Flashcards in Lumbar Pelvic_Sacrum Deck (144)
Loading flashcards...
1
What are the 4 primary functions of the pelvis?
1. bear weight
2. transfer loads from axial skeleton to appendicular skeleton
3. stable, limited mobility --> more efficient transfer of loads
4. serves as strong attachment point for muscles
2
Prominent bony features is a feature of which gendered pelvis?
male
3
Narrow, heart shaped pelvic inlet is a feature of which gendered pelvis?
male
4
Narrow distance b/n ASIS and Ischial tuberosity is a feature of which gendered pelvis?
male
5
Laterally facing acetabulum is a feature of which gendered pelvis?
male
6
Narrow pubic arch (70˚) is a feature of which gendered pelvis?
male
7
Less prominent bony features (rounded) is a feature of which gendered pelvis?
female
8
Wide, oval pelvic inlet is a feature of which gendered pelvis?
female
9
Wide distance between ASIS and Ischial tuberosities is a feature of which gendered pelvis?
female
10
Anteriorly facing acetabulum is a feature of which gendered pelvis?
female
11
Wide pubic arch (90˚-100˚) is a feature of which gendered pelvis?
female
12
What are 3 implications of gender differences in pelvic structure:
1. different mechanics in gait (acetabulum orientation)
2. smaller base of support for males in sitting (@ ischial tub)
3. Different moment are, length-tension relationships for musculature
13
Males sit back on the _________ because they have closer _________________.
sacrum
ischial tubs
14
Females purch-up on the ______________
ischial tuberosity
15
List the muscles involved in pelvic/lumbar/sacral support and function:
Obturator externus, piriformis, gluteus minimus, superior gemellus, inferior gemellus, obturator internus, quadratus femoris, gluteus medius, gluteus maximus, and iliotibial tract
16
Pelvis has large influence on the _________, _________ and ___________.
trunk, hip and knee
17
The muscle attachments help:
1. transmission of loads
2. position influences length/tension relationships of muscles
18
What are the primary muscles involved in maintaining a unilateral stance of the frontal plane?
• Right hip abductor (glut medius)
• Left lumbar erector spianae
19
In a right hip tilt the glut medius is responsible for ________________________________. The left lumbar erector spinae are responsible for ________________________.
acting on the pelvis to pull into right lateral tilt
acting on pelvis to pull into right lateral tilt
20
Describe the characteristics of force couples:
- parallel forces
- equal magnitude
- opposite directions
- separated by some distance
21
Lumbo pelvic rhythm =
coupled motion b/n pelvis and lumbar spine
22
What can the lumbopelvic rhythm increase?
overal trunk motion for function
23
In research, the lumbar angle to hip angle was calculated using ratios during 25% of ___________________ phase
extension
24
@ 0-25% extension phase the L/Hip ratio =
0.26
25
@ 25-50% extension phase the L/Hip ratio =
0.61
26
@ 50-75% extension phase the L/Hip ratio =
0.81
27
@ 75-100% extension phase the L/Hip ratio =
2.3
28
ratio
hip dominate
29
>1 (L/H ratio) =
lumbar dominating
30
