The scapula is a triplane gizmo with all three planes reacting together. The levator scapulae is passed 5 cm laterally and is sutured to the scapular spine through drill holes. By doing this, it reserves the upper 15 for the supraspinous fossa, and the lower 45 for the infraspinous fossa. Feb 02, 2016 arterial anastomosis around the shoulder joint it is an important arterial anastomosis between the branches of the 1st part of the subclavian artery and 3rd part of the axillary artery, ensuring that an adequate blood flow takes place into the upper limb anastomosis aroun the scapula branches from the subclavian artery the suprascapular artery. Variability of the blood vessels the variations of the branching patterns of the arteries of the limbs have clinical and surgical significance. The shoulder blade is a flat bone with three anglesthe upper superior, bottom inferior and lateral glenoid angle and three bordersthe superior, lateral axillary and medial vertebral border picture 3 on the back side of the shoulder blade, at about twothirds of its height, a bony ridge called the. Learn vocabulary, terms, and more with flashcards, games, and other study tools. It is commonly used in medical english and is part of the current official latin nomenclature, terminologia anatomica. Arterial anastomosis of the elbow radiology reference. If the axillary artery is cut or ligated, an adequate collateral blood supply will arrive to the arm via the dorsal scapular artery, and its. To the infraclavicular region along short nerves of brachial plexus.
Up to 98% of scapula fractures will involve the scapula body and neck 1, 14, 21, 22. Enumerates the arteries that anastomosis around scapula. The scapula, along with the clavicle and the manubrium of the sternum, make up the pectoral shoulder girdle which connects the upper limb of the appendicular skeleton to the axial skeleton. Origination of the left vertebral artery from the aortic arch is not uncommon and the reported prevalence is between 2,4 and 8%. Ligaments and joints of the upper limb deranged physiology.
If the axillary artery is cut or ligated, an adequate collateral blood supply will arrive to the arm via the dorsal scapular artery, and its anastomosis with the circumflex scapular artery. The transverse cervical artery from the subclavian, usually the first part, occasionally the third part, has a descending branch the dorsal scapular artery which accompanies the dorsal scapular nerve. The associated injuries may be multiple andor lifethreatening. It contains the profunda brachii artery and radial nerve. One of the feathers covering the shoulder of a bird. The scapular anastomosis is a system connecting certain subclavian artery and their corresponding axillary artery, forming a circulatory anastomosis around the scapula. For the love of physics walter lewin may 16, 2011 duration. The name scapula as synonym of shoulder blade is of latin origin. You may not embed one of our images on your web page without a link back to our site. Trapeziussparing approach to osteochondromas on the ventral surface of the scapula article pdf available in techniques in shoulder and elbow surgery 193. The suprascapular artery from the subclavian, usually the first part thyrocervical trunk in common with the transverse cervical but occasionally the third part, crosses over the transverse ligament of the scapular notch, passes through the supraspinous fossa, turns around the lateral border of the spine of the scapula and supplies the. Threedimensional topography of scapular nutrient foramina. Three types have been described, taking into account its length, calibre and form quain, 1844 or the positions of the origin and number of recurrent radial arteries ljubomudroff, 1927.
It receives its motor supply from the median nerve b. Muscles connecting the upper limb to the vertebral column. Arterial anastomosis around the scapula deranged physiology. Arterial anastomosis around the scapula this point is labored because. Scapular region university of arkansas for medical sciences. What are muscle attachments on lateral of clavicular shaft. The knowledge of variations of the arteries of the limbs is important in procedures like the cardiac catheterization, arterial grafting and other angiographic procedures. As a result, diagnosis and treatment of scapular injuries may be delayed or suboptimal. The embalmed specimen was a 58yearold caucasian male. The airfilled thoracic cavity acts as noise amplifier, although noise alone is not pathognomonic of.
