Mind map
Thigh Muscles
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Thigh Muscles
Posterior Thigh
- Semitendinosis
- Origin: Ischial Tuberosity
- Insertion: Medial surface of superior Tibia
- Action: Extend thigh, flex leg and rotates medialy with flexed knee, extends trunk with extended thighs and legs
- Nerve: tibial division or sciatic nerve part of tibia (L5, S1, S2)
- Action: Extend thigh, flex leg and rotates medialy with flexed knee, extends trunk with extended thighs and legs
- Insertion: Medial surface of superior Tibia
- Origin: Ischial Tuberosity
- Semimembranosis
- Origin: Ischial Tuberosity
- Insertion: posterior part of medial condyle of tibia
- Action: Extend thigh, flex leg and rotates medialy with flexed knee, extends trunk with extended thighs and legs
- Nerve: tibial division or sciatic nerve part of tibia (L5, S1, S2)
- Action: Extend thigh, flex leg and rotates medialy with flexed knee, extends trunk with extended thighs and legs
- Insertion: posterior part of medial condyle of tibia
- Origin: Ischial Tuberosity
- Biceps femoris
- Origin: Long head- ischial tuberosity, Shorty head- linea aspera and later supracondylar line of femur
- Insertion: lateral side of head of fibula
- Action: flexes leg and rotates medially with flexed knee, extends thigh
- Nerve: long head- tibial division of sciatic nerve (L5, S1, S2) short head- common fibular division of sciatic nerve (L5, S1, S2)
- Action: flexes leg and rotates medially with flexed knee, extends thigh
- Insertion: lateral side of head of fibula
- Origin: Long head- ischial tuberosity, Shorty head- linea aspera and later supracondylar line of femur
- Semitendinosis
Anterior Thigh
- Hip Flexors
- Pectineus
- Origin: superior rams of pubis
- Insertion: pectineal line of femur, just inferior to lesser trochanter
- Action: adducts and flexes thigh; assists with medial rotation of thigh
- Nerve: femoral nerve (L2, L3) may receive branch from obturator nerve
- Action: adducts and flexes thigh; assists with medial rotation of thigh
- Insertion: pectineal line of femur, just inferior to lesser trochanter
- Origin: superior rams of pubis
- Sartorius
- Origin: ASIS and superior part of notch inferior to it
- Insertion: superior part of medial surface of tibia
- Action: flexes, abducts, and laterally rotates thigh at hip joint; flexes leg at knee joint (medially rotating leg when knee is flexed)
- Nerve: Femoral nerve (L2, L3)
- Action: flexes, abducts, and laterally rotates thigh at hip joint; flexes leg at knee joint (medially rotating leg when knee is flexed)
- Insertion: superior part of medial surface of tibia
- Origin: ASIS and superior part of notch inferior to it
- Iliopsoas
- Psoas Major
- Origin: sides of T12-L5 vertebra and disks between them; transverse processes of all lumbar vertebra
- Insertion: lesser trochanter of femur
- Action: act conjointly in flexing thigh at hip joint and in stabilizing the joint
- Nerve: Anterior rami (L1, L2, L3)
- Action: act conjointly in flexing thigh at hip joint and in stabilizing the joint
- Insertion: lesser trochanter of femur
- Origin: sides of T12-L5 vertebra and disks between them; transverse processes of all lumbar vertebra
- Psoas Minor
- Origin:Sides of T12-L1 vertebrae and IV disks
- Insertion: pectineal line, iliopectineal eminence via iliopectineal arch
- Action: acts conjointly in flexing thigh and hip joint and in stabilizing the joint
- Nerve: anterior rami of lumbar nerves (L1, L2)
- Action: acts conjointly in flexing thigh and hip joint and in stabilizing the joint
- Insertion: pectineal line, iliopectineal eminence via iliopectineal arch
- Origin:Sides of T12-L1 vertebrae and IV disks
- Iliacus
- Origin: iliac crest, iliac fossa, ala of sacrum, and anterior sacroiliac ligaments
- Insertion: tendon of Psoas Major, lesser trochanter, and femur distal to it
- Action: acts conjointly in flexing thigh and hip joint and in stabilizing the joint
- Nerve: femoral nerve (L2, L3)
- Action: acts conjointly in flexing thigh and hip joint and in stabilizing the joint
- Insertion: tendon of Psoas Major, lesser trochanter, and femur distal to it
- Origin: iliac crest, iliac fossa, ala of sacrum, and anterior sacroiliac ligaments
- Psoas Major
- Pectineus
- Knee Extensors
- Rectus Femoris
- Origin: AIIS and ilium superior to acetabulum
- Insertion: via common tendonus (quadriceps tendon) and independent attachments to base of patella; indirectly via patellar ligament
- Action: extend leg at knee joint; also steadies hip joint and helps iliopsoas filex thigh
- Nerve: Femoral nerve (L2, L3, L4)
- Action: extend leg at knee joint; also steadies hip joint and helps iliopsoas filex thigh
