PT ANAT - Lower Quarter - Thigh Anterior & Medial

Tensor Fasciae Latae - Origin

Anterior superior iliac spine; iliac crest

Tensor Fasciae Latae - Insertion

Iliotibial tract, which attaches to Gerdy's tubercle

Tensor Fasciae Latae - Peripheral Innervation

Superior gluteal

Tensor Fasciae Latae - Action

Hip abduction and internal rotation; assists gluteus medius in maintaining a level pelvis

Sartorius - Origin

Anterior superior iliac spine

Sartorius - Insertion

Pes anserine (superior part of medial surface of tibia)

Sartorius - Peripheral Innervation

Femoral

Sartorius - Action

Hip flexion, abduction, and external rotation; when knee is flexed, also knee flexion and internal rotation via pes anserine

Quadriceps Femoris - Rectus Femoris - Origin

Anterior inferior iliac spine

Quadriceps Femoris - Rectus Femoris - Insertion

Via quadriceps tendon to base of patella; indirectly via patellar ligament to tibial tuberosity

Quadriceps Femoris - Rectus Femoris - Peripheral Innervation

Femoral

Quadriceps Femoris - Rectus Femoris - Segmental Innervation

L2, L3, L4

Quadriceps Femoris - Rectus Femoris - Action

Knee extension; hip flexion; stability to hip joint

Quadriceps Femoris - Vastus Lateralis - Origin

Greater trochanter and lateral lip of linea aspera of femur

Quadriceps Femoris - Vastus Lateralis - Insertion

Via quadriceps tendon to base of patella; indirectly via patellar ligament to tibial tuberosity; lateral patellar retinaculum attaches to tibia and patella (via aponeurosis)

Quadriceps Femoris - Vastus Lateralis - Peripheral Innervation

Femoral

Quadriceps Femoris - Vastus Lateralis - Segmental Innervation

L2, L3, L4

Quadriceps Femoris - Vastus Lateralis - Action

Knee extension

Quadriceps Femoris - Vastus Medialis - Origin

Intertrochanteric line and medial lip of linea aspera of femur

Quadriceps Femoris - Vastus Medialis - Insertion

Via quadriceps tendon to base of patella; indirectly via patellar ligament to tibial tuberosity; medial patellar retinaculum attaches to tibia and patella (via aponeurosis)

Quadriceps Femoris - Vastus Medialis - Peripheral Innervation

Femoral

Quadriceps Femoris - Vastus Medialis - Segmental Innervation

L2, L3, L4

Quadriceps Femoris - Vastus Medialis - Action

Knee extension

Quadriceps Femoris - Vastus Intermedius - Origin

Anterior and lateral surfaces of shaft of femur

Quadriceps Femoris - Vastus Intermedius - Insertion

Via quadriceps tendon to base of patella; indirectly via patellar ligament to tibial tuberosity

Quadriceps Femoris - Vastus Intermedius - Peripheral Innervation

Femoral

Quadriceps Femoris - Vastus Intermedius - Segmental Innervation

L2, L3, L4

Quadriceps Femoris - Vastus Intermedius - Action

Knee extension

Gracilis - Origin

Body and inferior ramus of pubis

Gracilis - Insertion

Pes anserine (superior part of medial surface of tibia)

Gracilis - Peripheral Innervation

Obturator

Gracilis - Action

Hip adduction; knee flexion and internal rotation via pes anserine

Adductor Longus - Origin

Body of pubis

Adductor Longus - Insertion

Linea aspera of femur (distal to adductor brevis attachment)

Adductor Longus - Peripheral Innervation

Obturator (anterior branch)

Adductor Longus - Segmental Innervation

L2, L3, L4

Adductor Longus - Action

Hip adduction

Iliopsoas - Psoas Major - Origin

Sides of T12-L5 vertebrae and discs between them; transverse processes of L1-L5

Iliopsoas - Psoas Major - Insertion

Lesser trochanter of femur

Iliopsoas - Psoas Major - Peripheral Innervation

Anterior rami of lumbar nerves L1-L3

Iliopsoas - Psoas Major - Action

Hip flexion; stability to hip joint

Iliopsoas - Psoas Minor - Origin

Sides of T12-L1 vertebrae and intervertebral discs

Iliopsoas - Psoas Minor - Insertion

Pectineal line and iliopubic eminence

Iliopsoas - Psoas Minor - Peripheral Innervation

Anterior rami of lumbar nerves L1-L2

Iliopsoas - Psoas Minor - Action

Hip flexion; stability to hip joint

Iliopsoas - Iliacus - Origin

Iliac crest, iliac fossa, ala of sacrum, and anterior sacroiliac ligaments

Iliopsoas - Iliacus - Insertion

Lesser trochanter of femur via tendon with psoas major

Iliopsoas - Iliacus - Peripheral Innervation

Femoral

Iliopsoas - Iliacus - Segmental Innervation

L2, L3, L4

Iliopsoas - Iliacus - Action

Hip flexion; stability to hip joint

Pectineus - Origin

Superior ramus of pubis

Pectineus - Insertion

Pectineal line of femur, just inferior to lesser trochanter

Pectineus - Peripheral Innervation

Femoral; accessory obturator

Pectineus - Segmental Innervation

L2, L3

Pectineus - Action

Hip adduction and flexion; assists with hip internal rotation

Adductor Brevis - Origin

Body and inferior ramus of pubis

Adductor Brevis - Insertion

Pectineal line and proximal part of linea aspera of femur

Adductor Brevis - Peripheral Innervation

Obturator (branch of anterior division)

Adductor Brevis - Action

Hip adduction; assists with hip flexion

Adductor Magnus - Origin

Adductor part: inferior ramus of pubis and ramus of ischium; Hamstring part: ischial tuberosity

Adductor Magnus - Insertion

Adductor part: gluteal tuberosity, linea aspera, and medial supracondylar line; Hamstring part: adductor tubercle of femur

Adductor Magnus - Peripheral Innervation

Adductor part: obturator (posterior division); Hamstring part: tibial division of sciatic nerve

Adductor Magnus - Action

Hip adduction; adductor part: hip flexion; hamstring part: hip extension

Obturator Externus - Origin

External margins of obturator foramen and obturator membrane

Obturator Externus - Insertion

Trochanteric fossa of femur

Obturator Externus - Peripheral Innervation

Obturator

Obturator Externus - Action

Hip external rotation; stability to hip joint