Hip LegFoot

Muscles of the Lower ExtremityInferior Half

Hip

Gluteus MaximusGluteus Medius

Gluteus MaximusFunction: Extends and

rotates the thigh

Origin: Pelvis and sacrum

Insertion: Femur (posterior)

Gluteus MediusFunction: Extends

and rotates the thighSits above the

gluteus maximusOrigin: pelvis

(posterior) Insertion: top of

femur

Upper LegSartoriusQuadriceps MusclesHamstring Muscles

SartoriusFunction: flexes

lower legLongest muscle in the

body (anterior) Origin: pelvisInsertion: medial

side of tibia

Muscle you use to: - Play “Hacky Sack” - Cross your legs –

“Man style”

Quadriceps MusclesQuadriceps

4 muscles make up the “Quad” on the anterior side of legVastus MedialisVastus IntermediusVastis LateralisRectus femoris

Function: Extends the leg & knee and flexes of the hip & thigh

Quadriceps (Quads)Origin: Lower part of the pelvis and top of

the femurInsertion: patella (knee cap)

Vastus Medialis (VMO)Located on the inside of your thigh

Vastus IntermediusLocated next to the vastus lateralisVastus Lateralis

Located on the outside of your thighRectus Femoris

Located next to the sartoriusGoes over all the vastus muscles and sits

on top

Hamstring Muscles3 muscles make up the hamstring

Biceps FemorisSemimembranosusSemitendinosus

They are located on the posterior side of the legFunction: Flexes the knee and extends the thigh

Hamstring MusclesOrigin: Back of PelvisInsertion: Tibia (medial & lateral)

Biceps FemorisLateral (insertion)hamstring muscle

SemimembranosusMost Medial (insertion)hamstring muscle

SemitendinosusMedial (insertion)hamstring muscle

Lower Leg

Tibialis AnteriorExtensor Digitorum LongusPeroneus (Fibularis)Longus Peroneus (Fibularis)BrevisGastrocnemius (Calf)Soleus (Calf)Flexor Digitorum Longus

Tibialis AnteriorFunction: flexes

the foot muscle on your shin boneOrigin: Tibia Insertion:

Metatarsal

Extensor Digitorum LongusFunction: Moves

your toes/digits 2-5Origin: top of tibia

and fibulaInsertion:

Phalanges (2-5) Located next to

tibialis anterior on the outside of the leg

Peroneus LongusFunction: Flexes

the foot; arch support muscle (side of leg)Origin: FibulaInsertion: Big toe

(1st metatarsal)

Peroneus BrevisFunction: Flexes

foot; arch support muscleOrigin: shaft of

fibulaInsertion: your little

toe (outside lower leg)

GastrocnemiusFunction: (posterior)

bends the knee; points the toes or plants the foot downOrigin: bottom of the

femurInsertion: heel bone

(calcaneus)

SoleusFunction:

(posterior) extends or depresses the foot when standing or walking; points the foot downOrigin: tibia and

fibulaInsertion: heel bone

(calcaneus)

Flexor Digitorum LongusFunction Flexes

Second Through Fifth Toes, Inverts Foot, Weak Plantar Flexion Of Ankle

Origin Middle Posterior Surface Of Tibia

Insertion Distal Phalanges Of Second Through Fifth Toes