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Anatomy Posterior Thigh and Popliteal Fossa
KYCOM Block 4
58
Anatomy
Graduate
12/03/2012

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Term
what are the muscles of the posterior compartment of the thigh
Definition
hamstring
Term
what are the muscles that make up the hamstring
Definition
biceps femoris, semitendinosus, semimembranosus
Term
what innervates the posterior compartment muscles
Definition
tibial division of sciatic nerve except short head of biceps femoris which is the common fibular division
Term
what is the origin of the long head of the biceps femoris
Definition
ischial tuberosity
Term
what is the origin of the short head of the biceps femoris
Definition
linea aspera and lateral supercondylar line of the femur
Term
what is the isnertion of the biceps femoris
Definition
common tendon on head of fibula
Term
what innervates the biceps femoris long head
Definition
tibial division of sciatic nerve
Term
what innervates the biceps femoris short head
Definition
common fibular part of sciatic n
Term
what is the action of the biceps femoris
Definition
flexion and lateral rotation of the knee, extension at the thigh and hip (long head only)
Term
what is the origin of the semitendinosus
Definition
ischial tuberosity
Term
what is the insertion of the semitendinosus
Definition
pesanserinus
Term
what is the pes anserinus
Definition
shared expansion between satorius, feacilis, and semitendioisus that all insert on upper medial tibial shaft
Term
what is the innervation of the semitendinosus
Definition
tibial division sciatice nerve
Term
what is the action of the semitendinosus
Definition
flexin and medial rotation of the kneed, extension ot hip
Term
what is the origin of the seminembrenosus
Definition
ischial tuberosity
Term
what is the insertion of the semimbranosus
Definition
posterior medial condyle of the tibia, some fibers go into the oblique popliteal ligament
Term
where is the oblique popliteal ligament, what does it do
Definition
fibers come out of the tendon to reinforce posterior capsule of the knee joint
Term
what is the innervation of the seminembrenosus
Definition
tibal part of sciatic nerve
Term
what is the action of the seminembrenosus
Definition
flexion and medial rotation of the leg at knee, extension at hip
Term
describe the path of the sciatic nerve
Definition
deep to long biceps femoris, at midline of thig it is overlaped by margins of ciceps femoris and semimembranosus, anterior to adductus magnus
Term
how does the sciatic nerve end
Definition
divides into dibial and common fibular (peroneal) branches
Term
what are the branches of the sciatic nerve
Definition
tibial, common fibular, muscular
Term
what are the muscular branches of the tibial nerve
Definition
long biceps femoris head, semitendinosis, semimembranosus, hamstring part of adductor magnus
Term
what are the muscualr branches of the common fibular n
Definition
short head of the biceps femoris
Term
where is the popliteal fossa located
Definition
posterior to knee joint
Term
what is the superiolateral wall of the popliteal fossa
Definition
biceps femoris
Term
what is the superiomedial wall of the popliteal fossa
Definition
semimembranosus and semitendinosus
Term
what is the inferior lateral wall of the popliteal fossa
Definition
plantaris and lateral part of gastrochemius
Term
what is the inferior medial wall of the popliteal fossa
Definition
medial head off the gastrochemius
Term
what is the poterior wall / roof of the popliteal fossa
Definition
skin and fascia
Term
what is the anterior wall / floor of the popliteal fossa
Definition
femur surface, posterior knee joint 9articular capsule), popliteus muscle
Term
what are the contents of the popliteal fossa
Definition
popliteal vessels, termination of small saphenous v, tibial n, common fibular n, terminal posterior cutaneous nerve of the thigh, genicular branch of obturator n posterior branch, popliteal nodes
Term
where does the popliteal a begin
Definition
at adductor hiatus form the femoral a
Term
where does the popliteal a end
Definition
at the inferior popliteus muscle then divides into anterior and posterior tibial a
Term
where is the popliteal a in the popliteal fossa
Definition
on the floor
Term
where is the tibial nerve in relation to the popliteal a
Definition
the nerve is posterior and lateral
Term
what are the branches of the popliteal a
Definition
muscular, genicular
Term
what are the muscular branches of the popliteal a
Definition
gastrocnemius, soleus, plantaris, distal hamstring
Term
what are the genicular branches
Definition
2 superior (medial and lateral), 2 inferior (medial and lateral), 1 middle
Term
what does the genicular artery supply
Definition
knee joint
Term
what forms the popliteal vein
Definition
anterior and posterior tibial vein
Term
where does the popliteal vein end
Definition
adductor hiatus renamed into femoral v
Term
what are the branches of the popliteal v
Definition
correspond to the popliteal a, gets smaller scaphenous v
Term
what surrounds the popliteal nodes
Definition
CT and fat
Term
what do the popliteal nodes recieve
Definition
superificial vessels from lateral foot and leg by small scaphenous vein, vessels with anterior and posterior tibial vessels (deep foot and leg)
Term
where do the efferent vessesl from the popliteal nodes go
Definition
popliteal and femoral vessels to deep inguinal nodes
Term
describe the path of the tibial nerve
Definition
enters posterior compartment via the popliteal fossa deep to arch of soleus muscle
Term
what are the branches of the tibial nerve in the popliteal fossa
Definition
muscular, articular to knee, medial sural cutaneous
Term
what are the muscular branches of the tibial nerve
Definition
medial and lateral gastrochemius, soleus, plantaris, popliteus
Term
what does the medial sural cutaneous branch do
Definition
joins sural communicating branch from the lateral sural cutaneous nerve making the sural nerve
Term
what is the sural nerve by
Definition
small scaphenous vein
Term
describe the path of the sural nerve
Definition
between 2 heads of the gastrocinemius, posterior to calcaneal tendon, posterior then inferior to lateral malleolus, to the lateral border of the foor and little toe
Term
what does the sural nerve supply
Definition
skin of posterior lateral leg, lateral foot and toe border
Term
describe the path of the common fibular n
Definition
inferior and lateral in popliteal fossa by medial biceps femoris, leaves fossa superior to lateral head of fastrocenemius, lateral to fibular neck, deep to fibularis longus
Term
what are the branches of the common fibular n
Definition
superificial and deep fibular, lateral sural cutanrous
Term
what does the lateral sural cutaneous nerve supply
Definition
skin of upper lateral leg
Term
what are the branches of the lateral sural cutaneous n
Definition
sural communicating branch, articular branch to knee
Term
what does the sural commonicating branch do
Definition
join medial sural cutaneous forming sural nerve
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