Muscles at the HIP
Actions at the Hip Flexion Extension Medial (internal) rotation Lateral (external) rotation Abduction Adduction Circumduction
Abduction and Adduction
Medial and Lateral rotation
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
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
Iliacus muscle
Psoas major
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
Rectus Femoris Origin: Anterior inferior iliac spine (ilium) Insertion: Patella, patellar tendon, tibial tuberosity Actions: Flexion at the hip Extension at the knee
Rectus Femoris
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
Tensor Fascia Latae
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
Gluteus maximus Origin: Posterior illium, sacrum, and coccyx Insertion: Femur, ITB Actions: Extension at the hip External (lateral) rotation at the hip
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
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
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
Muscles that Abduct at the hip Tensor fascia latae Gluteus medius Gluteus minimus
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
Gluteus minimus Origin: Lateral surface of ilium Insertion: Greater trochanter of femur Actions: Abduction at the hip Internal/medial rotation at the hip
Muscles that Adduct at the Hip Adductor magnus Adductor longus Adductor brevis Gracilis* Pectineus * a two-joint muscle that also acts at the knee*
Adductor Magnus Origin: Pubis and ishium Insertion: Linea aspera of the femur Actions: Adduction at the hip External/lateral rotation at the hip
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)
Adductor Brevis Origin: Pubis (inferior ramus) Insertion: Linea aspera of the femur Actions: Adduction at the hip External/lateral rotation at the hip
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
Origin: Pubis (superior ramus) Insertion: Posterior femur Actions: Adduction at the hip Flexion at the hip Internal/medial rotation at the hip Pectinius