Human Anatomy

Innominate

Greater Sciatic Notch

Lesser Sciatic Notch

Pubic Tubercle

Pubic Symphysis

Anterior Superior Iliac Spine (ASIS)

Anterior Inferior Iliac Spine (AIIS)

Ischial Tuberosity

Ischial Spine

Auricular Surface (connection between sacrum and ilium)

Acetabulum

Head of Femur

Neck of Femur

Greater Trochanter

Lesser Trochanter

Adductor Tubercle

Medical Condyle of Femur

Lateral Condyle of Femur

Medial Epicondyle of Femur

Lateral Epicondyle of Femur

Linea Aspera

Lateral patellar facet

Medial patellar facet

Patellar inferior pole

Medial condyle of tibia

Lateral condyle of tibia

Gerdy’s Tubercle (insertion of IT band)

Intercondylar Eminence

Tibial tuberosity

Soleal line

Medial Malleolus (Tibia)

Fibular notch

Inferior articular surface of tibia

Head of fibula

Neck of fibula

Apex/styloid process of fibula

Lateral malleolus (fibula)

Gluteus Maximus Origin

Ilium, Sacrum, Coccyx

Gluteus Maximus Insertion

Gluteal tuberosity of femur, IT band

Gluteus Maximus Action

Primary: hip extension, external rotation

Secondary: hip abduction

Gluteus Maximus Innervation

Inferior gluteal nerve

L5-S2

Bicep Femoris Origin

Long head → Ischial tuberosity

Short head → Linea aspera

Bicep Femoris Insertion

Head of fibula

Tibial lateral condyle

Bicep Femoris Action

Hip extension

Knee flexion

Bicep Femoris Innervation

Sciatic nerve

L5-S2

Semitendinosus Origin

Ischial tuberosity

Semitendinosus Insertion

Pes anserine

Semitendinosus Action

Hip extension

Knee flexion

Semitendinosus Innervation

Sciatic nerve

L5-S2

Semimembranosus Origin

Ischial tuberosity

Semimembranosus Insertion

Tibial medial condyle

Semimembranosus Action

Hip extension

Knee flexion

Semimembranosus Innervation

Sciatic nerve

L5-S2

Piriformis Origin

Anterior sacrum

Gluteal surface of ilium

Piriformis Insertion

Greater trochanter

Piriformis Action

Hip external rotation, abduction

Piriformis Innervation

Sacral plexus

S1-S2

Superior Gemellus Origin

Ischial spine

Superior Gemellus Insertion

Greater trochanter

Superior Gemellus Action

Hip external rotation

Superior Gemellus Innervation

Obturator internus nerve

L5-S2

Inferior Gemellus Origin

Ischial tuberosity

Inferior Gemellus Insertion

Greater trochanter

Inferior Gemellus Action

Hip external rotation

Inferior Gemellus Innervation

Quadratus femoris nerve

L4-S1

Obturator Externus Origin

Obturator foramen

Obturator Externus Insertion

Trochanteric fossa (behind greater trochanter)

Obturator Externus Action

Primary: Hip external rotation

Secondary: Adduction

Obturator Externus Innervation

Obturator nerve

L2-L4

Obturator Internus Origin

Obturator foramen

Obturator Internus Insertion

Greater trochanter

Obturator Internus Action

Hip external rotation, abduction

Obturator Internus Innervation

Obturator internus nerve

L5-S2

Quadratus Femoris Origin

Ischial tuberosity

Quadratus Femoris Insertion

Quadratic tubercle (intertrochanteric crest of femur)

Quadratus Femoris Action

Hip external rotation, adduction

Quadratus Femoris Innervation

Quadratus femoris nerve

L4-S1

Rectus Femoris Origin

Anterior inferior iliac spine (AIIS)

Acetabulum

Rectus Femoris Insertion

Base of patella

Tibial tuberosity

Rectus Femoris Action

Hip flexion

Knee extension

Rectus Femoris Innervation

Femoral nerve

L2-L4

Sartorius Origin

Anterior superior iliac spine (ASIS)

Sartorius Insertion

Pes anserine

Sartorius Action

Hip flexion, abduction, external rotation

Knee extension, internal rotation

Sartorius Innervation

Femoral nerve

L2-L3

Tensor Fascia Latae Origin

Anterior superior iliac spine (ASIS)

Tensor Fascia Latae Insertion

IT band → Gerdy’s tubercle

Tensor Fascia Latae Action

Hip abduction, flexion, internal rotation

Tensor Fascia Latae Innervation

Superior gluteal nerve

L4-S1

Iliacus Origin

Iliac fossa and crest

Iliacus Insertion

Lesser trochanter

Iliacus Action

Hip flexion

Iliacus Innervation

Femoral nerve

L2-L4

Psoas Origin

Lumbar transverse process

Psoas Insertion

Lesser trochanter

Psoas Action

Hip flexion

Psoas Innevation

Lumbar plexus

L1-L3

Pectineus Origin

Pubic ramus

Pectineus Insertion

Pectineal line (just below lesser trochanter)

Pectineus Action

Hip flexion, adduction