Knees- Meniscal Pathology and Basic Arthroscopy

Question 1

on MRI how can you differentiate the medial from lateral tibial plateau

Answer 1

• Medial will be concave

- lateral more convex

Question 2

Blood supply to mensicus

Answer 2

medial and lateral geniculate arteries

Question 3

differences between medial and lateral menisci

Answer 3

• Medial more attached (to MCL and medial joint capsule) . . torn more often
• Lateral more mobile

Question 4

What meniscus is more commonly torn in acute ACL tear

Answer 4

Lateral

Question 5

What meniscus is more commonly torn from daily wear and tear if you don’t get your ACL tear fixed

Answer 5

medial

Question 6

Common question asked during knee scope . . what is covering ACL

Answer 6

-Ligamentum mucosum . . remnant of synovial fold

Question 7

Types of meniscal tears . .by shape

Answer 7

• Longitudinal
• Oblique
• Degenerative
• Radial
• Horizontal

Question 8

Describe the Outerbridge system of grading Chondromalacia

Answer 8

• Grade 0: normal knee
• Grade 1: softening
• Grade 2: fragmentation and fissuring in an area < 1/2 inch
• Grade 3: > 1/2 inch
• Grade 4: erosion down to bone

Question 9

What is the most sensitive physical finding for meniscal pathology

Answer 9

Joint line tenderness

Question 10

Strengthening which muscle will aid in proper patellar tracking

Answer 10

Vastus medialis oblique

Question 11

What type of meniscal tear has the most potential for healing

Answer 11

-Longitudinal tear in the red red zone

Question 12

What classic findings on an MRI indicates a bucket handle tear

Answer 12

• Double PCL sign

- Double Anterior horn sign