Biomechanics

Question 0

Retroversion

Answer 0

Decrease in termed (Knees out)

Question 1

Anteversion

Answer 1

Increase in termed (Knees in)

Question 2

Coxa vara/Genu valga

Answer 2

Decrease in angle (knock knee)

Question 3

Coxa Valga (Genu Vara)

Answer 3

Increase in angle (bow legged)

Question 4

Passive insufficiency

Answer 4

Limited motion caused by an inactive, antagonistic muscle with insufficient length to permit complete ROM

Question 5

Active Insufficiency

Answer 5

Diminished ability of a muscle to produce or maintain active tension

Question 6

True synergy

Answer 6

The prevention of undesired movement at the joint caused by the contraction of a multi-joint muscle (making a fist, wrist extensors counteract wrist flexion)

Question 7

Helper Synergy

Answer 7

2 muscles with common actives, but are also antagonistic to each other (ant. deltoid and post deltoid creating shoulder abduction)

Question 8

Fixator or Stabilizer

Answer 8

Muscle which anchors, stabilizes or supports above of body segment to allow contraction by other, more distal muscles.

Question 9

what causes genu recurvatum

Answer 9

Ligamentus laxity
weak quadriceps
tight achilles tendon

Question 10

Cruciates are intracapsular BUT

Answer 10

extrasynovial

Question 11

3 major bursa of the knee joint capsule

Answer 11

Suprapatellar
Subpopliteal
Subgrastrocnemius
ALL COMMUNICATE WITH EACH OTHER

Question 12

Extracapsular Bursa consist of

Answer 12

Prepatellar
Infrapateller (deep, superficial)
DO NOT COMMUNICATE WITH EACH OTHER

Question 13

Infrapatellar fat pad is strengthened by what

Answer 13

Intrapatellar fold which is located inside the intercondylar fossa

Question 14

Infrapatellar Structures

Answer 14

Ligamentum patellar
Infrapatella fat pad
Infrapatellar synovial fold

Question 15

Force Couple

Answer 15

2 opposite forces which tend to cause rotation about an axis
Upper trapezius and serratus anterior