Muscles that act at the HIP

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簧联茧伏
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1 Muscles at the HIP

2 Actions at the Hip Flexion Extension Medial (internal) rotation Lateral (external) rotation Abduction Adduction Circumduction

4 Abduction and Adduction

5 Medial and Lateral rotation

6 Muscles that produce flexion at the hip Iliopsoas (Iliacus and Psoas major) Sartorius* Rectus femoris* Tensor fasciae latae* Pectinius (assists) *These muscles are two-joint muscles, also acting at the knee

7 Iliopsoas: Iliacus and Psoas Major Origin: Iliacus: Illium Psoas major: Lumbar vertebrae and sacrum Insertion: Lesser trochanter of the femur and just below Actions: Flexion at the hip External or lateral rotation at the hip

8 Iliacus muscle

9 Psoas major

10 Origin: Anterior superior iliac spine Insertion: Anterior-medial aspect of the tibia Actions: Flexion at the hip External (lateral) rotation at the hip Flexion at the knee Sartorius

12 Rectus Femoris Origin: Anterior inferior iliac spine (ilium) Insertion: Patella, patellar tendon, tibial tuberosity Actions: Flexion at the hip Extension at the knee

13 Rectus Femoris

14 Tensor fascia latae Origin: Iliac crest (Illium) Insertion: Iliotibial tract Actions: Flexion of the hip Abduction of the hip Slight internal rotation at the hip

15 Tensor Fascia Latae

16 Muscles that produce Extension at Gluteus maximus Semitendinosus* Semimembranosis* Biceps femoris* the Hip *These muscles are two-joint muscles that also act at the knee

17 Gluteus maximus Origin: Posterior illium, sacrum, and coccyx Insertion: Femur, ITB Actions: Extension at the hip External (lateral) rotation at the hip

19 Origin: Ishial tuberosity Insertion: Anterior/medial aspect of tibia Actions: Extension at the hip Internal/medial rotation at the hip Flexion at the knee Internal/medial rotation of flexed knee Semitendinosus

21 Semimembranosus Origin: Ishial tuberosity Insertion: Posterior/medial aspect of tibia Actions: Extension at the hip Internal/medial rotation at the hip Flexion at the knee Internal/medial rotation of flexed knee

23 Origins: Ishial tuberosity Femur (linea aspera) Insertion: Lateral condyle of tibia and head of fibula Actions: Extension at the hip External/lateral rotation at the hip Flexion at the knee External/lateral rotation of flexed knee Biceps femoris

26 Muscles that Abduct at the hip Tensor fascia latae Gluteus medius Gluteus minimus

27 Origin: Lateral surface of ilium Insertion: Greater trochanter of femur Actions: Abduction at the hip External/lateral rotation (posterior) at hip Internal/medial rotation (anterior) at hip Gluteus medius

29 Gluteus minimus Origin: Lateral surface of ilium Insertion: Greater trochanter of femur Actions: Abduction at the hip Internal/medial rotation at the hip

31 Muscles that Adduct at the Hip Adductor magnus Adductor longus Adductor brevis Gracilis* Pectineus * a two-joint muscle that also acts at the knee*

32 Adductor Magnus Origin: Pubis and ishium Insertion: Linea aspera of the femur Actions: Adduction at the hip External/lateral rotation at the hip

34 Adductor Longus Origin: Anterior aspect of Pubis Insertion: Linea aspera of femur Actions: Adduction at the hip Assists with flexion at the hip (if combined with adduction)

36 Adductor Brevis Origin: Pubis (inferior ramus) Insertion: Linea aspera of the femur Actions: Adduction at the hip External/lateral rotation at the hip

38 Origin: Pubis (inferior ramus) Insertion: Anterior/medial aspect of the tibia Actions: Adduction at the hip Internal/medial rotation at the hip Flexion at the knee Gracilis

40 Origin: Pubis (superior ramus) Insertion: Posterior femur Actions: Adduction at the hip Flexion at the hip Internal/medial rotation at the hip Pectinius

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