Spring Unit 1 Flashcards
Fibularis longus origin
head and lateral surface of proximal fibula
fibularis longus insertion
base of 1st metatarsal medial cuneiform
fibularis longus action
platarflexion of talocrural joint in the horizontal axis and eversion of subtalar joint in the A-P axis
fibularis longus innervation
superficial fibular nerve L5-S1
fibularis brevis origin
lateral surface of distal fibula
fibularis brevis insertion
tuberosity of the base of the 5th metatarsal
fibularis brevis action
plantarflexion of talocrural joint in the horizontal axis and eversion of the subtalar joint in the A-P axis
fibularis brevis innervation
superficial fibular nerve L5-S1
tibialis anterior origin
lateral tibial condyle superior half of lateral surface of tibia interosseous membrane crural fascia
tibialis anterior insertion
middle and inferior surface of medial cuneiform. base of 1st metatarsal
tibialis anterior action
dorsiflexion of talocrural joint in the sagittal plane and inversion of subtalar joint in the A-P plane
tibialis anterior innervation
deep fibular nerve L4-L5
extensor hallucis longus origin
middle part of the anterior surface of the fibula and interosseous membrane
extensor hallucis longus insertion
dorsal aspect of the base of the distal phalanx of the 1st digit
extensor hallucis longus action
dorsiflexion of the talcrural joint and extension of the 1st digit (MTP) in the horizontal axis, and eversion of the subtalar joint in the A-P axis
extensor hallucis longus innervation
deep fibular nerve L4-L5
extensor digitorum longus origin
lateral condyle of tibia, head and anterior margin of fibula interosseous membrane
extensor digitorum longus insertion
dorsal surface of the middle and distal phalanges of digits 2-5
extensor digitorum longus action
dorsiflexion of talocrural joint and extension of digits 2-5 in the sagittal plane, and eversion of the subtalar joint in the A-P axis
extensor digitorum longus innervation
deep fibular nerve L4-L5
fibularis tertius origin
anterior surface of the distal 1/3 of the fibula and interosseous membrane
fibularis tertius insertion
dorsal aspect of the base (shaft) of the 5th metatarsal
fibularis tertius action
dorsiflexion of the talcrural joint in the horizontal axis and eversion of the subtalar joint in the A-P axis. May have proprioceptive fibers to help prevent ATFL damage- aids in resisting INV forces
fibularis tertius innervation
deep fibular nerve L4-L5
extensor digitorum brevis origin
floor of the tarsal sinus of the calcaneus
extensor digitorum brevis insertion
dorsal aspect of middle phalanges of digits 2-4
extensor digitorum brevis action
extension of digits 2-4 (MTP) with aid from extensor digitorum longus
extensor digitorum brevis innervation
branches of deep fibular nerve L5-S1
extensor hallucis brevis origin
floor of the tarsal sinus of the calcaneus
extensor hallucis brevis insertion
dorsum of base of proximal phalanx of 1st digit
extensor hallucis brevis action
extension of the 1st digit at MTP
extensor hallucis brevis innervation
branches of deep fibular nerve L5-S1
gastrocnemius medial head origin
popliteal surface of femur superior aspect of medial femoral condyle
gastrocnemius lateral head origin
superior aspect of lateral femoral condyle
gastrocnemius insertion
dorsum of calcaneus via calcaneal tendon
gastrocnemius medial head action
plantarflexion of talocrural joint in the horizontal axis when the knee is extended
gatrocnemius lateral head action
flexion of the knee in the sagittal plane
gastrocnemius innervation
tibial nerve S1-S2
soleus origin
posterior surface of the proximal fibula, soleal line of the tibia
soleus insertion
dorsum of calcaneus via calcaneal tendon
soleus action
plantarflexion of talocrural joint in the horizontal axis
soleus innervation
tibial nerve S1-S2
plantaris origin
lateral supracondylar line of the femur
plantaris insertion
dorsum of calcaneus via calcaneal tenon (just medial to calcaneal tendon)
plantaris action
plantar flexion of talocrural joint in the horizontal axis and flexion of the knee in the sagittal plane. proprioception of the muscles of the leg
plantaris innervation
tibial nerve S1-S2
tibialis posterior origin
interosseous membrane, interosseous margin of tibia and fibula, posterior surface of tibia inferior to soleal line
tibialis posterior insertion
tuberosity of navicular, all 3 cuneiforms, bases of metatarsals 2-4 sustentaculum tali axis (recurrent branch) cuboid (sometimes)
tibialis posterior action
plantar flexion of talcrural joint in the horizontal axis, inversion of subtalar joint in the A-P axis. fixes the medial longitudinal arch during weight bearing
tibialis posterior innervation
tibial nerve L4-L5
flexor digitorum longus origin
middle 1/3 of the posterior surface of the tibia inferior to the soleal line
flexor digitorum longus insertion
plantar aspect of bases of distal phalanges 2-5
flexor digitorum longus action
plantar flexion of talocrural joint in the horizontal axis, flexion of digits 2-5 in the sagittal plane
flexor digitorum longus innervation
tibial nerve S2-S3
flexor hallucis longus origin
distal 2/3 of posterior surface of fibula and interosseous membrane
flexor hallucis longus insertion
plantar aspect of base of distal phalanx of 1st digit
flexor hallucis longus action
plantar flexion of talocrural joint in the horizontal axis, inversion of subtalar joint in the A-P axis, flexion of the 1st digit (MTP)
flexor hallucis longus innervation
tibial nerve S2-S3
abductor hallucis origin
medial plantar calcaneal tubercle
abductor hallucis insertion
medial aspect of base of proximal phalanx of 1st digit
abductor hallucis action
