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