table and new

Question 1

Describe how the shear forces change with knee motion

Answer 1

1 OKC - 100-60 degree posterior shear (PCL) 40-0 anterior shear (ACL)
2. CKC - posterior shear that increases with greater knee flexion (PCL)

Question 2

what is a segond fracture?

Answer 2

• avulsion fracture of anterior lateral margin of the lateral tibial plateau at capsular attachment associated with ACL tears
• lateral capsular sign on radiograph

Question 3

Medial knee instability in a pre-puberty individual is do to what?

Answer 3

Disruption of the epiphyseal strength versus MCL because it is the weak link

Question 4

knee strength rations for return to activity with ACL repairs?

Answer 4

50% jogging
65% for sports agility
80% for return to sport

Question 5

Osteochondral lesions typically occur where with ACL injuries

Answer 5

lateral femoral condyle

Question 6

week 25 ACL post op milestones

Answer 6

• quad strength 80% or greater

- hop test 85% or greater

Question 7

WB restrictions with ACL WB restriction

Answer 7

4 weeks NWB location depends