scapula anatomy pdf

Along with the clavicle and manubrium of the sternum, it makes up one of three parts of the pectoral (shoulder) girdle. Conclusions bewegt sich nach lateral, bei der IR bewegt er sich nach med. All rights reserved. Dislocation of the shoulder is frequently seen, and the ED physician must be skilled in several reduction techniques to optimize a successful reduction. Asymmetric morphology of the glenoid was noted with an almost straight line extending medially from the rim at the 3-o'clock position, whereas a concave morthology was noted at the 9-o'clock position. h�b```���̺B ������E%�``�< 'Pd��o�/�c��k.�k��Jݞ$�m�8�����������.�; �|r��O�N��������;�_`� ���A=�W�q9������������%.3�̢́b��Fa�b�FaG���Mf�� movementsandstabilizationofthescapula. Studies focusing on measuring the variability of scapular inclination in the standardised rest position are lacking in the literature. [5], BonzJ,TinloyB.Emergencydepartmentevaluationandtreatmentoftheshoulderandhumerus.Emer, Clin.NorthAm.2015May;33(2):297310.[PubMed:25892723], SamartS,ApivatgaroonA,LakchayapakornK,ChemchujitB.Thecorrelationbetweenacromionaxillarynerve, distanceandupperarmlength;acadavericstudy.JMedAssocThai.2014Aug;97Suppl8:S2733.[PubMed, shoulderdislocationwithconcomitanthumeralshaftandipsilateralscapulafracture:acasereportandreviewof, theliterature.JMedCaseRep.2014Dec16;8:431.[PMCfreearticle:PMC4301949][PubMed:25511744], inclinationandtheglenoidversionconsiderationsforpreoperativeplanning:clinicalradiologicalstudy.BMC, MusculoskeletDisord.2017Jan14;18(1):16.[PMCfreearticle:PMC5237552][PubMed:28088244], https://www.ncbi.nlm.nih.gov/books/NBK531475/?report=printable 4/4, Scapula,PlanofDevelopment,SevenCentres,V. DepartmentofOrthopaedicSurgery,UniversityofKentuckySchoolofMedicine, Thescapulaorshoulderbladeisthebonethatconnectstheclavicletothehumerus.Thescapulaformstheposteriorof, theshouldergirdle.Itisasturdy,flat,triangularbone., Theintrinsicmusclesofthescapulaincludetherotatorcuffmuscles,teresmajor,subscapularis,teresminor, infraspinatus.Thesemusclesattachthescapularsurfaceandassistwithabductionandexternalandinternalrotationof, theglenohumeraljoint.Theextrinsicmusclesincludethetriceps,biceps,anddeltoid.Thethirdgroupofmuscles, includesthelevatorscapulae,trapezius,rhomboids,andserratusanterior.Thesemusclesareresponsibleforrotational. ED evaluation of the shoulder must account for the broad range of potential fracture patterns seen in the clavicle, scapula, and humerus. The average thoracoscapular angle is 45.46°, ranging from 13.1 to 69.0°. 2012 Alteration of scapular stabilizing muscle activation, inflexibility of the muscles and capsule-ligamentous complex around the shoulder may affect the resting position and motion of the scapula. Scapula Anatomy Scapular dyskinesis-altered scapular positioning and motion-is found in association with most shoulder injuries. https://www.ncbi.nlm.nih.gov/books/NBK531475/?report=printable 1/4. The average distance ofshoulder adduction 30°, abduction 45° and90° were 57.9, 57.1 and 52.9 mm, respectively. sup. Inner glenoid rim angle marked as angle α and outer glenoid rim angle marked as angle β were measured from the cross-sectional images of the glenoids at 8 positions: 2-, 3-, 4-, 5-, 6-, 7-, 8- and 9-o'clock positions. https://www.ncbi.nlm.nih.gov/books/NBK531475/?report=printable 2/4, Thevenousdrainageofthescapulaislargelyaccomplishedbytheaxillaryvein,thesuprascapularveins,and. The intrinsic muscles of the scapula include the rotator cuff muscles, teres major, subscapularis, teres minor, and infraspinatus. These insert at the cranial angle and dorsal border of the scapula. As the most proximal bone, the scapula is integral for control and stability of the forelimb, especially in mammals lacking a clavicle (e.g. occursshortlyafterweek10ofhumerusdevelopment,duringwhichitwillformtheglenohumeraljoint. GROSS ANATOMY Lecture Syllabus 2008 Unit #4: Upper and Lower Limbs ANAT 6010 - Gross Anatomy Department of Neurobiology and Anatomy University of Utah School of Medicine . CHAPTER 4 Functional Anatomy of the Shoulder 117 FIGURE 4.5 Rotation of Clavicle on Arm Overhead Elevation A, Without clavicular rotation about sternoclavicular joint, arm can elevate only 30 degrees. TWO SURFACES 1. Variation in the attachment areas of these muscles (supraspinous and infraspinous fossae) may provide insights into adaptations for differing habitual needs, e.g. The authors can predict the danger zone in the location of the anterior upper branch of the axillary nerve. Congenital anomalies of the coracoid process are rare such as bifid coracoid processes. 1. h��TmO�0�+���8� !�eH+T���k#ҴJ��~w�ƴ}[�G���幗T&:a��D+�. A glenohumeral joint with a lax capsule and ligaments might be stabilized dynamically in the end-range of motion if the glenoid concavity is maintained and the function of the external and internal rotators, which are efficient stabilizers in this position, is enhanced. 