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The Lower Extremity

Pelvic bones= ilium, ischium, pubis
anterior muscles of the hip joint= iliopsoas, pectineus, rectus femoris, sartorius, tenor fasciae latae
posterior muscles of the hip joint= biceps fermoris, semitendonosus, semimembranous, gluteus maximus, 6 deep lateral rotators
medial muscles of the hip joint= adductor brevis, adductor longus, adductor mangus, gracialis
lateral muscles of the hip joint= gluteus medius, gluteus minimus
Sartorius- O= anterior superior iliac spine and notch below spine of ilium I= anterior medial surface of tibia just below condyle IV= femoral nerve (L2, L3)
what are the hamstring muscles? biceps femoris, semitendonosus, semimembranosus
Rectus Femoris- O= anterior inferior iliac spine of ilium and groove (posterior) above acetabulum I= superior aspect of patella and patellar tendon to tibial tuberosity IV= femoral nerve (L2-L4)
Gluteus Maximus- O= posterior 1/4 of crest of ilium, posterior surface of sacrum and coccyx near ilium and fascia of lumbar area I= oblique ridge/ gluteal tuberosity on lateral surface of greater trochanter and IT band of fascia latae
knee medial collateral ligament- medial epicondyle of femur to medial epicondyle of tibia, controls extension and bilateral movement
knee lateral collateral ligament- lateral epicondyle of femur to lateral surface of fibula, controls extension and medial motion
knee ACL (anterior cruciate ligament) anterior intercondyloid fossa of tibia to medial surface of lateral condyle of femur, controls anterior tibial translation
knee PCL (posterior cruciate ligament) posterior intercondyloid fossa of tibia to lateral and anterior portion of medial epicondyle of femur; controls posterior tibial translation
what are the quad muscles? rectus femoris, vastus lateralis, vastus medialis, vastus intermedius
what does the rectus femoris do? powerful knee extension
what does the vastus lateralis, medialis, and intermedius do? also extension of the knee
what does the sartorius do? flexion and internal rotation non weight bearing
what does the biceps femoris do? hip extension, knee flexion, external rotation of hip and knee
what does the semitendonosus do? hip extension, knee flexion, and internal rotation of hip and knee
what does the semimembranosus do? hip extension, knee flexion, and internal rotation of hip and knee
Hamstring: biceps femoris O of long head- tibial tuberosity O of short head= linea aspera I= lateral tibial condyle, head of fibular, IV of long head= sciatic nerve S1-S3 tibial division IV of short head= sciatic nerve L5, S1, S2 peroneal division
Hamstring: semitendinosus O= ischial tuberosity and I= anterior medial surface of tibi below condyle, IV= sciatic nerve tibial divsion L5, S1, S2
Hamstring: semimembranosus same O and IV as semitendonosus (O= ischial tuberosity (IV= sciatic nerve tibial divison L5, S1, S2) I= posteromedial surface of medial tibial condyle
gastrocnemius- O= medial and lateral posterior surface of femoral condyles I= acilles tendon IV= tibial nerve (S1,S2)
vastus intermedius- O= upper 2/3 of ant surf femur I= upper border patella and patellar tendon to tibial tuberosity IV= femoral nerve (S1, S2)
vastus medialis- O= whole length linea aspera and medial condyloid ridge, I= medial half upper border of patella and patellar tendon to tibial tuberosity IV= femoral nerve (L2-L4)
vastus lateralis- O= intertrochanteric line, ant and inf surface of greater trochanter I= lateral border patella and patellar tendon to tibial tuberosity IV= femoral nerve (L2-L4)
plantarflexors- peroneus longus, peroneus brevis, peroneus tertius, gastrocs, soleus, flexor digitorum longus, flexor hallucis longus, tibialis
dorsiflexors- tibialis anterior, extensor hallucis longus
what kind of joint is the ankle? talocrural joint (talus and distal tibial) hinge joint
what can the ankle do? 50 degree plantar flex, 15-20 degree dorsiflex, inversion and eversion
movements of the ankle dorsiflexion, plantar flexion, eversion, inversion, toe flex, toe ext, pronation, supination
2 arches of the foot longitudinal and transverse
Sections of the Spine 7 cervical, 12 thoracic, 5 lumbar, 5 sacral, 4-5 coccygeal
intervertebral discs annulus fibrosus and nucleus pulposus
annulus fibrosus tough outer layer, dense fibrocartilage
nucleus pulposus inner, gel-like center
muscle that moves the head: sternocleidomastoid head and neck flexion, rotation to opposite side
muscle that moves the head: splenius both sides- extension of head and neck, rotation; R side- rotation and lateral flexion to right L side- rotation and lateral flexion to left
muscles that moves the head: scalenes flexion and lateral extension of head to same side
semispinalis- lateral flexion, extension, and rotation
quadratus lumborum- lateral flexion, pelvic and lumbar stabilizer, rotation against resistance
errector spinae- extension, lateral flexion, ant pelvic rotation, lateral pelvic rotation
Created by: sbush0804



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