LE Structures Flashcards
Gluteus Maximus
O: Ilium, posterior gluteal line, dorsal surface of sacrum and coccyx, and sacrotuberous ligament
I: Iliotibial tract and gluteal tuberosity
A: Extension and ER
N: Inferior gluteal N. L5-S2
Gluteus Medius
O: B/w anterior and posterior gluteal lines
I: Lateral surface of GT
A: ABD femur at hip joint, keeps pelvis level when ipsilateral limb WB, anterior fibers- IR
N: Superior gluteal N. L4-S1
Gluteus Minimus
O: Bw inferior and anterior gluteal lines
I: Antero-lateral aspect of GT
A: ABD femur as hip joint, keeps pelvis level when ipsilateral limb WB, anterior fibers-IR
N: Superior gluteal n. L4-S1
TFL
O: ASIS
I: ITB tract of fascia lata
A: ABD femur as hip joint, keeps pelvis level when ipsilateral limb WB, anterior fibers-IR, stabilizes knee extension
N: Superior gluteal n. (L4-S1)
Piriformis
O: Anterior surface of sacrum bw S1-S4
I: Superior border of GT
A: ER extended thigh, ABD flexed thigh, steady femoral head in acetabulum
N: Spinal N. L5-S2 (nerve to pirfiormis)
Obturator Internus
O: Inner surface of obturator foramen
I: Medial surface of GT
A: ER extended hip, ABD flexed thigh, steady femoral head in acetabulum
N: Spinal N. L5-S2 (nerve to obturator internus)
Obturator Externus
O: External surface of obturator foramen
I: Trochanteric fossa of femur
A: ER of extended hip, ABD flexed thigh
N: Obturator N. (L3,L4)
Superior Gemellus
O: Ischial Spine
I: Medial surface of GT
A: ER extended hip, ABD flexed thigh
N: Spinal N. L5-S1
Inferior Gemellus
O: Ischial tuberosity
I: Medial surface of GT
A: ER extended hip, ABD flexed thigh
N: Spinal N. (L5-S1)
Quadratus Femoris
O: Lateral border of ischial tuberosity
I: Intertrochaneric crest of femur
A: ER hip
N: Spinal N. (L5-S1)
Psoas Major
O: Sides of T12 to L5 & intervertebral discs
I: Lesser Trochanter
A: Flexes thigh and trunk
N: Spinal N. L1-L3
Iliacus
O: Iliac Fossa
I: Lesser Trochanter
A: Flexes thigh and trunk
N: Femoral N. L2-L3
Sartorius
O: ASIS
I: Pes Anserinus
A: Flexes thigh and flexes leg
N: Femoral N. L2-L3
Rectus Femoris
O: ASIS and groove superior to acetabulum
I: Quadriceps Tendon, patella, tibial tuberosity
A: Extends leg and flexes hip
N: Femoral N. L2-L4
Vastus Lateralis
O: GT
I: Quadriceps tendon & Lateral border of patella
A: Extends the leg
N: Femoral N. L2-L4
Vastus Medialis
O: Intertrochanteric line and linea aspera
I: Quadriceps tendon & medial border of patella
A: Extends the leg
N: Femoral L2-L4
Vastus Intermedius
O: Intertorhcanteric line and upper 2/3 of anterior femur
I: Quadriceps femoris tendon
A: Extends the leg
N: Femoral N. L2-L4
Biceps Femoris Long Head
O: Ischial tuberosity
I: Lateral tibia, head of fibula
A: thigh extension, knee flexion
N: Tibial N. S1-S3
Biceps Femoris Short Head
O: Linea aspera
I: Lateral tibia, head of fibula
A: Thigh extension, knee flexion
N: Common fibula N. L5-S2
Semi tendinosus
O: Ischial tuberosity
I: Pes Anserinus
A: Thigh extension and knee flexion
N: Tibial N. L5-S2
Semi Membranosus
O: Ischial tuberosity
I: Medial condyle of tibia
A: Thigh extension and knee flexion
N: Tibial N. L5-S2
Adductor Longus
O: Body of pubis, close to symphysis
I: Linea aspera of femur
A: Adducts thigh and rotates thigh medially
N: Obturator N. L3 & L4
Adductor Brevis
O: Inferior pubic ramus, close to symphysis
I: Upper part of linea aspera
A: Adducts thigh
N: Obturator N. L3-L4
Adductor Magnus
O: Inferior ramus of pubis, inferior ramus of ischium, ischial tuberosity
I: Linea aspera of femur and supracondylar line
A: Adducts thigh
N: Obturator N. (L3-L4) and branches from sciatic
Gracilis
O: Inferior ramus of pubis
I: Pes anserinus
A: Adducts thigh and flexes leg
N: Obturator N. (L3-L4)
Pectineus
O: superior ramus of pubis
I: Pectineal line of femur
A: Adduct and flexes thigh
N: Femoral Nerve L2-L4
Tibialis Anterior
O: Lateral condyle of tibia
I: Medial cuneiform & Base of Metatarsal I
A: DF and INV of foot
N: Deep fibular (L4, S1)
Extensor Hallucis Longus
O: Middle medial surface of fibula and interosseous membrane
I: Base of distal phalanx of great toe
A: Extension of great toe & DF of foot
N: Deep fibular (L4-S1)
Extensor Digitorum Longus
O: Medial surface of fibula and lateral tibial condyle
I: Distal and middle phalanges of lateral four toes
A: Extension of lateral four toes and DF
N: Deep fibular n. (L4-S1)
Fibularis Tertius
O: Distal part of anterior surface of fibula
I: Dorsomedial surface of metatarsal V
A: DF and Eversion of foot
N: Deep fibular n. (L3-S1)
Fibularis Longus
O: Upper lateral surface of fibula, head, and interosseous membrane
I: Base of metatarsal I and medial cuneiform
A: Eversion and PF of foot
N: Superficial Fibular B. (L4-S1)
Fibularis Brevis
O: Lateral surface of shaft of fibula
I: Lateral tubercle at base of metatarsal V
A: Eversion of foot and PF
N: Superficial Fibular N. L4-S1
Gastrocnemius
O: Upper posterior medial and lateral surfaces of femoral condyles
I: Calcaneal tendon, calcaneus
A: PF and knee flexion
N: TibialN. S1-S2
Plantaris
O: Lateral supracondylar line of femur
I: Calcaneal tendon, calcaneus
A: PF and knee flexion
N: Tibial N. S1-S2
Soleus
O: Soleal line, medial border of tibia, posterior aspect of fibular head, neck, and proximal shaft
I: Calcaneal tendon, calcaneus
A: PF
N: Tibial N. S1-S2
Popliteus
O: Lateral surface of femoral condyle
I: Posterior surface proximal medial tibia
A: Close chain= Laterally rotated femur (unlocks knee), Open chain= Medially rotates tibia
N: Tibial N. L4-S1
Flexor Digitorum Longus
O: Medial side of posterior surface of tibia
I: Distal phalanges of lateral four toes
A: Flexes lateral four toes
N: Tibial N. L4-S2
Flexor Hallucis Longus
O: Inferior 2/3 of posterior surface of fibula and interosseous membrane
I: Plantar surface of distal phalanx of great toe
A: Flexes great toe, inversion, and PF
N: Tibial N. L4-S2
Tibialis Posterior
O: Posterior surface of interosseous membrane and shafts of tibia, and fibula
I: Tuberosity of navicular ad medial cuneiform
A: Inversion and PF
N: Tibial Nerve L5-S1
