2.01 gross anatomy trans - am thigh, al leg and dorsum of foot tables of muscle groups

! 1!

ANTEROMEDIAL+THIGH,+ANTERLATERAL+LEG+AND+DORSUM+OF+FOOT+MUSCLE+GROUPS+

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

ANTERIOR+THIGH:+FLEXORS+OF+THE+HIP+JOINT+(SIP2)**+MUSCLE+ ORIGIN+ INSERTION+ NERVE+SUPPLY+ ACTION+Sartorius+ Anterior!Superior!Iliac!Spine!(ASIS)! Upper!medial!surface!of!

shaft!of!tibia!Femoral!Nerve! Flexes,!abducts,!laterally!

rotates!thigh!at!hip!joint;!flexes!and!medially!rotates!

leg!at!knee!joint!Iliacus+ Iliac!fossa!of!hip!bone! Lesser!trochanter!of!

femur!Flexes!thigh!on!truck;!if!thigh!is!fixes,!it!flexes!the!trunk!on!the!thigh!as!in!

sitting!up!from!lying!down!

Psoas+ Transverse!processes,!and!intervertebral!discs!of!the!12th!thoracic!and!5!lumbar!vertebrae!

Lumbar'Plexus'

Pectinius*+ Superior!ramus!of!pubis! Upper!end!of!linea!aspera!of!shaft!of!femur!

Femoral!Nerve! Flexes!and!adducts!thigh!at!hip!joint!

*According'to'Dr.'DJ,'PECTINIUS'is'also'an'EXTENSOR'OF'THE'KNEE'JOINT'**An'Additional'Anterior'Thigh'Muscle'is'the'TENSOR'FASCIAE'LATA'

ANTERIOR+THIGH:+EXTENSORS+OF+THE+HIP+JOINT+(RV3)**+MUSCLE+ ORIGIN+ INSERTION+ NERVE+SUPPLY+ ACTION+

QUADRICEPS+FEMORIS+Rectus+Femoris+ Straight!head:!Anterior!Inferior!Iliac!

Spine!(AIIS)!Reflected!head:!

Ilium!above!acetabulum!

Quadriceps!tendon!into!patella,!then!via!

ligamentum!patellae!into!tubercle!of!tibia!

Femoral!Nerve! Extension!of!leg!at!knee!joint;!flexes!thigh!at!hip!

joint!

Vastus+Lateralis+ Upper!end!and!shaft!of!femur! Extension!of!leg!at!knee!joint!

Vastus+Medialis+ Extension!of!leg!at!knee!joint;!stabilizes!patella!

Vastus+Intermedius+ Anterior!and!lateral!surfaces!of!shaft!of!femur!

Extension!of!leg!at!knee!joint;!articular!genus!retracts!synovial!

membrane!

! 2!

!!!!!!!!!!!!!!!

!

! 3!

!!

!

MEDIAL+THIGH:+ADDUCTORS)OF)THIGH+(LBM+GO)+MUSCLE+ ORIGIN+ INSERTION+ NERVE+SUPPLY+ NERVE+ROOT+ ACTION+

Adductor+Longus+ Body!of!pubis!below!its!crest!

Middle!third!of!linea!aspera!

Obturator!nerve! L2,!L3,!L4! Adducts!thigh!at!hip!joint!and!assists!in!lateral!motion!

Adductor+Brevis+ Body!of!inferior!pubic!ramus!

Pectineal!line,!upper!part!of!linea!aspera!

Obturator!nerve! L2,!L3,!L4! Adducts!thigh!at!hip!joint!and!assists!in!lateral!rotation!

Adductor+Magnus+ Ischiopubic!ramus,!ischial!tuberosity!

Linea!aspera,!medial!supracondylar!line,!adductor!tubercle!

Obturator!nerve!and!sciatic+nerve!

(tibial!part)!

L2,!L3,!L4! Adducts!thigh!at!hip!joint!and!assists!in!lateral!rotation;!hamstring!

portion!extends!thigh!at!hip!joint!Gracilis+ Inferior!ramus!of!

pubis,!ramus!of!ischium!

Medial!surface!of!upper!quarter!of!tibia!

Obturator!nerve! L2,!L3! Adducts!and!flexes!thigh,!flexes!and!rotates!leg!medially!

Obturator+Externus+ Margin!of!obturator!foramen!and!pubic!and!ischial!rami!