2 G24: Upper Limb Overview and Shoulder and Axilla At the end of this lecture, students should be able to master the following: 1) Upper limb overview a) Cutaneous innervation of the upper limb • Compare and contrast … However, the current radiological workup is based on conventional radiographs, CT or MRI obtained at 0 degree of abduction and at muscular relaxation. Results ResearchGate has not been able to resolve any citations for this publication. 2013 Jul;95-B(7):935-41. doi: 10.1302/0301-620X.95B7.31028. Thescapulaisanimportantboneinthefunctionoftheshoulderjoint.Itengagesin6typesofmotion,whichallowfor. It is a sturdy, flat, triangular bone. 2. Measurement of the size as well as the angle of the coracoid pillars to the glenohumeral space has been used to provide the anatomical positioning of the coracoid process and has aided in radiographic imaging. © 2008-2021 ResearchGate GmbH. An MR-based technique for determination of the subacromial space width in the living with and withou... Review of the pathology and congenital anomalies of the coracoid process with clinical applications. -Its paralysis causes a winged scapula. – anterior humeral circumflex and posterior humeral circumflex artery supply blood to the head of the humerus, deltoid and teres minor muscle. Using 12 mm as radius, measured the minimum insertion angle of anchor, marked as angle γ. 78, 81379 München Tel. The highest values of retroversion are attained by the glenoid in the cranial section (average -9.96°, range -29.7 to +13.2°). usingtheshoulderinitsmultitudeofpositions. Is there an association between the individual anatomy of the scapula and the development of rotator cuff tears or osteoarthritis of the glenohumeral joint? Glenoid morphology was noted for each position. [4], Acasestudywasperformedonapatientwhopresentedwithatriadofhumeralfracture,scapularfracture,and, traumaticanteriordislocationofthehumerus.Itisrareforthesethreeinjuriestooccurtogether.Thecasereport, demonstratedthatopenreductionandinternalfixationofthefracturebeforereducingthedislocationshouldbe, performedtoreducetheriskofneurovascularcompromise. Preoperative planning with the aid of imaging methods is a principal factor in successful surgery on the shoulder. The spine terminates as the acromion, which forms the summit of the shoulder. • The glenoid cavity is deepened by the presence of a fibrocartilaginous rim called the glenoid labrum. 2 ARTICULATION Articulation is between: • The rounded head of the humerus and • The shallow, pear-shaped glenoid cavity of the scapula. andminor,andthetrapeziusmuscles.Upwardrotationisaccomplishedbythetrapeziusandserratusanteriormuscles. The scapula provides attachment to several groups of muscles. Commonly known as the shoulder blade, the scapula is a relatively flat bone which articulates with both the humerus of the upper arm, forming the glenohumeral joint, and the clavicle (collar bone) forming the acromioclavicular joint. PDF | On Apr 13, 2020, James P Henry and others published Anatomy, Head and Neck, Levator Scapulae Muscles | Find, read and cite all the research you need on ResearchGate The deep muscle group holds the body up towards the scapula when the cat is standing, and is composed of the serratus ventralis, trapezius, and rhomboideus muscles. This article will review the relevant anatomy, etiology, clinical evaluation, diagnostic testing, and treatment of scapular winging. The dynamic stability index, a new biomechanical parameter reflecting these force components and the concavity-compression mechanism, was calculated. Thescapularbloodsupplyiscomplexduetoitspositionandroleasacriticalcomponentoftheshoulderjointandthe, asthescapularanastomosis.Contributoryarteriestothisanastomosisarethedorsalscapularartery,thesuprascapular, withtheintercostalarteries.Thescapularanastomosisallowsforcollateralbloodflowwhenlyingsupineandwhen. The deep lateral scapular muscles, the supraspinatus and infraspinatus, represent key shoulder extensor and flexor muscles respectively, together, Join ResearchGate to discover and stay up-to-date with the latest research from leading experts in, Access scientific knowledge from anywhere. From acromion edge reference, where "Y" is axillary nerve distance in mm and "x" is upper arm length in cm, the relation were Y= 2.3x-10, Y= 2x-2 and Y= 2x-7with the accuracy rate were 88.57%, 85.71% and 81.43%, respectively. Costal surface: Also known as ventral surface or subscapular fossa Presents a broad concavity (directed medially and forwards) Medial two- … inf. The scapula provides attachment to several groups of muscles. With muscle activity a reduction of the subacromial space of 29% (p < 0.05) occurred at 60 degrees whereas at 120 degrees a 51% (p < 0.05) increase was noted.

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