Glutes and Posterior Thigh Flashcards
Biceps Femoris
Origin
Long head: ischial tuberosity
Short head: lateral lip of linea aspera, lateral supracondylar line
Biceps Femoris
Insertion
Lateral fibulae head
Biceps Femoris
Innervation
Long head: tibial part of Sciatic Nerve (L4-S3)
Short head: common fibulae part of Sciatic Nerve (L4-S2)
Biceps Femoris
Action
Thigh: extension
Leg: flexion, lateral rotation
(Closed chain: trunk extension)
Semitendinosus
Origin
Ischial tuberosity
Semitendinosus
Insertion
Proximal shaft of medial tibia (Pes Anserine)
Semitendinosus
Innervation
Tibial part of Sciatic Nerve (L4-S3)
Semitendinosus
Action
Thigh: extension
Leg: flexion, medial rotation
(Closed chain: trunk extension)
Semimembranosus
Origin
Ischial tuberosity
Semimembranosus
Insertion
Posterior part of medial tibial condyle
Semimembranosus
Innervation
Tibial part of Sciatic Nerve (L4-S3)
Semimembranosus
Action
Thigh: extension
Leg: flexion, medial rotation
(Closed chain: trunk extension)
Gluteus Maximus
Origin
Ilium posterior to posterior gluteal line, dorsal surface of sacrum, lateral coccyx, sacrotuberous ligament
Gluteus Maximus
Insertion
Iliotibial tract to anterolateral tibial tubercle (Gerdy’s Tubercle), gluteal tuberosity
Gluteus Maximus
Innervation
Inferior Gluteal Nerve (L5-S2)
Gluteus Maximus
Action
Thigh: extension, lateral rotation
Closed chain: trunk extension
Gluteus Medius
Origin
Ilium between anterior and inferior gluteal lines
Gluteus Medius
Insertion
Lateral surface of greater trochanter
Gluteus Medius
Innervation
Superior Gluteal Nerve (L4-S1)
Gluteus Medius
Action
Thigh: abduction, medial rotation
(Closed chain: keeps pelvis level during gait)*
Gluteus Minimus
Origin
Ilium between anterior and inferior gluteal lines
Gluteus Minimus
Insertion
Anterior surface of greater trochanter
Gluteus Minimus
Innervation
Superior Gluteal Nerve (L4-S1)
Gluteus Minimus
Action
Thigh: abduction, flexion, medial rotation
Tensor or Fasciae Latae
Origin
ASIS, anterolateral part of iliac crest
Tensor of Fasciae Latae
Insertion
Iliotibial tract to anterolateral tibial tubercle (Gerdy’s Tubercle)
Tensor of Fasciae Latae
Innervation
Superior Gluteal Nerve (L4-S1)
Tensor of Fasciae Latae
Action
Thigh: abduction, flexion, medial rotation, tense iliotibial tract
Piriformus
Origin
Anterior surface of sacrum and of sacrotuberous ligament
Piriformus
Insertion
Greater trochanter
Piriformus
Innervation
Ventral Rami S1-S2
Piriformus
Action
Thigh: lateral rotation, abducts flexed thigh
Gemellus Superior
Origin
Ischial Spine
Gemellus Superior
Insertion
Medial surface of greater trochanter
Gemellus Superior
Innervation
Nerve to Obturator Internus (L5-S2)
Gemellus Superior
Action
Thigh: lateral rotation, abducts flexed thigh
Obturator Internus
Origin
Internal margins of obturator foramen, internal surface of obturator membrane
Obturator Internus
Insertion
Medial surface of greater trochanter
Obturator Internus
Innervation
Nerve to Obturator Internus (L5-S2)
Obturator Internus
Action
Thigh: lateral rotation, abducts flexed thigh
Gemellus Inferior
Origin
Ischial tuberosity
Gemellus Inferior
Insertion
Medial surface of greater trochanter
Gemellus Inferior
Innervation
Nerve to Quadratus Femoris (L4-S1)
Gemellus Inferior
Action
Thigh: lateral rotation, abducts flexed thigh
Quadratus Femoris
Origin
Ischial tuberosity
Quadratus Femoris
Insertion
Quadrate tubercle
Quadratus Femoris
Innervation
Nerve to Quadratus Femoris (L4-S1)
Quadratus Femoris
Action
Thigh: lateral rotation