Anatomy of the Lower Limb Flashcards
Mr L Reid
name the 6 regions of the lower limb
gluteal femoral knee leg ankle foot
what type of joint is the hip joint?
ball and socket
synovial
what are the actions of the hip joint? (4)
flexion-extension
abduction-aduction
medial-lateral rotation
circumduction
the ____ __ _____ articulates with the __________ in the hip joint
head of femur
acetabulum
name the 3 ligaments of the hip joint
iliofemoral
ischiofemoral
pubiofemoral
name the small ligament found within the hip joint itself
ligamentum teres of the femur
name the primary blood supply to the head of femur
medial circumflex femoral artery
what arteries are damaged in femoral neck fractures?
reticular arteries
what type of joint is seen in the knee complex?
modified synovial hinge joint
list the actions of the knee (2)
flexion-extension
slight rotation
name the 3 articulations of the knee complex
1x patellofemoral 2x tibiofemoral (medial and lateal)
how many extra capsular ligaments are there in the knee? name them.
- patellar
- lateral collateral (fibular)
- medial collateral (tibial)
name the two intra-articular ligaments of the knee complex.
- anterior cruciate - ACL
2. posterior cruciate - PCL
what are the lateral and medial menisci shaped like? what are they made of?
crescent
fibrocartilage
describe the Q angle changes in Genu varum and valgum (2)
Genu varum - decreased Q angle
Genu valgum - increased Q angle
what do nerves that enter/exit the pelvis and perineum travel through?
greater and lesser sciatic foramen
passageway for structures into the:
Gluteal region is via the what?
perineum is via the what?
gluteal region is via the greater sciatic foramen
perineum is via the lesser sciatic foramen
name the 2 ligaments forming these foramen (2)
sacrotuberous ligament
sacrospinous ligament
what level is the sciatic nerve?
L4-S3
what level is the pudendal nerve?
S2-S4
what level is the posterior cutaneous nerve of thigh?
S1-S3
how many superficial muscles of the gluteal region are there? name them
- Gluteus maximus
- Gluteus medius
- Gluteus minimus
- Tensor fascia latae
what is the action of the superficial muscles of the gluteal region? (3)
extensors, abductors and medial rotators of thigh
what are the superficial muscles of the gluteal region innervated by?
gluteal nerves
what muscle(s) of the gluteal region is supplied by the inferior gluteal nerve?
Gluteus maximus
what muscle(s) of the gluteal region is supplied by the superior gluteal nerve?
all others excluding Gluteus maximus
name the 4 deep muscles of the gluteal region
Piriformis
Obturator internus
Gemelli (Superior and Inferior)
Quadratus femoris
what is the action of the 4 deep muscles of the gluteal region? (2)
Lateral rotators of thigh and hip stabilisers
what innervates the deep muscles the gluteal region?
nerves of sacral plexus
reduced function of superior gluteal nerve function is known as what?
Trendelenberg Gait
the hip on the _____________ side will drop
contralateral
hip drop is due to weak hip _________ by the _______ _______
abduction by the gluteus medius
the sciatic nerve exits inferior to which muscle?
piriformis
what does the sciatic nerve supply in the gluteal region?
nothing
the sciatic nerve bifurcates into which 2 structures?
tibial nerve and common fibular nerve
the tibial nerve is ______ in size and lies ______ whereas the common fibular is _______ and lies more _______
tibial - larger and medial
common fibular - smaller and lateral
how many compartments do the thigh and leg have each? name them
3
thigh - anterior, medial and posterior
leg - anterior, posterior and lateral
describe compartment syndrome including cause, symptoms and treatment
increased pressure in enclosed space caused by swelling of tissue or fluid increase
affects leg function - muscles and nerves in the compartment
fasciotomy to relieve pressure
where are the flexors of the thigh and extensors of the leg found?
anterior compartment of the thigh
name the 4 muscles responsible for flexion of the thigh
- Pectineus
- Iliopsoas (psoas major/min + iliacus)
- Sartorius
- Rectus femoris
name the 4 muscles responsible for extension of the leg
- Rectus femoris
- Vastus lateralis
- Vastus medialis
- Vastus intermedius
what innervates the muscles in the anterior compartment of the thigh?
