copyright © 2013 wolters kluwer health | lippincott williams & wilkins shoulder conditions...
TRANSCRIPT
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Copyright © 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins
Shoulder ConditionsShoulder Conditions
Chapter 14
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Shoulder ComplexShoulder Complex
• Extremely mobile; minimal stability
• Joints
– Sternoclavicular joint
– Acromioclavicular joint
– Coracoclavicular joint
– Scapulothoracic joint
– Glenohumeral joint
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Shoulder Complex (cont.)Shoulder Complex (cont.)
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Shoulder Complex (cont.)Shoulder Complex (cont.)
• Sternoclavicular joint– Superior sternum with
the proximal clavicle• Joint capsule and
ligaments• Ball-and-socket joint
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Shoulder Complex (cont.)Shoulder Complex (cont.)
• Acromioclavicular joint (AC)– Acromion process of scapula with distal end of
clavicle– Irregular joint; permits movement in all 3 planes– Capsule; minimal stability ligaments; strong
stabilizers• Superior and inferior AC ligament• Coracoclavicular ligament
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Shoulder Complex (cont.)Shoulder Complex (cont.)• Coracoclavicular joint
– Coracoid process of scapula with the inferior surface of clavicle
• Coracoclavicular ligament
– Minimal movement permitted
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Shoulder Complex (cont.)Shoulder Complex (cont.)
• Scapulothoracic joint– Muscles attached to scapula permit its motion
with the trunk and thorax– Functions of scapular muscles
• Stabilization of shoulder region• Facilitate movement of upper extremity
through appropriate positioning of glenohumeral joint
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Shoulder Complex (cont.)Shoulder Complex (cont.)
• Glenohumeral joint
– Glenoid fossa of scapula with the head of the humerus
– Most ROM of any joint in body, but poor stability
• Head has greater surface area than fossa
• Shallow fossa (glenoid labrum)
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Shoulder Complex (cont.)Shoulder Complex (cont.)
• Glenohumeral joint (cont.)
– Joint capsule and ligaments
• Superior, middle, and inferior glenohumeral ligaments (anterior)
• Coracohumeral ligament (superior)
– Rotator cuff muscles (SITS)
• Tendons form a collagenous cuff around joint
• Tension helps hold the head against the glenoid fossa
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Shoulder MusclesShoulder Muscles
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Shoulder MusclesShoulder Muscles
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BursaBursa
• Subacromial bursa
– Lies in subacromial space
– Cushions rotator cuff muscles from acromion (especially supraspinatus)
– Compressed during overhead arm action
• Subcoracoid; subscapularis
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NervesNerves
• Brachial plexus innervates upper extremity
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Blood VesselsBlood Vessels
• Subclavian; axillary—several branches
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KinematicsKinematics
• Movement in 3 planes
– Sagittal
• Flexion and extension
– Frontal
• Abduction and adduction
– Transverse
• Medial rotation and lateral rotation
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Kinematics (cont.)Kinematics (cont.)• Throwing motion
– Wind-up– Stride– Cocking phase
• From foot contact until maximum shoulder external rotation
– Acceleration phase• From maximum shoulder external
rotation until ball release– Deceleration and follow-through
phase• From ball release until maximum
shoulder internal rotation and balanced position is achieved
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Kinematics (cont.)Kinematics (cont.)
• Scapulohumeral rhythm
– Coordinated movement of the scapula needed to facilitate motion of the humerus
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KineticsKinetics
• Glenohumeral joint sustains much greater loads than other shoulder joints
• Throwing motion critical instances
– Cocking phase
– After ball release
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Prevention of Shoulder ConditionsPrevention of Shoulder Conditions
• Protective equipment
– Shoulder pads
• Physical conditioning
– Flexibility
– Strength
• Proper skill technique
– Throwing motion
– Proper falling technique
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Sternoclavicular (SC) SprainSternoclavicular (SC) Sprain
• MOI– Indirect force through
humerus– Blow to the clavicle
• Displacement: superior and anterior
• S&S– 2: unable to horizontally
adduct; holds arm forward and close to body
– 3: prominent displacement of proximal clavicle
• Management: physician referral; immobilization
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Sternoclavicular (SC) Sprain (cont.)Sternoclavicular (SC) Sprain (cont.)
• Posterior SC sprain– Difficulty swallowing; diminished pulse;
respiratory distress– Management: activate EMS
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Acromioclavicular (AC) SprainAcromioclavicular (AC) Sprain
• MOI– Direct blow– Fall on point of shoulder– Fall on outstretched arm
• Type I: mild stretching of ligaments– Discomfort on abduction >90– Mild point tender over joint line
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Acromioclavicular (AC) Sprain (cont.)Acromioclavicular (AC) Sprain (cont.)
