Thigh and hip muscles

Thigh and Pelvic Muscles

"Obstacles are those frightful things you see when you take your eyes off your goal." - Henry Ford (1863-1947)

Ok Here’s a Joke…

Q. Why are fish easy to weigh?

A. They have their own scales.

Q. What did the fish say when it ran into the concrete wall?

Goals and Objectives

To identify vast majority of leg and pelvic muscles to class

For students to be able to identify muscles or know where they are at end of lesson

For students to be able to understand function of muscles in this powerpoint

To be able to link body movements with certain muscles for strength training, injury recognition and for just better understanding of human movement and function

Muscles of Anterior thigh.

SartoriusRectus FemorisVastus LateralisVastus IntermediusVastus Medialis Oblique (VMO)Psoas Major/MinorIliacus

Anterior and medial thigh.

Sartorius

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Sartorius

Origin Anterior superior iliac spineInsertion Superior aspect of the

medial surface of the tibial shaft near the tibial tuberosity

Action Flexes and laterally rotates the hip joint and flexes the knee

Rectus Femoris

Origin Straight head from anterior inferior iliac spine; reflected head from groove just above acetabulum

Insertion Base of patella to form the more central portion of the quadriceps femoris tendon

Action Hip Flexion and maybe some Knee extension.

Vastus Lateralis

Note all Three Quad musclesHere.

Vastus Lateralis

Origin Superior portion of intertrochanteric line, anterior and inferior borders of greater trochanter, superior portion of lateral lip of linea aspera, and lateral portion of gluteal tuberosity of femur

Insertion Lateral base and border of patella; also forms the lateral patellar retinaculum and lateral side of quadriceps femoris tendon

Action Extends the knee

Vastus Intermedius

Origin Superior 2/3 of anterior and lateral surfaces of femur; also from lateral intermuscular septum of thigh

Insertion Lateral border of patella; also forms the deep portion of the quadriceps tendon

Vastus Medialis(VMO)

Note Oblique shape

Vastus Medialis (VMO)

Origin Inferior portion of intertrochanteric line, spiral line, medial lip of linea aspera, superior part of medial supracondylar ridge of femur, and medial intermuscular septum

Insertion Medial base and border of patella; also forms the medial patellar retinaculum and medial side of quadriceps femoris tendon

Psoas Major/Minor

Origin Anterior surfaces and lower borders of transverse processes of L1 - L5 and bodies and discs of T12 - L5

Insertion Lesser trochanterAction Flex the torso and thigh with

respect to each other

Iliacus

Origin Upper 2/3 of iliac fossa of ilium, internal lip of iliac crest, lateral aspect of sacrum, ventral sacroiliac ligament, and lower portion of iliolumbar ligament

Insertion Lesser trochanterAction Flex the torso and thigh with

respect to each other

Iliacus

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.Iliacus

Take Two……..

Why don't skeletons like parties?

They have no body to dance with.

Why didn't the skeleton cross the road?

He didn't have the guts.

Anterior-Medial, to more Medial Gracilis Adductor Brevis Adductor Magnus Adductor Longus PectineusAnterior Hip (Flexors / rotators)

– Psoas Major / Minor– Iliopsoas– Iliacus

are needed to see this picture.

Deep medial / Medial muscles

GracilisAdductor BrevisAdductor MagnusAdductor LongusPectineus

Gracilis

Pectineus--->

Gracilis---->

Gracilis

Origin Inferior margin of pubic symphysis, inferior ramus of pubis, and adjacent ramus of ischium

Insertion Medial surface of tibial shaft, just posterior to sartorius

Action Flexes the knee, adducts the thigh, and helps to medially rotate the tibia on the femur

Adductor Brevis and Longus

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<---Brevis

Longus--->

Adductor Brevis and Longus

Origin Anterior surface of body of pubis, just lateral to pubic symphysis

Insertion Middle third of linea aspera, between the more medial adductor magnus and brevis insertions and the more lateral origin of the vastus medialis

Action Adducts and flexes the thigh, and helps to laterally rotate the hip joint

***what other muscle is similar???? Hint:

“LONG”

Adductor MagnusQuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.

Adductor Magnus

Origin Inferior pubic ramus, ischial ramus, and inferolateral area of ischial tuberosity

Insertion Gluteal tuberosity of femur, medial lip of linea aspera, medial supracondylar ridge, and adductor tubercle

Action Powerful thigh adductor; superior horizontal fibers also help flex the thigh, while vertical fibers help extend the thigh

QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.

magnus Brevis Longus

ADDUCTORS

Pectineus

Origin-Pecten pubis and pectineal surface of the pubis

Insertion-Pectineal line of femurAction-Adducts the thigh and flexes the

hip joint

ADD of hip and Flex of hip

Pectineus

are needed to see this picture.Quick review

Quick Break…..