The scapula, also known as the shoulder blade, is a flat triangular bone located at the back of the trunk and resides over the posterior surface of ribs two to seven. The scapula is an important bone as each scapula provides a point of attachment for a number of muscles that make up the arm and shoulder. It courses around the lateral border of the scapula to enter the infraspinous fossa. This is a quiz called axillary artery and anastomoses around scapula and was created by member benaiah login. Patients will attempt to compensate for this deformity by using muscles of the shoulder girdle, including the levator scapulae and the rhomboids.
Arterial anastomosis around the scapula upper limb gross anatomy usmle step 1 videos scapular anastomosis the pectoral girdle has a rich plexus of arterial vessels that anastomose around. What links here related changes upload file special pages permanent link page. Scapular definition of scapular by medical dictionary. Optimal position of the scapula as one of the four joints of the shoulder complex, the scapula relationship to the rib cage is one of the vital components to achieving optimal functioning of the shoulder complex. Explain scapulohumeral mechanism and overhead abduction.
Variations in the origin and course of the suprascapular artery. In anatomy, the scapula plural scapulae or scapulas, also known as the shoulder bone, shoulder blade, wing bone or blade bone, is the bone that connects the humerus upper arm bone with the clavicle collar bone. Contributing branches arise from as proximal as the first part of the subclavian artery, to as distal as the third part of the axillary artery. The suprascapular and dorsal scapular arteries meet in the supraspinous fossa to form an anastomosis. Scapula fractures have a high association with concomitant injuries.
Describe the axillary artery distribution at scapula. Scribd is the worlds largest social reading and publishing site. Derived, at least in part, from anterior and middle scalene muscle fascia. The blood supply of the bone is important in the formation of callus around the fracture site 25. Arterial anastomosis around the scapula upper limb gross.
Arterial anastomosis around the shoulder joint it is an important arterial anastomosis between the branches of the 1st part of the subclavian artery and 3rd part of the axillary artery, ensuring that an adequate blood flow takes place into the upper limb anastomosis aroun the scapula branches from the subclavian artery the suprascapular artery. A scapulas posterior surface is crossed obliquely by a prominent ridge, the spine, which divides the bone into two concave areas, the. Apr 30, 2020 the suprascapular and dorsal scapular arteries meet in the supraspinous fossa to form an anastomosis. Originally described in 1867, snapping scapula syndrome also known as scapulothoracic crepitus or bursitis results from an imbalance of the scapulothoracic articulation that causes a distinct sound as the scapula is moved across the chest. Anastomosis around the scapula free download as pdf file. Axillary artery and anastomoses around scapula purposegames. The pectoral girdle has a rich plexus of arterial vessels that anastomose around the scapula and its muscles known as the scapular anastomosis.
The shoulder blade is a flat bone with three anglesthe upper superior, bottom inferior and lateral glenoid angle and three bordersthe superior, lateral axillary and medial vertebral border picture 3. The spine of the scapula is a thick, prominent plate of bone that crosses obliquely the medial 45 of the posterior surface of the scapula. Taking advantage of the latissimus dorsi attachment to the scapula and understanding the function of the latissimus dorsi. Scapulothoracic fusions for serratus winging have been discouraged by. It functions to allow blood to flow around the elbow joint no matter which position the joint is in. Functional anatomy and variability of the blood vessels of. Jun 01, 2015 the spine of the scapula is a thick, prominent plate of bone that crosses obliquely the medial 45 of the posterior surface of the scapula. The true statement about the posterior compartment of the arm is. The arterial anastomosis around scapula is principally created between the branches of the first part of the subclavian and the third part of the axillary arteries the scapular anastomosis happens at 2 sites. The subscapularis covers the anterior surface, and the serratus anterior attaches to the inferior angle along the anterior medial border. Mar 23, 2015 the scapula is commonly referred to as the shoulder blade. Scapula shoulder blade anatomy, muscles, location, function. Start studying anatomy muscles of the shoulder region and arm.
