-
In which plane does eversion occur?
C. frontal
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Which of the following is not an antagonist of the gastrocnemius?
B. tibials posterior
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What muscle action is involved in the movement of the ankle joint in the power phase of the standing long jump?
D. concentric action of the gastrocnemius
-
In performing a deep squat, which of the following is not an active muscle at the ankle?
B. tibialis anterior
-
Which of the following is not a prime mover in ankle dorsiflexion?
B. flexor digitorum longus
-
Which muscle is most active at the ankle as a postural muscle?
D. soleus
-
Inversion occurs at the ankle joint.
a. true
b. false
b. false
-
The extensor digitorum longus extends the toes and helps plantarflex the ankle.
a. true
b. false
b. false
-
Inversion of the calcaneus occurs with supination of the foot.
a. true
b. false
a. true
-
In normal, static upright posture, the arches of the feet need muscle force in order to maintain their structure.
a. true
b. false
b. false
-
does inversion or eversion occur with pronation?
eversion
-
does the weight shift medially or laterally during pronation?
medially
-
does inversion or eversion occur at the ankle?
no
-
what type of motion occurs at the ankle:
flexion and extension
-
what segment is moved during open chain motion at the ankle:
proximal segment; tibia
-
what are 2 important fxns of the ankle complex:
what 2 structural designs of the ankle complex allow these fxn to occur:
fxns: support, propulsion
- flexible structure; adaptablepronated position
- initial contact (heel strike)
- loading response (foot is flat, complete contact with the ground)
- rigid weight-bearing structurerigid structure to help propell forward
- becomes more supinated; more stable position of the foot
- midstance - weight is over supporting limb
- preswing
changes within a single step
what allows changes/adapatability? - interactions of bones (small bones and many of them), ligaments, & muscles
-
foot trouble is one of the most common ailments today.
explain why?
what can one do to improve the ailment?
why foot ailments are most common: poor foot mechanics can lead to discomfort (weak muscles; high or low archs; can be built up over time)
- to improve ailmentsmuscular development (as children)
- muscle strength
- proper foot mechanics
-
list the following...
# of bones:
# of joints:
# of muscles:
# of ligaments:
- # of bones: 28
- # of joints: 34
- # of muscles: 19 large, many intrinsic (start and end in the foot)
- # of ligaments: more than 100
-
list the bones of the rearfoot:
is the ankle more stable in dorsiflexion or plantarflexion:
what is unique about the design of the bone that allows for this stable position:
- rearfoot bonestalus
- calcaneus
- most stable position: dorsiflexion
design of the bone that allows this stable position: anterior section of the talus is wider
-
what is the basic structure of the foot:
what is the keystone of this strucutre:
in a static, upright, posture how is this structure maintained:
- structure of the foot: elastic arched structure
- keystone: talus; the "centerpiece of all the archs; force is imposed on this strucutre
- static, upright, posture maintained by: bones and ligaments; no muscles are needed
-
list the arches of the foot:
describe "fallen arches"
- longitudinal archesmedial longitudinal arch (usually low or high arch)
- lateral longitudinal arch
- view in sagittal plane
- heel to metatarsal head ( intrinsic muscles help to maintain the arches
- transverse archside to side concavity
- at anterior tarsal bones & metatarsals
- best seen in the frontal plane
- fallen arches
- lax ligaments
- navicular position
- plantar apuronsis.. provides tension
- inflammed - plantar fascitits
-
describe the fundamental movement definitions of eversion and inversion of the ankle:
plane:
axis:
- plane: frontal plane
