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Muscle attachments, innervations & actions
lower extremity- test 4
51
Anatomy
Professional
01/11/2011

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Cards

Term
gluteus maximus
Definition
ilium, sacrum, coccyx, sacrotuberous ligament --> gluteal tuberosity of femur, IT tract

innerv: inferior gluteal n. (L5, S1, S2)

extends hip, externally rotates thigh, stabilizes extended knee
Term
gluteus medius
Definition
ilium --> greater trochanter of femur

innerv: superior gluteal n. (L4, L5, S1)

abducts hip, internal rotation of thigh, levels pelvis during walking
Term
gluteus minimus
Definition
ilium --> greater trochanter of femur

innerv: superior gluteal n. (L4, L5, S1)

abducts hip, internal rotation of thigh, levels pelvis during walking
Term
tensor fascia latae
Definition
ASIS, iliac crest --> IT tract, anterolateral side of tibial tuberosity

innerv: superior gluteal n. (L4, L5, S1)

IT tract
Term
piriformis
Definition
ant. sacrum, sacrotuberous ligament --> superior part greater trochanter of femur

innerv: sacral plexus (S1, S2)

externally rotates thigh
Term
superior gemellus
Definition
ischial spine --> medial surface greater trochanter

innerv: n. to internal obturator(L5, S1)

externally rotates thigh
Term
inferior gemellus
Definition
ischial tuberosity --> medial surface greater trochanter of femur

innerv: n. to quadratus femoris (L5,S1)

laterally rotates thigh
Term
quadratus femoris
Definition
lat. border ischial tuberosity --> quadratus tubercle, intertrochanteric crest of femur

innerv: n. to quadratus femoris (L5, S1)

laterally rotates thigh
Term
internal obturator
Definition
obturator membrane --> medial surface greater trochanter femur

innerv: n. to internal obturator (L5, S1)

laterally rotates thigh
Term
iliopsoas
Definition
T12-L5 vert. bodies, t.p. L1-L5 and IV discs --> lesser trochanter of femur

innerv: ant. rami L2-L4 and femoral n.

flexes and stabilizes hip
Term
sartorius
Definition
ASIS --> superior medial tibia

innerv: femoral n.

flexes, abducts and laterally rotates hip, flexes knee, medially rotates leg when knee is flexed
Term
pectineus
Definition
sup. ramus pubis --> pectineal line of femur

innerv: femoral n.

adducts/flexes thigh, assists w/ medial rotation of hip
Term
rectus femoris
Definition
ASIS/ilium --> quadriceps tendon, base of patella and patellar ligament

innerv: femoral n.

extends knee and steadies hip joint
Term
vastus lateralis
Definition
greater trochanter/lateral lip linea aspera of femur --> quadriceps tendon, base of patella & patellar lig

innerv: femoral n.

extends knee, steadies hip joint
Term
vastus medialis
Definition
intertrochanteric line, medial lip linea aspera of femur --> quadriceps tendon, base of patella & patellar lig

innerv: femoral n.

extends knee, steadies hip joint
Term
vastus intermedius
Definition
anterior/lateral surfaces of shaft of femur --> quadriceps tendon, base of patella & patellar lig

innerv: femoral n.

extends knee, steadies hip joint
Term
gracilis
Definition
inferior ramus pubis --> superior medial tibia

innerv: anterior division obturator n.

adduct thigh, flex knee
Term
adductor longus
Definition
body of pubis --> medial 1/3 linea aspera of femur

innerv: ant. division obturator n.

adducts thigh
Term
adductor brevis
Definition
body and inf. ramus pubis --> pectineal line and prox. linea aspera of femur

innerv: ant. division obturator n.

adducts thigh
Term
adductor magnus (adductor part)
Definition
inf. ramus pubis and ischial ramus --> gluteal tuberosity, linea aspera and supracondylar line femur

innerv: post. division obturator n.

adducts thigh, flexes hip
Term
adductor magnus (hamstring part)
Definition
ischial tuberosity --> adductor tubercle of femur

innerv: tibial n.

extends hip
Term
obturator externus
Definition
obturator membrane --> trochanteric fossa of femur

innerv: posterior div. obturator n.

