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EIU PED 2440 - shoulder-3

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A Review of the Shoulder Muscles and Their ActionsQuestionsPracticeSlide 4Slide 5Slide 6PowerPoint PresentationSlide 8Slide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15Slide 16Slide 17Slide 18Slide 19Slide 20Slide 21Slide 22Slide 23Shoulder Muscle ExercisesMajor Muscles of the ShoulderSlide 26Slide 27Slide 28Slide 29Slide 30Slide 31Slide 32Slide 33Name a shoulder muscle isolated with the following exercises.What is the action to the left? What muscles perform that action?Rotator Cuff ExercisesShoulder Related InjuriesSlide 38Shoulder DislocationImpingement SyndromeImpingement SyndromeSlide 42Rotator Cuff TearsRotator cuffMovement of RC MusclesRotator Cuff InjurySlide 47Slide 48Slide 49Glenoid LabrumLabral TearSlide 52A Review of the Shoulder Muscles and Their ActionsQuestions•What muscle works closely with the anterior deltoid?•Pectoralis major•What muscle is involved in any lifting movements? •Deltoid•What is the major (strongest) extensor muscle?•Latissimus Dorsi•Name the four rotator cuff muscles.•Subscapularis, Supraspinatus, Infraspinatus, and Teres minor.•What muscle works closely with the infraspinatus?•Teres minorPractice•Name the muscles for Horizontal Adduction•Pect Major (both)•Corachobrachialis•Deltoid (anterior)•Name the muscles for Horizontal Abduction•Deltoid (post)•Infraspinatus•Teres minor•LatsPractice•List the muscles that do flexion of the shoulder•Coracobrachialis•Pectoralis major (upper to 60°)•Anterior Deltoid•List the muscles that do extension of the shoulder•Latissimus dorsi•Teres major•Posterior deltoid•Pectoralis major (lower fibers to neutral)Practice•List the muscles that do adductionadduction of the shoulder•Pectoralis major (lower and upper below 90°)•Coracobrachialis•Latissimus dorsi•Teres majorList the muscles that do abductionabduction of the shoulder•Deltoid (all sections)•Supraspinatus•Pectoralis major (upper past 90°)Practice•List the muscles that do internal rotation of the shoulder•Subscapularis•Latissimus dorsi•Teres major•Anterior deltoid•Pect. major•List the muscles that do external rotation of the shoulder•Infraspinatus•Teres minor•Posterior deltoidName the muscle.CoracobrachialisName the actionAdduction of the shoulderAlso, flexion and hor. add.Name the muscle.Pectoralis MajorName the muscle.SubscapularisName the actionInternal rotation of the shoulderName the muscle.DeltoidName the actionAbduction of shoulderName the muscle.InfraspinatusName the actionExternal rotationName the muscle.Teres MajorName the actionAdduction of scapulaName the muscle.Teres MinorName the action if the humerus move directly to the posteriorExtension of the shoulderName the muscle.SupraspinatusName the actionAbduction of the shoulderCoracobrachialis Pect. MajorSubscapularisDeltoidSupraspinatus Teres MajorInfraspinatusTeres MinorWhat position are her shoulders in?FlexionWhat position is his right shoulder in?Horizontal Abduction andExternal RotationWhat rotation action is his shoulder performing as he continues to through the ball?Internal RotationWhat position are her shoulders in?FlexionWhat position are his shoulders in?Horizontal abduction or Extension1.2.FlexionExtensionPosition of their shoulders?What is the position of shoulders?ExtensionShoulder Muscle ExercisesMajor Muscles of the Shoulder•Pectoralis major–Push-ups–Pull-ups–Bench press–Throwing–Tennis serve•Latissimus dorsi–Chinning–Robe climb–Dips on parallel bars–Pullover exercises–Pulldown exercises–RowingShoulder action = ?Shoulder muscle(s) = ?AbductionDeltoidSupraspinatusShoulder action = ?Shoulder muscle(s) = ?FlexionAnt DeltoidUpper Pect MajorCoracobrach.Shoulder action = ?Shoulder muscle(s) = ?Horizontal Add.Ant. DeltoidPect. Major (both)CoracobrachialisShoulder action = ?Shoulder muscle(s) = ?Horizontal AbductionLatissimus DorsiPost. DeltoidTeres MinorInfraspinatusShoulder action = ?Shoulder muscle(s) = ?AdductionPect. Major (both)CoracobrachialisLatissimus DorsiTeres MajorShoulder action = ?Shoulder muscle(s) = ?Horizontal AddAnt. DeltoidPect. Major (both)CoracobrachialisShoulder action = ?Shoulder muscle(s) = ?ExtensionLats Teres MajorPost. Deltoid Pectoralis Major (lower)Infraspinatus Teres minorShoulder action = ?Shoulder muscle(s) = ?External RotationInfrspinatusTeres MinorPost. DeltoidName a shoulder muscle isolated with the following exercises.•Side arm dumbbell raises•Deltoid•Push-ups •Pectoralis major•Rowing and pull-overs•Latissimus dorsiWhat is the action to the left? What muscles perform that action?Internal RotationExternal RotationInternal RotationSubscapularis, Ant. Deltoid, Pect, Major, Lats. And Teres MajorRotator Cuff ExercisesExternal RotationExternal RotationInternal RotationAbduction (to work the supraspinatus)Shoulder Related Injuries•The shoulder is built for motion, not stability•Injury rate depends on…–Shallowness of glenoid fossa–Laxity of ligaments–Strength of muscles•Shoulder subluxation–Incomplete or partial dislocation•Shoulder dislocation–Complete dislocation of the GH joint–Most common anteriorly and inferiorly•Shoulder separation–Complete dislocation of the AC jointShoulder DislocationImpingement SyndromeImpingement Syndrome•A condition that decreases the subacromial space–Acromion process–Coracoacromial ligament•Causes–Swelling–Bone spurs–Anatomical structureImpingement SyndromeRotator Cuff TearsRotator cuff•Subscapularis•Supraspinatus•Infraspinatus•Teres minorMovement of RC Muscles•Subscapularis is an internal rotator of the arm. •Supraspinatus assists the deltoid in abducting the arm, with its greatest contribution being the initiation of abduction. •Infraspinatus and teres minor muscles both externally rotate the arm.Rotator Cuff Injury•The throwing motion has been divided into five phases: wind-up, cocking, acceleration, and follow-through. •Cocking phase–Subscapularis fires in late cocking phase to decelerate the shoulder's external rotation. Also, it is stretched during the cocking phase.Rotator Cuff Injury•Follow-through (muscles fire most intensely)–Subscapularis internally rotates the shoulder, –The infraspinatus and teres minor contract eccentrically to decelerate the arm and are stretched.•During this repetitive eccentric loading, the rotator cuff is prone to overload, fatigue, tendinitis, and even a partial undersurface tear.Note: Surgery needs


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