Floor Of Occipital Triangle

The suboccipital triangle has three boundaries contained between a floor and roof.

Floor of occipital triangle.

Its floor is formed from above downward by the splenius capitis levator scapulæ and the scalenus medius and posterior. The roof of the triangle is from superficial to deep skin superficial and deep fascia. This ligament is broad and extends from the posterior margin of the foramen magnum to the posterior arch of atlas. The roof is located superficially i e.

It is covered by the skin the superficial and deep fasciæ and by the platysma below. The occipital triangle the larger division of the posterior triangle is bounded in front by the sternocleidomastoideus. Floor roof of the suboccipital triangle. Greater occipital nerve c2 dorsal ramus upper back of the skull.

Prevertebral fascia covering the floor of the posterior triangle. Floor posterior arch of atlas and posterior atlantooccipital membrane ligament. Below by the omohyoideus. The semispinalis capitis occasionally splenius capitis levator scapulae and middle scalene and posterior muscles line the floor of the occipital triangle in that craniocaudal order.

Behind by the trapezius. Lesser occipital nerve cervical plexus lateral part of the back of the skull. Posterior atlanto occiptal membrane and posterior arch of the c1 vertebrae atlas cutaneous innervation over the triangle. Posterior and is formed by the semispinalis capitis muscle and a dense layer of adipose tissue 1.