fractures and dislocations shoulder and humerus · fractures and dislocations dr. rizwan khan dept...
TRANSCRIPT
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Shoulder and HumerusFractures and Dislocations
Dr. Rizwan KhanDept Of Orthopaedics
HIMSR and HAH Centenary Hospital
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Overview
• Common shoulder and humerus injuries seen in the ED
• For each injury– Mechanism– Physical exam– Diagnostic imaging– Classification– Management– Watch out!
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Mechanism of Injury
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Injuries to be Covered
• AC separation
• Clavicle fracture
• Scapula fracture
• Shoulder dislocation
• Humeral Fractures– proximal
– mid shaft
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Shoulder Anatomy
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How bad is it doc??
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AC Separation
• Mechanism– Downward force on tip of shoulder
– AC and Costoclavicular ligaments disrupted
• Watch for associated # of clavicle, coracoid process
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Normal AC joint
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AC classification – Clinically
• Grade I
– Mild tenderness over AC joint, mild swelling
– Full ROM
• Grade II
– Mod/severe pain, clavicle slightly displaced up
• Grade III
– Arm kept in adduction, obvious deformity
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AC Classification
Grade IMechanism
Grade II Grade III
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AC Imaging
• AP shoulder (cephalic tilt)– Normal CC distance 1.1-1.3cm (injury if > 5mm on
comparison)
• Axillary lat view• ?Stress views - 10-15lbs tied to wrists• Watch for os acromiale– Secondary ossification centre on distal acromion
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AC Separation
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Management
• I and II– Conservative (sling, ice, analgesia, physio)– 6/52 before lifting
• III– Conservative with late distal clavicle excision– Refer to Ortho <72h
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Ouch!
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Clavicle Fractures
• Function– “strut”, only bony connection to axial skeleton
• Mechanism– direct blow > FOOSH
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Clavicle - Physical Exam
• Gross deformity
• Palpation
• potential injury to medial cord (Ulnar N dysfunction)
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Clavicle fracture
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Clavicle Imaging
• AP
• 30 degree cephalad view
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Is it Broke?
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Classification
• Proximal/middle/distal third
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Clavicle # - Middle third
• 80% of fractures
• medial portion - displaced up by sternocleidomastoid
• lateral portion - displaced down by weight
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Clavicle # - Middle thirdManagement
• Management
– figure of eight vs sling (J Acta Ortho Scand 58 (1):71-4, 1987)
– 2-4 wks kids, 4-8 wks adults
– Kids: possible greenstick – immobilize and recheck in 7-10d
• Indication for OR (increases risk of non union) - cosmesis, tenting, open, vascular injury
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Clavicle FractureSling and Swathe
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Clavicle FractureVelpeau
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Clavicle # - Distal Third
• 10-15%• Classification– I: minimal displacement– II: torn CC ligament, prone to non-union– III: articular surface (may mistake for 1st AC)
• Management– conservative (J. Acta. Ortho. Scand. 64 (1):87-91,
1993– ?OR for II (BJAS 23(1): 44-6, 1992.
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Distal third #
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Clavicle # - complications
• Injury to brachial plexus, great vessels, lungs
• watch out for floating shoulder– if associated with scapular surgical neck #
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Scapular Fractures
• Rare, high energy
• Males ~30 y.o.
• Associated with other injuries (lung, rib, clavicle)
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Scapular #Clinically
• If awake, arm adducted
• Tender, crepitus, hematoma
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Scapular #Classification
• Type I
– Body and spine
• Type II
– Acromion or coracoid process
• Type III
– Scapular neck or glenoid fossa
Type IType III
Type II
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Scapular Fracture
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Scapular # -Management
• Conservative
• OR– Displaced acromial # impinging on joint
– Associated coracoid # if CC ligament disrupted
– Scapular neck/glenoid fossa #
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Shoulder Dislocation
• Men 20-30, women 60-80 yo
• kids more prone to # through growth plate (joint capsule and ligaments 2-5x stronger than epiphyseal plate)
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Shoulder Dislocation - Classification
• Anterior (95-97%)– Subcoracoid (most common)
– subglenoid (1/3 associated with # greater tuberosity, or # glenoid rim)
– subclavicular
• Posterior
• Inferior and superior
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Shoulder DislocationAnterior dislocations
• Traumatic/nontraumatic
• Primary/recurrent
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Shoulder DislocationAnterior
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Shoulder DislocationAnterior
• Clinically– Slight abduction, ext rotation
– Squared off, loss of coracoid process
• Mechanism– abduction+extension+posterior force
– shoulder capsule torn
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Shoulder DislocationAnterior: Exam
• Check brachial plexus, Axillary N
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Shoulder Dislocation - Imaging
• Do you want films?– Recurrent dislocation vs primary, ?nontraumatic– Avulsion # of greater tuberosity in 10-15%
• True AP• Axillary view• trans-scapular view• Stryker Notch: • West point Axillary• Apical oblique view
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Anterior dislocation
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Shoulder dislocation - Management
• Anesthesia - conscious sedation vs intra-articular lidocaine
• Reduction (“know three methods well”)– External rotation
– Scapular rotation
– Stimson’s
– Milch
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Shoulder Dislocation Reductions
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Shoulder Dislocation Reductions
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Shoulder dislocation - Management
• Check NV post reduction
• ? Repeat films (advised by Rosen)
• Sling and swathe, Velpeau
• Uncomplicated: sling x 3-4/52 if < 20 y.o., 1-2/52 if > 40 y.o. (early mobilization!)
