stephen aldridge consultant orthopaedic trauma surgeon rvi
TRANSCRIPT
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Stephen Aldridge
Consultant Orthopaedic Trauma Surgeon
RVI
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Describe the anatomy of the AC Joint
Describe clinical findings in ACJ dislocation
Decide on conservative vs operative treatment
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Synovial joint between medial facet of acromion and the distal clavicle.
Contains intra-articular disk of variable size.
Thin capsule stabilized by ligaments on all sides:
AC ligaments control horizontal (anteroposterior ) displacement
Superior AC ligament most important
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Coracoclavicular ligaments
Two components:
Trapezoid and Conoid
“Suspensory ligaments of the upper extremity”
Provide vertical stability to AC joint
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Moderate or high-energy traumatic impacts to the shoulder
Fall from height
Motor vehicle accident
Sports injury
Blow to the point of the shoulder
Rarely a direct injury to the clavicle
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Type I – III + V
Common
Type IV +VI
Very Uncommon
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Inspection
Evaluate deformity and/or displacement
Beware of rare inferior or posterior displacement of distal or medial ends of clavicle
Compare to opposite side.
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Palpation Evaluate pain
Look for instability with stress
Neurovascular examination
Evaluate upper extremity motor and sensation
Measure shoulder range-of-motion
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Clavicle fracture
Corocoid fracture
QuickTime™ and a
decompressorare needed to see this picture.
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Plain Radiographs
All information needed
Excludes clavicle fracture
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Conservative Majority of patients
Immobilisation in sling for 3-4 weeks
Avoidance of aggravating activities
Heavy lifting, upper limb gym exercises
80% type IIIs asymptomatic
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Surgical Indications
Rare
Grade III:
Cyclists, gymnasts, paddlers
Heavy manual work
Cosmetic (eg Body builders)
Grade IV-VI require surgery
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Acute Direct repair of ligaments and reinforcement with
screw/suture/endobutton/hook plate/synthetic
Late Reconstruct ligaments using Coraco-acromial
ligament (Weaver-Dunn)
Reinforce with screw/suture/endobutton/hook plate/synthetic
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Acute
Direct repair of ligaments and reinforcement with screw/suture/endobutton
Late
Reconstruct ligaments using Coraco-acromial ligament (Weaver-Dunn)
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Acute
Direct repair of ligaments and reinforcement with screw/suture/endobutton
Late
Reconstruct ligaments using Coraco-acromial ligament (Weaver-Dunn)
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QuickTime™ and a decompressor
are needed to see this picture.
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Common injury
Displacement well tolerated
Operative treatment for:
Incarcerated clavicle
Clavicle stripped of muscle attachment
Some Type 3s
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Stephen Aldridge
MA, MD, FRCS, MFSEM
Consultant Orthopaedic Trauma Surgeon
RVI
Scapular Fractures
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1. Understand Incidence and Mechanisms
2. Manage scapular fractures
3. Identify fractures which may need surgery
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1% of all fractures
3% of injuries to shoulder girdle
5% of shoulder fractures
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History typically high energy injury (80-95% incidence other injury)
Mechanism often direct but can be indirect
Diagnosis ultimately radiographic
(Plain film/Pan CT)
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“Scapula trauma series”: AP and Lat of scapula, true glenohumeral axillary view
CT scanning for complex injuries with 3D reconstructions
Stress AP projection if injury to the clavicular-scapular linkage suspected
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>90% scapular fractures minimally displaced
Treatment in sling and swathe with gradual increase of functional use for first 6 weeks
x-rays at 2 week intervals until 6 weeks
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At 6 weeks osseous union usually present and sling/swathe discontinued
Full recovery may take 6 months to 1 year
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1. Significantly displaced (5-10mm) fractures of glenoid cavity (rim and fossa)
2. Significantly displaced (10mm or 40 degrees rotation) fractures of the glenoid neck
3. Double Disruptions of the superior suspensory shoulder complex with displacement of one or more elements
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Glenoid process includes glenoid cavity (rim and fossa) and glenoid neck
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10% of scapula fractures of which no more than 10% are significantly displaced
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Ia= anterior rim fracture
Ib=posterior rim fracture
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Instability anticipated if fracture displaced 10mm and involves one fourth anterior aspect or one third posterior aspect glenoid cavity
Fractures of anterior rim approached anteriorly and posterior rim posteriorly
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Surgery if articular step-off 5-10mm or displacement causes subluxation humeral head out of glenoid cavity
All glenoid fossa fractures approached posteriorly
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25% of scapula fractures of which 10% or less are significantly displaced
Mechanism can be direct blow, fall on outstretched arm, or fall on superior aspect shoulder
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Surgery for type II fractures (10mm or 40 degrees rotation)
Posterior approach between infraspinatus and teres minor
Fixation with 3.5mm recon plate, and possibly k-wires or interfragmentary screws
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Fracture can be at base of coracoid, between CA and CC ligaments, or at tip (avulsion)
Diagnosis often on plain films but CT scan may be needed to better define fracture
Fractures at tip of coracoid typically treated non-operatively (athletes and manual laborers may be exceptions)
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Scapula series detects most acromial fractures
Os acromionale may complicate evaluation
Most are nondisplaced or minimally displaced and treated symptomatically
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SSSC is a bone-soft tissue ring at the end of a superior and inferior bone strut
Ring includes glenoid process, coracoid process, CC ligaments, distal clavicle, AC joint, acromial process
Superior strut is middle third clavicle
Inferior strut is lateral scapular body and spine
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Traumatic disruption 2 or more components SSSC usually secondary to high energy injury and frequently require surgical management
Frequently described as “Floating Shoulder”
Potential long term consequences non-operative treatment include: nonunion, malunion, impingement, altered shoulder mechanics, DJD, neurovascular compromise
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Operative management recommended because of potential instability, displacement of glenoid
Recent series of floating shoulders treated nonoperatively shows good results with conservative care.
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Retrospective review of 20 cases
11 of 20 clavicle fx’s displaced > 10 mm
5 of 20 scapular fx’s displaced > 5 mm
Treated with sling or immobilizer
Evaluated by 3 different shoulder scores, strength compared to uninjured shoulder.
Edwards SG, et al. JBJS 82B: 774-80, 2000
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1 clavicle nonunion (segmental bone loss at injury)
Strength = to opposite arm in all
Constant score 96, Rowe score 95
17-18 patients excellent results depending on evaluation system
Edwards SG, et al. JBJS 82B: 774-80, 2000
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Nonoperative treatment sufficient for many of these injuries.
Each component of the injury should be separately evaluated for indications for surgery, but the combination itself does not mandate operative intervention
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Relatively uncommon injury.
Often high energy
Frequently conservative treatment
Operative treatment: Glenoid rim and fossa
Significantly displaced glenoid neck
? Floating shoulder
Refer to shoulder surgeon