Lower Limb Anatomy - Hard Version Flashcards
what is the femoral region
the thigh
how many regions are there of the lower limb
6
name the superficial muscles of the gluteal region
tensor fascia latae, gluteus maximus, gluteus medius, gluteus minimus
function of the superficial muscles of the gluteal region
medially rotate, abduct and extend the thigh
what is the innervation to the superficial muscles of the gluteal region
all superior gluteal except gluteus maximus; inferior gluteal
what causes trendelenberg’s gait
damage to superior gluteal nerve
name the deep muscles of the gluteal region
piriformis, obturator internus, gemelli and quadratus femoris
what is the function of the deep muscles of the gluteal region
laterally rotate thigh, hip stabilisers
what is the innervation of the deep muscles of the gluteal region
sacral plexus nerves
how do nerves enter/leave the pelvis
greater sciatic foramen
how do nerves enter/leave the perineum
lesser sciatic foramen
what ligaments form the greater and lesser sciatic foraminae
sacrotuberous and sacrospinous ligaments
where is the sacrotuberous ligament
between ischial tuberosity and sacrum
where is the sacrospinous ligament
between ischial spine and sacrum
which quarter of the gluteal region is best for injections and why
upper lateral quarter since least likely to hit sciatic nerve
which spinal nerves contribute to the sciatic nerve
L4-S3
which spinal nerves contribute to the pudendal nerve
S2-S4
which spinal nerves contribute to the posterior cutaneous nerve of the thigh
S1-S3
what is supplied by the sciatic nerve
posterior thigh, leg muscles, foot muscles, most of the skin
what is supplied by the pudendal nerve
perineum
what is supplied by the posterior cutaneous nerve of the thigh
skin over posterior thigh, popliteal fossa, lateral perineum and upper medial thigh
what are the names of the branches of the sciatic nerve
tibial division of the sciatic nerve and common fibular division of the sciatic nerve
what is the other name or the common fibular division of the sciatic nerve
common perineal division of the sciatic nerve
put in order of lateral to medial:
posterior cutaneous nerve of the thigh, pudendal, sciatic
sciatic, posterior cutaneous nerve of thigh, pudendal
where does the sciatic nerve exit the greater sciatic foramen
most lateral structure exiting, inferior to piriformis
what is the arterial supply to the sciatic nerve
artery to the sciatic nerve
where does the sciatic nerve bifurcate
posterior distal thigh
what are the visual differences between the tibial nerve and the common fibular nerve
tibial nerve: larger, medial
common fibular: smaller, lateral
what is the superior border of the femoral triangle
inguinal ligament
what is the medial border of the femoral triangle
lateral border of adductor longus
what is the lateral border of the femoral triangle
medial border of sartorius
what is the floor of the femoral triangle
iliopsoas and pectineus
what is the roof of the femoral triangle
fascia lata
what are the contents of the femoral triangle and in what order from lateral to medial
femoral nerve, femoral artery, femoral vein, lymphatics
where is the inguinal ligament
ASIS to pubic tubercle
what is the inguinal ligament
thickened inferior edge of internal oblique aponeurosis
what is the longest muscle in the body
sartorius
what structure separates the muscle compartments of the leg and what is it composed of
intermuscular septum composed of deep fascia
what procedure is used to treat acute compartment syndrome
fasciotomy
name the compartments of the thigh
anterior, posterior, medial compartments
name the compartments of the leg
anterior, posterior, lateral compartments
commonalities with muscle compartments
generally similar actions and same nerve supply
name the muscles of the anterior compartment of the thigh
pectineus, iliopsoas, sartorius, quadriceps femoris
what is the function of pectineus
flexes thigh
what is the function of iliopsoas
flexes thigh
what is the function of sartorius
flexes thigh
what is the function of quadriceps femoris
extends leg
what is the innervation to the muscles in the anterior compartment of the thigh
femoral nerve except psoas major of iliopsoas (supplied by anterior rami of L1,L2,L3)
which spinal nerves contribute to the femoral nerve
L2, L3, L4
name the muscles in the medial compartment of the thigh
adductor longus adductor brevis adductor magnus gracilis obturator externus
what is the action of the muscles in the medial compartment of the thigh
adduct the thigh
what is the motor supply the the muscles of the medial compartment of the thigh
obturator nerve except hamstring part of adductor magnus (tibial nerve)
which spinal nerves contribute to the obturator nerve
L2, L3, L4
name the muscles of the posterior compartment of the thigh
