How can we help?

You can also find more resources in our Help Center.

70 terms

External rotators, Abductors, Adductors, Hip Flexors, Hip extensors, Quadriceps

Origin/insertion, Function/actions, Nerve, Relationship
Psoas Major (attachments)
Origin: Anterior aspect of T12-L5
Insertion: Lesser trochanter
Psoas Major
Runs posterior to inguinal ligament to anterior aspect of the hip joint
Psoas major and iliacus (actions)
Hip flexion
Iliacus (attachments)
Origin: Superior iliac fossa, anterior sacrum
Insertion: Lesser trochanter
Psoas Major and Iliacus
common tendon on lesser trochanter
Femoral Nerve
Psoas Major, Iliacus, Sartorius, Rectus Femoris, VMO, Vastus Lateralis, Vastus Intermedius, Pectineus
Tensor Fascia Latae (TFL) (attachments)
Origin: lateral aspect of ASIS, anterior lateral lip of iliac crest
Insertion: IT band
IT band
Muscles: TFL, Glute Max
Insertion: Gerdy's Tubercle
TFL (actions)
Hip Flexion, internal rotation of hip, Abduction of hip, Knee extension
Sciatic Nerve
TFL, Glute Max, Glute Min, Glute Med, Piriformis, Gemelles Inferior and Superior, Obturator Internus, Quadratus Femoris, Biceps Femoris, Semimembranosus, Semitendinosus, Adductor Magnus
Glute Max (attachments)
Origin: medial to posterior line, dorsal sacrum, sacrotuberous ligament
Insertion: Gluteal tuberosity and IT band
Glute Max (actions)
Hip extension, external rotation of hip, Adducts and Abducts hip
Glute Med (attachments)
Origin: between posterior and anterior line and iliac crest
Insertion: lateral surface of greater trochanter
Glute Med (actions)
hip abduction, external and internal rotation of hip
Glute Min (attachments)
Origin: between anterior and inferior gluteal lines
Insertion: lateral anterior greater trochanter
Glute Min (actions)
abducts hip, internal rotation of hip
Glute Max
Most superficial Gluteal Muscle
Most superficial hip flexor and abductor
Glute Med
Deep to Glute max, superficial to Glute Min
Glute Min
Deepest Glute muscle
Piriformis (attachments)
Origin: Anterior sacrum and sacrotuberous ligament
Insertion: Superior greater trochanter
runs through GSN and superficial to Sciatic Nerve
Piriformis, Obturator internus, Gemellus Superior and Inferior (actions)
external rotation of hip, abduction only with hip flexion
Obturator Internus (attachments)
Origin: Pelvic surface of obturator foramen
Insertion: medial greater trochanter
Obturator Internus
Runs through LSN, Inferior to Gemellus Superior and superior to Gemellus Inferior
Gemellus Superior (attachments)
Origin: Ischial Spine
Insertion: medial greater trochanter
Obturator Internus, Gemellus Superior and Inferior
common tendon on medial greater trochanter
Gemellus Inferior (attachments)
Origin: Ischial tuberosity
Insertion: medial greater trochanter
Quadratus Femoris (attachments)
Origin: Ischial tuberosity
Insertion: Quadrate Femoris
Quadrate Femoris and Oberator Externus (actions)
external rotation of the hip
Obturator Externus (attachments)
Origin: anterior Obturator foramen
Insertion: intertrochanteric fossa
Obturator Externus
deepest external rotator
Obturator Nerve
Obturator Externus, Gracilis, Pectineus, Adductor Longus, Adductor Brevis, Adductor Magnus
Sartorius (attachments)
Origin: ASIS
Insertion: Pes Anserine
Superficial to Quads
Sartorius (actions)
hip flexion, hip abduction, hip external rotation, knee flexion and knee internal rotation
Rectus Femoris (attachments)
Origin: AIIS, rim above acetabulum
Insertion: patella tendon (tibial tuberosity)
Vastus Intermedius (attachments)
Origin: Anterior lateral proximal femur shaft, distal lateral lip of linea aspera
Insertion: patella tendon (tibial tuberosity)
Vastus Medialis (attachments)
origin: medial intertrochanteric line, spiral line, medial lip of linea aspera, medial supracondylar line
Insertion: patella tendon (tibial tuberosity)
Vastus Lateralis (attachments)
Origin: Lateral intertrochanteric line, anterior inferior borders of greater trochanter, lateral lip of gluteal tuberosity, lateral lip of linea aspera
Insertion: patella tendon (tibial tuberosity)
Rectus Femoris (actions)
knee extension and hip flexion
VMO, Vastus Lateralis and Intermedius (actions)
knee extension
Vastus Intermedius
Deepest Quad muscle
Vastus Lateralis
Superficial to Vastus Intermedius. Deep to IT Band.
Origin proximal to insertion of adductor longus and magnus.
Rectus Femoris
Most superficial Quad muscle
Biceps Femoris (attachments)
Origin: long head - ichial tuberosity, sacrotuberous ligament, short head - lateral lip of linea aspera, lateral supracondylar line
Insertion: lateral head of fibula and tibia
Biceps Femoris (actions)
Flexion of knee, extension of hip, lateral leg rotation
Biceps Femoris
proximally covered by Glute Max. Short head is covered by IT band. Long head is superficial to Semimembranosus and Adductor Magnus. Lateral to Semitendinosus.
Semitendinosus (attachments)
Origin: Ischial tuberosity
Insertion: Pes anserine
Semitendinosus (actions)
Flexion of knee, extension of hip, medial knee rotation
Semitendinosus and Biceps Femoris
common tendon from ischial tuberosity
Superficial to Semimembranosus. Medial to Biceps Femoris.
Semimembranosus (attachments)
Origin: ischial tuberosity
Insertion: posterior aspect of medial tibial condyle
Semimembranosus (actions)
Flexion of knee, extension of hip
Deep to Semitendinosus and Biceps Femoris. Posterior to Adductor Magnus.
Gracilis (attachments)
Origin: Body of pubis and pubis ramus
Insertion: Pes anserine
Gracilis (actions)
Flexion of knee, medial rotation of knee and hip adduction
most medial adductor muscle. Superficial to Adductor Magnus.
anterior to Adductor Magnus and Adductor Brevis. lateral to Adductor Longus. medial to Iliopsoas.
Pectineus (attachments)
Origin: pectineal line of pubis
Insertion: Pectineal line of femur
Pectinus (actions)
Hip flexion and adduction
Adductor Longus (attachments)
Origin: body of pubis
Insertion: medial lip of linea aspera
Adductor Longus and Adductor Brevis (actions)
Hip adduction
Adductor Longus
Superficial to Adductor Brevis and Magnus. Medial to Pectineus.
Adductor Brevis (attachments)
Origin: body of pubis
Insertion: spiral line, medial lip of linea aspera
Adductor Brevis
Deep to Adductor Longus. Superficial Adductor Magnus.
Adductor Magnus (attachments)
Origin: anterior fibers - inferior pubic ramus, middle fibers - ischial ramus, posterior fibers - ischial tuberosity
Insertion: anterior fibers - medial gluteal tuberosity, middle fibers - medial lip of linea aspera and medial supracondylar line, posterior fibers - adductor tubercle
Adductor Magnus (actions)
hip adduction and extension
Adductor Magnus
Posterior and deep to Adductor Longus, Brevis and pectineus. Anterior and superficial to Semitendinosus, Semimembranosus, Biceps Femoris and Glute Max. Lateral to Gracilis. Inferior to Quadratus Femoris and Obturatot Externus.