Floor Of Posterior Triangle Muscles

Levator scapulae 4 m.

Floor of posterior triangle muscles.

The following structures are superficial to the prevertebral tascia. The borders of the posterior triangle of the neck are formed by the trapezius muscle posteriorly the sternocleidomastoid muscle anteriorly and the omohyoid muscle inferiorly. Splenius capitis 3 m. The inferior belly crosses the posterior triangle travelling in an supero medial direction and splitting the.

Courses from the hyoid bone en route to the scapula within the pretracheal fascia. Semispinalis capitis 2 m. The roof of the triangle is from superficial to deep skin superficial and deep fascia. The prevertebral fascia forms the floor of the posterior triangle of the neck figure 26 1c and d.

Typically the triangle of auscultation is covered by the scapula. A significant muscle in the posterior triangle region is the omohyoid muscle. To better expose the floor of the triangle up of the posterior thoracic wall in the 6th and 7th intercostal space a patient is asked to fold their arms across their chest laterally rotating the scapulae while bending forward at the trunk somewhat resembling a fetal position. From superior to inferior 1 m.

The floor of the posterior triangle is formed by the splenius muscles the levator scapula the three scalene muscles and the inferior belly of the omohyoid n26. Fascial carpeting of the posterior triangle. Interior belly ot the omohyoid muscle. A significant muscle in the posterior triangle region is the omohyoid muscle.

It is split into two bellies by a tendon. The lower part of the posterior triangle is crossed. 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. The roof is formed by fascia and the floor is formed by the splenius capitus levator scapulae and scalene muscles.

Scalenus posterior 5 m. The posterior triangle of the neck contains many muscles which make up the borders and the floor of the area. The inferior belly crosses the posterior triangle travelling in an supero medial direction and splitting the. The muscular floor of posterior triangle is covered by prevertebral layer of deep cervical fascia which creates the fascial carpeting of the floor of the posterior triangle it creates axillary sheath around subclavian artery and brachial plexus going from the root of the neck to the upper limb.