Exam #2 - Lower Limb Flashcards
Coxafemoral Joint is considered what type of joint
Ball and socket
Coxafemoral Joint degrees of freedom
3 - sagittal, frontal & horizontal
The femoral head is secured within the ________ by an extensive set of connective ________ & ______
The femoral head is secured within the acetabulum by an extensive set of connective tissues & muscles
Coxafemoral open-pack position
Capsule/lig & bony
Capsule/lig - 30° of flexion + 30° of abduction + slight external rotation
Bony - anything besides closed pack
Coxafemoral closed-pack position
Capsule/lig & bony
Capsule/lig - full ext + internal rotation + abduction
Bony - 30° of flexion + 30° of abduction + slight external rotation
The close-packed positioned for CFJ is the most ligamentous ____ positioned whereas the open-packed positioned is most ____ congruent positioned
taught
bony
The CFJ relies more on the ____ subsystem (form closure) for stability
Passive
Hip ABD & ADD happens in what plane of motion
Frontal plane
The weight bearing limb is referred to as the
Support hip
Pelvis-on-femoral applies to what rule
Convex on concave
What rule applied to femoral-on-pelvis
concave on convex
Posterior pelvic tilt results in flexion of the ________ spine (hip ext)
lumbar spine
Posterior pelvic tilt results in flexion of the ________ spine (hip ext)
lumbar spine
Pelvic tilt happens in what plane of motion
Sagittal plane
Anterior pelvic tilt results in flexion of the ________ spine (hip flx)
Lumbar spine
Hip IR & ER happen in what plane of motion
Horizontal plane
Knee flx & ext happen in what plane of motion
Sagittal plane
What rule applies to hip (pelvis-on-femoral) IR & ER
convex on concave
What rule applies to hip (femoral-on-pelvis) IR & ER
concave on convex
short arc of motion within the sagittal plane about a medial-to- lateral axis through both femoral heads
pelvic tilt
The direction of pelvic tilt - either anterior or posterior - is based on the
direction of rotation of a point on the iliac crest
Full pelvic-on-femoral rotation relies on an
ipsidirectional lumbopelvic rhythm
During hip internal rotation the iliac crest on the side of the nonsupport hip rotates ____ in the horizontal plane
ventral (post pelvic tilt)
During hip external rotation the iliac crest on the side of the nonsupport hip rotates ____ in the horizontal plane
dorsal (ant pelvic tilt)
The proximal tibiofibular joint is anatomically at the knee but functionally it is associated with the _______ _______ mobility
ankle joint mobility
The tibiofemoral joint is considered what type of joint
condyloid joint
Joint stability is provided by ____ & physical containment provided by muscles, ligaments, ______, ______ & body weight
Joint stability is provided by **forces **& physical containment provided by muscles, ligaments, capsule, menisci, & body weight
Tibiofemoral joint degrees of freedom
2 - sagittal & horizontal
Tibiofemoral joint function
Promote all bipedal/unipodal activities
TFJ open-pack position
25° flexion
TFJ closed-pack position
full ext + external rotation of tibia (screw home)
TFJ motions in the sagittal plane
flexion & extension
Axis of flx/ext of TFJ in the sagittal plane
medial-lateral
Extension of meniscotibial joint
Anterior meniscus moves ____ on tibia
tibiofemoral (distal on proximal)
Anterior meniscus moves anterior on tibia
Distal-on-proximal extension of tibiofemoral joint
CC tibia roll/slide anterior
**Distal-on-proximal ** extension of meniscofemoral joint
Post. meniscus moves anterior-distal on femur
Ant. meniscus moves anterior-proximal on the femur
Proximal-on-distal extension of tibiofemoral joint
CV femur rolls ____ & slides ____ on the tibia
CV femur rolls anterior & slides posterior on the tibia
Proximal-on-distal extension of meniscotibial joint
Anterior meniscus translates ____ on the tibia
Anterior meniscus translates anterior on the tibia
Proximal-on-distal extension of meniscofemoral joint
Post/Ant meniscus
Post. meniscus - Femur moves past the meniscus in a Posterior-proximal direction
Ant. meniscus - Femur moves past the meniscus in a Posterior-distal direction
Distal-on-proximal flexion of tibiofemoral joint
Tibia rolls & slides ____ & ____
Tibia rolls & slides posterior & superior
Distal-on-proximal flexion of meniscotibial joint
Posterior meniscus moves ____ on the tibia
Posterior meniscus moves posterior on the tibia
Distal-on-proximal flexion of meniscofemoral joint
Post. meniscus moves posterior-proximal on the femur
Ant. meniscus moves posterior-distal on the femur