Arthrokinematics & Osteokinematics Flashcards

1
Q

Joint motion is dependent on:

A
Integrity of joint surfaces
Mobility and pliability of S.T.
Degree of S.T. approximation
Degree of fibrosis (scarring)
Age
Gender
Co-morbidities
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

AROM is dependent on:

A
Quantity
Willingness
Integrity of contractile & non-contractile tissues
Symptom reproduction
Pattern of motion restriction

Reduced vs. Normal vs. Excessive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

PROM is…

A

Info regarding the integrity of the inert tissues (non-contractile elements)
Allows for assessment of end-feel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Kinematics is…

A

the study of motion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Osteokinematics is…

A

bone on bone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Arthrokinematics is…

A

joint movements

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is “bone movement”?

A

When any object forms the radius of an imaginary circle about a fixed point.
Whole bone moving around a joint axis.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is “joint movement”?

A

Motion occurring at the joint surfaces

  • Concave (tibia)
  • Convex (femur)

aka “Joint Play” or “Accessory Motion”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Restricted arthrokinematic motion will result in…

A

Decrease osteokinematic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Do osteo and arthro motions occur simultaneously?

A

YES, directly proportional

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Does normal arthro motion must occur for full ROM onset motion?

A

YES

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Arthrokinemation motion has 3 motions:

A

Roll
Glide
Spine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is roll?

A

constantly changing surface on contact

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is glide?

A

2 fixed surfaces that still translate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is spin?

A

rotation around, surface spinning on surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Which artho motion do we access?

A

Glide!

Linear motion of bone on another joint surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

A glide is always accompanied by a roll. T/F?

18
Q

Which is easier to treat? Roll or Glide?

A

Glide, you can feel the joint glide

19
Q

Roll occurs in the ___ direction as the bone movement.

20
Q

Glide depends on…

A

the SHAPE

Convex-Concave RULE!

21
Q

If the moving joint surface is Concave, the glide occurs…

A

in the SAME direction as osteokinematic

22
Q

If the moving joint surface is Convex, the glide occurs…

A

in the OPPOSITE direction as osteokinematic

23
Q

What does a loss of joint accessory motion tell us?

A

Testing the ability of a joint surface to glide on another

24
Q

Limited joint surface glide (artho) there will be…

A

Less ROM (osteo)

25
Closed pack:
``` Max tautness of major lig. Max surface congruity Min joint volume Max stability of the joint Movements toward close-packed involved an element of compression ```
26
Open pack:
All positions away from close-pack!
27
How many resting positions are there?
ONE
28
Open pack, resting position:
``` Slackening of major lig. Min surface congruity Min joint surface contact Max joint volume Min stability of the joint Movements toward open-packed involve an element of distraction Only one resting position ```
29
Which position will there be the most glide of a joint?
Resting position, it can move...
30
Resting position of the knee
25 - 45 flexion
31
Close position of the knee
full extension, ER tibia
32
What are we feeling?
``` Quantity of motion - Hypo/Hyper/Normal Quality - Crepitis End-feel - Normal, Boney, Firm (Capsular/Muscular), Soft Abnormal - Spring, Boggy, Spasm, Empty, Pain ```
33
ACL: MOI
``` Valgus knee position Hyperextension, rotation 70% non-contact Deceleration phase Cutting, landing "Pop" Swelling, laxity, pain Chronic presentation - unstable joint, LOF (pain is gone) ```
34
MCL: MOI
Valgus Force, knee collapsing inward Football, soccer, slip, direct blow to lateral knee Often injured concurrently w/ meniscus or ACL Medial Knee Pain Tender to palpate specifically at MCL Valgus Stress Test w/ delayed endfeel, w/ pain, w/o firm
35
PCL: MOI
``` Hyperflexion Football, fall onto knees, dashboard Excessive tibial post translation C/O weakness, instability HS test will aggravate PCL ```
36
Patellofemoral Pain Syndrome
``` Commonly overuse Running related Malalignment between patella & femur Reduces contact area w/ increased mechanical stress IR/ADD ```
37
Patellofemoral Pain Syndrome: Impaired Hip Control
Femur moves independently during squatting | Quads contraction during WB anchors patella to stable tibia, allowing femur to move under extensor mechanism of knee jt
38
Patellofemoral Pain Syndrome: Physical Exam
Tenderness along facets of patella Crepitis Passive patella compression w/ w/o QS LAQ elicits CC Squatting, kneeling, or stretch to the quads/ITB May reproduce sx
39
ITBS
Tightness elicits increased rubbing, particularly in athletes performing repeated knee flexion/extension Runners, Triathletes, bikers, weight lifters, cross-fit participants Bursa, compressive forces Palpation is KEY! TIght ITB Hip muscle strength imbalances
40
What are the most common fractures?
Patellar & Tibial Plateau Easy to Dx Geared back to baseline, pre-morbid