k class 9 muscles of arm 2013

Download K Class 9 Muscles of Arm 2013

Post on 02-Jun-2018

213 views

Category:

Documents

0 download

Embed Size (px)

TRANSCRIPT

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    1/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    2/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    3/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    4/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    5/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    6/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    7/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    8/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    9/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    10/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    11/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    12/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    13/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    14/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    15/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    16/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    17/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    18/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    19/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    20/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    21/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    22/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    23/138

    Often called theswimmers musclebecause of its functionin pulling the body

    forward in the waterduring medial rotation,adduction & extension.It is designed forpowerful movementslike rowing & pulling.

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    24/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    25/138

    O: inferior angle ofthe posteriorscapulaI: bicepital grooveof the humerusEffective only whenthe rhomboidsstabilize thescapula or movethe scapula indownward rotation.

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    26/138

    Teres major works as a synergist withlatissimus dorsi in extending the humerus aswell as adduction & medial rotationThis muscle is less frequently injured thanlatissimus dorsi.Teres major will try to compensate forlatissimus dorsi when latissimus dorsi is

    injured.

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    27/138

    Rotator Cuff Muscles

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    28/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    29/138

    Group works to keep the head of the humerus inits proper location within the glenoid fossaduring all movements.Group must have adequate strength & muscularendurance to ensure proper functioningespecially in repetitive overhead movementssuch throwing, swimming, & pitching.If weak, fatigued or not properly warmed up, candevelop problems such as tendonitis, tendonosis,or rotator cuff impingement Tendonosis is a breakdown of the collagen fibers within

    the tendon Tendonitis is an inflammation of a tendon

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    30/138

    O: subscapularis fossa of the anterior scapulaI: lesser tubercle of the humerus.Main concentric action is medial rotation of thehumerus.Works with latissimus dorsi & teres major & all3 muscles form the posterior axillary fold.Most effective when the rhomboids stabilizethe scapula.It is the least powerful of the 3 muscles due toits close proximity to the joint.

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    31/138

    It is subject to trigger points & painpatterns when there is little or no ROM ofthe scapula.With lack of movement, such as in AdhesiveCapsulitis, the subscapularis becomes weak

    atrophies & adds to the restriction ofnormal ROM.

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    32/138

    O: supraspinatus fossa of the posteriorscapulaI: next to the infraspinatus & teres minor onthe greater tubercle of the humerus.Major concentric action is abduction of theshoulder.In a throwing movement, supraspinatus

    provides an important dynamic stability forthe head of the humerus in the glenoidfossa.

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    33/138

    Most often injured member of the group.Mild to moderate strains or tears oftenoccur with athletic activity with repetitiveoverhead movements such as swimming &throwing.If weak, the athlete tends to use scapulaelevators & upward rotators to obtain

    humeral abduction.

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    34/138

    O: infraspinatus fossa of the posterior scapulaI: greater tubercle of the humerus.The tendon is often tender at its insertion.Concentric actions are extension, adduction

    lateral rotation of shoulderThis muscle, along with teres minor, is mosteffective when the rhomboids stabilize thescapula.

    When the humerus is laterally rotated, therhomboids flatten the scapula to the back &stabilize it so that the humerus can be rotated.

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    35/138

    Synergists include teres minor & the posteriordeltoid.Clients who have difficulty fastening a seatbelt or placing an arm in a sleeve may have aproblem with infraspinatus.Sports injury or other trauma from hauling awheeled suitcase or excessive poling incross-country skiing, could also contribute toinfraspinatus tendonitis or tendonosis.

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    36/138

    O: superior axillary border of the posteriorscapulaI: greater tubercle of the humerusSynergist to as infraspinatus: lateralrotation, adduction, & extensionDoesnt develop problems unless theinfraspinatus is weakened.Can be included in rotator cuff tendonitis ortendonosis due to its close proximity toinfraspinatus.

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    37/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    38/138

    Pectoralis Major is a synergist with Latissimusdorsi in shoulder adduction.Teres major is a synergist with Latissimusdorsi in all its functions.Subscapularis is a synergist with Latissimusdorsi Teres major in medial rotation.Teres minor is a synergist with Infraspinatus

    in all its functions.

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    39/138

    Injuries Overuse Syndrome

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    40/138

    Most commonlydislocated joint inthe body.Once the joint hasbeen dislocated,the stretching ofthe collagen in its

    ligaments makes iteasier to dislocateagain.

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    41/138

    Predisposing factors for dislocation: Small glenoid fossa Anterior tilt of the glenoid fossa Retroversion (turning backwards) of the

    humeral head Weakness in the rotator cuff muscles Genetically weaker joint capsule

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    42/138

    Dislocations orseparations canhappen withwrestlers footballplayers.

    When a rigidlyoutstretched armsustains the full forceof a full-body fall,either the AC jointseparates or there isa fracture of theclavicle.

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    43/138

    A common injury among workers or athletes whoengage in forceful overhead movements thatinvolve abduction or flexion along with medialrotation.

    Caused by progressive pressure on the rotatorcuff tendons by the bone & soft tissues.Symptoms include: hypermobility of the anterior shoulder capsule

    hypomobility of the posterior capsule excessive external rotation limited internal rotation of the humerus lax ligaments of the shoulder joint.

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    44/138

    Can result ininflammation of thetendons or bursaor, in severe cases,rupture of a rotatorcuff tendon.Most commonly

    affected muscle issupraspinatus

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    45/138

    Can cause pain and tenderness in the anterior& superior shoulder regions & sometimesshoulder weakness.Can be caused by: throwing (especially something like a javelin) serving in tennis swimming (especially free style, backstroke &

    butterfly)

    So common among swimmers it is alsoknown as swimmers shoulder.

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    46/138

    Injuries caused by repeated, forceful rotation ofthe shoulder in throwing, serving in tennis &spiking a volleyball.Injuries can include: Tears of the labrum (ring of connective tissue around the

    glenoid fossa), Tears in the rotator cuff muscles Tears in the biceps tendon at its attachment to glenoid

    fossaMost tears happen in the anterior-superioraspect of the labrum & in the supraspinatusmuscle.

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    47/138

    Normal Labral Tear

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    48/138

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    49/138

    Condition thatsometimes occurs withcompetitive volleyballplayers.Is a loss of nervesupply to infraspinatuswith loss of strength inexternal rotation of thehumerus.Associated withrepeated stretching ofthe nerve duringserving.

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    50/138

    A pain response duringa part of an active orpassive jointmovement.In the shoulder, paincan occur when theclient abducts thehumerusPain not felt until thearm is about 90degrees abductedthen the pain subsidesas the arm continuesto move in abduction.

  • 8/10/2019 K Class 9 Muscles of Arm 2013

    51/138

    Cause is the humerus interacting too closelywith the acromion proce