PHM Exam 2 - Knee Injuries

What are the two most common injuries during sports activity?

patellofemoral pain syndrome, ACL injury

________ percent of ACL injury are non-contact injury

70

What 3 structures are involved in the unhappy triad? Which are commonly injured

ACL, MCL, Medial meniscus

Is it more common to injure your knee from excessive valgus or varus force?

valgus

Proper Hip joint motor control of _________ & ________ rotation help prevent the valgus collapse of the knee

abduction, external rotation

How could a weak gluteus maximus affect the patellofemoral joint?

Increased lateral pull from the quadriceps leads to ______ _________ __________

Laterally deviated tracking

How could a weak gluteus maximus affect the tibiofemoral joint?

It stretches the _______

ACL

If you have a weak gluteus maximus does it limit your hip and knee flexion or extension?

flexion

Which correctly describes the affects of a weak gluteus maximus:
a. Decreased hip adduction + internal rotation

b. Increased hip abduction + external rotation

c. Increased hip adduction + internal rotation

d. Decreased hip abduction + external rotation

c

Are these muscles knee extensors or flexors?

rectus femoris

vastus intermedius

vastus lateralis

vastus medialis

extensors

Are these muscles knee extensors or flexors?

semitendinosus

gracilis

semimembranosus

gastrocnemius

Biceps femoris

plantaris

popliteus

flexors

Are these muscles internal or external knee rotators?

•Pes Anserine:

            Sartorius

            Gracilis

             Semitendinosus

•Semimembranosus

• popliteus

internal

Are these muscles internal or external knee rotators?

Biceps femoris

external