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84 Cards in this Set
- Front
- Back
list blood loss volumes for the 4 classes of shock
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I: <750
II: 750-1500 III: 1500-2000 IV: >2000ml |
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scoring for the motor part of GCS
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I: no movement
II: extensor posturing III: flexor posturing IV: withdraws to pain V: localizes to pain VI: perposeful movement |
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Canadian CT head rule
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GCS <15 2h after injury
suspected open or depressed skull fracture any sign of basal skull fracture vomiting >= 2 episodes age >65 preimpact amnesia >30 min dangerous mechanism (ped vs mvc, ejection, fall >3ft) |
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Canadian CT neck rule
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1. None of :
age >65 parasthesias mechanism (>3ft/5stair, axial load, >100km/h, roll over/ejection, ATV) 2. plus one of the following: ambulatory at any time, delayed onset of pain, simple rearend MVC 3. then check neck rotation |
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type of fracture and mechanism
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Jefferson Fracture (burst of C1) from an axial load
note the overhanging edges of C1 on C2 |
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name and mechanism
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Bilateral facet dislocation
flexion injury see greater than 50% anterior dislocation of vertebrae Unstable injuruy |
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types of odontoid fractures
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I: stable
II: unstable III: unstable |
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name and mechanism
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Hangman fracture
C2 bilateral pars interarticularis fractures caused by hyperextension |
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name and mechanism
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Extension or Flexion teardrop fracture
Unstable |
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name and mechanism
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flexion-distraction (Chance fracture)
Horizontal fracture though middle and posterior columns most commonly from flexion in MVC wearing lap belt |
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Anterior Cord Syndrome
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Mechanism: Flexion of cervical v. or direct anterior cord injury
Findings: paralysis, loss of pain and temp, preserved proprioception and vibration |
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name and function of each tract
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green- dorsal column: proprioception, vibration,
red- lateral corticospinal tract: motor function blue- spinothalamic tract: pain, temperature, touch |
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Central Cord Syndrome
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Mechanism: typically elderly hyperextension injury
Findings: Motor impairement in upper>lower limbs, and also variable touch, temperature, bladder dysfunction |
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Brown-SeQuard Syndrome
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Hemisection of cord
Findings: Ipsilateral loss of motor, vibration, sensation and contralateral loss of pain and temp |
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Chest tube output requiring thoracotomy
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>1500ml immediately or >200ml/h x 2 hr
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Beck's Triad
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1. Muffled heart sounds
2. JVD 3. Hypotension |
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ED thoracotomy indications
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1. Arrest within 15min of presentation after penetrating chest trauma
2. SBP <50 after fluids with pen chest trauma 3. |
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P/E for posterior hip dislocation
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shortened, internally rotated, and adducted
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Young and Burgess Pelvic fractures
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1. Lateral compression: fracture rami and/or iliac wings
2. Ant/Post compression: opens pubic symphysis and if opens SI joints called "open book" 3. Vertical Shear: fall from height causes shear of SI joint |
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Penile fracture
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fracture of corpus cavernosum
Tx: surgical evacuation and repair tunica albugin |
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Neck zones
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I: clavicles to cricoid
II: cricoid to angle of mandible III: angle of mandible to base of skull |
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Penetrating neck trauma: hard and soft signs
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Hard: expanding hematoma, pulsatile bleeding, air bubbling from wound, hematemesis, bruit, stridor, decreased/absent radial pulse
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compartments of the lower leg
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Anterior
Superficial Posterior Deep Posterior Lateral |
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Findings of compartment syndrome
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Pressure (tense compartment)
Pallor Pulselesness (late) Pain out of proportion Pain with passive stretch parasthesias |
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Normal compartment pressures:
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Normal 0-10mm Hg
>20 mm Hg is abnormal |
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Urine findings of rhabdomyolysis
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blood on dip and minimal/no RBCs on analysis
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Parkland Formula
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4ml x %BSA x Wt in kg = fluids over 24hrs
(only count 2nd and 3rd degree) give half in first 8hrs |
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degrees of burns
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1st: epidermis, red, no blisters
2nd superficial: partial dermis, blistering, red, painful, blanching 2nd deep: partial dermis, blistering, non-blanching, red to pail white, painful 3rd: full dermis, charred, black or white, non painful, leathery, impaired touch sensation 4th: into subcutaneous, bone, muscle |
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Acid burns
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Coagulative necrosis: causes an eschar barrier so burns less deep
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Alkali burns
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Liquefactive necrosis: no barrier formed and burns can be deeper than acids
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Elbow imaging lines?