• Type II – rupture of AC ligaments– + displacement; step off deformity– Unable to abduct through ROM; pain with horizontal
adduction– Pain with downward pressure on distal clavicle– Stability: vertical maintained; sagittal plane compromised
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Acromioclavicular (AC) Sprain (cont.)Acromioclavicular (AC) Sprain (cont.)• Type III – rupture of AC ligaments and
coracoclavicular ligament
– Demonstrable instability
– Pain on palpation and depression of acromion process
• Types IV–VI
– Caused by more violent forces
– Extensive mobility due to tear of deltoid and trapezius attachment at distal clavicle
• Management
– Type III: controversial
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Glenohumeral SprainGlenohumeral Sprain• MOI
– Forceful abduction– Forceful abduction and
external rotation • Joint capsule stretches or tears;
humeral head moves in an anterior inferior direction
• S&S– 1: AROM – slight limitation– 2: swelling, ecchymosis,
decreased ROM, especially abduction
• Management – Standard acute care– Pain-free ROM initiated early
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Glenohumeral InstabilityGlenohumeral Instability• Anterior
– MOI• Blow to posterolateral shoulder• Indirect force with shoulder in abduction, external
rotation, and extension– Involves middle and inferior glenohumeral ligament
• Posterior– MOI: posterior forces with humerus in flexion and
internal rotation– More often due to repeated microtrauma
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Glenohumeral Instability (cont.)Glenohumeral Instability (cont.)
• Inferior• Multidirectional instability (MDI)
– Damage in more than one plane– Can significantly alter joint mechanics
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Glenohumeral DislocationGlenohumeral Dislocation• Anterior
– Intense pain; recurrent: less painful
– Tingling and numbness down arm
– Arm held in slight abduction and external rotation; stabilized against body by opposite hand
– Deformity – Individual will not permit
passive horizontal adduction or internal rotation
– Check pulse and sensation– + tests: apprehension,
distraction (sulcus sign), and clunk
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Glenohumeral Dislocation (cont.)Glenohumeral Dislocation (cont.)• Posterior
– Pain radiating to tip of shoulder
– Arm carried tightly against chest and across the front of the trunk (rigid adduction and internal rotation)
– Side view:
• Anterior shoulder appears flat
• Coracoid process becomes prominent
• Possible posterior bulge (or could be hidden in deltoid)
– Attempt to abduct and externally rotate causes severe pain
– Unable to supinate forearm
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Glenohumeral Dislocation (cont.)Glenohumeral Dislocation (cont.)
• Hill-Sachs lesion
– Defect in the articular cartilage of the humeral head
– Caused by the impact of the humeral head on the glenoid fossa as the humerus dislocates
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Glenohumeral Dislocation (cont.)Glenohumeral Dislocation (cont.)• Management
– First-time dislocation – activate EMS
– Immobilize in a comfortable position
– If possible, apply sling
• Chronic dislocations
– Problem of reoccurrence
• Less force needed
• Less spasm, pain, swelling
• Sensation of arm going “dead”
– S&S: pain with crepitation and clicking after reduction; reduction often self-induced
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Glenoid Labrum TearsGlenoid Labrum Tears• Bankart lesion
– Damage to the anterior lip of the glenoid labrum
– Associated with anterior dislocation or degeneration and aging
• SLAP lesion
– Involves superior labrum and disruption of the attachment of the long head of the biceps tendon
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Glenoid Labrum Tears (cont.)Glenoid Labrum Tears (cont.)
• S&S
– Pain, catching, or weakness with arm overhead in abduction and external rotation
– Clicking or popping
– Symptoms reproduced with ROM and translation testing, especially clunk and compression rotation
– + Speed and Yergason's tests
• Management: poor response to conservative treatment; arthroscopic debridement
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Overuse InjuriesOveruse Injuries
• Culprit – repetitive overhead activities
– Joint forces: shear and compression
– Deltoid vs. rotator cuff – force couple action
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Rotator Cuff/ImpingementRotator Cuff/Impingement• Rotator cuff (primarily
supraspinatus)
– Partial tear more likely in young; total tear: adults over age 30
• Impingement syndrome
– Abutment of rotator cuff and subacromial bursa against the coracoacromial ligament and greater tubercle of the humerus
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Rotator Cuff/Impingement (cont.)Rotator Cuff/Impingement (cont.)
• Contributing factors
– Repetitive overhead movement (overuse)
– Limited subacromial space under coracoacromial arch and limited flexibility of coracoacromial ligament
– Supraspinatus and biceps brachii tendon
• Thickness
• Lack of flexibility and strength
– Posterior cuff muscles
• Weakness
• Tightness
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Rotator Cuff/Impingement (cont.)Rotator Cuff/Impingement (cont.)
