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32 Cards in this Set

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  • Back
name the 4 ankle joints
tibia/fibula
talus-tibia/fibula
subtalar
transverse tarsal
what kind of joint is the tibia/fibula?
slightly movable with an interosseous membrane
what kind of joint is the talus-tibia/fibula?
synovial hinge joint.
permits dorsi flexion (toes up) and plantar flexion.
what is and kind of joint is the subtalar?
Calcaneous/talus.
synovial joint that allows inversion and eversion.
what is the transverse tarsal joint and what does it do?
calcaneous/cuboid and talus/navicular.
greatest area of movement for inversion and eversion.
common place for foot amputation.
what are the 2 ankle ligaments?
Medial collateral
Lateral collateral
attachments of the medial collateral ligament of the ankle and what does it do:
Tibia to the talus, navicular, and calcaneous.
limits eversion (soul out).
Strong ligament, will tear of end of tibia (avulsion)
attachments of the lateral collateral ligament of the ankle and what does it do:
fibula to the calcaneous and talus.
limits inversion (sole in)
retinacula
wrappings of connectie tissue that hold tendons in place.
very tough deep fascia surrounding these muscles/
deep fascia compartmentalizes the leg into:
anterior, posterior and lateral compartments
anterior compartment leg muscles innervation, action, and where they run:
inn: deep peroneal
action: dorsi flexors
tibialus anterior (1st metatarsal)
extensor hallucis longus (digit 1)
extensor digiturom longus (digits 2-5)
peroneus tertias (5th metatarsal)
lateral compartment leg muscles innervation, action, and where they run:
inn: superficial peroneal
action: eversion, plantar flexion.
Peroneus longus (1st metatarsal)
Peroneus brevis (5th metatarsal)
both run under the lateral malleous and can be planar flexors.
posterior compartment leg muscles, innervation, action, and where they run:
inn: tibial nerve
action: plantar flexors
Gastrocnemius
Soleus
both are slow twitch muscles and attach to the calcaneal tendon.
deep posterior compartment leg muscles, innervation, action, and where they run:
inn: tibial nerve.
flexor hallucis longus (flexes big toe when walking).
flexor digitorum longus.
tibialus posterior.
these run under the medial malleous
the foot is designed to:
support bipedal posture
distribute weight.
locomotion
what are the 2 arches
Longitudinal arch and transverse arch
the "keystone" of the arch is the
talus
weight on the talus is transfered to:
the calcaneous (heel) and to the metatarsals/phalanges joint.
4 ligaments to maintain the arch
plantar-calcaneal-navicular lig
short plantar lig
long plantar lig
Plantar Aponerosis
plantar-calcaneal-navicular ligament (spring ligament) runs from:
calcaneous to navicular (under foot)
Short plantar runs from
calcaneous to cuboid
(under foot)
Long plantar runs from
calcaneous to metatarsals. lies superficial to the short plantar ligament. (under foot)
plantar aponerosis...
calcaneous to MP joint.
its a connective tissue, not ligament.lies in deep fascia.
helps maintain arch.
tightens when toes extend for push off.
Dorsal foot muscles:
extensor hallucis brevis
extensor digitorum brevis
inn: deep peronela nerve.
hallucis goes to digit 1
digitorum goes to digits 2-5
Plantar muscles have _____ compartments and are innervated by:
medial compartment
central compartment (4 layers)
lateral compartment
inn: tibial nerve which splits into lateral and medial plantar nerves.
medial compartment plantar muscles go to:
digit 1
central compartment muscles go to:
digits 2-4
lateral compartment muscles go to
digit 5
layer 1 muscles of central compartment of the foot
flexor digitorum brevis
abductor hallucis
abductor digiti minimi
layer 2 muscles of central compartment of the foot
flexor digitorum longus
quadratus plantae
lumbricals
layer 3 muscles of central compartment of the foot
adductor hallucis
flexor hallucis brevis
flexor digiti minimi
layer 4 muscles of central compartment of the foot
interossei