Radiocapitellar line |
Anterior humeral line: should pass thought middle 1/3 of capittellum
Line from radius intersects middle 1/3 of capitellum |
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Monteggia fracture
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Ulnar shaft fracture with radial head dislocation
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Galeazzi fracture
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radial shaft fracture with disruption of DRUJ
*unstable and requires ORIF |
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injury and x ray finding
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scapholunate dissociation
Terry Thomas sign (widening of scaphoid-lunate space) |
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injury and xray finding?
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Lunate dislocation
spilled tea cup sign |
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Injury and x ray findings?
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Perilunate dislocation
Lunate properly aligned with radius but capitate not aligned with lunate |
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Ulnar collateral ligament injury. Findings?
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From valgus stress to 1st phalanx
Tender over proximal 1st phalanx laxity of 1st phalanx to valgus stress |
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acceptable volar angulation of metacarpal neck fractures
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5th: <40 degrees
4th: <30 degrees 2nd and 3rd: <10 degrees (2nd and 3rd are less mobile) |
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Flexor digitorum profundus avulsion injury findings and treatment?
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unable to flex DIP with PIP and MCP held in extension.
Requires splinting and ortho referral for surgery |
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Extensor tendon rupture findings and treatment
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unable to extend DIP
6 weeks of splint in extension |
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Neer Classification
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Proximal humerus fractures
4 parts: greater tubercle, humeral head, lesser tubercle, shaft count part: separation by 1cm or angulation of >45 degrees |
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Ottawa Knee rules
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X ray if any of the following:
1. Unable to bear weight x 4 steps 2. Tender only over patella 3. tender over fibular head 4. age >55 5. Inability to flex to 90 degrees |
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Inury?
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high riding patella indicates patellar tendon rupture.
See suprapatellar gap and low riding patella with quadriceps rupture |
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Lachman's test?
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Tests ACL
anterior forse with knee in 30 degrees flexion more sensitive than anterior drawer |
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injury to knee from rapid deceleration and pivoting (ie. soccer)
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ACL
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Ottawa Ankle rules
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X ray if malleolar pain and any of:
1. Pain at base of 5th MT 2. Pain over navicular 3. Inability to wt br 4 steps at injury and in ED 4. Pain to posterior 6cm or tip of either malleoli |
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Maissoneuve fracture? and Tx?
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Eversion injury
Medial malleolus # or deltoid disruption with disruption of syndesmosis and proximal fibula # ORIF |
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Normal Bohler's angle?
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<20 degrees
if less consider calcaneus fracture |
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Lisfranc injury
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Disruption of ligament between 1st cuneiform and 2nd metatarsal.
Look for gap between 1st and 2nd or 2nd and 3rd metatarsal or X ray. Requires ORIF. |
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Most common pathogen in osteomyelitis?
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Staph aureus
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Microscopic findings of gout? crystals made of? Treatment?
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Needle shaped negatively birefringent crystals.
Uric Acid Treat with NSAIDs +/- colchicine |
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Pseudogout findings on microscopy? Crystals made of?
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rhomboid shaped positively birefringent crystals.
Calcium pyrophosphate |
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Synovial fluid findings in septic joint?
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WBC> 50 000
>90% neutrophils gram stain + in only about 50% |
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causes of septic joint?
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Staph aureus most common.
