Gross Anatomy L18

pt is having difficulty rising from seated position, what may this indicate?

weakness of gluteus maximus and/or inferior gluteal nerve injury

what is piriformis syndrome

occurs when piriformis tightens and compresses the adjacent sciatic nerve

hip extensors

gluteus maximus, semitendinosus, semimembranosus, biceps femoris long head

hip lateral rotators

piriformis, gluteus maximus, quadratus femorus, obturator internus and externus, gamellus superior and inferior, sartorius

hip abductors

gluteus medius, gluteus minimus tensor fascia latae

what is characterized by a contralateral trunk lean and dropped pelvis on the unsupported side?

trendelenburg gait

what causes trendelenburg gait

gluteus medius weakness or superior gluteal nerve injury

hip medial rotators

no primary muscles, tensor fascia latae, gluteus minimus, gluteus medius, anterior fibers

hip flexors

iliopsoas, rectus femoris, tensor fascia latae, sartorius

what indicates damage to iliopsoas

reduced ability or weakened stair climbing

hip adductors

adductor magnus, pectineus, adductor longus, adductor brevis, gracilis, obturator externus

what would obturator nerve injury impair

hip adduction

knee flexors

semimembranosus, semitendinosus, biceps femoris (both heads), sartorius, gracilis, popliteus, gastrocnemius

what do the hamstrings attach to

the ischial tuberosity

if i have an avulsion fracture of the ischial tuberosity, what action would be affected

knee flexion

medial knee rotators

popliteus, semimembranosus, semitendinosus, sartorius, gracilis

lateral knee rotators

biceps femoris

which rotation of the locks and unlocks the knee

medial unlocks, lateral locks during full extension

knee extensors

vastus lateralis, vastus medialis, vastus intermedius, rectus femoris

what injury impairs knee extension and upright stability

patellar tendon rupture

muscles of the medial thigh

adductor longus, adductor brevis, adductor magnus, gracilis, obturator externus

primary hip adduction muscle

adductor magnus

what innervates the medial thigh

obturator nerve

where do medial thigh muscles attach

proximally to the hip on or near the pubis/obturator foramen

what innervates the hamstring part of the adductor magnus

tibial part of sciatic nerve

what does hamstring part of adductor magnus do as an action

hip extension

muscles of the anterior thigh

iliopsoas, pectineus, sartorius, rectus femoris, vastus lateralis, vastus intermedius, vastus medialis

which two muscles cross both the hip and knee joint

sartorius and rectus femoris

hip flexors

iliopsoas, pectineus, sartorius, rectus femoris

what innervates the anterior compartment of the thigh

femoral nerve

what action does rectus femoris do

extend leg at knee, flex thigh at hip

what group of muscles are primary for knee extension

quadriceps

where do all nerves of the medial and anterior thigh arise from

lumbar plexus

motor innervation of femoral nerve

anterior thigh

cutaneous innervation of femoral nerve

anteromedial thigh, hip and knee joints, medial leg and foot

obturator nerve motor innervation

medial thigh muscles

cutaneous innervation of obturator nerve

medial thigh

what does lateral femoral cutaneous nerve innervate

cutaneous lateral thigh

what does ilioinguinal nerve innervate

skin over proximal part of medial thigh

what does iliohypogastric nerve innervate

skin over posterolateral gluteal region

what does genitofemoral nerve innervate

skin of anterior thigh, inferior to mid portion of inguinal region

what plexus is the lumbosacral trunk from

sacral plexus

what does inferior gluteal artery supply

piriformis, gluteus maximus

what does obturator artery supply

medial thigh

what does superior gluteal artery supply

gluteus medius and minimus

what does iliolumbar artery supply

psoas major, iliacus, quadratus lumborum

what does obturator vein drain into

internal iliac vein

superficial veins

great saphenous vein, small saphenous vein

what does great saphenous vein drain into

drains into femoral vein after passing through saphenous opening

what does small saphenous vein drain into

popliteal vein

popliteal lymph nodes location

popliteal fossa around popliteal vein

superficial inguinal lymph nodes

femoral triangle below inguinal ligament

deep inguinal lymph nodes

femoral sheath medial to femoral vein

small saphenous vein lymphatic vessels drain into

popliteal nodes

superficial lymphatic vessels accompanying great saphenous vein drain into

superficial inguinal nodes

deep lymphatic vessels accompanying deep veins drain into

popliteal nodes then deep inguinal nodes

boundaries of the femoral triangle

inguinal ligament, sartorius, adductor longus, iliopsoas and pectineus, fascia lata

contents of the femoral triangle

femoral nerve, artery, vein, lymph nodes

what movement does femoral sheath allow

hip movement