Test 4 Joints

Question 0

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

Answer 0

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

Question 1

The tibia and fibula are connected by 2 joints…

Answer 1

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

Question 2

Superior tibiofibular joint..what type?

Answer 2

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

Question 3

Tibiofibular syndesmosis is a …

Answer 3

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

Question 4

Unhappy triad

Answer 4

Acl, tibial collateral lig, medial meniscus

Question 5

Acl prevents

Answer 5

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

Question 6

Pcl prevents

Answer 6

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

Question 7

The knee is primarily a ___ type of joint

Answer 7

Hinge synovial

Question 8

The knee joint consists of 3 articulations

Answer 8

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

Question 9

The most important muscle in stabilizing the knee joint?

Answer 9

Quadriceps femoris, particularly vastus medialis and lateralis

Question 10

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

Answer 10

retrosynovial

Question 11

Functions of the menisci of the knee joint

Answer 11

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

Question 12

Limiting structures of knee flexion

Answer 12

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

Question 13

Limiting structures of extension

Answer 13

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

Question 14

Limiting structures of internal rotation of knee

Answer 14

Anterior cruciate lig and posterior cruciate lig

Question 15

Limiting structures of external rotation of knee

Answer 15

Tibial and fibular collateral ligs

Question 16

To unlock knee

Answer 16

Popliteus contracts and laterally rotates femur

Question 17

At the ankle weight is transferred to the

Answer 17

Trochlea of the Talus, which articulates with the two malleoli

Question 18

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

Answer 18

Navicular

Sustentaculum tali of the calcaneous

Question 19

What Converts anterior roll to spin during knee extension?

Answer 19

Pcl

Question 20

Talocrural joint is a ____

Answer 20

Synovial hinge joint

Question 21

Lateral ligaments of ankle joint

Answer 21

Ant talofibular
Post talofibular
Calcanofibular

Question 22

Most common ankle sprain…

Answer 22

With inversion … Anterior Talofibular ligament disrupted

Question 23

Subtalar

Answer 23

Plane synovial

Allows eversion and inversion

Question 24

Talonavicular

Answer 24

Synovial ball and socket

Allows gliding and rotary motions

Question 25

Calcaneocuboid

Answer 25

Plane synovial

Allows eversion and inversion, circumduction

Question 26

Cuneonavicular

Answer 26

– Plane synovial

– Allows little mobility

Question 27

Intertarsal

Answer 27

– Plane synovial

– Allow little mobility

Question 28

Tarsometatarsal

Answer 28

– Plane synovial

– Allow gliding motions

Question 29

Metatarsophalangeal

Answer 29

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

Question 30

Interphalangeal

Answer 30

– Synovial hinge

– Allows flexion/extension

Question 31

Patellofemoral joint

Answer 31

Modified plane synovial joint

Question 32

Fibular collateral ligament

Answer 32

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

Question 33

What Converts posterior roll to spin during knee flexion?

Answer 33

Acl

Question 34

Medial longitudinal arch

Answer 34

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

Question 35

Lateral longitudinal arch

Answer 35

• Flatterthanmedialarch

* Made up of calcaneus, cuboid, lateral 2 metatarsals

Question 36

Plantarcalcaneonavicular ligament fills..

Answer 36

:fillsgapbetween sustentaculum tali and navicular

Question 37

Short plantar lig

Answer 37

:anterioraspectofinferiorcalcaneusto inferior surface of cuboid

Question 38

Medial longitudinal arch gets support from?

Answer 38

Tib anterior and fibularis longus

Question 39

Long plantar lig

Answer 39

: calcaneus to groove of cuboid and bases of metatarsals