Lateral Muscles

IT-band (Iliotibial)Tensor Fasciae Latae

IT-band (Iliotibial)

iliotibial band is a longitudinal fibrous reinforcement of the Fascia lata.

It is attached to the midpoint of the external lip of the Iliac crest and to the lateral condyle of the tibia.

The part of the iliotibial band which lies beneath the Tensor fasciæ latæ is prolonged upward to join the lateral part of the capsule of the hip-joint.

IT-band (Iliotibial)

White Band

Tensor Fascia Lata

Origin Anterior superior iliac spine, outer lip of anterior iliac crest and fascia lata

Insertion Iliotibial bandAction Helps stabilize and steady the

hip and knee joints by putting tension on the iliotibial band of fascia

Posterior Muscles

Gluteus maximus Gluteus medius Gluteus minimus

Deeper “Butt” muscles;PiriformisGamelius Superior and InferiorObturator Internus and ExturnusQuadratus Femoris

Take two……….

Power House “The Glutes”

Gluteus MaximusGluteus MediusGluteus Minimus

Gluteus Maximus

Origin-Posterior aspect of dorsal ilium posterior to posterior gluteal line, posterior superior iliac crest, posterior inferior aspect of sacrum and coccyx, and sacrotuberous ligament

Insertion-Primarily in fascia lata at the iliotibial band; also into the gluteal tuberosity on posterior femoral surface

Action-Major extensor of hip joint, assists in laterally rotating the thigh; upper and middle third section of the muscle are abductors

*Hip Extensor and ER of Hip

Gluteus Max

Gluteus Medius

Origin-Dorsal ilium inferior to iliac crestInsertion-Lateral and superior surfaces

of greater trochanterAction-Major abductor of thigh; anterior

fibers help to rotate hip medially; posterior fibers help to rotate hip laterally

*ABD of hip and IR of hip

Gluteus Med

Gluteus Minimus

Origin-Dorsal ilium between inferior and anterior gluteal lines; also from edge of greater sciatic notch

Insertion-Anterior surface of greater trochanter

Action-Abducts and medially rotates the hip joint

*ABD of hip and IR of hip

Gluteus Mini

Deep “Butt” Muscles

Inferior Gemellus QuickTime™ and a

TIFF (Uncompressed) decompressorare needed to see this picture.

Inferior Gemellus

Origin Posterior portions of ischial tuberosity and lateral obturator ring

Insertion Medial surface of greater trochanter of femur, in common with obturator internus

Action Rotates the thigh laterally; also helps abduct the flexed thigh

Obturator Internus / Externus

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are needed to see this picture.Externus

Obturator internus

Origin Internal surface of obturator membrane and posterior bony margins of obturator foramen

Insertion Medial surface of greater trochanter of femur, in common with superior and inferior gemelli

Action Rotates the thigh laterally; also helps abductabduct the thigh when it is flexed

Obturator Externus

Origin External surface of obturator membrane and anterior bony margins of obturator foramen

Insertion Posteromedial surface of greater trochanter of femur

Action Rotates the thigh laterally; also helps adductadduct thigh

Piriformis

Origin Anterior surface of lateral process of sacrum and gluteal surface of ilium at the margin of the greater sciatic notch

Insertion Superior border of greater trochanter

Action Lateral rotator of the hip joint; also helps abduct the hip if it is flexed

Quadratus Femoris

<--Here

Quadratus Femoris

Origin Lateral margin of obturator ring above ischial tuberosity

Insertion Quadrate tubercle and adjacent bone of intertrochanteric crest of proximal posterior femur

Action Rotates the hip laterally; also helps adduct the hip

Getting cold…

“Hammies”QuickTime™ and a

TIFF (Uncompressed) decompressorare needed to see this picture.

Hamstrings

SemitendinosusSemimembranosusBiceps Femoris

Biceps Femoris

Long HeadShort Head

Bicept femoris

Origin posterior portion of the ischial tuberosity

Insertion Primarily on fibular head; also on lateral collateral ligament and lateral tibial condyle

Action Flexes the knee, and also rotates the tibia laterally; long head also extends the hip joint

Semitendinosus

Origin From common tendon with long head of biceps femoris from superior medial quadrant of the posterior portion of the ischial tuberosity

Insertion Superior aspect of medial portion of tibial shaft

Action Extends the thigh and flexes the knee, and also rotates the tibia medially, especially when the knee is flexed

Semimembranosus

Origin Superior lateral quadrant of the ischial tuberosity

Insertion Posterior surface of the medial tibial condyle

Action Extends the thigh, flexes the knee, and also rotates the tibia medially, especially when the knee is flexed

We… Are… Doneee….

Back to Work!!

Thigh and hip muscles

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