abduction of 1st digit, flexion of 1st digit maintain the MLA
abductor hallucis innervation
medial plantar nerve S2-S3
abductor digiti minimi origin
medial and lateral sides of calcaneal tuberosity and plantar aponeurosis
abductor digiti minimi insertion
lateral aspect of base of proximal phalanx of 5th digit
abductor digiti minimi action
abduction of 5th digit, flexion of MTP joint
abductor digit minimi innervation
lateral plantar nerve S2-S3
flexor digitorum brevis origin
calcaneal tuberosity plantar aponeurosis
flexor digitorum brevis insertion
plantar aspect of base of middle phalanges of digits 2-5
flexor digitorum brevis action
flexion of MTPs and PIPs of digits 2-5
flexor digitorum brevis innervation
medial plantar nerve S2-S3
quadratus plantae origin
anterior calcaneus (medial and lateral margins) long plantar ligament
quadratus plantae insertion
tendon of flexor digitorum longus
quadratus plantae action
assist in flexion of digits 2-5, realigns the pull of the FDL tendon
quadratus plantae innervation
lateral plantar nerve S2-S3
Flexor hallucis brevis medial head origin
spring ligament medial aspect of the 1st metatarsal
flexor hallucis brevis medial head origin
medial aspect of base of proximal phalanx of 1st digit
flexor hallucis brevis medial head action
flexion of 1st MTP
flexor hallucis brevis medial head innervation
medial plantar nerve S2-S3
flexor hallucis brevis lateral head origin
cuboid lateral cuneiform
flexor hallucis brevis lateral head insertion
lateral aspect of base of proximal phalanx of 1st digit
flexor hallucis brevis lateral head action
flexion of 1st MTP
flexor hallucis brevis lateral head innervation
medial plantar nerve S2-S3
flexor digiti minimi origin
plantar aspect of base of 5th metatarsal, long plantar ligament
flexor digiti minimi insertion
base of proximal phalanx of 5th digit
flexor digiti minimi action
flexion of 5th MTP
flexor digiti minimi innervation
lateral plantar nerve S2-S3
semimembranosus origin
ischial tuberosity
semimembranosus insertion
posterior aspect of medial tibial condyle, oblique popliteal ligament
semimembranosus action
extension of hip flexion, of knee internal rotation of knee in flexed position
semimembranosus innervation
tibial division of sciatic nerve L5-S2
semitendinosus origin
ischial tuberosity
semitendinosus insertion
medial surface of superior part of tibia (pes anserinus 3rd)
semitendinosus action
extension of hip, flexion of knee, internal rotation of knee in flexed position
semitendinosus innervation
tibial division of sciatic nerve L5-S2
gracilis origin
pubic symphysis, inferior pubic ramus
gracilis insertion
medial surface of tibia (pes anserinus 2nd)
gracilis action
adduction of hip, flexion of knee, and internal rotation of knee when flexed
gracilis innervation
anterior division of obturator nerve L2-L3
Sartorius origin
anterior superior iliac spine (ASIS)
sartorius insertion
medial surface of tibia (pes anserinus 1st)
sartorius action
flexion of hip, abduction of hip, external rotation of hip, flexion of knee, and internal rotation of tibia when knee is flexed, flexion of knee
sartorius innervation
muscular branches of femoral nerve L2-L3
bicep femoris long head origin
ischial tuberosity
biceps femoris short head origin
lateral lip of the linea aspera of femur
biceps femoris insertion
lateral aspect of the head of the fibula
biceps femoris long head action
flexion of the knee
biceps femoris short head action
external rotation of the knee and extension of hip
biceps femoris long head innervation
tibial division of sciatic nerve L5-S2
biceps femoris short head innervation
common fibular division of sciatic nerve L5-S2
adductor magnus ischiocondylar (hamstring) part origin
ischial tuberosity
adductor magnus ischiocondylar (hamstring) part insertion
adductor tubercle
adductor magnus ischiocondylar (hamstring) part action
extension of hip
adductor magnus ischiocondylar (hamstring) part innervation
tibial part of sciatic nerve L4
popliteus origin
lateral surface of the lateral femoral condyle, and lateral meniscus
popliteus innervation
posterior surface of tibia superior to soleal line
popliteus action
flexion of the knee in the sagittal plane, external rotation of the femur (transverse, CKC) screwhome mechanism internal rotation of the tibia (OKC, transverse) draw lateral meniscus and femur posteriorly in knee flexion
popliteus innervation
tibial nerve L4-S1
plantar interossei (1st, 2nd, 3rd) unipennate insertion
bases and medial aspects of digits 3-5
plantar interossei (1st, 2nd, 3rd) unipennate action
flexion of the MTPs and extension of IPs of digits 3-5 adduction of digits 3-5
dorsal interossei (1st, 2nd, 3rd, and 4th) bipennate insertion
1st DAB- medial surface if proximal phalanx of digit 2.
2-4th DAB lateral sides of digits 2-4
dorsal interossei (1st, 2nd, 3rd, and 4th) bipennate action
flexion of MTP and extension of IPs of digits 2-4, abduction of digits 2-4
lumbricals origin
tendon of flexor digitorum longus
lumbricals insertion
medial aspects of extensor expansion
lumbricals action
flexion of proximal phalanges of digits 2-5 aid in extension of middle and distal phalanges 2-5
lumbricals innervation
lumbrical most medial- medial plantar nerve
lateral 3 lumbricals- lateral plantar nerve
adductor hallucis oblique head origin
plantar aspects of bases 2-4 metatarsals tendon of fibularis longus
adductor hallucis transverse head origin
plantar ligaments of MTP joints, deep transverse metatarsal ligament
adductor hallucis insertion
lateral aspect of base of proximal phalanx of 1st digit
adductor hallucis action
adducts 1st digit at MTP joint
adductor hallucis innervation
deep branch of lateral plantar nerve S2-S3