Diagnostic Imaging 2 Flashcards
gout
males >40yo overprodution of uric acid
extremelly paiful, red, hot and swollen joints
usually mon-articular with the MC site at the MTP of the bg toe (podagra)
tophi cyrstal may be seen
overhanign margin, juxta-aritcular erosions
CPPD
tin linear calcification parallel to articular cortex within the joint space
called chondrocalcinosis when affecting cartilage
MC seen in knee
labs associated with gout
increased uric acid, +ESR
joint asprition
pharmalology for gout
acute-colchicine, chronic allopurinol
HADD
MC affects shoulder joint
round or oval calcifications near the inerrtion of a bursa or tendon
septic arthritis
patient presents with fever, chills, possibly hisotry of trauma/surgery and a warm, tender, swollenjoint
WBC count
AVN
major causee is trumano labs for AVN
all AVNs are self -resolving but takes 8months-2 years
all AVNs can lead to DJD
special tests: bone scan or MRI
preiser’s
carpal scaphoid AVN
scheuermann’s
vertebral end plate epiphysis AVN
MC 10-16yo, rounding of soulders, increased kyphosis, young patient with back pain
legg calve perthes
femoral epiphysis AVN
Kohler’s
tarsal navicular AVN
keinboch’s
carpal lunate AVN
sever’s
calcaneus AVN
blount’s
medial tibial condyle AVN
freiberg’s
head of 2nd or 3rd metatarsal AVN
osteochondritis dessicans
articular surface of medial femoral condyle AVN
16-25yo athletes, knee locks out on extension
associated with Wilson’s sign
best seen on tunnel view radiograph
panner’s
capitellum AVN
radiographic signs of scheuermann’s disease
slight loss of anterior body height of one or more vertebrae (10-15%
multiple endplate irregularities of 3 or more continuous vertebra
casemanagement for scheuermann’s
thoracolumbar brace, strenthen erectors, stretch pecks
can lead to permanent posutural defomrity and early DJD
radiographic signs of legg calve perthes
fragmentation of femoral head (crescent sign)
flattening of femoral head, increased white density of emoral head (snow capped appearance, increased joint space
lealed LCP: mushroom capped appearance
refer to orthopedist for an A brace
SCFE s/s
boys 10-16, salter harris type I fracture
femoral head slides inferior and medial/femoral neck slides superior and lateral
lines for SCFE
klein’s, shenton’s, skinner’s
congential hip dysplasia
putti’s triad: hypoplastic femoral head, shallow acetabular shelf, femoral head outside of acetabulum
orthopedic tests for congential hip dysplasia
telescoping ,ortolani’s, barlow’s, allis
protrusio acetabuli
axial migraition of femoral head wit unifooorm loss of joint space
bilaterally most often occurs with rheumatoid arthritis
also seen with osteoporosis, osteomalacia, paget’s trauma and idiopathic
obliteration of Kohler’s teardrop
avulsion fracture
protion of bone torn away by muscle or ligament tractional force
comminuted fracture
fracture with mor than 2 fragments
diastasis
displacement or separation of a lslightly movable joint
compound/open fracture:
skin ruptured and bone exposed
greenstick/hickory stick
incomplete fracture in children
impaction fracture:
bone fragments driven into one another
torus/buckling fracture
incompete fracture, one side of cortex is affected
occult fracture
clinically evient but not seen on xray. may become evident a week to 10 days after
stress/fatigue fracture
insufficiency or repetitive stress causing a fracture
bennett’s
fracture of 1st metacarpal
boxer’s
fracture of 2nd or 3rd metacarpal
bar room
fracture of 4th or th metacarpal
scaphoid
MC feactureed carpal bone
nightstick
fracture of proximal ulna
monteggia
fractured ulna with radial head displacemtn
galeazzi
fracture of diatal 1/3 of radius with dislocation of distal radio-ulnar joint
colles
fracture distal radius with posteiror displacement of distal fragment
smith
fracture of distal radius with anteiror displacement of distal fragment
march
stress fracture of 2nd, 3rd, 4th metatarsals
jones
transverse fracture at proxim 5th metatarsal
clayshoveler’s
avulsion fx of spinous process, MC C6-T1 hyperflexion injury
hangman’s
bilateral pedicle fracture of C2 due to hyperextnesion injury
jerrerson
fx through anteriorr and posteiror arches of atlas due to axial compression
dens fx
type 1: avulsion of tip of dens
type II: fracture through base of dens
type III: fracture through body of C2
tear drop
avulsion of anterior inferior aspect of vertebral body from hyperextensiontauam
MC C2
associated with acute anteiror cervical cord syndrome