Human Movements
Osteology and Myology: Part II
Jehee Lee Movement Research Lab Seoul National University Lower extremity 1. Pelvis (골반)
2. Thigh, Femur (대퇴골, 허벅지)
3. Shin, Tibia and fibula (하퇴골, 장딴지)
• Femur – Proximal extremity – Shaft (Body) – Distal extremity Femur Femur Femur Hip flexor: Psoas Major
Origin : T12-L5 vertebra
Insertion : lesser trochanter
Action : powerful hip flexion Hip flexor: Iliacus
Origin : iliac fossa
Insertion : lesser trochanter
Action : powerful hip flexion Hip extensor: Gluteal Maximus
Origin : ilium & dorsal sacrum
Insertion : gluteal tuberosity iliotibial band
Action : powerful hip extension hip external rotation Hip extensor: Gluteal Medius
Origin : ilium between ant & post gluteal lines
Insertion : greater trochanter
Action : powerful abduction hip external rotation balancing during walking Hip extensor: Gluteal Minimus
Origin : ilium between ant & inf gluteal lines
Insertion : ant greater trochanter
Action : abduction hip internal rotation assist gluteus medium during walking
Quadriceps Femoris Rectus Femoris Rectus Femoris
Origin : AIIS superior rim of acetabulum
Insertion : patella, tibial tubercle
Action : hip flexion knee extension Vastus lateralis Vastus lateralis
Origin : greater trochanter lateral linea aspera
Insertion : lateral patella tibial tubercle
Action : knee extension Vastus Medialis Vastus medialis
Origin : intertrochanteric line medial linea aspera
Insertion : medial patella tibial tubercle
Action : knee extension Vastus intermedius Vastus intermedias
Origin : proximal femoral shaft
Insertion : patella tibial tubercle
Action : knee extension Pectineus Pectineus
Origin : pectineal line of pubis
Insertion : pectineal line of femur
Action : hip adduction and flexion Adductor longus Adductor longus
Origin : body of pubis (inferior)
Insertion : linea aspera
Action : hip adduction Adductor longus Adductor longus
Origin : body of pubis (inferior)
Insertion : linea aspera
Action : hip adduction Gracilis Gracilis
Origin : body and inferior pubic ramus
Insertion : proximal medial tibia (pes anserinus)
Action : hip adduction knee flexion, IR Obturator externus Obturator externus
Origin : Ischiopubic rami obturator membrane
Insertion : trochanteric fossa
Action : hip external rotation Adductor brevis Adductor brevis
Origin : body and inferior of pubic ramus
Insertion : pectineal line, upper linea aspera
Action : hip adduction, flexion, IR Adductor magnus Adductor magnus
Origin : ischiopubic ramus ischial tuberosity
Insertion : linea aspera adductor tubercle
Action : powerful hip adduction (upper portion) flex, ER (lower portion) ext, IR Tensor fascia lata Tensor fascia lata
Origin : ant part of iliac crest ASIS (ant sup iliac spine)
Insertion : iliotibial tract
Action : hip abduction, flexion Sartorius
Origin : ASIS (ant sup iliac spine)
Insertion : proximal medial tibia (pes anserinus)
Action : hip flexion, ER knee weak IR at flexed knee Hamstring semimembranosus semitendinosus biceps femoris M T B medial lateral Hamstring: semitendonisus
Origin : ischial tuberosity
Insertion : proximal medial tibia (pes anserinus)
Action : hip extension knee flexion, IR Hamstring: semimembranosus
Origin : ischial tuberosity
Insertion : posterior medial tibial condyle
Action : hip extension knee flexion, IR Hamstring: biceps femoris (long head)
Origin : ischial tuberosity
Insertion : head of fibula
Action : hip extension knee flexion, ER Hamstring: biceps femoris (short head)
Origin : linea aspera supracondylar line
Insertion : fibula lateral tibia
Action : knee flexion, ER