Anatomy Flashcards
why does the calcaneus stick out?
increase the length of the foot which allows us to take bigger strides
what are the 7 tarsals of the foot?
proximal
-calcaneus (heel bone)
-talus
intermediate
-navicular
distal
-cuboid
-3x cuneiforms (lateral, intermediate, medial)
how many metatarsals do we have?
5
how many phalanges do we have?
14
what is the true ankle joint?
talocrucal joint
-fibula, tibia and talus
-dorsi & plantarflexion
what is the subtler joint?
talocalcaneal joint
-talus, calcaneus
-eversion and inversion
what are the main ligaments of the foot?
medial (deltoid) ligament
4 named parts
lateral ligament (separate)
3 named parts
what is an ankle sprain?
when a ligament is sprained to an extreme extent
what is a muscle strain?
affects muscle or where muscle attaches to tendon
what is the retinacula?
stop the stringing of tendons
what are the 3 muscular compartments?
3 groups of retinacula
flexor
extensor - sup and inf
fibular - sup and inf
what is in the posterior part of the leg?
superficial ankle flexors
how many muscles are in the superficial posterior flexor compartment of the leg?
3, 2 powerful flexors
gastrocnemius
soleus
plantaris
all insert in the calcaneus tuberosity
all have flexion at the true ankle joint
inversion at the subtalar joint
gastrocnemius muscle?
origin: femur epicondyles
most superficial
flexor at the ankle and knee
medial and lateral heads
soleus muscle?
origin - fibular head- tendinous arch - solar line (plantaris)
big muscle
attaches along solear line
does not cross knee and ankle
plantaris muscle?
small
small muscle belly and long tendon
sometimes harvested for tendon grafting
crosses both knee and ankle joint
what are the deep ankle flexors?
tibialis posterior
flexor digitorum longus
flexor hallucis longus
flexion at the true ankle joint
inversion at the subtalar joint
tibialis posterior muscle?
lateral
attaches to posterior of tibia
travels medially
attaches to medial tarsus
what is the tarsal tunnel?
Tom dick and very naughty harry
(anterior to posterior)
tibialis posterior
flexor digitorum longus
posterior tibial artery
tibial nerve
flexor ha;;ucis longus
what causes tarsal tunnel syndrome?
compression of the tibial nerve