Intertrochanteric!fossa!of!femur!

Obturator!nerve! L3,!L4! Rotates!thigh!laterally!at!hip!joint!

! 4!

!

!!!!!

LATERAL+LEG+(PL,+PB)+MUSCLE+ ORIGIN+ INSERTION+ NERVE+SUPPLY+ ACTION+

Peroneus/Fibularis+Longus+

Lateral!surface!of!the!shaft!of!the!

Fibula!

Base!of!the!1st!First!Metetarsal!bone,!Medial!Cuneiform!

Superficial!Peroneal!Nerve!(L5,!S1,!S2)!

Plantar!Flexion!at!the!Ankle!joint,!Everts!foot!at!the!subtalar!and!transverse!Tarsal!joints,!Supports!Lateral!Longitudinal!and!Transverse!arches!of!

the!foot!!

Peroneus/Fibularis+Brevis+

+

Lateral!surface!of!the!shaft!of!the!

Fibula!

Tendons!of!the!lateral!four!Toes!

Plantar!flexion!of!foot!at!Ankle!Joint,!Everts!foot!at!the!subtalar!and!transverse!Tarsal!joints,!

Supports!Lateral!Longitudinal!arch!of!the!foot!

! 5!

!!!!!!!!!!!!!!!

!!!!!!

!!

!!!!!!!!!!

!!

ANTERIOR+LEG+(TA,+EDL,+PT,+EHL,+EDB)+MUSCLE+ ORIGIN+ INSERTION+ NERVE+SUPPLY+ ACTION+

Tibialis+Anterior+ Lateral!surface!of!shaft!of!tibia!and!interosseous!membrane!

Medial!cuneiform!and!base!of!

1st!metatarsal!bone!

Deep!peroneal!Nerve!(L4,!5)!

Extends!foot!and!Dorsiflexion!at!Ankle!joint,!

Inverts!foot!at!Subtalar!and!Transverse!Tarsal!Joints,!

Holds!the!Medial!Longitudinal!Arch!of!the!Foot!

Extensor+Digitorum+Longus+

Anterior!surface!of!shaft!of!fibula!

Extensor!expansion!of!lateral!

four!toes!

Deep!peroneal!Nerve!(L5;!S1)!

Extends!four!lateral!toes,!Extends!foot!at!Ankle!joint!

Peroneus/Fibularis+Tertius+

Anterior!surface!of!shaft!of!fibula!

Base!of!5th!metatarsal!bone!

Deep!peroneal!Nerve!(L5;!S1)!

Extends!foot!at!the!Ankle!joint,!Everts!foot!at!Subtalar!and!Transverse!

Tarsal!Joints!Extensor+Hallucis+

Longus+Anterior!surface!of!

shaft!of!fibula!Base!of!distal!phalanx!

of!great!toe!

Deep!peroneal!Nerve!(L5;!S1)!

Dorsiflexion!of!the!foot!at!Ankle!joint,!Extends!the!big!toe,!

Inverts!foot!at!Subtalar!and!Transverse!Tarsal!Joints!

Extensor+Digitorum+Brevis+(Snell,)but)can)

also)be)found)in)dorsum)of)foot))

Calcaneum! By!four!tendons!into!the!proximal!phalanx!of!big!toe!and!long!extensor!tendons!to!second,!third,!and!

fourth!toes!

Deep!peroneal!Nerve!(S1,!2)!

Extends!toes!

! 6!

!!!

!!!!!

!!!!!!

DORSUM+OF+THE+FOOT+(EDB,+EHB)+MUSCLE+ ORIGIN+ INSERTION+ NERVE+SUPPLY+ NERVE+ROOT+ ACTION+

Extensor+Digitorum+Brevis+

Anterior!part!of!upper!surface!of!the!

calcaneum!and!from!the!inferior!extensor!

retinaculum!!

By!four!tendons!into!the!proximal!phalanx!of!big!toe!and!long!extensor!tendons!to!2nd,!3rd,!and!4th!toes!

!

Deep!Peroneal!Nerve!

!

!S1,!S2!

!Extends!toes!

Extensor+Hallucis+Brevis+

Superolateral!surface!of!the!calcaneum!

!

Dorsum!of!the!base!of!proximal!phalanx!of!

the!big!toe!

!L4,!L5,!S1!

!Extends!big!toe!