Chris Knee

Question 1

name the 2 distinct joints of the knee

Answer 1

1. tibiofemoral

2. patellofemoral

Question 2

if you rupture your ACL what motion can’t you do?

Answer 2

side to side motion e.g. cutting in skiing, surfing, golf, netball

Question 3

what has chris told us about menisci

Answer 3

they are hella important.
- if you do your ACL then they will probably need to take off the flaky bits of menisci which leads to increase medial knee OA

Question 4

what is the “normal” position of the tibiofemoral joint?

Answer 4

normally in some degree of valgus

Question 5

should we see any hyperextension of the knee in gait?

Answer 5

no way! if you see that then something is not right…

Question 6

if you see external rotation of the tibia during gait where /why do you think that’s happening?

Answer 6

its from the hip probs (i.e. not the foot)

Question 7

if you see internal rotation of the tibia during gait where /why do you think that’s happening?

Answer 7

its probably from STJ pronation (i.e. the foot not the hip)

Question 8

what is the “screw home mechanism of the knee”?

Answer 8

during the last 20 degrees of extension tibia rotates approx. 10 degrees (during late swing)

Question 9

if you see a really loose unstable knee in extension during swing then they probably have an issue with their…

Answer 9

screw home mechanism

Question 10

if you see a really locked up rigid knee in extension (swing phase) then they probably have an issue with:

Answer 10

popliteus

Question 11

what has chris told us about patellofemoral pain?

Answer 11

• mutlifactorial condition
• requires tailored multimodal intervention
  when we go into knee flexion:
• loss of trunk+pelvic control
• pelvic maltracking and increas PFJ stress (lateral tilt, glide and rotation)
• hip mm function deficits + increase hip adduction and internal rotation on WB side
• quads weakness + delayed VMO activation (WB side)
• increased foot mobility (WB side)