Knee, Ankle, Foot

Question 1

Brodie’s abscess

Answer 1

a subacute osteomyelitis

pus in bone

Question 2

anterior cruciate ligament

Answer 2

70% of all serious knee injuries

limits rotation & forward movement of tibia

• During flex of knee gives slack
• Common causes to tears:
  Changing/twisting direction rapidly Getting hit from side

Question 3

posterior cruciate ligament

Answer 3

Limits amount backward movement of tibia

• Tightens as knee flexed
• Stronger than ACL

Question 4

what appears bright within dark bone?

Answer 4

bone marrow edema

Question 5

knee positioning (set up)

Answer 5

slightly externally rotate foot about 10-15 degrees to stretch ACL

Question 6

What do long bone studies cover?

Answer 6

femur and tib-fib

Question 7

what is the most common soft tissue sarcoma?

Answer 7

liposarcoma

Question 8

medial cruciate ligament

Answer 8

stabilizes inner knee

more easily injured/ blow lateral stretching

Question 9

lateral cruciate ligament

Answer 9

stabilizes outer knee

Question 10

what muscle allows plantar flex of foot, post knee?

Answer 10

gastrocnemius

Question 11

bucket handle tear

Answer 11

posterior horn of medial meniscus, “double PCL” sign

Question 12

popliteal (baker’s) cyst

Answer 12

fluid-filled swelling, develops behind the knee

Question 13

intra-osseous ganglion

Answer 13

benign cysts in lower extremity (ankles)

sometimes around wrists

Question 14

how many planes should you run prior to foot exam?

Answer 14

3 planes