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Flashcards in Test 4 Joints Deck (40)
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The tibia and fibula are connected by 2 joints...

The superior tibiafibular and the tibiafibular syndesmosis (inferior tibiofibular joint)...move simultaneously

1

The fibers of the interosseius membrane and all ligaments of the tibiofibular articulations run ...

Inferiorly from the tibia to the fibula, resisting the downward pull placed on the fibula by most muscles attached to it

2

Superior tibiofibular joint..what type?

Synovial plane type of joint between the flat facet on the fibular head and a similar facet located posterolaterally on the lateral tibial condyle

3

Tibiofibular syndesmosis is a ...

Compound fibrous joint.... Essential for stability of ankle joint because it keeps the lateral malleolus firmly against the lateral surface of the talus

4

Unhappy triad

Acl, tibial collateral lig, medial meniscus

5

Acl prevents

The femur from sliding posteriorly on the tibia and hyperextension of the knee and limits medial rotation of the femur

6

Pcl prevents

The femur from sliding anteriorly on the tibia, particularly when the knee is flexed

7

The knee is primarily a ___ type of joint

Hinge synovial

8

The knee joint consists of 3 articulations

Two femorotibial articulations (lateral and medial condyles of femur and tibia)
One intermediate femoropatellar articulation( between patella and femur)

9

The most important muscle in stabilizing the knee joint?

Quadriceps femoris, particularly vastus medialis and lateralis

10

Cruciate ligaments are intracapsular but ______, hence get no blood supply

retrosynovial

11

Functions of the menisci of the knee joint

Deepen the articulate surface of tibia and play a role in shock Absorption

• Aid in lubrication and nutrition of joint
• Improve congruency of joint
• Distribute stress across articular cartilage • Reduce friction in the knee joint
• Poorly vascularized and innervated – Partly vascular in outer 1/3
– Poor healing potential

12

Limiting structures of knee flexion

Soft tissue mostly...
Tension of rectus femoris, vastus medialis, lateralis, and intermedius
Soft tissue apposition posteriorly

13

Limiting structures of extension

Anterior cruciate and posterior cruciate, fibular and tibial collateral, posterior joint capsule, and oblique popliteal lig

14

Limiting structures of internal rotation of knee

Anterior cruciate lig and posterior cruciate lig

15

Limiting structures of external rotation of knee

Tibial and fibular collateral ligs

16

To unlock knee

Popliteus contracts and laterally rotates femur

17

At the ankle weight is transferred to the

Trochlea of the Talus, which articulates with the two malleoli

18

The head of the talus articulates anteriorly with the ______ and rests partially on the ______

Navicular
Sustentaculum tali of the calcaneous

19

What Converts anterior roll to spin during knee extension?

Pcl

20

Talocrural joint is a ____

Synovial hinge joint

21

Lateral ligaments of ankle joint

Ant talofibular
Post talofibular
Calcanofibular

22

Most common ankle sprain...

With inversion ... Anterior Talofibular ligament disrupted

23

Subtalar

Plane synovial
Allows eversion and inversion

24

Talonavicular

Synovial ball and socket
Allows gliding and rotary motions

25

Calcaneocuboid

Plane synovial
Allows eversion and inversion, circumduction

26

Cuneonavicular

– Plane synovial
– Allows little mobility

27

Intertarsal

– Plane synovial
– Allow little mobility

28

Tarsometatarsal

– Plane synovial
– Allow gliding motions

29

Metatarsophalangeal

– Condyloid synovial
– Allows
• flexion/extension
• ab-andad-duction, circumduction

30

Interphalangeal

– Synovial hinge
– Allows flexion/extension

31

Patellofemoral joint

Modified plane synovial joint

32

Fibular collateral ligament


– Lateral epicondyle of femur
– Lateral surface of head of fibula
– Separated from lateral meniscus by popliteus

33

What Converts posterior roll to spin during knee flexion?

Acl

34

Medial longitudinal arch

• Composed of calcaneous, talus, navicular, 3 cuneiforms, 3 medial metatarsals
• Supportfrom:
– Tib A and Fibularis longus

35

Lateral longitudinal arch

• Flatterthanmedialarch
• Made up of calcaneus, cuboid, lateral 2 metatarsals

36

Plantarcalcaneonavicular ligament fills..

:fillsgapbetween sustentaculum tali and navicular

37

Short plantar lig

:anterioraspectofinferiorcalcaneusto inferior surface of cuboid

38

Medial longitudinal arch gets support from?

Tib anterior and fibularis longus

39

Long plantar lig

: calcaneus to groove of cuboid and bases of metatarsals