- Insertion: via common tendonus (quadriceps tendon) and independent attachments to base of patella; indirectly via patellar ligament
- Origin: AIIS and ilium superior to acetabulum
- Vastus Lateralis
- Origin: greater trochanter and lateral lip of linea aspera of femur
- Insertion: via common tendonus (quadriceps tendon) and independent attachments to base of patella; indirectly via patellar ligament; also to tibia and patella via aponeuroses (patellar retinacula)
- Action: extend leg at knee joint
- Nerve: Femoral nerve (L2, L3, L4)
- Action: extend leg at knee joint
- Insertion: via common tendonus (quadriceps tendon) and independent attachments to base of patella; indirectly via patellar ligament; also to tibia and patella via aponeuroses (patellar retinacula)
- Origin: greater trochanter and lateral lip of linea aspera of femur
- Vastus Medialis
- Origin: intertrochanteric line and medial lip of linea aspera of femur
- Insertion: via common tendonus (quadriceps tendon) and independent attachments to base of patella; indirectly via patellar ligament; also to tibia and patella via aponeuroses (patellar retinacula)
- Action: extend leg at knee joint
- Nerve: Femoral nerve (L2, L3, L4)
- Action: extend leg at knee joint
- Insertion: via common tendonus (quadriceps tendon) and independent attachments to base of patella; indirectly via patellar ligament; also to tibia and patella via aponeuroses (patellar retinacula)
- Origin: intertrochanteric line and medial lip of linea aspera of femur
- Vastus Intermedius
- Origin: anterior and lateral surfaces of shaft of femur
- Insertion: via common tendonus (quadriceps tendon) and independent attachments to base of patella; indirectly via patellar ligament
- Action: extend leg at knee joint
- Nerve: Femoral nerve (L2, L3, L4)
- Action: extend leg at knee joint
- Insertion: via common tendonus (quadriceps tendon) and independent attachments to base of patella; indirectly via patellar ligament
- Origin: anterior and lateral surfaces of shaft of femur
- Rectus Femoris
- Hip Flexors
Medial Thigh: Adductors
- Adductor Longus
- Origin: body of pubis inferior to pubic crest
- Insertion: middle third of linea aspera of femur
- Action: adducts thigh
- Nerve: Obturator nerve, branch of anterior division (L2, L3, L4)
- Action: adducts thigh
- Insertion: middle third of linea aspera of femur
- Origin: body of pubis inferior to pubic crest
- Adductor brevis
- Origin: body and inferior ramus of pubis
- Insertion: pectineal line and proximal part of linea aspera of femur
- Action: adducts thigh; some flexion
- Nerve: Obturator nerve, branch of anterior division (L2, L3, L4)
- Action: adducts thigh; some flexion
- Insertion: pectineal line and proximal part of linea aspera of femur
- Origin: body and inferior ramus of pubis
- Adductor Magnus
- Origin : Adductor part: inferior rams of pubis, rams of ischium Hamstring part: ischial tuberosity
- Insertion: Adductor part: gluteal tuberosity, linea aspera, medial supracondylar line Hamstring part: adductor tubercle of femur
- Action: adducts thigh, Adductor part: flexes thigh, Hamstring part: extends thigh
- Nerve: Adductor part: Obturator nerve (L2, L3, L4) Hamstring part: tibial part of sciatic nerve (L4)
- Action: adducts thigh, Adductor part: flexes thigh, Hamstring part: extends thigh
- Insertion: Adductor part: gluteal tuberosity, linea aspera, medial supracondylar line Hamstring part: adductor tubercle of femur
- Origin : Adductor part: inferior rams of pubis, rams of ischium Hamstring part: ischial tuberosity
- Gracillis
- Origin: body and inferior rams of pubis
- Insertion: superior part of medial surface of tibia
- Action: adducts thigh, flexes leg, helps rotate leg medially
- Nerve: Obturator nerve (L2, L3)
- Action: adducts thigh, flexes leg, helps rotate leg medially
- Insertion: superior part of medial surface of tibia
- Origin: body and inferior rams of pubis
- Obturator Externus
- Origin: margins of obturator foramen and obturator membrane
- Insertion: trochanteric fossa of femur
- Action: Laterally rotates thigh, steadies head of femur in acetabulum
- Nerve: Obturator nerve (L3, L4)
- Action: Laterally rotates thigh, steadies head of femur in acetabulum
- Insertion: trochanteric fossa of femur
- Origin: margins of obturator foramen and obturator membrane
- Adductor Longus
Gluteal Region: ABD and rotators of thigh
- Glutes
- Gluteus Maximus
- Origin: Ilium posterior to posterior gluteal line; dorsal surface of sacrum and coccyx; sacrotuberous ligament
- Insertion: most fibers (superior 3/4) attach to IT band, some fibers (distal 1/4) insert on gluteal tuberosity
- Action: extends thigh (especially from flexed position) and assists in lateral rotation. Steadies thigh and assists in rising from sitting position
