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
Proximal-on-distal flexion of tibiofemoral joint
Femur rolls ____ and slides ____ on the tibia
Femur rolls posterior and slides anterior on the tibia
Proximal-on-distal flexion of meniscotibial joint
Posterior Meniscus translates ________ on the Tibia
Posterior meniscus translates posterior on the Tibia
Proximal-on-distal flexion of meniscofemoral joint
Post. meniscus: Femur moves past the meniscus in an ______-______ direction
Ant. meniscus: Femur moves past the meniscus in an ______-______ direction
Post. meniscus: Femur moves past the meniscus in an anterior-distal direction
Ant. meniscus: Femur moves past the meniscus in an anterior-proximal direction
Motions of the TFJ in the horizontal plane
Internal/external rotation
(concave on convex)
External rotation of TFJ
Concave tibia spins ____ on the convexity of the femoral condyles
Concave tibia spins laterally on the convexity of the femoral condyles
Internal rotation of TFJ
Concave tibia spins ____ on the convexity of the femoral condyles
Concave tibia spins medially on the convexity of the femoral condyles
During rotation of the tibiofemoral joint the menisci ____ with the femur
During rotation of the tibiofemoral joint the menisci stay with the femur
What happens to the menisci during ER of the TFJ
Lateral Meniscus translates ________ on tibia
Medial Meniscus translates ________ on tibia
Lateral Meniscus translates anterior on tibia
Medial Meniscus translates posterior on tibia
What happens to the menisci during IR of the TFJ
Lateral Meniscus translates ________ on tibia
Medial Meniscus translates ________ on tibia
Lateral Meniscus translates posterior on tibia
Medial Meniscus translates anterior on tibia
Distal-on-proximal movements of the patellofemoral joint
____ slides relative to the fixed ____
patella slides relative to the fixed femur
Proximal-on-distal movements of the patellofemoral joint
____ slides relative to the fixed ____
femur slides relative to the fixed patella
- Acts as a “spacer” between the femur & the quadriceps to increase the internal moment arm of the knee extensor mechanism
- lengthens the quadriceps muscle (50%)
Function of the patelofemoral joint
Proximal tibiofibular joint is classified as what type of joint
plane/gliding joint
Distal tibiofibular joint is classified as what type of joint
Syndesmosis joint
Talocrural joint is classified as what type of joint
Modified hinge joint
Subtalar joint is classified as what type of joint
Complex joint
Transverse tarsal joint is classified as what type of joint
Midtarsal joint
Distal intertarsal joint is classified as what type of joint
Planar joint
The tarsometatarsal joint is also known as the
Lisfranc’s joint
The metatarsophalangeal joint consists of
- Convex heads of the metatarsals
- Concavity of proximal end of phalanx
Function of Proximal Tibiofibular Joint
Accommodates rotation of the tibia during ____ motion and ____ motion of the foot.
Accommodates rotation of the tibia during knee motion and triplanar motion of the foot.
