Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Ortho Imaging 1

Orthopedics

QuestionAnswer
Burst Jefferson fx Radiology: C1 lat masses not line up vertly w/ C2 sup articular facets; distance btw dens & C1 lat masses is asymmetric
Hangmans Fx: alignment: vert body of C2 is normally aligned w/ C1 & dens; post elements of C2 are normally aligned w/ C3
Wrist Radiographs AP, Lateral, Oblique
Wrist Radiographs: clenched fist: to see: Scapholunate dissociation
Wrist Radiographs: Scaphoid Ulnar deviation
Wrist Radiographs: Carpal Tunnel: may see: Hamate, pisiform injuries
Wrist Radiographs: Comparison views to see Growth plate injuries
Wrist Radiographs: Lateral View: Check 2-20 degree palmar tilt of articular surface of radius; dorsal aspect of distal radius is smooth; capitate sits in lunate
Wrist Radiographs: PA View: Check radius lies distal to ulna; radial border of Scaphoid is intact; No more than 2mm of intercarpal joint space; no abnormalities of radius or ulna cortex;
Wrist Radiographs (PA): Impact fx may only show: increased density at radial metaphysis
Wrist Radiographs: beak, bulge or density at fused epiphyseal line is: not a fracture; IS a physeal scar
CTS: Anatomy: 10 structures pass through carpal tunnel (9 tendons, 1 (median) n.)
Scaphoid Fx: Imaging: AP, Lat, oblique, scaphoid views; MRI; Bone scan 72 hrs post injury
Knee Films (views) AP, Lateral; Merchant; Tunnel view (look for OCD)
Knee Films: AP/ Lateral: can show: Tumors; Fx; DJD; Surgeries/ Hardware
Knee Films: Merchant view Patella (Instability; DJD; Chondral lesions)
Knee DJD: Fairbanks Changes Flattened tibial plateau; decreased joint space; osteophytes; subchondral cysts
MRI: excellent for: soft tissue
MRI in ortho: for: ACL ( >95%); Menisc (>85%); chondral lesion (cannot quantify size); MCL,LCL,PLC,PCL; Bone Contusions/ Edema; tumors; fx?
CT: excellent for: fracture characterization
CT: not good for: evaluating soft tissue injuries
Patellar Dislocation: Radiographs: AP/Lat, Merchant view
ACL: dx tests (imaging) MRI to R/O other injuries
HNP: Evaluation: MRI / CT
HNP: MRI/CT: asymptomatic disc herniation found in what percentage? 17-36%
Lumbar Spinal Stenosis: Xray: may show: narrowing of the IVD, old burst fx; MRI demonstrates stenosis
Spondylolisthesis: xray shows: Lateral film shows slip
Osteoarthritis: X-ray shows: joint narrowing, sclerosis, osteophytes
Ankylosing Spondylitis: X-ray shows: Erosion & sclerosis on plain films
LBP: Imaging: when Plain films approp: trauma/ longstanding sx ; if conservative Rx fails
LBP: Imaging: Order: AP / Lateral; Obliques; Flex & Ext
LBP: MRI study of choice for: discopathy
LBP: Tc 99m bone scan for: primary tumors, metastatic disease, or infection
Reading Spine Films: looking for: Fx; Disc space changes; Arthritic changes; Listhesis; Tumors
Spine Film: Frontal View: each vert resembles: an owls head, straight on; each eye = pedicle; beak = spinous process
Spine Films/ Frontal: Horizontal displacement may = fx or dislocation
Spine Films/ Frontal: Decreased intervertebral space = Fx, DDD, HNP
Spine Films/ Frontal: Vert body (owl head) for: Missing eye (destrn); pedicle
Spine Films/ Frontal: Vert body: crack in owls eye: in = Chance fx (seat belt fx)
Spine Films/ Frontal: Vert body: increased space btw owls eyes: in = Burst fx
Shoulder imaging: Standard views: AP and axillary
Imaging: Can get Y view if: suspected dislocation or scapular fx (trauma)
Best imaging for RCT CT arthrogram good, but MRI is better (invasive)
CT is good for: bone abnormality; tumors
MRI for RCT: S&S 95% sensitivity & specificity in detecting RCT
MRI good for: RCT; SLAP lesions (Arthrogram); Soft tissue
Clavicle Imaging AP, 45 degree cephalic tilt
Clavicle Fx: MOA FOOSH, onto shoulder, direct trauma
Nexus criteria for spinal imaging Image spine if: midline C-spine TTP; AMS +/- EtOH; neuro sx/sx; distracting painful injury
Created by: Abarnard