- axis: anterior - posterior axis
que: in a posterior view, the position of the inferior portin of the calcaneus
-
describe the fundamental movement definitions of abduction and adduction:
plane:
axis:
- plane: transverse plane
- axis: vertical axis
que: how the talus moves in the transverse plane; talus (toes) toward/away from midline
-
describe the fundamental movement definitions of dorisflexion and plantarflexion:
plane:
axis:
- plane: sagittal plane
- axis: medial - lateral axis
-
list the joints of the ankle/foot complex starting from the most proximal, moving distally:
- talocural (ankle; most proximal)
- subtalar (talocalcaneal) & transverse tarsal
- metatarsophalangeal
- interphalangeal
-
osteology (bones this joint includes):
joint type:
degrees of freedom:
dorsiflexion ROM:
plantarflexion ROM:
of the talocrural joint
- osteolgoy: talus, tibia, fibula
- joint type: hinge joint
- degress of freedom: 1
- dorsiflexion ROM: 15-200
plantarflexion ROM: 500
- explain why it is more beneficial to be seated to gain more dorsiflexionthe gastroc crossed both the ankle and knee joint
- there is passive instability when standing
- trying to pass the gastroc over both joints during sitting allows for more ROM because the muscle is not as tight
-
list the ligamentouus reinforcement of the ankle on the medial side:
- deltoidscalcaneotibial
- anterior talotibial
- tibionavicular
- posterior talotibial
- plantar calcaneonavicular
- strong ligaments
-
list the ligamentous reinforcement of the ankle on the lateral side:
- anterior talofibular
- calcaneofibular
- posterior talofibular
- weaker than medial ligaments
- more sprains
-
osteology:
joint type:
degress of freedom:
inversion ROM:
eversion ROM:
of the subtalar joint
- osteology: talus, calcaneus
- joint type: gliding joint
- degrees of freedom: 1
- inversion ROM: 20-300
eversion ROM: 5-100
supination and pronation at the subtalar joint describe the position of the foot as a whole
-
osteology:
joint type:
degress of freedom:
motions occurin at this joint:
of the transverse tarsal joint
- osteology: talus, calcaneus, tarsal bones
- joint type: gliding joints
- degrees of freedom: 2
- motions that occur at transverse tarsal jointinversion/eversion
- abduction/adduction
- plantarflexion/dorsiflexion
-
osteology:
joint type:
degress of freedom:
motions occuring at this joint and ROM:
of the metatarsophalangeal joint
- osteology: metatarsal, phalanges (convex,concave)
- joint type: condyloid joint
- degress of freedom: 2
- motions at metatarsophalangeal jointFlexion/Extension
- -Great toe ROM: 45/700
-lesser toes ROM: 40/400minimal abduction/adduction (passive abduction when standing)
-
joint type:
degree of freedom:
motion occuring at this joint and ROM:
of the interphalangeal joint:
- joint type: hinge joint
- degree of freedom: 1
- motions occuring at the interphalangeal jointFlexion/Extension
- -PIP joints: 35/00
-DIP joints: 60/300
much vairation within & between subjects
-
during open chain supination...
what sagittal plane motion occurs:
what is the motion of the calcaneus:
what frontal plane motion occurs:
what transverse plane motion occurs:
- sagittal plane: plantarflexion
- motion of the calcaneus: inversion
- frontal plane motion: inversion
- transverse plane: ADDuction
-
during closed chain supination... (segment is proximal; external rotation of the proximal segment)..
what motion occurs in the sagittal plane:
what motion occurs in the frontal plane:
what motion occurs in the transverse plane:
- sagittal plane: dorsiflexion
- frontal plane: inversion
- transverse plane: ABDuction
-
during open chain pronation...
what motion occurs in the sagittal plane:
what motion occurs in the frontal plane:
what motion occurs in the transverse plane:
- sagittal plane: dorisflexion
- frontal plane: position of the calcaneus moves laterally; eversion
- transverse plane: ABDuction
-
during closed chain pronation..