femoral nerve (L2, L3, L4) except psoas major - (L1, L2, L3)
list the boundaries of the femoral triangle:
superior - medial - lateral - floor - roof -
superior - Inguinal ligament medial - Lateral border of adductor longus lateral - Medial border of sartorius floor - Iliopsoas and pectineus roof - Deep fascia (fascia lata)
list the contents of the femoral triangle lateral to medial
femoral Nerve
femoral Artery
femoral Vein
lYmphatics
NAVY
name the muscles of the medial compartment of the thigh (5)
Adductor longus Adductor brevis Adductor magnus Gracilis Obturator externus
what innervates the muscles of the medial compartment of the thigh?
all obturator nerve (L2, L3, L4)
what is the exception of innervation?
hamstring part of the adductor magnus - tibial nerve
what is the action of the muscles of the medial compartment of the thigh?
adductors of the thigh
name the muscles of the posterior compartment of the thigh (3)
Semitendinosus
Semimembranosus
Biceps femoris
what is the actions of the muscles of the posterior compartment of the thigh? (2)
extensors of thigh
flexors of leg
name the nerve and part of the nerve which innervates the posterior compartment of the thigh
tibial division of sciatic nerve (L5, S1, S2)
what muscle is the exception in the posterior compartment of the thigh and is innervated by the common fibular division of the sciatic nerve?
short head of biceps femoris
rest of posterior thigh is tibial division of sciatic nerve
name the 3 superficial muscles of the posterior compartment of the leg
- Gastrocnemius
- Soleus
- Plantaris
what is action of the superficial muscles of the posterior aspect of the leg?
plantarflexors of the ankle
name the 4 deep muscles of the posterior compartment of the leg
- Popliteus
- Flexor hallucis longus
- Flexor digitorum longus
- Tibialis posterior
what is the actions of the 4 deep muscles of the posterior compartment of the leg? (2)
flexors of toes
plantar flexors of ankle
what innervates the muscles of the posterior compartment of the leg?
tibial nerve
name the 4 muscles of the anterior compartment of the leg
- Tibialis anterior
- Extensor digitorum longus
- Extensor hallucis longus
- Fibularis tertius
what nerve innervates the muscles of the anterior compartment of the leg?
deep fibular nerve (L4, L5)
what is the actions of the 4 muscles of the anterior compartment of the leg? (2)
dorsiflexors of ankle
extensors of toes
name the 2 muscles of the lateral compartment of the leg
fibulas longus
fibulas brevis
what nerve innervates the 2 lateral leg muscles?
superficial fibular nerve (L5, S1, S2)
what is the actions of the 2 muscles of the lateral compartment of the leg?
evert the foot and weakly plantarflex ankle
Loss of the muscle action in _______ compartment of the leg and
reduced or absent ____________ is seen in foot ____
anterior compartment
dorsiflextion
foot drop
what is the other phrase for foot drop?
deep fibular nerve palsy
name the boundaries of the popliteal fossa
superolateral -
superomedial -
inferior -
roof -
Superolaterally - Biceps femoris
Superomedially -
Semimembranosus
Inferiorly - Gastrocnemius
Roof - Popliteal fascia
what is the other name given to the calcanea tendon?
achilles tendon
the calcaneal tendon is __cm long and attaches to the _________ __________ of the _________
15cm long
attaches to the calcaneal tuberosity of the calcaneus
the calcaneal tendon is the tendon of which 2 muscles?
gastrocnemius and soleus
plantar flexion is the normal result in what reflex?
‘ankle jerk’ reflex
what nerve roots is the ankle jerk reflex testing?
S1 and S2
___________ lymphatics
follow _________ veins, drain to superficial ________ _____ _____, then _______ _____ lymph nodes
Superficial lymphatics
follow saphenous veins, drain to superficial inguinal lymph nodes, then external iliac lymph nodes
Deep lymphatics
follow ____ veins,
____ _______ lymph nodes then _______ _____ lymph nodes
Deep lymphatics
follow deep veins,
deep inguinal lymph nodes then external iliac lymph nodes
what lymphatics are from external to cannon iliac?
lumbar lymphatics
who has a small penis?
ben porter