– Hypermobility of the shoulder joints
– Imbalance in muscle strength, coordination, and endurance of the scapular muscles
– Shape of the acromion
– Training devices (e.g., use of hand paddles, tubing)
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Rotator Cuff/Impingement (cont.)Rotator Cuff/Impingement (cont.)• S&S
– “Deep” pain– Painful arc: between 70° and 120°– Unable to sleep on involved side– Potential + tests:
• Drop arm• Empty can• Neer shoulder impingement• Anterior impingement
• Stages of impingement syndrome• Management: restrict motion
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BursitisBursitis• Subacromial bursa
– S&S
• Sudden shoulder pain: initiation and acceleration phase of throwing
• Point tenderness on anterior and lateral edges of acromion process
• Painful arc during passive abduction
• Pain sleeping on involved side
– Management: physician referral
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Bicipital TendinitisBicipital Tendinitis
• Etiology
– Repetitive overhead activities involving excessive elbow flexion and supination; tendon passes back and forth in groove
– Direct blow
– Subsequent to impingement syndrome
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Bicipital Tendinitis (cont.)Bicipital Tendinitis (cont.)• S&S
– Pain with interior and exterior rotation of shoulder
– Pain with passive stretch in extreme shoulder extension with elbow extended and forearm pronated
– + tests: Yergason’s, Speed’s
• Management: restriction of rotational activities that exacerbate symptoms
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Biceps Tendon RuptureBiceps Tendon Rupture• Etiology
– Prolonged tendinitis makes tendon vulnerable
– Forceful flexion against resistance
• S&S
– Hear and feel a snap
– Intense pain
– Visible palpable defect in muscle belly during flexion; “Popeye” appearance if mass moves distally
– Weakness: flexion and supination of forearm
• Management: immediate physician referral
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Thoracic Outlet Compression SyndromeThoracic Outlet Compression Syndrome• Nerves and/or vessels become
compressed in the proximal neck or axilla
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Thoracic Outlet Compression Syndrome (cont.)Thoracic Outlet Compression Syndrome (cont.)
• Stretch or compression involving lower trunk brachial plexus
• S&S– Aching pain, pins-and-
needles sensation, or numbness in the side or back of the neck extends across the shoulder down the medial arm to the ulnar aspect of the hand
– Weakness in grasp and atrophy of the hand
• Compression of subclavian artery or vein
• S&S– Vein: edema, hand
stiffness, venous engorgement of arm with cyanosis, symptoms may present several hours after exercise
– Artery: rapid onset of coolness, numbness entire arm, fatigue after overhead activity, obliterated radial pulse with Adson’s, Allen, or costoclavicular syndrome tests
neurologic syndrome vascular syndrome
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Thoracic Outlet Compression Syndrome (cont.)Thoracic Outlet Compression Syndrome (cont.)• Blockage of the subclavian vein produces edema,
stiffness (especially in the hand), and venous engorgement of the arm with cyanosis
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Thoracic Outlet Compression Syndrome (cont.)Thoracic Outlet Compression Syndrome (cont.)
• Management: immediate referral to a physician
• Other associated conditions
– Cervical rib syndrome
– Scalenus anterior syndrome
– Hyperabduction syndrome
– Costoclavicular space syndrome
– Poor posture with drooping shoulders
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FracturesFractures• Atraumatic osteolysis of distal clavicle
– Etiology
• Due to repetitive trauma or posttraumatic injury to distal clavicle or AC joint
• Bone resorption causes cystic and erosive changes – remodeling cannot occur due to continued stress
– S&S
• Dull ache over AC joint – progresses to interfere with ADLs
• Point tender distal clavicle
• Pain with horizontal adduction and abduction >90º
– Management: conservative—rest
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Fractures (cont.)Fractures (cont.)• Traumatic clavicular fracture
– MOI: direct or indirect force– S&S
• Proximal fragment – upward; distal shoulder collapses
• Visible and palpable deformity at fracture site
• Pain with any motion– Greenstick fracture– Management
• Immobilize and refer• Typically, fitted with
figure-8 brace
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Fractures (cont.)Fractures (cont.)
• Scapular fracture
– MOI: direct or indirect force
– S&S
• Minimal pain
• Localized pain and hemorrhage
– Need to rule out pulmonary injury
– Management
• Immobilize with sling and swathe
• Refer to physician
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Fractures (cont.)Fractures (cont.)