Consider N. Gonnorrhea in sexually active |
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tests for carpal tunnel
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Phalen's test: symptoms with hyperflexion of wrists for 90 seconds
Tinnel's sign: median nerve parasthesias with tapping tunnel |
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De Quervan's Tenosynovitis pathology, testing, Tx?
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Synovitis of abductor pollicis longus and the extensor pollicis brevis.
Finklesteins test: pain at radial styloid with passive ulnar deviation wrist with hand in fist and thumb inside RICE, NSAIDS, +/- steroid injection |
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Flexor Tenosynovitis findings?
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Flexed posture of digit
Pain with passive extension diffuse swelling pain with palpation of flexor sheath |
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Supracondylar humeral # classification
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Gartland classification
I: anterior cortex broken but no angulation/displacement II: anterior cortex broken, angulate posteriorly with posterior cortex intact III: completely displaced (no cortex intact) |
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fracture and treatment
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Tillaux fracture:
A pediatric Salter-Haris type 3 to the anterior lateral aspect of the tibia. Requires ORIF |
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Dequervain's tenosynovitis
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inflammation of extensor tendons of thumb
pain with flexion (finklesteins test) Tx: steroid injection |
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Flexor Tenosynovitis signs?
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swelling of finger
pain with passive extension pain with proximal palpation flexor tendon (palm/wrist) hand held in flexion |
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Spinal stenosis
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caused by narrowing of lumbar canal
pain with sitting wknss, parasthesias Tx: PT +/- surgery |
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Central Cord syndrome
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upper limbr>lower limb wknss
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Anterior cord syndrome?
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Impaired pain and temp
intact vibration, and proprioception |
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Brown Sequered syndrome
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penetrating partial transection of cord
contralateral sensory deficits and ipsilateral motor deficits |
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Tilleau fracture?
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Salter-Harris III of the medial aspect of distal tibia
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jones fracture
Stress fracture of base of 5th cast vs surgery |
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Dancer's fracture
avulsion of base of the 5th during inversion injury Tx: cast |
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Gout
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Uric Acid
negatively birefringent crystals needle like crystals Tx: NSAIDs |
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Pseudogout
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Calcium pyrophosphate
positively birefringent rhomboid crystals Tx: NSAIDS |
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polymyositis
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proximal muscle pain and weakness
if there is a rash- dermatomyositis elevated CK |
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Polymyalgia Rheumatica
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Fever, pain in neck, shoulders, hips
associated with temporal arteritis elevated ESR, CRP Tx: steroids |
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SLE diagnostic test and symptoms
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ANA
malar rash, polyarthralgia, multiple organ dysfunction |
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Sjorgren's syndrome
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dry eyes and dry mouth
progressive destruction of salivary/lacrimary glands |
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NEXUS rule?
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N- neuro findings (parasthesias, wknss)
S- spinal tenderness A- altered LOC I- intoxication D- distracting injury |
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Unstable C-spine fractures and pneumonic?
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Jefferson Bit off a hangman's ***
Jefferson Bilateral facet dislocation Odontoid fractures (type 2 and 3) Atlanto-occipital dislocation Hangmans Teardrop |
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Jefferson
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C1 burst fracture
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Bilateral facet dislocation and mechanism
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has a cervical spondylolisthesis
Mechanism: hyperflexion |
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Hangmans fracture
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hyper-extension injury
bilateral pedicle fractures of C2 |
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Teardrop fracture?
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hyperflexion or extension
anterior inferior corner broken off |
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Chance Fracture
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from lap belt injury
Flexion-distraction injury to lumbar vertebrae transverse fracture through body and splaying of spinous processes |
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Central cord injuries?
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elderly
extension injury arms>legs affected |
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Anterior cord injury?
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flexion injury
motor function impaired pain/temp impaired gross touch, and proprioception ok |
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Brown-Sequard
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Motor and proprioception impaired ipsilateral
Pain/temp impaired contralateral |