• Complications: NV injury, rotator cuff tear, etc. f/u with ortho
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Shoulder Dislocation - Complications
• Bankart lesion– primary lesion in recurrent ant instability
• Hill Sach lesion– 35-40% of ant dislocations, predisposes to
recurrent injury• recurrent dislocation– young adults redislocation in 55-95%– skeletally mature, < 30yo: ? Early arthroscopic
reconstruction (Arthroscopy 15(5) 1999: 507-12)
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Shoulder DislocationPosterior
• 2-4% of shoulder dislocations
• Secondary to seizure, direct blow to shoulder
• Need to dx early to prevent long term complications
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Shoulder DislocationPosterior: clinical features
• Arm held across chest
• Adducted
• Internally rotated
• Flat and squared off
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Shoulder DislocationPosterior: Imaging
• AP may appear normal!
• Loss of half moon elliptical overlap of humeral head and glenoid fossa
• “Rim sign” – increased distance between ant glenoid rim and articular surface of humeral head
• “light bulb” – int rotation of humeral head
• “trough sign” Reverse Hill Sachs (anteromedial impaction)
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Shoulder DislocationPosterior: Imaging
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Shoulder DislocationPosterior: Management
• Conscious sedation and closed reduction
• Axial traction, pressure on humeral head, external rotation
• Complications:– Missed Dx: “locked” – ORIF
– # glenoid rim, tuberosities, humeral head
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Shoulder DislocationInferior (Luxatio Erecta)
• Rare
• Arm locked overhead 110-160 deg abduction, hand resting on head
• AP radiograph: spine parallel to humerus
• Reduce with traction
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Shoulder DislocationInferior (Luxatio Erecta)
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Humerus Fractures
• Proximal
• Mid shaft
• Supra condylar
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Proximal Humerus Fractures
• Primarily older population
• FOOSH, arm pronated limits abduction
• Older pts #, while younger pts dislocate
• Both if middle aged
• Arm held close to body, mov’t limited by pain
• Tender, hematoma, bruising
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Proximal Humerus Fractures
• 85% minimally displaced – conservative rx
• Separation along old epiphyseal lines
– Articular surface (anatomic neck)
– Greater and lesser tuberosity
– Humeral shaft (surgical neck)
• Considered displaced if:
– > 1cm away
– > 45 degrees
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Proximal Humeral FracturesNeer’s Classification
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Proximal Humeral Fractures
• Minimal displaced 3 part #
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Proximal Humerus FracturesManagement
• Minimally displaced– # held together by capsule, periosteum, muscles– Analgesia, sling and swathe x 3-4/52
• 2,3,4 part – consult ortho• Fracture/dislocation – caution with force,
don’t want to displace segments• Complications: adhesive capsulitis
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Proximal Humeral Epiphysis
• Rare
• Usually Males 11-17
• FOOSH
• # through zone of hypertrophy of epiphyseal plate
• Arm held close to body, swelling
• Classification: Salter Harris
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Proximal Humeral Epiphysis
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Proximal Humeral EpiphysisManagement
• Potential for growth disturbance
• <6 yo : usually Salter I, analgesia, sling and swathe
• > 6 yo: usually Salter II– If > 20 deg need to reduce
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Midshaft Humerus Fractures
• Mechanism
• Direct blow, severe twisting, FOOSH
• Obvious deformity, crepitus
• Shortened limb, rotated
• Assess radial nerve
• Exam shoulder and elbow
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Midshaft Humerus Fractures
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Midshaft Humerus Fractures
• Management– Hanging arm cast (displaced) / Sugar tong
(nondisplaced)– F/U with ortho in 24-48h– overriding #: accept up to 1 inch shortening
• ORIF– unacceptable alignment, radial nerve
involvement, segmental #, other upper extremity injuries, pathological #, limited to bedrest
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Midshaft Humerus Fractures
1 in prox to #
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Midshaft Humerus Fractures
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Midshaft Humerus FracturesChildren
• Radial nerve injury is rare
• accept 1-1.5cm shortening, 15-20 deg angulation
• 4-6 wks in modified Velpeau or sling and swathe (compliance difficult for hanging cast)
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Supracondylar Fracture
• Usually < 8yo
• Extension (95%) vs flexion
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Supracondylar Fracture-Mechanism
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Supracondylar Fracture-clinically
• Mild swelling to gross deformity
• arm held to side, immobile, extension
• S-shaped configuration
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Supracondylar Fracture-Classification
• Gartland
• I - nondisplaced
• II - displaced with intact posterior cortex
• III - displaced fracture, no intact cortex– A: postermedial rotation of distal fragment
– B: posterolateral rotation
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Supracondylar Fracture-Management
• If NV compromise - urgent ortho consult
• if no response in 60 min may attempt 1 reduction
• watch brachial artery and median nerve
• Gartland I - splint and ortho f/u 24h
• Gartland II - controversy but most get pinned
• Gartland III - closed reduction and pin
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Supracondylar Fracture-Reduction
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Spot the #
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Spot the #