EIU PED 2440 - Kinesiology 5- Chapter 5 The Shoulder Joint

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Chapter 5 The Shoulder JointThe Shoulder JointSlide 3BonesSlide 5Slide 6Glenohumeral JointSlide 8Slide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15Slide 16Slide 17Pairing of shoulder girdle & shoulder joint movementsMovementsSlide 20Slide 21Slide 22Slide 23MusclesSlide 25Slide 26NervesSlide 28Slide 29Slide 30Deltoid MusclePectoralis Major MuscleLatissimus Dorsi MuscleCoracobrachialis MuscleRotator cuff musclesSlide 36Subscapularis MuscleSupraspinatus MuscleInfraspinatus MuscleTeres Minor MuscleTeres Major MuscleGlenohumeral FlexionGlenohumeral ExtensionGlenohumeral AbductionGlenohumeral AdductionGlenohumeral Internal RotationGlenohumeral External RotationGlenohumeral Horizontal AbductionGlenohumeral Horizontal AdductionGlenohumeral Diagonal AbductionGlenohumeral Diagonal AdductionWeb SitesSlide 53Slide 54Slide 55Slide 56© McGraw-Hill Higher Education. All rights © McGraw-Hill Higher Education. All rights reserved. reserved. 5-5-11Chapter 5 Chapter 5 The Shoulder JointThe Shoulder JointManual of Structural KinesiologyManual of Structural KinesiologyR.T. Floyd, EdD, ATC, CSCSR.T. Floyd, EdD, ATC, CSCS© McGraw-Hill Higher Education. All rights © McGraw-Hill Higher Education. All rights reserved. reserved. 5-5-22The Shoulder JointThe Shoulder Joint•Shoulder joint is attached to axial skeleton Shoulder joint is attached to axial skeleton via the clavicle at SC jointvia the clavicle at SC joint•Scapula movement usually occurs with Scapula movement usually occurs with movement of humerusmovement of humerus–Humeral flexion & abduction require scapula Humeral flexion & abduction require scapula elevation, rotation upward, & abductionelevation, rotation upward, & abduction–Humeral adduction & extension results in scapula Humeral adduction & extension results in scapula depression, rotation downward, & adductiondepression, rotation downward, & adduction–Scapula abduction occurs with humeral internal Scapula abduction occurs with humeral internal rotation & horizontal adductionrotation & horizontal adduction–Scapula adduction occurs with humeral external Scapula adduction occurs with humeral external rotation & horizontal abductionrotation & horizontal abduction© McGraw-Hill Higher Education. All rights © McGraw-Hill Higher Education. All rights reserved. reserved. 5-5-33The Shoulder JointThe Shoulder Joint•Wide range of motion of the shoulder Wide range of motion of the shoulder joint in many different planes requires a joint in many different planes requires a significant amount of laxitysignificant amount of laxity•Common to have instability problemsCommon to have instability problems–Rotator cuff impingementRotator cuff impingement–Subluxations & dislocationsSubluxations & dislocations•The price of mobility is reduced stabilityThe price of mobility is reduced stability•The more mobile a joint is, the less The more mobile a joint is, the less stable it is & the more stable it is, the stable it is & the more stable it is, the less mobileless mobile© McGraw-Hill Higher Education. All rights © McGraw-Hill Higher Education. All rights reserved. reserved. 5-5-44BonesBones•Scapula, clavicle, & humerus serve as Scapula, clavicle, & humerus serve as attachments for shoulder joint musclesattachments for shoulder joint muscles–Scapular landmarksScapular landmarks•supraspinatus fossasupraspinatus fossa•infraspinatus fossainfraspinatus fossa•subscapular fossasubscapular fossa•spine of the scapulaspine of the scapula•glenoid cavityglenoid cavity•coracoid processcoracoid process•acromion processacromion process•inferior angleinferior angleFrom Seeley RR, Stephens TD, Tate P: Anatomy and physiology, ed 7, New York, 2006, McGraw-Hill© McGraw-Hill Higher Education. All rights © McGraw-Hill Higher Education. All rights reserved. reserved. 5-5-55BonesBones•Scapula, clavicle, & humerus serve Scapula, clavicle, & humerus serve as attachments for shoulder joint as attachments for shoulder joint musclesmuscles–Humeral landmarksHumeral landmarks•HeadHead•Greater tubercleGreater tubercle•Lesser tubercleLesser tubercle•Intertubercular grooveIntertubercular groove•Deltoid tuberosityDeltoid tuberosity© McGraw-Hill Higher Education. All rights © McGraw-Hill Higher Education. All rights reserved. reserved. 5-5-66BonesBones•Key bony landmarksKey bony landmarks–Acromion processAcromion process–Glenoid fossaGlenoid fossa–Lateral borderLateral border–Inferior angleInferior angle–Medial borderMedial border–Superior angleSuperior angle–Spine of the scapula Spine of the scapula© McGraw-Hill Higher Education. All rights © McGraw-Hill Higher Education. All rights reserved. reserved. 5-5-77Glenohumeral JointGlenohumeral Joint•multiaxial ball-multiaxial ball-&-socket&-socket•enarthrodialenarthrodial© McGraw-Hill Higher Education. All rights © McGraw-Hill Higher Education. All rights reserved. reserved. 5-5-88Glenohumeral JointGlenohumeral Joint–Glenoid labrum Glenoid labrum slightly slightly enhances enhances stability stability© McGraw-Hill Higher Education. All rights © McGraw-Hill Higher Education. All rights reserved. reserved. 5-5-99Glenohumeral JointGlenohumeral Joint–Glenohumeral Glenohumeral ligaments provide ligaments provide stabilitystability•especially especially anteriorly & anteriorly & inferiorlyinferiorly•inferior inferior glenohumeral glenohumeral ligament ligament© McGraw-Hill Higher Education. All rights © McGraw-Hill Higher Education. All rights reserved. reserved. 5-5-1010Glenohumeral JointGlenohumeral Joint–Ligaments are quite lax until extreme Ligaments are quite lax until extreme ranges of motion reached due to wide ranges of motion reached due to wide range of motion involvedrange of motion involved–Stability is sacrificed to gain mobilityStability is sacrificed to gain mobility© McGraw-Hill Higher Education. All rights © McGraw-Hill Higher Education. All rights reserved. reserved. 5-5-1111Glenohumeral JointGlenohumeral Joint•Determining Determining exact range of exact range of each each movement is movement is difficult due to difficult due to accompanying accompanying shoulder girdle shoulder girdle movementmovement© McGraw-Hill Higher Education. All rights © McGraw-Hill Higher Education. All rights reserved. reserved. 5-5-1212Glenohumeral JointGlenohumeral Joint–90 to 95 degrees 90 to 95 degrees abductionabduction–0 degrees adduction, 0 degrees adduction, 75 degrees anterior


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EIU PED 2440 - Kinesiology 5- Chapter 5 The Shoulder Joint

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