SIJ and hip Flashcards
what are the attachments of the sacrotuberous lig
posterior iliac spine
lateral sacrum
ischial tub
what are the attachments of the sacrospinous lig
ischial spine
lateral sacrum
what are the attachments of the fibrous joint capsule
acetabulum to the neck
intertrochanteric line
intertrochanteric crest of femur
what are the attachments of the iliofemoral lig
AIIS
intertrochanteric line of femur
what are the actions of the iliofemoral lig
limits extension of femur
becomes taught with ER
what are the attachments of the pubofemoral lig
iliopubic eminence
superior pubic ramus to fibrous capsule
what are the actions of the pubofemoral lig
limits abduction of femur
becomes taught with ext and ER
what are the attachments of the ischiofemoral lig
iscihum post to acetabulum
greater troch
iliofemoral lig
what are the actions of the ischiofemoral lig
assists iliofemoral lig in limiting extension of femur
whats the attachment of the ligament of the head of the femur (ligamentum teres)
fovea of femoral head
actebaular notch
what are the attachments of the transverse acetabular lig
interconnects margins of the acetabular notch
what kind of joint is the SI joint
planar
what are the stabilizers of the SI joint
sacrospinous
sacrotuberous
what is nutation (inferoposterior glide)
occurs in standing
superior moves ant + inf
inferior moves post + sup
what is counter nutation (anterosuperior glide)
superior moves post
inferior moves anterior
what is the primary function of the SIJ
to distribute force in the stable pelvic ring
what is the angle of inclination
the angle of the femoral head and neck on shaft of femur
what is a normal angle of incliation
125
what does coxa valga go with?
genu varum
what does coxa vara go with?
genu valgum
what is a normal angle of torsion
8-15 degrees
what closes off the acetabulum
transverse acetabular ligament
what does the labral seal do
- may provide stability
- does protect articular cartilage through pressurization
- if you have a seal, synovial fluid cant leak out and ruin the cartilage
what does the fibrous joint capsule do
- encapsulates joint
2. provides stability
what does the iliofemoral Y ligament do
- can hold the body weight balanced over the femoral heads
- tightens up with ER, IR, Ext
when does the pubofemoral lig tighten
Ext
ER
when does the ischiofemoral lig tighten
Ext
IR
adduction
what are hip osteokinematics with flexion
spin with slight inferior
posterior glide at terminal motion
what are hip osteokinematics with extension
spin with slight anterior
superior glide at terminal motion
what are hip osteokinematics with ER
anterior glide
what are hip osteokinematics with IR
posterior glide
what are hip osteokinematics with adduction
superior glide
what are hip osteokinematics with abduction
inferior glide
what is coxa vara
115 or <125
- inf to the center of the acetabulum
- Creates genu valgum (knock knee)
- Increases force on the femoral neck.
- More coverage leading to increased risk of impingement.
what is coxa valgus
140 or >125
- Sup to the center of the acetabulum
- Creates genu varus
- Increased force on the muscles for stability with SL stance.
what is excessive anteversion
-increased angle/ ant rotation of the femoral head (in front of the center point on the
acetabulum)
-creates a toe in
what is retroversion
-decreased angle/ post rotation of the femoral head (behind the center point on the
acetabulum)
-creates toeing out
