Lecture 21, Gluteal Bursae, Sciatic Nerve Components & Popliteal Fossa Flashcards
Gluteal Bursae
gluteal bursae, flattened membranous sacs containing a capillary layer of synovial fluid, separate the gluteus maximus from adjacent structure. The bursae are located in areas subject to friction — for example, between a muscle and a bony prominence — to reduce friction and permit free movement. The bursae associated with the gluteus maximus as follows:
- the trochanteric bursa separates the deep aspect of the glutues maximus from the greater trochanter of the femur
- the ischial bursa separates the inferior border of the gluteus maximus from the ischial tuberosity
- the gluteofemoral bursa separates the iliotibial tract from the superior part of the proximal attachment of the vastus lateralis
Sciatic nerve: Tibial nerve & Common Fibular nerve
ADD
medial genicular arteries (Fig. 7.280}. They ofthe genicular
a anastomosis around provides collateral circulation capable of
’The
space posterior vessels and nerves
fossa.
mostly
7.28). All
leg
bowided
* Biceps
* Semimembranosus superomedially, medial to which
the
* Lateral and medial heads
erallyand respectively
* Skin and popliteal fascia posteriorly (roof)
The popliteal vein is formed inferior border of the popliteus as a continuation of the posterior tibial veins. Throughout its vein lies superficial to and in the same fibrous sheath as the popliteal
(Fig. 7.28B). popliteal vein becomes the
femoral vein as it traverses the adductor hiatus. The small saphenous vein posterior aspect of the lateral malleolus to the popliteal fossa, where it
deep popliteal fascia and enters the popliteal vein (Fig. 7.28A).
mper:&cial popliteal lymph nodes are usually
* Popliteal surface knee joint,
muscle
femur,
capsule
’The contents
popliteal
in.elude the following (Fig. 7.28B):
* Termination
small saphenous vein
* Popliteal
and vein
branches and
* libial and common fibular
small and lie lymph nodes
subcutaneous deep popli- vessels and receive lymph
* Posterior
* Popliteal lymph * Fat