If you would like a large, unwatermarked image for your web page or blog, please purchase the appropriate license. It allows blood to flow past the joint in case of occlusion, damage, or pinching of the following scapular arteries. Nov 25, 2017 arterial anastomosis around the scapula upper limb gross anatomy usmle step 1 videos scapular anastomosis the pectoral girdle has a rich plexus of arterial vessels that anastomose around. A movement where the scapula moves laterally away from the spinal column. Anatomy muscles of the shoulder region and arm flashcards. May 12, 2020 the scapula, along with the clavicle and the manubrium of the sternum, make up the pectoral shoulder girdle which connects the upper limb of the appendicular skeleton to the axial skeleton. Explore and learn about the scapula with our 3d interactive anatomy atlas. In classical latin scapula is only used in its plural scapulae. Due to the multiple attachment sites, the primary role of the serratus anterior is to stabilize the scapula during elevation and to pull the scapula forward and around the thoracic cage. Scapula, also called shoulder blade, either of two large bones of the shoulder girdle in vertebrates. This strain may lead to disabling pain and muscle spasm. Unusual ligament of the scapula case report eissn 84038 international journal of anatomical variations 2012 5. Arteries which do not anastomose with the neighboring arteries are called anatomical end arteries, e.
While the circumflex scapular artery and infraspinous branch of the suprascapular artery anastomose with each other, they also join with branches of the dorsal scapular artery that pierce the infraspinatus muscle to enter the infraspinous fossa. Oct 31, 2016 for the love of physics walter lewin may 16, 2011 duration. If the anastomosis is poor and insufficient to preserve the tissue, these arteries are called functional end arteries, e. A scapulas posterior surface is crossed obliquely by a prominent ridge, the spine, which divides the bone into two concave areas, the supraspinous and infraspinous fossae. The scapula is commonly referred to as the shoulder blade. Aug 08, 2018 the arterial anastomosis around scapula is principally created between the branches of the first part of the subclavian and the third part of the axillary arteries. The periarticular arterial anastomosis of the elbow consists of several arteries that supply the elbow joint and its supporting structures. In humans they are triangular and lie on the upper back between the levels of the second and eighth ribs. Jun 02, 2010 anastomosis around the surgical neck of humerus asyaari bin arif azimi nazreen bin azizul azman muhammad farid bin madzlan slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Pdf lesions affecting the ventral surface of the scapula are rare but can be. The anatomical pattern of the anastomosis has been classified into 2 or 3 types depending on different morphological details. Variations of the branching pattern of the aortic arch the most common variation of the aortic arch with two branches common brachiocephalic trunk with left common carotid arteryand left subclavian artery is found with an incidence of 1022% in literature. The circumflex scapular artery branches from the subscapular artery from the third part of the axillary artery and becomes the third contributing part of the scapular anastomoses. It functions to allow blood to flow around the scapula and shoulder joint if there is injury or occlusion.
There are only three muscles that are responsible for enabling the movement of. Like their connected bones, the scapulae are paired, with each scapula on either side of the body being roughly a mirror image of the other. If you would like a large, unwatermarked image for your web page or. Understanding the biomechanics of the slouch posture. Due to the multitude of fracture types amenable to a posterior approach, it is the operative approach of choice for the majority of cases. Anastomosis at the level of the elbow joint connecting the.
The suprascapular and dorsal scapular arteries meet in the supraspinous fossa. The resting or neutral position of the scapula plays an important part in the development of optimal shoulder mechanics. Research shows that 8095% of scapula fractures have associated injuries. Scapular adduction also called scapular extension or retraction. Scapular abduction also called scapular flexion or protraction. Motion facilitates increased blood flow which facilitates healing, which facilitates. Innervation to the serratus anterior is provided by the long tho racic nerve, which arises from the ventral rami of the fifth and seventh cranial nerves. The spine of scapula is a prominent plate of bone, which crosses obliquely the medial fourfifths of the dorsal surface of the scapula at its upper part, and separates the supra from the infraspinatous fossa it begins at the vertical border by a smooth, triangular area over which the tendon of insertion of the lower part of the trapezius glides, and, gradually becoming more. Play this quiz called axillary artery and anastomoses around scapula and show off your skills. A corrective exercise strategy for the forward shoulder.
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