- Nerve: inferior gluteal nerve (L5, S1, S2)
- Action: extends thigh (especially from flexed position) and assists in lateral rotation. Steadies thigh and assists in rising from sitting position
- Insertion: most fibers (superior 3/4) attach to IT band, some fibers (distal 1/4) insert on gluteal tuberosity
- Origin: Ilium posterior to posterior gluteal line; dorsal surface of sacrum and coccyx; sacrotuberous ligament
- Gluteus Medius
- Origin: external surface of ilium between anterior and posterior gluteal lines
- Insertion: Lateral surface of greater trochanter of femur
- Action: abduct and medially rotate thigh; keep pelvis level when ipsilateral limb is weight bearing and advance opposite side during swing phase
- Nerve: Superior gluteal (L5, S1)
- Action: abduct and medially rotate thigh; keep pelvis level when ipsilateral limb is weight bearing and advance opposite side during swing phase
- Insertion: Lateral surface of greater trochanter of femur
- Origin: external surface of ilium between anterior and posterior gluteal lines
- Gluteus Minimus
- Origin: external surface of ilium between anterior and inferior gluteal lines
- Insertion: anterior surface of greater trochanter of femur
- Action: abduct and medially rotate thigh; keep pelvis level when ipsilateral limb is weight bearing and advance opposite side during swing phase
- Nerve: superior gluteal (L5, S1)
- Action: abduct and medially rotate thigh; keep pelvis level when ipsilateral limb is weight bearing and advance opposite side during swing phase
- Insertion: anterior surface of greater trochanter of femur
- Origin: external surface of ilium between anterior and inferior gluteal lines
- Gluteus Maximus
- Others
- Tensor Fasciae Latae
- Origin: ASIS; anterior part of iliac crest
- Insertion: IT band
- Action: abduct and medially rotate thigh; keep pelvis level when ipsilateral limb is weight bearing and advance opposite side during swing phase; also assists in thigh flexion
- Nerve: Superior gluteal nerve (L5, S1)
- Action: abduct and medially rotate thigh; keep pelvis level when ipsilateral limb is weight bearing and advance opposite side during swing phase; also assists in thigh flexion
- Insertion: IT band
- Origin: ASIS; anterior part of iliac crest
- Piriformis
- Origin: anterior surface of sacrum, sacrotuberous ligament
- Insertion: superior border of greater trochanter
- Action: laterally rotate and extend thigh and abduct flexed thigh; steady femoral head in acetabulum
- Nerve: branches of anterior rami of S1 and S2
- Action: laterally rotate and extend thigh and abduct flexed thigh; steady femoral head in acetabulum
- Insertion: superior border of greater trochanter
- Origin: anterior surface of sacrum, sacrotuberous ligament
- Quadratus Femoris
- Origin: lateral border of ischial tuberosity
- Insertion: quadrate tubercle on intertrochanteric crest of femur and area inferior to it
- Action: laterally rotates thigh and steadies femoral head in acetabulum
- Nerve: nerve to quadratus femoris (L5, S1)
- Action: laterally rotates thigh and steadies femoral head in acetabulum
- Insertion: quadrate tubercle on intertrochanteric crest of femur and area inferior to it
- Origin: lateral border of ischial tuberosity
- Triceps Coxae
- Obturator Internus
- Origin: Pelvic surface of obturator membrane and surrounding bones
- Insertion: medial surface of greater trochanter (trochanteric fossa)
- Action: laterally rotate and extend thigh and abduct flexed thigh; steady femoral head in acetabulum
- Nerve: nerve to obturator interns (L5, S1
- Action: laterally rotate and extend thigh and abduct flexed thigh; steady femoral head in acetabulum
- Insertion: medial surface of greater trochanter (trochanteric fossa)
- Origin: Pelvic surface of obturator membrane and surrounding bones
- Superior and inferior Gamelli
- Origin: Superior- ischial spine Inferior: ischial tuberosity
- Insertion: medial surface of greater trochanter (trochanteric fossa)
- Action: laterally rotate and extend thigh and abduct flexed thigh; steady femoral head in acetabulum
- Nerve: Superior- nerve to obturator internus (L5, S1) Inferior- nerve to quadrates femoris (L5, S1)
- Action: laterally rotate and extend thigh and abduct flexed thigh; steady femoral head in acetabulum
- Insertion: medial surface of greater trochanter (trochanteric fossa)
- Origin: Superior- ischial spine Inferior: ischial tuberosity
- Obturator Internus
- Tensor Fasciae Latae
- Glutes
Information
- Description
- Mind Map on Thigh Muscles, created by Brittany Naquin on 15/05/2018.
- Created by
- Brittany Naquin · May 2018
- Updated
- May 29, 2018
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