AVN

Question 1

What is the major cause of AVN?

Answer 1

Trauma

Question 2

Are there any labs to diagnose AVN?

Answer 2

NO

Question 3

What is the treatment & time frame for AVN?

Answer 3

All AVN’s are self-resolving, but it takes 8 months to 2 years

Question 4

All AVN’s can lead to ….

Answer 4

DJD

Question 5

What special tests can be done to dx AVN?

Answer 5

Bone Scan or MRI

Question 6

AVN in carpal Scaphoid

Answer 6

Preiser’s

Question 7

AVN in Vertebral End Plate Epiphysis

Answer 7

Scheuermann’s

Question 8

AVN in Femoral Epiphysis

Answer 8

Legg Calve Perthes

Question 9

AVN in tarsal Navicular

Answer 9

Kohler’s

Question 10

AVN in carpal Lunate

Answer 10

Keinboch’s

Question 11

AVN in Calcaneus

Answer 11

Sever’s

Question 12

AVN in Medial Tibial Condyle

Answer 12

Blount’s

Question 13

AVN in Head of 2nd or 3rd Metatarsal (toes)

Answer 13

Freiberg’s

Question 14

AVN in Articular surface of the Medial Femoral Condyle

Answer 14

Osteochondritis Dessicans

Question 15

AVN in Capitellum (hand)

Answer 15

Panner’s

Question 16

Diagnose:

• 16-25 yo +/-
• Athletes
• Knee locks out on extension
• Associated with Wilson’s sign
• Best seen on tunnel view radiograph

Answer 16

Osteochondritis Dessicans

AVN of Medial Femoral Condyle

Question 17

Diagnose:
- MC seen between 10-16 yo +/-
- Case history of rounding shoulders, increased kyphosis, or young patients with back pain
Radiographic Findings:
- Slight loss of Anterior Body height of one or more vertebrae
- Multiple endplate irregularities of 3 or more continuous vertebrae

Answer 17

Scheuermann’s Disease

Question 18

What is the case management for Scheuermann’s Disease?

Answer 18

Thoracolumbar brace
Strengthen the erectors
Stretch the pecs