問題一覧
1
No fixed point
instantaneous axis of rotation
2
Moves in arc as you flex or extend
instantaneous axis of rotation
3
Stable tibia
femur moves forward
4
Unstable tibia
tibia moves forward
5
CKC FLEXION
POSTERIOR ROLL, ANTERIOR SLIDE
6
CKC EXTENSION
ANTERIOR ROLL, POSTERIOR SLIDE
7
OKC FLEXION
POSTERIOR ROLL, POSTERIOR SLIDE
8
OKC EXTENSION
ANTERIOR ROLL, ANTERIOR SLIDE
9
When is PJM usually done
open chain
10
Traction then oscillate posteriorly
increase knee flexion
11
Traction then oscillate anteriorly
increase knee extension
12
Open chain
tibia
13
Closed chain
femur
14
During knee extension
femur twists internally
15
During knee flexion
femur twists externally
16
During knee extension
tibia twists externally
17
During knee flexion
tibia twists internally
18
Locked knee essence during extension is for quads not to contract continuously
true
19
Locking mechanism; automatic terminal rotation
screw home mechanism
20
Locking mechanism with an automatic terminal locking
screw home
21
Due to inequality of the articular surface of femur condyles
screw home mechanism
22
Happens during 90 deg flexion
axial rotation
23
Axis of motion: intercondylar eminence
axis rotation
24
Due to joint laxity and incongruence
axial rotation
25
Can happen during voluntary passive motion
axial rotation
26
Greater mobility or rotation
axial rotation
27
Can be measured
axial rotation
28
Hapoens during knee extension
automatic terminal rotation
29
Fully automatic
automatic terminal rotation
30
Axis of motion: lateral condyle
automatic terminal rotation
31
Due to joint assymmetry
automatic terminal rotation
32
Found in plateau when knee is extended
intercondylar notch, intercondylar eminence
33
Largest sesamoid bone
patella
34
Measurement to assess patellar height
index of insall and salvati ratio
35
small facet found medially
odd
36
May appear bigger than odd facet
medial
37
Has greater contact surface tune
medial
38
Thicker hyaline cartilage to relieve the compressive forces
medial
39
Bigger patellar surface will coincide with the bulge of the lateral femoral patellar surface
lateral
40
Bony blick of patella to prevent dislocation or subluxation
lateral
41
Patella goes down
knee flexion
42
Patella goes up
knee extension
43
Patella lies on the femur
full ext
44
No actual surface contact thats why you can move it side to side
full extension
45
Inferior border starts to contract the groove of femur
10-20
46
Surface contact is on the tip of medial facet
30-70 deg
47
Patella as greatest anatomical pulley
30-70 deg
48
Quads tendon contracts to the condyle
70-90 deg
49
Patella deeply embedded
70-90 deg
50
All facets except odd facet are in contact
90 deg
51
Odd facet contracts medially; medial and lateral facets also maje contact against the femur
>90 deg
52
No medial facet is in contact, only ofd and lateral facet
135 deg
53
Too high patella
patella alta
54
Patella too low
patella baja
55
Patellofemoral has no ROM
true
56
Follows through a track of the intercondylar notch from the femoral patellar surface
patellar tracking
57
Movement of the patella along the course of the groove and notch of femur
patellar tracking
58
Movement along longitudinal axis of the patella
patellar tilt
59
Dependent on tibial rotation
patellar rotation
60
Q angle
15 deg
61
ASIS to midpoint of patella
q angle
62
Instances that increases q angle
coxa vara, wider pelvis, tight IT band, tight vastus lateralis, tight lateral extensor retinaculum, patella alta, lateral condyle hypoplasia