Origins and Insertions Flashcards
Gluteus Maximus
Origin: ilium (posterior gluteal line and crest), sacrum, and coccyx, aponeurosis of erector spinae
Insertion: Iliotibial tract and gluteal tuberosity
Gluteus medius
O: Ilium between posterior and inferior anterior gluteal lines
I: Oblique ridge on lateral surface of greater trochanter
Gluteus minimus
O: Ilium between anterior and inferior gluteal lines and margin of greater sciatic notch
I: Anterior border of grater trochanter
Piriformis
O: pelvic surface of sacrum, capsule of SI joint
I: Superior border of greater trochanter
Obturator internus
O: pelvic surface of obturator membrane and margin of obturator foramen, pelvic surface of ischial ramus, inferior pubic ramus
I: Medial surface of greater trochanter
Superior gemellus
O: ischial spine
I: Medial surface of greater trochanter
Inferior gemellus
O: proximal part of ischial tuberosity
I: Medial surface of greater trochanter
Quadratus Femoris
O: proximal part of lateral border of ischial tuberosity
I: Quadrate tubercle
Pectineus
O: pectin pubis
I; Shaft of femur on line from lesser trochanter to linea aspera
TFL
O: outer lip of iliac crest, ASIS
I: Proximal medial surface of tibial shaft distal to tibial condyle
Rectus femoris
O: AIIS, acetabulum, and capsule of hip joint
I: base of patella
Adductor longus
O: pubis
I: middle 1/3 of medial lip of linea aspera
Adductor brevis
O: inferior ramus and body of pubis
I: along line from lesser trochanter to proximal 1/3 of medial lip of linea aspera
Adductor magnus
O: inferior pubic ramus, inferior ramus of ischium, ischial tuberosity
I: linea aspera, medial supracondylar line
Gracillis
O: Inferior pubic ramus
I: Medial surface of tibial shaft below tibial condyle
Obturator externus
O: pubic ramus, ischial ramus, margins of obturator foramen
I: Trochanteric fossa
Semitendinosus
O: ischial tuberosity
I: medial side of proximal tibial shaft
Semimembranosus
O: Ischial tuberosity
I: medial condyle of tibia
Biceps femoris
O: Ischial tuberosity, sacrotuberous ligament
I: fibular head, lateral tibial condyle
Tibialis anterior
O: lateral tibial condyle, proximal 2/3 of lateral shaft of tibia
I: Medial cuneiform and base of 1st metatarsal
Extensor hallucis longus
O: medial aspect of middle shaft of fibula
I: base of dorsal surface of distal phalanx of great toe, expansion to base of proximal phalanx of great toe
Extensor digitorum longus
O: lateral condyle of tibia, upper 3/4 of medial shaft of fibula
I: four tendinous slips tot he dorsum of toes 2-5
Fibularis tertius
O: distal 1/3 of medial fibula
I: dorsum of base of 5th metatarsal
Fibularis longus
O: head and upper 2/3 of fibula
I: plantar aspect of base of 1st metatarsal, plantar aspect of medial cuneiform
Fibularis brevis
O: distal 2/3 of fibula
I: tuberosity of 5th metatarsal
Gastrocnemius
O: medial and lateral femoral condyle
I: calcaneus
Soleus
O: fibular head and proximal 1/3 of posterior fibula, soleal line and middle 1/3 of medial tibial shaft
I: calcaneus
Plantaris
O: lateral aspect of subrandcondylar line of femur
I: calcaneus
Popliteus
O: lateral condyle of femur, capsule of knee joint, lateral meniscus
I: posterior surface of tibia above soleal line
Flexor hallucis longus
O: Inferior 2/3 of posterior shaft of fibula
I: Plantar surface of base of the distal phalanx of great toe
Flexor digitorum longus
O: Posterior surface of middle 2/3 of tibia
I: plantar surface of the base of the distal phalanx of toes 2/5
Tibialis posterior
O: posterior tibia inferior to soleal line, proximal 2/3 of posterior fibula and fibular head
I: tuberosity of navicular bone, 3 cuneiform bones, cuboid, bases of metatarsals 2-4
Abductor hallucis
O: medial process of tuberosity of calcaneus
I: medial side of base of proximal phalanx of great toe
Flexor digitorum brevis
O: medial process of tuberosity of calcaneus
I: 4 digits- both sides of middle phalanges of toes 2-5
Abductor digiti minimi
O: medial and lateral processes of tuberosity of calcaneus
I: lateral side of base of proximal phalanx of 5th toe
Quadratus plantae
O: lateral border of plantar surface of calcaneus and lateral border of long plantar ligament (lateral) and medial border of calcaneus (medial)
I: lateral margin of tendon of flexor digitorum longus
Lumbricals
O: first originates by a single head from the medial side of the tendon of the flex dig long bound for the 2nd toe. The 2-4 originate by double heads from the adjacent sides of flex dig long tendons bound for toes 3,4,5
I: proximal phalanges and dorsal expansions of the tendons of the ext dig longus for toes 2-5
Flexor hallucis brevis
O: medial part of plantar surface of cuboid and cuneiform and tendon of tibialis posterior
I: both sides of base of proximal phalanx of great toe
Adductor hallucis
O: bases of metatarsals 2-4 (oblique) and plantar metatarsophalangeal ligaments of toes 3-5 (transverse)
I:lateral side of base of proximal phalanx of 1st digit (oblique) and lateral sesamoid of hallus (transverse)
Flexor digit minimi brevis
O: base of plantar surface of 5th metatarsal
I: Base of proximal phalanx of toe 5
Plantar interossei (3)
O: bases and medial sides of metatarsal 3-5
I: medial sides of bases of proximal phalanges of same toes
Dorsal interossei (4)
O: metatarsal bones
I: first into the medial side of proximal phalanx of 2nd digit, 2-4 into lateral side of proximal phalanges of toes 2-4. All insert into the tendons of the extensor digitorum longus