Function of Distal Tibiofibular Joint
Promotes stability of the ____ ____
Promotes stability of the talocrural joint
Function of Transverse Tarsal Joint
Allows the weight-bearing foot to adapt to a variety of ____ ____
Allows the weight-bearing foot to adapt to a variety of surface contours
Considered the most versatile joint in the foot
Transverse tarsal joint
Function of Distal Intertarsal Joints
- Assist the transverse tarsal joint in ____ & ____ the midfoot
- Provides stability across the midfoot by forming the ____ ____ of the foot
- Assist the transverse tarsal joint in pronating & supinating the midfoot
- Provides stability across the midfoot by forming the** transverse arch** of the foot
The five tarsometatarsal joints seperate the ____ from the ____
The five tarsometatarsal joints separate the midfoot from the forefoot
Only the first ____ joint has a well-developed capsule
Only the first tarsometatarsal joint has a well-developed capsule
Talocrural joint degrees of freedom
1 - sagittal
Subtalar joint degrees of freedom
3 - sagittal, frontal & horizontal
Transverse tarsal joint degrees of freedom
3 - sagittal, frontal & horizontal
Metatarsophalangeal joint degrees of freedom
2 - sagittal & horizontal
Talocrural joint axis of rotation
Lateral malleolus is inferior & posterior to the ____ ____
* 10° in the ____ plane
* 6° in the ____ plane
Lateral malleolus is inferior & posterior to the medial malleolus
* 10° in the frontal plane
* 6° in the horizontal plane
Talocrural Joint closed-packed position
Maximum dorsiflexion
Talocrural Joint open-packed positioned
10° of plantar flexion; midway between maximum inversion & eversion
Axis of TCJ
Anterior-medial-dorsal to posterior-lateral-plantar
What rule applied to the motions Dorsi- & plantar flexion of TCJ
Convex on concave
Motions that occur in the sagittal plane of the TCJ
Dorsiflexion
Plantarflexion
Dorsiflexion of TCJ
Convex talus rolls ____ & slides
____ on the concavity of the mortise
Convex talus rolls anterior & slides posteriorly on the concavity of the mortise
Plantarflexion of TCJ
Convex talus rolls ____ & slides ____ on the concavity of the mortise
Convex talus rolls posteriorly & slides anteriorly on the concavity of the mortise
The subtalar joint consists of 3 articulations between the posterior, middle, & anterior facets of the ____ & the ____
The subtalar joint consists of 3 articulations between the posterior, middle, & anterior facets of the calcaneous& the talus
Subtalar joint close-packed position
Maximum supination (PF, IV, ADD)
Subtalar joint open-packed position
Midway between extremes range of movement
Pronation & supination is made up of what other motions?
Pronation: DF + EV + ABD
Supination: PF + IN + ADD
STJ axis of rotation in the frontal plane
Dorsal-Distal-Medial to Plantar-Proximal-Lateral
Supination of STJ
Convex calcaneus rolls ____ & slides ____ on the concavity of the talus
Convex calcaneus rolls medially & slides laterally on the concavity of the talus
Pronation of STJ
Convex calcaneus rolls ____ & slides ____ on the concavity of the talus
Convex calcaneus rolls laterally & slides medially on the concavity of the talus
Transverse tarsal joint close-packed position
Maximum supination
TTJ open-packed position
Midway between extremes of range of movement
TTJ axis of rotation (all planes)
Dorsal-Distal-Medial to Plantar-Proximal-Lateral
Supination of TTJ
Concave naviculum spins ____ & ____ on the convexity of the head of the talus
Concave naviculum spins dorsal & lateral on the convexity of the head of the talus
Pronation of TTJ
Concave naviculum spins ____ & ____ on the convexity of the head of the talus
Concave naviculum spins plantar & medial on the convexity of the head of the talus
Pronation/Supination of the TTJ occurs in what plane of motion
Frontal, horizontal & sagittal
Dorsiflexion/Plantarflexion of the TTJ occurs in what plane of motion
Frontal, horizontal & sagittal
Dorsiflexion of TTJ
Concave naviculum rolls & slides ____-____ on the convexity of the head of the talus
Concave naviculum rolls & slides dorsal-distal on the convexity of the head of the talus
Plantarflexion of TTJ
Concave naviculum rolls & slides ____-____ on the convexity of the head of the talus
Concave naviculum rolls & slides plantar-proximal on the convexity of the head of the talus
Plane of motion for MTPJ flexion/extension
Sagittal
Plane of motion for MTPJ ABD/ADD
Horizontal
Axis for MTPJ flx/ext
medial-lateral
Axis for MTPJ ABD/ADD
Vertical
Flexion of MTPJ
Concave phalanx rolls & slides ____ on the convexity of the head of metatarsal
Concave phalanx rolls & slides plantar on the convexity of the head of metatarsal
Extension of MTPJ
Concave phalanx rolls & slides ____ on the convexity of the head of metatarsal
Concave phalanx rolls & slides dorsal on the convexity of the head of metatarsal
Abduction of MTPJ
1st MTP concave phalanx rolls & slides medial
Adduction of MTPJ
1st MTP concave phalanx rolls & slides ______
1st MTP concave phalanx rolls & slides lateral