chapter 22: the shoulder complex jennifer doherty-restrepo, ms, lat, atc academic program director,...
TRANSCRIPT
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Chapter 22: The Shoulder Complex
Jennifer Doherty-Restrepo, MS, LAT, ATC
Academic Program Director, Entry-Level ATEP
Florida International University
Acute Care and Injury Prevention
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The shoulder is an extremely complicated region of the body
Joint with a high degree of mobility, but, not without compromising stability
Involved in a variety of overhead activities relative to sport
Susceptible to a number of repetitive and overused type injuries
Introduction
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Functional Anatomy Great mobility, limited stability
Round humeral head articulates with flat glenoid Rotator cuff and long head of the biceps provide dynamic
stability during overhead motion Supraspinatus compresses the humeral head Other rotator cuff muscles depress the humeral head Integration
of the capsule and rotator cuff
Scapula stabilizing muscles also provide dynamic stability Relationship with the other joints of the shoulder complex and
the G-H joint is critical
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Prevention of Shoulder Injuries Proper physical conditioning is key Sport-specific conditioning Strengthen through a full ROM Warm-up should be used before explosive arm
movements are attempted Contact and collision sport athletes should receive
proper instruction on falling Protective equipment Proper mechanics
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Specific Injuries Clavicular Fractures
Etiology MOI = fall on outstretched arm, fall on tip of shoulder, or
direct impact Occurs primarily in middle third
Signs and Symptoms Athlete supports arm, head tilted towards injured side with
chin turned away Clavicle may appear lower Palpation reveals pain, swelling, deformity, and point
tenderness
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Clavicular Fractures (continued) Management
Closed reduction - sling and swathe immediately Refer for X-ray Immobilize with brace for 6-8 weeks After removal of brace, rehabilitation includes:
Joint mobilizations Isometric exercises Use of a sling for 3-4 weeks
May require surgical treatment
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Scapular Fractures Etiology
MOI = direct impact or force transmitted up through humerus
Signs and Symptoms Pain during shoulder movement Swelling and point tenderness
Management Sling immediately and refer for X-ray Use sling for 3 weeks then begin PRE exercises
Specific Injuries
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Fractures of the Humerus Etiology
MOI = direct impact, force transmitted up through humerus, or fall on outstretched arm
Proximal fractures occur due to direct blow Dislocations occur due to fall on outstretched arm Epiphyseal fractures are more common in young
athletes and occur due to direct blow or indirect blow traveling along long axis of humerus
Specific Injuries
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Fractures of the Humerus (continued) Signs and Symptoms
Pain, swelling, point tenderness, decreased ROM Management
Immediate application of splint Refer for X-ray Treat for shock
Specific Injuries
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Acromioclavicular Sprain Etiology
MOI = direct blow (from any direction) or upward force from the humerus
Graded from 1 - 6 according to severity of injury
Signs and Symptoms Grade 1 - point tenderness, pain with movement
No disruption of AC joint
Grade 2 - tear or rupture of AC ligament, pain, point tenderness, and decreased ROM (abd/add) Partial displacement of lateral end of clavicle
Specific Injuries
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Acromioclavicular Sprain (continued) Signs and Symptoms
Grade 3 - rupture of AC and CC ligaments AC joint separation
Grade 4 - posterior dislocation of clavicle Grade 5 – rupture of AC and CC ligaments, tearing of
deltoid and trapezius attachments, gross deformity, severe pain, decreased ROM
Grade 6 - displacement of clavicle behind the coracobrachialis
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Acromioclavicular Sprain (continued) Management
Ice, sling and swathe Referral to physician Grades 1 – 3: non-operative treatment
1 - 2 weeks of immobilization Grades 4 – 6: surgery required Aggressive rehab is required for all AC sprains
Joint mobilizations, flexibility exercises, and PRE exercises should occur immediately
Progress as tolerated – no pain and no additional swelling Padding and protection may be required until pain-free ROM
returns
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A: Grade 1 B: Grade 2 C: Grade 3 D: Grade 4 E: Grade 5 F: Grade 6
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Glenohumeral Joint Sprain Etiology
MOI = forced abduction and/or external rotation; or a direct blow
Signs and Symptoms Pain during movement
Especially when re-creating the MOI Decreased ROM Point tenderness
Specific Injuries
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Glenohumeral Joint Sprain (continued) Management
RICE for 24-48 hours Sling After hemorrhaging subsides, modalities may be
utilized along with PROM and AROM exercises to regain full ROM
When full ROM achieved without pain, PRE exercises can be initiated
