biomechanics lower extremity

Helpfulness: 0
Set Details Share
created 5 years ago by hoovemaa
14 views
show moreless
Page to share:
Embed this setcancel
COPY
code changes based on your size selection
Size:
X
Show:
1

strongest hip flexor

iliopsoas

comes off lumbar vertebrae

2

what does the rectus femoris do?

flexes hip and extends the knee

3

hip extensor muscles

gluteus maximus

adductor magnus

hamstrings (biceps femoris, semimembranosus, semitendonosus)

4

what leads to anterior pelvic tilt?

tight hip flexors

weak hip extensors

5

what does anterior pelvic tilt cause?

exacerbates lumbar lordosis

contributes to low back pain

6

hip adductors (groin muscles)

adductor brevis, longus, magnus

pectineus

gracilis

7

hip abductors

glute medius, minimus

tensor fasciae latae

crucial for frontal plane stability during single leg stance

8

hip internal rotators

gulte medius and minimus

tensor fasciae

with help from medial compartment muscles

9

hip external rotators

glute max and medius

sartorius

10

valgus collapse

GRF during landing/cutting maneuvers causes hip adduction and IR torques

if frontal/transverse plane stability insufficient valgus collapse occurs

knees buckle in

11

knee extensors

quadriceps femoris

vasti lateralis, intermedius, medialis

rectus femoris

12

knee flexors

hamstring muscles-biceps femoris, semimembranosus, semitendonosus

13

greatest moment arm occurs when the knee is ____

flexed

14

which is stronger, knee flexors or extensors?

extensors

ratio is 2:1

15

why are knee extensors stronger than flexors?

they are constantly working against gravity