func anat 3 (final) Flashcards
pelvic girdle
- Sacrum and coccyx
- Ilium
- Ischiuim
- Pubis
joints of the pelvis
- Sacroiliac joints (SI)
- Pubic symphysis
- L5-S1 –
lumbosacral joint
ASIS is ____ AIIS
superiors
motions of the pelvis
- Anterior pelvic tilt
- Posterior pelvic tilt
- Lateral pelvic tilt
anterior pelvic tilt
Increased lordosis of lumbar
spine
Extension of the lumbar spine
Flexion of the hip joint
posterior pelvic tilt
Decreased lordosis of
lumbar spine
Flexion of lumbar spine
Extension of hip joint
muscle responsible for anterior tilt
Spine extensors – contract to
pull up the posterior pelvis
Hip flexors – contract to pull
down anterior pelvis
the muscles involved in posterior pelvic tilt
Abdominals – contract to
pull up anterior pelvis
Hip extensors – contract
to pull down on posterior
pelvis
Hip abductor on stance side
pulls down
on pelvis, toward hip; this “hip hiker”
pulls up on unsupported side
Flexion of the sacrum
increased lordosis
of the lumbar spine =
lumbar extension.
NUTATION
extension of the sacrum
decreased lordosis of
the lumbar spine = lumbar
flexion
COUNTERNUTATION
Lumbar extension – ↑ lumbar lordosis – flexion of sacrum =
NUTATION
Lumbar flexion – ↓ lumbar lordosis – extension of sacrum =
COUNTERNUTATION
How many plane of motion can the hip joint move
three planes: triaxial
hip joint is between…
the femoral head and the acetabulum of
the pelvis
femur
head, neck, and shaft
angle of inclination of the femur
130 degrees (125-135 degrees)
torsion angle- neck of femur
15 degree
Greater trochanter and lesser
trochanter are for ______
muscle attachments
Extensive ligaments between
femur and all three pelvis
bones…
- Iliofemoral –”Y ligament” (ilium and femur)
- Ischiofemoral (ischium and femur)
- Pubofemoral (pubis and femur)
- Ligament of the head of the
femur (“inside”)
—–Joint capsule
—–Labrum
HIP SLIDE 21 ANATOMY
ESPECIALLY BOTTOM RIGHT CORNER
hip flexion/extension (plane?)
sagittal plane
hip abduction/adduction (plane?)
frontal plane
hip internal/external rotation (plane?)
transverse plane
pelvis and femur flexion movements
- Femur (thigh) comes
toward trunk - Trunk flexes forward,
coming toward thigh
(touch toes) - Pelvis tilts anteriorly
which is accompanied by
lumbar extension
pelvis and femur extension movements
- Femur is extended
backward away from the front
of trunk - Pelvis is rotated backward
(standing back bend) - Posterior pelvic tilt, which
is accompanied by lumbar
spine flexion
pelvis and femur abduction movements
- Femur is brought away
from midline in frontal
plane - Trunk is brought toward
leg in frontal plane (side
bending) - Stance leg when hip is
hiked up
pelvis and femur adduction movements
- Femur is brought toward
or across the midline - Trunk is brought away
from leg in frontal plane
(side bending) - Stance leg when hip is
dropped
pelvis and femur internal and external rotation movements
- Similarly, the femur can
move in or out on the pelvis
or - The pelvis can move in or
out on the femur
torsion angle variations
line through trochanters
* Anteversion- too anteriorly rotated
* Retroversion- too posteriorly rotated
angle of inclination
line through femur head and neck
* Coxa vara
* Coxa valgus
head of the femur is rotated ____ slightly
anteriorly
anteversion
more that 15 degrees of torsion—results in ‘toe in’ or toe rotated medially
retroversion
less than 15 degrees of torsion— results in ‘toe out’ or toe pointed laterally
coxa varus?
angle is smaller than it should be/turns medially
-results in valgus knee position?
coxa valgus?
angle is wider than it should be/turns laterally
-results is varus knee position?
joints of the knee (2)
*Tibiofemoral joint-distal femur and
proximal tibia
*Patellofemoral joint-underside of
the patella and the femur
tibiofemoral joint
*Condyloid joint-one bone on top of another- unstable
*Ligaments and muscles make
up for lack of bony stability
*two degress of freedom
patellofemoral joint
*Femoral condyles are
covered with articular
cartilage.
*Trochlear groove
(“patellar surface”) is
the sulcus for the
patella.
what are the planes the tibiofemoral joint moves on
sagittal and transverse
Varus is when the joint is _____ to the bones
above and below.
lateral
Valgus is when the joint is _____to the bones
above and below.
medial
I DON’T UNDERSTAND VARUS AND VALGUS ANGLE OF THE KNEE AND HIP AND HOW THEY EFFECT EACHOTHER
LEARN ABOUT THIS- KNEE SLIDE 5
KNEE SLIDE 3 AND 4 ANATOMY
LEARN AND LABEL
The knee naturally moves in a _____ direction
valgus (medial)
Q angle
Angle formed when using center of
patella as axis, ASIS as landmark for
one arm of the goniometer, and the
tibial tuberosity as the landmark for
the other arm (more info on knee slide 6)
Q angle of ______° in males
10-12
Q angle of ______ ° in females
15-17 (wider because of the width of the pelvis)
Tibia to femur relationship:
______ ° valgus is normal
5-7
Tibiofemoral Joint-ligaments
- MCL – medial collateral
- LCL – lateral collateral
- ACL – anterior cruciate
- PCL – posterior cruciate
ligaments are _____ restraints
passive
muscles are _____ restraints
active
LCL prevents
varus (lateral)
MCL prevnts
valgus (medial)
ACL prevents
anterior translation of tibia and femur
MCL resists a valgus-producing force-On which
side of the knee would the
force be directed?
lateral
PCL prevents
posterior translation tibia and femur
LCL resists a varus-
producing force – On which
side of the knee would the
force be directed?
medial