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The erector spinae (/ ɪ ˈ r ɛ k t ər ˈ s p aɪ n i / irr-EK-tər SPY-nee) [1] or spinal erectors is a set of muscles that straighten and rotate the back.The spinal erectors work together with the glutes (gluteus maximus, gluteus medius and gluteus minimus) to maintain stable posture standing or sitting.
Muscles Worked: Erector spinae muscles (which help with spine stabilization), rectus abdominis and glutes. Common Mistakes: Arching the spine, rotating the hips, shifting your body weight from ...
The latissimus dorsi is a potential source of muscle for breast reconstruction surgery after mastectomy (e.g., Mannu flap) [12] or to correct pectoral hypoplastic defects such as Poland's syndrome. [13] [14] An absent or hypoplastic latissimus dorsi can be one of the associated symptoms of Poland's syndrome. [15] [16]
erector spinae: 2 1 external abdominal oblique: Torso, Abdomen, right/left external surfaces of ribs 5-12 linea alba, pubic tubercle, anterior half of iliac crest: lower posterior intercostal arteries, subcostal artery, deep circumflex iliac artery: motor: intercostal nerves (T7-T11), subcostal nerve sensory: iliohypogastric nerve
Spinalis dorsi, the medial continuation of the sacrospinalis, is scarcely separable as a distinct muscle.It is situated at the medial side of the longissimus dorsi, and is intimately blended with it; it arises by three or four tendons from the spinous processes of the first two lumbar and the last two thoracic vertebrae: these, uniting, form a small muscle which is inserted by separate tendons ...
Major muscles included are the pelvic floor muscles, transversus abdominis, multifidus, internal and external obliques, rectus abdominis, erector spinae (sacrospinalis) especially the longissimus thoracis, and the diaphragm. The lumbar muscles, quadratus Lumborum (deep portion), deep rotators, as well as cervical muscles, rectus capitus ...
inferiorly, by the latissimus dorsi; laterally, by the medial border of the scapula; The superficial floor of the triangle is formed by the lateral portion of the erector spinae muscles. Deep to these muscles are the osseous portions of the 6th and 7th ribs and the internal and external intercostal muscles.
The posterior layer is thick, being reinforced by the aponeurosis (origin) of the latissimus dorsi muscle. [1]: 274 It consists of a superficial lamina derived primarily from the latissimus dorsi and serratus posterior inferior, and a deeper lamina which forms a retinacular sheet encapsulating the paraspinal muscles. [3]