semitendinosus, semimembranosus, biceps femoris
what is the action of the muscles of the posterior compartment of the thgigh
extend the thigh and flex the leg
what is the innervation of the muscles of the posterior compartment of the thigh
tibial division of sciatic nerve except short head of biceps femoris (common fibular division of sciatic)
what spinal nerves contribute to the tibial division of the spinal nerve
L5, S1, S2
name the muscles of the anterior compartment of the leg
tibialis anterior
extensor digitorum longus
extensor hallucis longus
fibularis tertius
what is the action of the muscles of the anterior compartment of the leg
dorsiflex ankle & extend toes
what is the supply to the muscles of the anterior compartment of the leg
deep fibular nerve
what spinal nerves contribute to the deep fibular division of the sciatic nerve
L4, L5
name the muscles of the lateral compartment of the leg
fibularis longus
fibularis brevis
what is the action of the muscles of the lateral compartment of the leg
evert foot & weakly plantarflex ankle
what is the supply to the muscles of the lateral compartment of the leg
superficial fibular nerve
what spinal nerves contribute to the superficial fibular division of the sciatic nerve
L5, S1, S2
name the division of the common fibular nerve
superficial and deep fibular nerves
name the muscles of the superficial group of the posterior compartment of the leg
gastrocnemius
soleus
plantaris
name the muscles of the deep group of the posterior compartment of the leg
popliteus
flexor hallucis longus
flexor digitorum longus
tibialis posterior
what is the action of the superficial group of the posterior compartment of the leg
plantarflex ankle
what is the supply to the superficial group of the posterior compartment of the leg
tibial nerve
what is the action of the deep group of the posterior compartment of the leg
flex toes & plantarflex ankle
what is the supply to the deep group of the posterior compartment of the leg
tibial nerve
what part of the hip is involved in the hip joint
acetabulum
what type of joint is the hip joint
synovial joint
what are the possible movements of the hip joint
flexion-extension
abduction-adduction
medial-lateral rotation
circumduction
what are the components of the hip joint
joint capsule made of outer fibrous layer and inner membranous layer
name the ligaments that strengthen the hip joint capsule
iliofemoral
pubofemoral
ischiofemoral
what are the iliofemoral, pubofemoral and ischiofemoral ligaments formed of
fibrous layer of joint capsule
what is the ligamentum teres
ligament that carries arterial supply to head of femur
name the arteries involved in the blood supply to the hip joint
medial circumflex femoral artery
lateral circumflex femoral artery
artery to head of femur
what artery does the medial circumflex femoral artery arise from
deep femoral artery
what artery does the lateral circumflex femoral artery arise from
deep femoral artery
what are names of the branches of the medial and lateral circumflex femoral arteries
retinacular arteries
what artery does the artery to head of femur arise from
branch of obturator
what is the connection between the medial and lateral circumflex femoral arteries
anastomose around head of femur
what articulations are involved in the knee joint
2X femerotibial
1X femeropatellar
what type of joint is the knee joint
synovial
what are the components of the knee joint
external fibrous layer and inner membraneous layer (bursae extensions)
name the ligaments of the knee joint
posterior cruciate anterior cruciate medial menisci lateral menisci patellar ligament lateral collateral ligament medial collateral ligament
what are the menisci made of
fibrocartilage
what shape are the menisci
crescent shape
which knee ligaments are intra-articular
anterior cruciate and posterior ligament
does the anterior cruciate ligament go lateral to medial or medial to lateral
lateral to medial
what is the supero-lateral border of the popliteal fossa
biceps femoris
what is the supero-medial border of the popliteal fossa
semimembranosus
what is the inferior border of the popliteal fossa
gastrocnemius
what is the roof of the popliteal fossa
popliteal fascia
what are the contents of the popliteal fossa
fat, small saphenous vein, popliteal vessels, tibial nerve, common fibular nerve
what is the other name for the Achilles tendon
calcaneal tendon
what forms the Achilles tendon
tendons of gastrocnemius and soleus
where does the Achilles tendon attach
calcaneal tuberosity of the calcaneus
how can you test the achilles tendon and what is the normal result
ankle jerk reflex, plantarflexion
what nerves is the ankle jerk reflex testing
S1, S2 nerve roots
where do superficial lymphatics of the lower lib drain
to superficial inguinal lymph nodes then external iliac lymph nodes