will explore with the Arm Lines in the next chapter. (B) The same dissection with the scapula (and rotator cuff muscles) still attached to the ‘rhombo-serratus’ sling. The longer and heavier indicator lines indicate the median sagittal midline, front (left) and back (right). The scapula has been removed from this specimen, leaving a visible line, but no break in the rhombo-serratus part of the sheet. 6.4 (A) A dissection of the upper Spiral Line, showing the clear fascial continuities wrapped from the skull to the hip, by way of the splenii, rhomboids, serratus anterior, and abdominal fasciae containing the oblique muscles.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |