Editing Human leg (section)

=== Blood supply ===
{{See also|Superficial femoral artery|Arcuate artery of the foot}}
The arteries of the leg are divided into a series of segments.

In the pelvis area, at the level of the last [[lumbar vertebra]], the [[abdominal aorta]], a continuation the [[descending aorta]], splits into a pair of [[Common iliac artery|common iliac arteries]]. These immediately split into the [[internal iliac artery|internal]] and [[External iliac artery|external iliac arteries]], the latter of which descends along the medial border of the [[Psoas major muscle|psoas major]] to exits the pelvis area through the [[vascular lacuna]] under the [[inguinal ligament]].<ref name="Thieme-Atlas-464">''Thieme Atlas of Anatomy'' (2006), p. 464</ref>

The artery enters the thigh as the [[femoral artery]] which descends the medial side of the thigh to the [[adductor canal]]. The canal passes from the anterior to the posterior side of the limb where the artery leaves through the [[adductor hiatus]] and becomes the [[popliteal artery]].  On the back of the knee the popliteal artery runs through the [[popliteal fossa]] to the [[popliteal muscle]] where it divides into [[Anterior tibial artery|anterior]] and [[Posterior tibial artery|posterior tibial arteries]].<ref name="Thieme-Atlas-464" />

In the lower leg, the anterior tibial enters the extensor compartment near the upper border of the [[interosseus membrane]] to descend between the [[Tibialis anterior muscle|tibialis anterior]] and the [[Extensor hallucis longus muscle|extensor hallucis longus]]. Distal to the [[Superior extensor retinaculum of foot|superior]] and [[Inferior extensor retinaculum of foot|extensor retinacula of the foot]] it becomes the [[dorsalis pedis artery|dorsal artery of the foot]]. The posterior tibial forms a direct continuation of the popliteal artery which enters the flexor compartment of the lower leg to descend behind the [[medial malleolus]] where it divides into the [[Medial plantar artery|medial]] and [[Lateral plantar artery|lateral plantar arteries]], of which the posterior branch gives rise to the [[fibular artery]].<ref name="Thieme-Atlas-464" />

For practical reasons the lower limb is subdivided into somewhat arbitrary regions:<ref name="Platzer-412">Platzer (2004), p. 412</ref> The regions of the hip are all located in the thigh: anteriorly, the subinguinal region is bounded by the inguinal ligament, the sartorius, and the pectineus and forms part of the [[femoral triangle]] which extends distally to the adductor longus. Posteriorly, the gluteal region corresponds to the gluteus maximus. The anterior region of the thigh extends distally from the femoral triangle to the region of the knee and laterally to the tensor fasciae latae. The posterior region ends distally before the popliteal fossa. The anterior and posterior regions of the knee extend from the proximal regions down to the level of the tuberosity of the tibia. In the lower leg the anterior and posterior regions extend down to the malleoli. Behind the malleoli are the lateral and medial retromalleolar regions and behind these is the region of the heel. Finally, the foot is subdivided into a dorsal region superiorly and a plantar region inferiorly.<ref name="Platzer-412" />