Anatomy of the Lower Limb Flashcards
Name the 6 regions of the lower limb
gluteal femoral knee leg ankle foot
functions of the lower limb
support body weight
balance
locomotion
where does the femoral region start and end
starts at pelvis, ends at knee
name the superficial muscles of the gluteal region
gluteus minimus
gluteus medius
gluteus maximus
tensor fascia latae
what is the function of the superficial gluteal muscles?
extension, abduction and medial rotation of the thigh
innervation of superficial gluteal muscles?
superior gluteal EXCEPT gluteus maximus (inferior gluteal)
which nerve is damaged in trendelenburg’s gait?
superior gluteal nerve
what does trendelenburg’s gait present as and why?
limp due to improper alignment of the pelvis
name the deep muscles of the gluteal region
piriformis
obturator internis
quadratus femoris
gemelli
what is the function of the deep gluteal muscles
lateral rotators of thigh and hip stabilisers
name the innervation of the deep gluteal nerves
sacral plexus
where does the sacrospinous ligament connect to and from
from sacrum to spine
where does the sacrotuberous ligament connect to and from?
from sacrum to ischial tuberosity
where should injections in the gluteal region be?
upper lateral quadrant
through which foramen do pelvic structures pass through?
greater sciatic
through which foramen do perineal structures pass through?
lesser sciatic
what forms the greater and lesser foraminae
sacrotuberous and sacrospinous ligaments
at what nerve levels does the sciatic nerve enter?
L4-S3
name the 2 branches of the sciatic nerve
tibial and common fibular
what does the sciatic nerve and its branches supply?
posterior thigh, leg and foot muscles, most of the skin
principle nerve to the perineum
pudental nerve
at what nerve levels does the pudental nerve enter?
S2, 3, 4
name the 3 main nerves of the gluteal region
pudental
sciatic
posterior cutaneous nerve of the thigh
what does the posterior cutaneous nerve of the thigh innervate
skin over posterior thigh, popliteal fossa, lateral perineum, upper medial thigh
what is the most lateral structure to exit the greater sciatic foramen
sciatic nerve
the sciatic nerve exits the sciatic foramen inferior to which muscle?
piriformis
where does the sciatic nerve typically bifurcate
distal thigh
name the superior border of the femoral triangle
inguinal ligament
name the medial border of the femoral triangle
lateral border of adductur longus
name the lateral border of the femoral triangle
medial border of sartorius muscle
which structures constitute the “floor” of the femoral triangle
iliopsoas and pectineus
name the contents of the femoral triangle
femoral Nerve
femoral Artery
femoral Vein
Lymphatics
what forms the inguinal ligament
thickened edge of external oblique aponeurosis
what is the longest muscle in the body
sartorius
what happens in compartment syndrome
increased pressure in leg stopping muscles and nerves from functioning
how is compartment syndrome treated
fasciotomy to relieve pressure
name the 3 compartments of the thigh
medial, anterior, posterior
name the 3 compartments of the leg
lateral, anterior, posterior
main function of the muscles of the anterior compartment of the thigh?
flexion
extension (quadriceps femoris only)
name the muscles of the anterior compartment of the thigh
pectineus
iliopsoas
sartorius
quadriceps femoris
name the innervation of the muscles of the anterior compartment of the thigh
femoral nerve
main function of the muscles of the medial compartment of the thigh?
adduction
name the muscles of the medial compartment of the thigh
adductor longus adductor brevis adductor magnus gracilis obturator externis
what is the nerve supply of the muscles of the medial compartment of the thigh
obturator nerve tibial nerve (hamstring part of adductor longus)
which component of the femoral triangle is not in the femoral sheath
femoral nerve
main function of the muscles of the posterior compartment of the thigh
extension of thigh
flexion of leg
name the muscles of the posterior compartment of the thigh
semitendinosus
semimembranosus
biceps femoris
innervation of the muscles of the posterior compartment of the thigh
tibial division of sciatic nerve EXCEPT short head biceps femoris (common fibular)
main function of the anterior compartment of the leg
dorsiflexion of ankle
extension of toes
name the muscles of the anterior compartment of the leg
tibialis anterior
extensor digitorum longus
extensor hallicus longus
fibularis tertius
what innervates the muscles of the anterior compartment of the leg
fibular nerve
what do the muscles of the lateral compartment of the leg do?
evert foot
plantarflex ankle slightly
name the muscles of the lateral compartment of the leg
fibularis longus
fibularis brevis
what innervates the muscles of the lateral compartment of the leg
superficial fibular nerve
where does the common fibular nerve run down
lateral leg
which compartment contains superficial and deep regions?
posterior compartment of leg
what does the superficial muscle group of the posterior compartment of the leg do?
plantarflexes the ankle
name the nerves of the superficial muscle group of the posterior compartment of the leg
gastrocnemius
soleus
plantaris
what innervates the superficial muscle group of the posterior compartment of the leg
tibial nerve
what does the deep muscle group of the posterior compartment of the leg
flexes toes and plantarflexes ankle
name the muscles of the deep muscle group of the posterior compartment of the leg
popliteus
flexor hallucis longus
flexpr digitorum longus
tibialis posterior
what innervates the deep muscle group of the posterior compartment of the leg
tibial nerve
what does hallucis mean
big toe
name the 4 ways in which the hip joint can move
flexion-extension
abduction-adduction
medial-lateral rotation
circumduction
most likely area of the femur to break and why?
neck of femur as it is the weakest and thinnest
what does a ligament do?
connects bone to bone
what does a tendon do?
connects muscle to bone
name the 3 ligaments associated with the hip joint?
iliofemoral
pubofemoral
ischiofemoral
blood supply to hip joint?
medial and lateral circumflex femoral arteries
how many articulations does the knee joint have?
3
name the articulations of the knee joint
2 femorotibial
1 femorpatellar
main movement of the knee joint?
flexion-extension
what kind of joint is the knee joint?
synovial hinge joint
name the ligaments of the knee joint
lateral/medial collateral ligament ant/post cruciate, menisci
what muscle lies inferior to the popliteal fossa?
gastrocnemius
another name for achilles tendon?
calcaneal
what makes up the calcaneal tendon?
gastrocnemius and soleus
where do the superficial lymohatics of the leg drain?
superficial inguinal lymph nodes
where do the deep lymphatics of the leg drain?
deep inguinal/external iliac lymph nodes