• Epiphyseal fracture– Little league shoulder –
proximal humerus; due to repetitive medial rotation and adduction
– S&S • Acute shoulder pain with
throwing hard• Pain with deep palpation in
axilla– Management
• Immobilize with sling and swathe
• Immediate referral to physician
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Fractures (cont.)Fractures (cont.)• Avulsion fracture
– Coracoid process due to forceful throwing– Greater and lesser tubercles: associated with dislocation– S&S: pain with deep palpation at site– Management
• Immobilize with sling and swathe• Immediate referral to physician
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Fractures (cont.)Fractures (cont.)• Humeral fracture
– MOI• Direct blow• Fall on upper arm• Fall on outstretched hand
with elbow extended– S&S
• Inability to move arm• Inability to supinate forearm• Possible paralysis
– Management• Immobilize with sling and
swathe• Immediate referral to
physician
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Shoulder AssessmentShoulder Assessment• History
– Important to consider that the shoulder and upper arm are common sites for referred pain
• Observation/inspection– Step deformity – elevated distal clavicle at AC joint– Sprengel’s deformity – undescended scapula
• Palpation
• Physical examination tests
(refer to hand-out)
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Range of MotionRange of Motion
• Active range of motion (AROM)
– Neck
• Flexion, extension, rotation, lateral flexion
– Shoulder
• Scapula
Depression
Elevation
Protraction
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Range of Motion (cont.)Range of Motion (cont.)– Glenohumeral
Retraction Flexion Extension Abduction/
adduction Horizontal
abduction/adduction
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ROM (cont.)ROM (cont.)
• Normal ranges
– Shoulder abduction – 170-180°
– Shoulder flexion – 160-180°
– Shoulder extension – 50-60°
– Lateral or external rotation – 80-90°
– Medial or internal rotation – 60-100°
– Adduction – 50-70°
– Horizontal abduction/adduction – 130°
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ROM (cont.)ROM (cont.)
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ROM (cont.)ROM (cont.)
• Passive ROM
– Determine end feel
• Resisted ROM
– Begin with muscle on stretch
• Apply resistance through entire ROM
• Note any lag, weakness, painful arcs
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ROM (Cont.)ROM (Cont.)
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ROM (Cont.)ROM (Cont.)
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Stress Tests Stress Tests
• Stress tests
– SC instability
– AC instability
• Paxinos Sign
• AC instability test
• Piano key sign
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Stress Tests Stress Tests • Stress tests
– AC instability (cont.)
• AC distraction-compression test
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Stress Tests (cont.)Stress Tests (cont.)
– Glenohumeral instability• Apprehension test for anterior instability
• Relocation test for anterior instability
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Stress Tests (cont.)Stress Tests (cont.)– Glenohumeral instability
• Anterior load and shift
• Posterior load and shift
• Posterior apprehension test
• Sulcus sign
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Special TestsSpecial Tests• Labral Lesions
– Clunk test – Compression rotation test
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Special Tests (cont.)Special Tests (cont.)• Shoulder impingement
– Neer test – Anterior impingement (Hawkins-Kennedy) test
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Special Tests (cont.)Special Tests (cont.)• Muscle tendon pathology
– Serratus anterior test– Pectoralis major contracture test
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Special Tests (cont.)Special Tests (cont.)
• Muscle tendon pathology– Lift-off test –
subscapularis
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Special Tests (cont.)Special Tests (cont.)
• Muscle tendon pathology– Drop arm test
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Special Tests (cont.)Special Tests (cont.)• Muscle tendon pathology
– Empty can test – supraspinatus pathology– Transverse humeral ligament
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Special Tests (cont.)Special Tests (cont.)• Muscle tendon pathology
– Yergason’s test – bicipital tendinitis– Speed’s test – bicipital tendinitis– Ludington’s test – biceps pathology
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Special Tests (cont.)Special Tests (cont.)• Muscle tendon pathology
– Ludington’s test – biceps pathology
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Special Tests (cont.)Special Tests (cont.)• Thoracic outlet syndrome
– Adson’s test (1)
– Allen test (2)
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Special Tests (cont.)Special Tests (cont.)• Thoracic outlet syndrome
– Military brace test (costoclavicular syndrome)
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Neurologic Tests Neurologic Tests
• Neurologic tests– Myotomes
• Scapular elevation (C4) • Shoulder abduction (C5) • Elbow flexion and/or wrist extension (C6) • Elbow extension and/or wrist flexion (C7) • Thumb extension and/or ulnar deviation (C8)• Abduction and/or adduction of the hand intrinsics (T1)
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Neurologic Tests Neurologic Tests
• Neurologic tests– Reflexes
• Biceps (C5-C6) • Triceps (C7)
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Neurologic Tests Neurologic Tests
• Neurologic tests– Cutaneous patterns
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Activity-Specific Functional TestsActivity-Specific Functional Tests
• All functional patterns should be fluid and pain free
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RehabilitationRehabilitation• Restoration of motion
– Codman’s
– T-bar exercises
• Restoration of proprioception and balance
– Closed-chain exercises
• Muscular strength, endurance, and power
– Open-chain exercises
– PNF-resisted exercises
• Cardiovascular fitness
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Rehabilitation (cont.)Rehabilitation (cont.)
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