what motion occurs in the sagittal plane:
what motion occurs in the frontal plane:
what motion occurs in the transverse plane:
- sagittal plane: plantarflexion; big toe is being pushed down
- frontal plane: eversion
- transverse plane: ADDuction (the talus)
-
list the action of the metatarsophalangeal joints (MTPJ):
list the action of the interphalangeal joints (IPJ):
- metatarsophalangeal jointflexion/Extension
- limited abduction/adduction
- interphalangeal jointsFlexion/Extension
-
list the 8 plantarflexors of the foot/ankle complex:
- gastrocnemius
- soleus
- flexor digitorum longus
- flexor hallucis longus
- peroneus longus
- peroneus brevis
- tibialis posterior
- plantarsi (very weak PF, basically disregarded)
-
what is the fxn of the gastrocnemius:
- plantarflexion
- powerful
- more effective when knee extended
- greater % of fast twitch fibersrunning, jumping
-
what are the 2 fxns of the soleus:
- plantarflexion
- supination (with gastroc, locks foot into rigid lever during WB)
- more slow twitch fibers
- important postural muscle
-
list the fxn of the flexor digitorum longus:
list the fxn of the flexor hallucis longus:
- flexor digitorum longusflexion of the toes
- PF, helps invert the ankle
- supports the longitudinal arch
- flexor hallucis longusflexion of the great toe
- PF, helps invert ankle
- supports longitudinal arch
-
what are the fxns of the peroneus longus:
- primary pronator of the foot (eversion)
- PF of the ankle
- supports the transverse and longitudinal arches
- PF & pronation helps transfer BW from lateral to medial side of the foot
-
what are the fxns of the peroneus brevis:
- with the peroneus longus, primary pronator of the foot (eversion)
- PF of the ankle
- helps maintain longitudinal arch
-
what is the fxn of the tibials posterior:
- predominantly supinator of the foot (inversion)
- PF of the ankle
- important in controlling and reversing pronation of foot during gait
-
list the 4 dorsiflexors of the ankle/foot complex:
- tibialis anterior
- peroneus tertius
- extensor digitorum longus
- extensor halluces longus
-
list the fxn of the tibialis anterior:
- primary dorsiflexor
- weak supination (inversion)
-
list the fxn of the extensor hallucis longus:
- extension of the great toe
- dorsiflexion of the ankle
- weak inversion of the foot
- both the extensor hallucis longus and the tibialis anterior supinate at heel strike (a period of strong pronation)
-
-
list the fxn of the extensor digitorum longus:
- extension of the toes
- weak ankle dorsiflexion
- eversion of the foot
-
list the fxn of the peroneus tertius:
- eversion (primary)
- weak dorisflexion
-
list the 4 evertors of the foot/ankle complex:
where are these muscles located:
- peroneus longus
- peroneus brevis
- peroneus tertius
- extensor digitorum longus
located: laterally on foot
-
list the 4 invertors of the foot/ankle complex:
where are these muscles located:
- tibialis anterior
- tibialis posterior
- flexor digitorum longus
- flexor hallucis longus
located: medially on the foot
-
list the planes in which each of the following movements occurs. list the axis of rotation for each movement in each plane:
plantarflexion:
dorsiflexion:
- plantarflexion: sagittal
- dorsiflexion: sagittal
-
list the planes in which each of the following movements occurs. list the axis of rotation for each movement in each plane:
inversion:
eversion:
- inversion: frontal plane
- eversion: frontal plane
-
list the planes in which each of the following movements occurs. list the axis of rotation for each movement in each plane:
flexion of the toes:
extension of the toes:
sagittal plane
-
how do you stretch the gastrocnemius and soleus muscles:
- gastrocnemiusstand facing a wall, placing both palms on the wall about 3 feet apart, leaning into the wall
- feet should be pointed straight ahead, heels remain on the floor
- soleusstretched in the same manner as the gastrocnemius, except the knees must be slightly flexed
-
how do you strengthen the gastrocnemius and the soleus:
- gastrocnemiusheel raising exercises with the knees in full extension
- toes resting on a block of wood
- soleusplantarflexion exercises against resistance
- heel raising exercises as described for the gastroc, except with the knee slightly flexed
- exercisesstanding calf raises
- one-leg toe raises
- donkey calf raises
- seated calf raises
- seated barbell calf raises
-
how do you stretch the peroneus longus and the peroneus brevis muscles:
passively taking the foot into extreme inversion and dorisflexion with the knee flexed
-
how do you stretch the peroneus tertius and the extensor digitorum longus muscles:
- peroneus tertiusextreme inversion and plantarflexion
- extensor digitorum longus musclespassivley taking the 4 lesser toes into full flexion whil the foot is inverted and plantarflexed
-
how do you strengthen the peroneus longus, peroneus brevis, peroneus tertius, and the extensor digitorum longus muscles:
eversion exercises, such as turning the sole of the foot outward against resistance
- peroneus tertiuspulling the foot up toward the shin against a weight or resistance
- everting the foot
- weighted towel drags
- exercisestowel drags
- elastic band turn outs
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