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Iliopsoas (Psoas major & Iliacus) Action –flexion at hip –flexion at lumbar intervertebral joints (psoas major only)

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Presentation on theme: "Iliopsoas (Psoas major & Iliacus) Action –flexion at hip –flexion at lumbar intervertebral joints (psoas major only)"— Presentation transcript:

1 Iliopsoas (Psoas major & Iliacus) Action –flexion at hip –flexion at lumbar intervertebral joints (psoas major only)

2 Gluteus Maximus Largest Actions –Extends and laterally rotates at hip joint

3 Gluteus Medius 2 nd Largest Actions –Abduction and medial rotation at hip joint

4 Gluteus Minimus Smallest Actions –abducts and medially rotates SAME AS MEDIUS

5 Tensor Fasciae Latae (iliotibial or IT band) Action –flexion and medial rotation at hip –lateral support of knee

6 Piriformis Origin –sacrum Insertion –femur (greater Trochanter) Action –lateral rotation and abduction at hip joint

7 Quadratus Femoris Action –lateral rotation at the hip joint

8 Adductor Magnus Origin –pubis & ischium Insertion –femur (linea aspera) Action –altogether: adduction at hip joint –superior portion: flexion and medial rotation at hip –inferior part: extension and lateral rotation at hip

9 Adductor Longus Origin –pubis Insertion –femur (linea aspera) Action –adduction, flexion, and medial rotation at hip same for adductor brevis

10 Adductor Brevis Origin –pubis Insertion –femur (linea aspera) Action –adduction, flexion, and medial rotation at hip same for adductor longus

11 Pectineus Origin –Pubis Insertion –Femur Action –adducts, flexes, and medially rotates at hip

12 Gracilis Origin –pubis Insertion –tibia Action –flexes at knee, adducts and medially rotates at hip

13 Rectus Femoris Origin –anterior inferior iliac spine Insertion –tibial tuberosity via patellar ligament Action –extends at knee, flexes at hip part of quadriceps femoris muscle group of anterior thigh

14 Vastus Lateralis Origin –femur Insertion –tibial tuberosity via patellar ligament Action –extension at knee joint part of quadriceps femoris muscle group of anterior thigh

15 Vastus Medialis Origin –Femur Insertion –tibial tuberosity via patellar ligament Action –extension at knee joint part of quadriceps femoris muscle group of anterior thigh

16 Vastus Intermedius Origin –femur Insertion –tibial tuberosity via patellar ligament Action –extension at knee joint part of quadriceps femoris muscle group of anterior thigh

17 Sartorius Origin –Anterior superior iliac spine Insertion –tibia Action –flexion at knee –flexion and lateral rotation at hip

18 Biceps Femoris Origins –Long Head: ischial tuberosity –Short Head: femur Insertion –Long Head: tibia –Short Head: head of fibula Action –flexes knee, extends and laterally rotates hip Part of Hamstring Muscle group (posterior thigh)

19 Semimembranosus Origin –ischial tuberosity Insertion –medial tibia Action –flexion at knee, extension and medial rotation at hip Part of Hamstring Muscle group (posterior thigh)

20 Semitendinosus Origin –Ischial Tuberosity Insertion –medial tibia Action –flexion at knee, extension and medial rotation at hip Part of Hamstring Muscle group (posterior thigh)

21 Tibialis Anterior Action –dorsiflexion (flexion at ankle) –inversion of foot

22 Peroneals peroneus (fibularis) longus peroneus (fibularis) brevis Actions –eversion of foot and plantar flexion (extension at ankle)

23 Gastrocnemius Origin –femur Insertion –calcaneus via achille’s tendon Action –plantar flexion (extension at ankle), inversion of foot, flexion of knee

24 Soleus Origin –fibula & tibia Insertion –calcaneus via achille’s tendon Action –plantar flexion (extension of ankle)

25 Popliteus Action –medial rotation of tibia (or lateral rotation of femur) –flexion at knee

26 Extensor Digitorum Longus Action –flexion at joints of toes 2-5

27 Extensor Hallucis Longus Action –Flexion at great toe


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