Must be aware of potential development of chronic conditions (instability)
Specific Injuries
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Acute Subluxations and Dislocations Etiology
Subluxation = excessive translation of humeral head without complete separation from joint
Anterior dislocation = results from an anterior force on the shoulder with forced ABD and ER
Posterior dislocation = results from forced ADD and IR, or, falling on an extended and internally rotated shoulder
Specific Injuries
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Acute Subluxations and Dislocations (continued) Signs and Symptoms
Anterior dislocation - flattened deltoid; prominent humeral head in axilla; arm carried in slight ABD and ER rotation; moderate pain and disability
Posterior dislocation - severe pain and disability; arm carried in ADD and IR; prominent acromion and coracoid process; limited ER and elevation
Specific Injuries
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Acute Subluxations and Dislocations (continued) Management
Sling and swathe and refer for reduction Immobilize for 3 weeks following reduction Perform isometrics while in sling After immobilization period, begin PRE exercises as
pain allows Protective bracing when return to play
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Shoulder Impingement Syndrome Etiology
Mechanical compression of supraspinatus tendon, subacromial bursa, and long head of biceps tendon due to decreased space under coracoacromial arch
MOI = overhead repetitive activities Exacerbating factors
Laxity and inflammation Postural mal-alignments
Kyphosis and/or rounded shoulders
Specific Injuries
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Shoulder Impingement Syndrome (continued) Signs and Symptoms
Diffuse pain Increased pain with palpation of subacromial space Decreased strength of external rotators compared to
internal rotators Tightness in posterior and inferior capsule Positive impingement and empty can tests
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Rotator cuff tear Etiology
Occurs near insertion on greater tuberosity Involve supraspinatus or rupture of other rotator cuff
tendons Partial or complete thickness tear
Full thickness tears usually occur in athletes with a long history of rotator cuff pathology
Generally does not occur in athlete under age 40 MOI = acute trauma or impingement
Signs and Symptoms Pain and weakness with shoulder ABD and IR Point tenderness
Specific Injuries
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Rotator cuff tear (continued) Management
NSAID’s and analgesics Modalities
Electrical stimulation for pain Ultrasound for inflammation
Restore appropriate mechanics by strengthening rotator cuff to depress and compress humeral head to restore subacromial space
Severe cases may require rest, immobilization, and surgery
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Thoracic Outlet Compression Etiology
Compression of brachial plexus, subclavian artery and vein
Due to 1) decreased space between clavicle and first rib, 2) scalene compression, 3) compression by pectoralis minor, or 4) presence of cervical rib
Specific Injuries
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Thoracic Outlet Compression (continued) Signs and Symptoms
Paresthesia, pain, sensation of cold, impaired circulation, muscle weakness, muscle atrophy, and radial nerve palsy
Positive anterior scalene test, costoclavicular test, and hyperabduction test
Management Conservative treatment - correct anatomical condition
through stretching (pec minor and scalenes) and strengthening (trapezius, rhomboids, serratus anterior, erector spinae)
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Specific Injuries Biceps Brachii Rupture
Etiology Generally occurs near origin of muscle at bicipital groove MOI = powerful contraction
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Biceps Brachii Rupture (continued) Signs and Symptoms
Audible snap with sudden and intense pain Protruding bulge may appear near middle of biceps Weakness with elbow flexion and supination
Management Ice for hemorrhaging Immobilize with a sling and refer to physician Athletes will require surgery
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Bicipital Tenosynovitis Etiology
Ballistic activity involves repeated stretching of biceps tendon causing irritation to the tendon and sheath
MOI = repetitive overhead activities
Signs and Symptoms Point tenderness over bicipital groove Swelling, crepitus due to inflammation Pain when performing overhead activities
Specific Injuries
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Bicipital Tenosynovitis (continued) Management
Rest, ice, and ultrasound to treat inflammation NSAID’s Gradual program of strengthening and stretching
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Contusion of Upper Arm Etiology
MOI = Direct blow
Signs and Symptoms Transitory paralysis and decreased ROM
Management RICE for at least 24 hours Provide protection to prevent repeated episodes that could
cause myositis ossificans Maintain ROM
Specific Injuries
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Rehabilitation of the Shoulder Immobilization
Will vary depending on injury Time in brace or splint are injury specific Isometrics can be performed ROM and strengthening are dictated by healing
General Body Conditioning Maintain cardiovascular endurance through
cycling, running, and walking