Skills check WI 4 Flashcards
Multifidus
O: mamillary processes of lumbar vertebra, PSIS, posterior aspect of sacrum
I: lateral spects and tips of spinous processes of vertebra 2-5 levels above origin
N: posterior rami of spinal nerves
A: stabilizes vertebrae during local movements of spinal column
Quadratus Lumborum
O: medial half of inferior boarder of 12th ribs and tips of lumbar transverse processes
I: iliolumbar ligament and internal lip of iliac crest
N: anterior branches of T12 & L1-4 nerves
A: “hip hiking”; extends and laterally flexes vertebral column
Semitendinosus
O: ischial tuberosity
I: pes anserinus
N: tibial division of sciatic nerve
A: extend hip; flex knee joint; ER of knee when flexed
Semimembranosus
O: Ischial tuberosity
I: medial condyle of tibia
N: tibial division of sciatic nerve
A: extend hip; flex knee joint; ER of knee when flexed
Biceps Femoris
O:
LH - ischial tuberosity
SH - linea aspera
I: head of fibula; tendons split at LCL
N:
LH - tibial division of sciatic nerve
SH - fibular division of sciatic nerve
A: flexes knee joint; laterally rotates when flexed; LH extends hip joint
Rectus femoris
O: AIIS
I: common tendinous (quad tendon) at base of patella; vastus medialis/lateralis to patellar retinaculum
N: femoral nerve
A: extend knee joint; flexes hip joint
Vastus medialis
O: intertrochanteric line and linea aspera
I: common tendinous (quad tendon) at base of patella; vastus medialis/lateralis to patellar retinaculum
N: femoral nerve
A: extends knee joint
Vastus lateralis
O: greater trochanter and lateral lip of linea aspera
I: common tendinous (quad tendon) at base of patella; vastus medialis/lateralis to patellar retinaculum
N: femoral nerve
A: extends knee joint
Pectineus
O: superior rami of pubis
I: pectineal line of femur
N: femoral nerve
A: adduction of hip joint
Adductor magnus
O: inferior ramus of pubis and ramus of ischium; ischial tuberosity(hamstring part)
I: gluteal tuberosity, linea aspera, medial supracondylar line (adductor part); adductor tubercle (hamstring part)
N: obturator nerve (adductor part); tibial portion of sciatic nerve (hamstring part)
A: adducts hip joint; flexes hip joint (adductor part); extends hip joint (hamstring part)
Tensor Fascia Latae
O: ASIS; anterior part of iliac crest
I: IT Band which goes to lateral condyle of tibia
N: superior gluteal nerve
A: abducts and medially rotates hip joint
Gluteus maximus
O: posterior ilium to posterior gluteal line; dorsal surface of sacrum & coccyx
I: most fibers to IT band; some fibers to gluteal tuberosity
N: inferior gluteal nerve
A: extends hip joint and assists in lateral rotation
Gluteus medius
O: external surface of ilium between anterior and inferior gluteal lines
I: lateral surface of greater trochanter of femur
N: superior gluteal nerve
A: abducts and medially rotates hip joint
Gluteus minimus
O: external surface of ilium between anterior and inferior gluteal lines
I: anterior surface of greater trochanter
N: superior gluteal nerve
A:abducts and medially rotates hip joint
Piriformis
O: anterior surface of sacrum
I: superior border of greater trochanter
N: nerve to piriformis
A: externally rotates extended hip joint; abduct hip joint when flexed
Quadratus femoris
O: lateral board of ischial tuberosity
I: quadrate tubercle on intertrochanteric crest of femur
N: nerve to quadratus femoris
A: laterally rotates hip joint
Psoas major
O: transverse processes of lumbar vertebrae; sides of bodies of T12-L5 vertebrae
I: strong tendon to lesser trochanter of femur
N: anterior rami of lumbar nerves L1, L2, and L3
A: hip flexion with iliacus; flexes vertebral column laterally superiorly
Iliacus
O: superior 2/3rds of iliac fossa, ala of sacrum and anterior sacro-iliac ligaments
I: lesser trochanter of femur
N: femoral nerve
A: flexes thigh and stabilizes hip joint
Tibialis anterior
O: lateral condyle & superior half of lateral surface of tibia & interosseous membrane
I: medial and inferior surfaces of medial cuneiform and base of 1st metatarsal
N: deep fibular nerve
A: dorsiflexion
Extensor digitorum longus
O: lateral condyle of tibia and superior three quarters of medial surface of fibula/interosseous membrane
I: middle and distal phalanges of lateral 4 digits
N: deep fibular nerve
A: extends lateral 4 digits and dorsiflexes ankle
Extensor hallucis longus
O: middle part of anterior surface of fibula and interosseous membrane
I: dorsal aspect of base of distal phalanx of great toe
N: deep fibular nerve
A: extends great toe and dorsiflexes ankle joint
Tibialis posterior
O: interosseous membrane; posterior surface of tibia inferior to soleal line; posterior surface of fibula
I: tuberosity of navicular, cuneiform, cuboid, and sustentaculum tali; bases of 2,3,4 metatarsals
N: tibial nerve
A: plantarflexion; inverts foot; maintains medial longitudinal arch of foot
Flexor digitorum longus
O: medial part of posterior surface of tibia inferior to soleal line
I: bases of distal phalanges of lateral 4 digits
N: tibial nerve
A: flexes lateral four digits; plantar flexion; supports longitudinal arch of the foot
Flexor hallucis longus
O: inferior 2/3rds of posterior surface of fibula; inferior part of interosseous membrane
I: base of distal phalanx of great toe
N: tibial nerve
A: flexes great toe, weakly plantar flexion; supports medial longitudinal arch of foot
