Muscle Attachments Flashcards
Obturator Internus
Origin: internal surface of ilium, ischium, pubis, and obturator membrane
Insertion: lateral greater trochanter of femur
Piriformis
Origin: pelvic surface of S2-S4, superior margin of greater sciatic notch, and sacrotuberous ligament
Insertion: lateral greater trochanter of femur
Coccygeus
Origin: ischial spine
Insertion: inferior end of sacrum and coccyx
Levator ani
Origin: body of pubis, tendinous arch of obturator fascia, ischial spine
Insertion: perineal body, coccyx, anococcygeal ligament, walls of prostate/vagina, rectum, and anal canal
iliopsoas
Origin: iliac fossa, transverse processes and bodies of T12-L5
Insertion: Lesser trochanter
Sartorius
Origin: anterior superior iliac spine
Insertion: proximal portion of medial tibia
Tensor fascia lata
Origin: anterior superior iliac spine
Insertion: iliotibial tract/band
Rectus femoris
Origin: anterior inferior iliac spine
Insertion: tibial tuberosity (patellar ligament)
Vastus lateralis
Origin: greater trochanter and lateral lip of linea aspera
Insertion: tibial tuberosity (patellar tendon)
Vastus medialis
Origin: intertrochanteric line and medial lip of linea aspera
Insertion: tibial tuberosity (patellar ligament)
Vastus intermedius
Origin: anterior and lateral body of femur
Insertion: tibial tuberosity (patellar tendon)
Pectineus
Origin: superior ramus of pubis
Insertion: pectineal line of femur
Gracilis
Origin: body of inferior ramus of pubis
Insertion: superior part of medial surface of tibia
Adductor longus
Origin: body of pubis inferior to pubic crest
Insertion: middle third of linea aspera
Adductor brevis
Origin: body of inferior ramus of pubis
Insertion: pectineal line and proximal part of linea aspera
Adductor magnus
Origin: adductor: inferior ramus of pubis, ramus of ischium
Hamstring: ischial tuberosity
Insertion: adductor: gluteal tuberosity, linea aspera, medial supracondylar line
Hamstring: adductor tubercle of femur
Obturator externus
Origin: margins of obturator foramen and obturator membrane
Insertion: trochanteric fossa
Gluteus maximus
Origin: ilium, dorsal sacrum and coccyx, sacrotuberous ligament
Insertion: IT band, gluteal tuberosity
Gluteus medius
Origin: external ilium between anterior and posterior gluteal lines, gluteal fascia
Insertion: lateral greater trochanter
Gluteus minimus
Origin: external ilium between anterior and inferior gluteal lines
Insertion: anterior greater trochanter
Quadratus femoris
Origin: ischial tuberosity
Insertion: quadrate tubercle
Superior gemellus
Origin: ischial spine
Insertion: medial greater trochanter
Inferior gemellus
Origin: ischial tuberosity
Insertion: medial greater trochanter
Biceps femoris
Origin: ischial tuberosity (long), lateral lip of linea aspera, lateral supracondylar ridge (short)
Insertion: head of fibula
Semitendonosus
Origin: ischial tuberosity
Insertion: medial proximal tibia
Semimembranosus
Origin: ischial tuberosity
Insertion: posterior aspect of tibial medial condyle
Tibialis anterior
Origin: lateral condyle and superior half of lateral surface of tibia, interosseous membrane
Insertion: medial and inferior surfaces of medial cuneiform and base of 1st metatarsal
Extensor digitorum longus
Origin: lateral condyle of the tibia and proximal 3/4ths of medial surface of fibula, interosseous membrane
Insertion: middle and distal phalanges of lateral four digits
Extensor hallicus longus
Origin: middle anterior surface of fibula and interosseous membrane
Insertion: dorsal base of distal phalanx of hallux
Fibularis tertius
Origin: inferior third of anterior surface of fibula and interosseous membrane
Insertion: dorsum of base of 5th metatarsal
Fibularis longus
Origin: head and superior 2/3 of lateral fibula
Insertion: base of 1st metatarsal and medial cuneiform
Fibularis brevis
Origin: inferior 2/3 of lateral fibula
Insertion: tuberosity on lateral base of 5th metatarsal
Gastrocnemius
Origin: lateral: lateral femoral condyle
medial: popliteal surface of femur superior to medial condyle
Insertion: calcaneus (calcaneal tendon)
Soleus
Origin: head of fibula, superior 1/4 of posterior fibula, soleal line and medial border of tibia
Insertion: calcaneus via calcaneal tendon
Plantaris
Origin: lateral supracondylar ridge
Insertion: calcaneus (calcaneal tendon)
Flexor digitorum longus
Origin: posteromedial tibial, inferior interosseous membrane
Insertion: base of distal phalanges of digits 2-5
Popliteus
Origin: lateral condyle of femur and meniscus
Insertion: posterior tibia
Tibialis posterior
Origin: interosseous membrane, posterior tibia and fibula
Insertion: navicular, cuneiform, cuboid, and bases of metatarsals 2-4
Flexor hallucis longus
Origin: inferior 2/3 of posterior fibula, inferior interosseous membrane
Insertion: base of distal phalanx of hallux
Extensor digitorum brevis
Origin: superolateral aspect of calcaneus
Insertion: middle phalanx of digits 2-4
Extensor hallucis brevis
Origin: superolateral aspect of calcaneus
Insertion: base of proximal phalanx of hallux
Abductor hallucis
Origin: calcaneus and plantar fascia
Insertion: medial side of proximal phalanx of hallux
Flexor digitorum brevis
Origin: calcaneus and deep surface of plantar aponeurosis
Insertion: middle phalanx of digits 2-5
Abductor digiti minimi
Origin: calcaneus and plantar fascia
Insertion: lateral side of base of proximal phalanx of digit 5
Lumbricals
Origin: tendons of flexor digitorum longus
Insertion: medial side of dorsal digital expansion hoods of digits 2-5
Quadratus plantae
Origin: medial and lateral sides of calcaneus
Insertion: tendon of flexor digitorum longus
Flexor hallucis brevis
Origin: cuboid and lateral cuneiform
Insertion: medial and lateral sides of base of proximal phalanx of hallux
Adductor hallucis
Origin: oblique: bases of metatarsals 2-4
transverse: metatarsophalangeal joint capsules
Insertion: lateral side of base of proximal phalanx of hallux
Adductor digiti minimi
Origin: base of 5th metatarsal
Insertion: lateral side of base of proximal phalanx of digit 5
Plantar interossei
Origin: base and medial side of metatarsals 3-5
Insertion: medial side of the base of proximal phalanx of digits 3-5
Dorsal interossei
Origin: metatarsals 1-5
Insertion: 1st: medial side of proximal phalanx of digit 2
2-4th: lateral side of proximal phalanges of digits 2-4
