Anatomy Wokrshop Pelvis hip and femur myology 1

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Anatomy Wokrshop Pelvis, hip and femur (myology 1) 분당서울대학교병원 정형외과 성기혁

Anatomy Wokrshop Pelvis, hip and femur (myology 1) 분당서울대학교병원 정형외과 성기혁

Anterior muscles of pelvis

Anterior muscles of pelvis

Psoas major Origin : T 12 -L 5 vertebra Insertion : lesser trochanter Action

Psoas major Origin : T 12 -L 5 vertebra Insertion : lesser trochanter Action : powerful hip flexion Innervation: femoral N.

Psoas minor Origin : T 12 & L 1 vertebra Insertion : pectineal line

Psoas minor Origin : T 12 & L 1 vertebra Insertion : pectineal line Action : weak flexion of trunk

Iliacus Origin : iliac fossa Insertion : lesser trochanter Action : powerful hip flexion

Iliacus Origin : iliac fossa Insertion : lesser trochanter Action : powerful hip flexion Innervation: Femoral N.

Gluteal muscles

Gluteal muscles

Gluteus maximus Origin : ilium & dorsal sacrum Insertion 1. gluteal tuberosity 2. iliotibial

Gluteus maximus Origin : ilium & dorsal sacrum Insertion 1. gluteal tuberosity 2. iliotibial band Action 1. powerful extension 2. ER of hip Innervation: inferior gluteal N.

Gluteus medius Origin: ilium between anterior & posterior gluteal lines Insertion: greater trochanter Action:

Gluteus medius Origin: ilium between anterior & posterior gluteal lines Insertion: greater trochanter Action: 1. powerful abduction 2. IR of hip 3. Balancing during walking Innervation : superior gluteal N.

Gluteus minimus Origin: ilium between anterior & inferior gluteal lines Insertion: anterior greater trochanter

Gluteus minimus Origin: ilium between anterior & inferior gluteal lines Insertion: anterior greater trochanter Action: 1. abduction & IR of hip 2. Assist gluteus medius during walking

Trendelenburg sign

Trendelenburg sign

Piriformis Origin: anterior sacrum Insertion: superior greater trochanter Action: 1. hip ER 2. hip

Piriformis Origin: anterior sacrum Insertion: superior greater trochanter Action: 1. hip ER 2. hip abduction during flexion

Obturator internus Origin 1. ischiopubic rami 2. obturator membrane Insertion: medial greater trochanter Action:

Obturator internus Origin 1. ischiopubic rami 2. obturator membrane Insertion: medial greater trochanter Action: 1. hip ER 2. hip abduction during flexion

Superior & Inferior gemellus Origin: ischial spine(sup. ) ischial tuberosity(inf. ) Insertion: medial greater

Superior & Inferior gemellus Origin: ischial spine(sup. ) ischial tuberosity(inf. ) Insertion: medial greater trochanter Action: 1. hip ER 2. hip abduction during flexion

Quadratus femoris Origin: ischial tuberosity Insertion: intertrochanteric crest Action: hip ER

Quadratus femoris Origin: ischial tuberosity Insertion: intertrochanteric crest Action: hip ER

Posterior femoral muscles (Hamstrings)

Posterior femoral muscles (Hamstrings)

Biceps femoris(long head) Origin: ischial tuberosity Insertion: head of fibula Action: 1. hip extension

Biceps femoris(long head) Origin: ischial tuberosity Insertion: head of fibula Action: 1. hip extension 2. knee flexion & ER Innervation: tibial division of sciatic N.

Biceps femoris(short head) Origin: 1. linea aspera, 2. supracondylar line Insertion: fibula, lateral tibia

Biceps femoris(short head) Origin: 1. linea aspera, 2. supracondylar line Insertion: fibula, lateral tibia Action: knee flexion & ER

Semitendinosus Origin: ischial tuberosity Insertion: proximal medial tibia Action: 1. hip extension 2. knee

Semitendinosus Origin: ischial tuberosity Insertion: proximal medial tibia Action: 1. hip extension 2. knee flexion & IR Innervation: tibial division of sciatic N.

Semimembranosus Origin: ischial tuberosity Insertion: posterior medial tibial condyle Action: 1. hip extension 2.

Semimembranosus Origin: ischial tuberosity Insertion: posterior medial tibial condyle Action: 1. hip extension 2. knee flexion & IR Innervation: Tibial division of sciatic N.

Psoas & iliacus: hip flexion Gluteus medius & minimus: hip abduction & IR Gluteus

Psoas & iliacus: hip flexion Gluteus medius & minimus: hip abduction & IR Gluteus maximus & hamstrings: hip extension Piriformis & short rotators: hip ER

Thank you !!

Thank you !!

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