O's
Where does rectus femoris originate?
Anterior Inferior Iliac Spine
Where do your quadriceps muscles insert?
Tibial Tuberosity
What is the action of Extensor Hallucis Longus?
Extend the first toe (metatarsophalangeal and interphalangeal joints)
Dorsiflex the ankle (talocrural joint)
Invert the foot
What nerve innervates the hamstring muscle group?
Sciatic
How many ACL injuries occur each year?
100,000 to 200,000
Where does the gastrocnemius originate?
Condyles of the femur
Where does gluteus medius insert?
lateral aspect of greater trochanter
What is the action of the semitendinosus?
Flex the knee (tibiofemoral joint)
Medially rotate the flexed knee (T/F joint)
Extend the hip (coxal joint)
Assist to medially rotate the hip (coxal joint)
Tilt the pelvis posteriorly
What nerve innervates the gastrocnemius?
Tibial
What muscle "unlocks the knee"
Popliteus
Where does adductor brevis originate?
inferior ramus of pubis
Where does fibularis brevis insert?
tuberosity of 5th metatarsal
What is the action of gluteus maximus?
All fibers:
Extend the hip (coxal joint)
Laterally rotate the hip (coxal joint)
Abduct the hip (coxal joint)
Lower fibers:
Adduct the hip (coxal joint)
What nerve innervates Gluteus Maximus?
Inferior Gluteal
How does an injury to the PCL occur?
Where does plantaris originate?
Lateral supracondylar line of femur
Where does semimembranosus insert?
Posterior aspect of medial condyle of tibia
What is the action of the soleus?
Plantar flex the ankle (talocrural joint)
What nerve innervates fibularis longus?
Superficial fibular
What muscle is known as the "Tailor's muscle"?
Sartorius
Where does Quadratus femoris originate?
Lateral border of ischial tuberosity
Where does tibialis anterior insert?
Medial cuneiform and base of the first metatarsal
What is the action of Psoas Major?
With the origin fixed:
Flex the hip (coxal joint)
May laterally rotate the hip (coxal joint)
With the insertion fixed:
Flex the trunk toward the thigh
Tilt pelvis anteriorly
Unilaterally:
Assist to laterally flex the lumbar spine
What nerve innervates Gracilis?
Obturator
What muscles are used when ice skating?
Adductors