Muscles
Let's go to the mall!
What is on the third level?
Flexor hallucis brevis
Flexor digiti minimi brevis
ADD hallucis
Composition of the midfoot.
Cuboid
Cuneiforms
Navicular
What does the tibial nerve branch off into?
Medial plantar nerve
Lateral plantar nerve
Motions at the at the talocrural joint. (in order from most dominant to least)
DF/PF
Inv/Ev
ABD/ADD
MCL ligaments
Anterior/Posterior tibiotalar
Tibionavicular
Tibiocalcaneal
These muscles make up the anterior compartment of the lower leg.
Tibialis anterior
Extensor digitorum longus
Extensor hallucis longus
Fibularis tertius
Facet shape of the fibula in the distal tibfib joint.
Convex facet of fibula
Where on the body is the small saphenous vein?
Posterior view of the lower leg (calf)
Subtalar Joint movements associated with WB supination and pronation.
SUP = Inv + ABD + DF (closed packed)
PRO = Ev + ADD + PF (open packed)
Talocrural and subtalar ligaments (2)
Cervical ligament
Interosseous talocalcaneal ligament
This muscle does weak plantar flexion of the ankle at the talocrural joint as well as weak flexion of the knee at the tibiofemoral joint.
Plantaris
T/F: the calcaneus has a convex shape.
(Talocalcaneal Joint)
False
*Convex facet in the posterior articulation
*Concave facet in the anterior/middle articulation
This muscles inverts the foot and dorsiflexes the ankle (at the talocrual joint). What is it's innervation?
Deep fibular nerve
Explain the movements of pronation twist and which joint this concept occurs at.
1nd/2nd = PF + Ev + ABD
4th/5th = DF + Ev + ABD
@TMTJ
Ligaments that reinforce the talonavicular joint (4)
spring ligament
deltoid ligament
bifurcate ligament
dorsal talonavicular ligament
What is the difference between the dorsal interossei and the plantar interossei in terms of their action?
Dorsal interossei: ABD 2nd --> 4th toes; Flex 2nd --> 4th toes
Plantar interossei: ADD 3rd --> 5th toes; Flex 3rd --> 5th toes
Where is the large end of the tarsal canal located?
Dorsalis pedis artery supplies these muscles.
Intrinsic muscles of the dorsal foot:
extensor digitorum brevis, extensor hallucis brevis, dorsal interossei
Does the transverse tarsal joint oppose or follow movement at the STJ?
Follow
T/F: the long plantar ligament provides more direct support to the lateral longitudinal arch
True
What is the importance of the quadratus plantae during gait?
Action: assist the flexor digitorum longus to flex 2nd --> 5th toes
*Produces stability during gait by resisting toe extension
Bones associated with the 2nd TMT
2nd MT, middle cuneiform, edges of medial and lateral cuneiforms
2 muscles that are innervated by the medial plantar nerve
ABD hallucis
Flexor digitorum brevis
Flexor hallucis brevis
Lumbrical to 2nd digit
Tell me type of joint for:
proximal tibfib
distal tibfib
talocrural
subtalar
talonavicular
calcaneocuboid
tarsometatarsal
metatarsophalangeal
interphalangeal
proximal tibfib: planar
distal tibfib: syndesmosis
talocrural: hinge
subtalar: planar
talonavicular: ball and socket
calcaneocuboid: saddle
tarsometatarsal: planar
metatarsophalangeal: condyloid
interphalangeal: hinge
§Deep transverse metatarsal ligament spans heads of metatarsals on _______ surface
Plantar