laterally rotates thigh
Term
semitendonosus
Definition
ischial tuberosity --> medial superior tibia

innerv: tibial division sciatic n. (L4-S3)

extend thigh, flex leg and medially rotate leg when flexed
Term
semimembranosus
Definition
ischial tuberosity --> posterior medial condyle of tibia

innerv: tibial division sciatic n.(L4-S3)

extends thigh, flexes leg and medially rotates when flexed
Term
biceps femoris (long head)
Definition
ischial tuberosity --> lat. side fibular head

innerv: tibial division sciatic n. (L4-S3)

extends thigh, flexes leg and medially rotates when flexed
Term
biceps femoris (short head)
Definition
linea aspera, lateral supracondylar line femur --> lateral side femoral head

innerv: common fibular div. sciatic n. (L4-S2)

extends thigh, flexes leg and medially rotates when flexed
Term
tibialis anterior
Definition
lat. tibial condyle --> med. cuneiform, 1st metatarsal

innerv: deep fibular n. (L4, L5, S1)

dorsiflexes and inverts foot
Term
extensor digitorum longus
Definition
lat. tibial condyle, fibula --> extensor expansions digits 2-5

innerv: deep fibular n. (L4, L5, S1)

dorsiflexes foot, extends toes 2-5
Term
fibularis tertius
Definition
inf. 1/3 ant. surface tibia, interosseous membrane --> base of 5th metatarsal

innerv: deep fibular n. (L4, L5, S1)

dorsiflexes & everts foot
Term
extensor hallucis longus
Definition
ant. surface fibula, interosseous membrane --> distal phalanx of great toe

innerv: deep fibular n. (L4, L5, S1)

weakly dorsiflexes foot, extends toe
Term
fibularis longus
Definition
head, upper 2/3 lat. surface fibula --> 1st metatarsal, medial cuneiform

innerv: superficial fibular n. (L5, S1, S2)

everts foot
Term
fibularis brevis
Definition
lower 2/3 lat. surface fibula --> base of 5th metatarsal

innerv: superficial fibular n. (L5, S1, S2)

everts foot
Term
gastrocnemius
Definition
med/lat femoral condyle --> calcaneus bone (Achilles tendon)

innerv: tibial n. (L4-S3)

flexes knee, plantarflexes foot
Term
soleus
Definition
soleal line of tibia, head of fibula --> Achilles tendon on calcaneus

innerv: tibial n. (L4-S3)

plantarflexes foot
Term
plantaris
Definition
lat. supracondylar ridge of femur --> Achilles tendon on calcaneus

innerv: tibial n. (L4-S3)

weak knee flexor, foot plantarflexor
Term
tibialis posterior
Definition
posterior tibia/fibula, interosseous membrane --> bases of metatarsals 2-4, tarsal bones

innerv: tibial n. (L4-S3)

plantarflexion, inverts foot
Term
popliteus
Definition
lat. femoral condyle --> posterior tibia

innerv: tibial n. (L4-S3)

laterally rotates femur to unlock knee
Term
flexor digitorum longus
Definition
posterior tibia, finula --> distal phalanges digits 2-5

innerv: tibial n. (L4-S3)

flexes toes 2-5, plantar flexion
Term
flexor hallucis longus
Definition
inf. 2/3 posterior tibia, inf. interosseous membrane --> distal phalanx great toe

innerv: tibial n. (L4-S3)

plantarflexes foot, flexes big toe
Term
extensor digitorum brevis
Definition
calcaneus --> extensor expansions digits 2-4

innerv: deep fibular n. (L4, L5, S1)

extends toes 2-4
Term
extensor hallucis brevis
Definition
calcaneus --> proximal phalanx great toe

innerv: deep fibular n. (L4, L5, S1)

extends big toe
Term
abductor hallucis
Definition
calcaneal tuberosity --> proximal phalanx great toe

innerv: medial plantar n.

abducts/flexes big toe
Term
flexor digitorum brevis
Definition
calcaneal tuberosity --> middle phalanx digits 2-5

innerv: medial plantar n.

flexes digits 2-5
Term
abductor digiti minimi
Definition
calcaneal tuberosity --> proximal phalanx little toe

innerv: lateral plantar n.

abducts & flexes 5th toe
Term
quadratus plantae
Definition
calcaneal tuberosity --> tendon of flexor digitorum longus

innerv: lateral plantar n.

assists FDL w/ flexion of toes
Term
lumbricals
Definition
tendon of flexor digitorum longus --> extensor expansions digits 2-5

innerv: lateral plantar n. (2-4), medial plantar n. (1)

flex toes 2-5 at MP joint and extend at IP joint
Term
flexor hallucis brevis
Definition
cuboid bone/lateral cuneiform --> prox. phalanx big toe

innerv: lateral plantar n.

flexes big toe
Term
adductor hallucis
Definition
plantar ligaments digits 3-5/3rd and 4th metatarsals

innerv: lateral plantar n.

adducts big toe
Term
flexor digiti minimi (brevis)
Definition
5th metatarsal --> proximal phalanx big toe

innerv: lateral plantar n.

flexes 5th digit
Term
plantar interossei
Definition
metatarsals 3-5 --> prox. phalanges & extensor expansions

innerv: lateral plantar n.

adducts toes 3-5
Term
dorsal interossei
Definition
metatarsals 2-4 --> proximal phalanges/extensor expansions

innerv: lateral plantar n.

abducts digits 3-5
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