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Cruciate Anastomosis
The cruciate anastomosis is a circulatory anastomosis in the upper thigh of the inferior gluteal artery, the lateral and medial circumflex femoral arteries, and the first perforating artery of the profunda femoris artery. Also, the anastomotic branch of the posterior branch of the obturator artery.Henri Rouviere 11Ed The cruciate anastomosis is clinically relevant because if there is a blockage between the femoral artery and external iliac artery, blood can reach the popliteal artery by means of the anastomosis. The route of blood is through the internal iliac, to the inferior gluteal artery, to a perforating branch of the deep femoral artery, to the lateral circumflex femoral artery, then to its descending branch into the superior lateral genicular artery and thus into the popliteal artery. Structure The cruciate anastomosis is so-called because it resembles a cross. Its four components are: * Inferior gluteal artery * Transverse branches of the lateral circumflex femoral art ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circulatory Anastomosis
A circulatory anastomosis is a connection (an anastomosis) between two blood vessels, such as between arteries (arterio-arterial anastomosis), between veins (veno-venous anastomosis) or between an artery and a vein (arterio-venous anastomosis). Anastomoses between arteries and between veins result in a multitude of arteries and veins, respectively, serving the same volume of tissue. Such anastomoses occur normally in the body in the circulatory system, serving as backup routes for blood to flow if one link is blocked or otherwise compromised, but may also occur pathologically. Physiologic Arterio-arterial anastomoses include actual (e.g., palmar and plantar arches) and potential varieties (e.g., coronary arteries and cortical branch of cerebral arteries). There are many examples of normal arterio-arterial anastomoses in the body. Clinically important examples include: *Circle of Willis (in the brain) *Coronary: anterior interventricular artery and posterior interventricular art ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thigh
In human anatomy, the thigh is the area between the hip (pelvis) and the knee. Anatomically, it is part of the lower limb. The single bone in the thigh is called the femur. This bone is very thick and strong (due to the high proportion of bone tissue), and forms a ball and socket joint at the hip, and a modified hinge joint at the knee. Structure Bones The femur is the only bone in the thigh and serves as an attachment site for all muscles in the thigh. The head of the femur articulates with the acetabulum in the pelvic bone forming the hip joint, while the distal part of the femur articulates with the tibia and patella forming the knee. By most measures, the femur is the strongest bone in the body. The femur is also the longest bone in the body. The femur is categorised as a long bone and comprises a diaphysis, the shaft (or body) and two epiphysis or extremities that articulate with adjacent bones in the hip and knee. Muscular compartments In cross-section, the thigh is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inferior Gluteal Artery
The inferior gluteal artery (sciatic artery), the smaller of the two terminal branches of the anterior trunk of the internal iliac artery, is distributed chiefly to the buttock and back of the thigh. It passes down on the sacral plexus of nerves and the piriformis muscle, behind the internal pudendal artery. It passes through the lower part of the greater sciatic foramen. It escapes from the pelvis between piriformis muscle and coccygeus muscle. It then descends in the interval between the greater trochanter of the femur and tuberosity of the ischium. It is accompanied by the sciatic nerve and the posterior femoral cutaneous nerves, and covered by the gluteus maximus. It continues down the back of the thigh, supplying the skin, and anastomosing with branches of the perforating arteries. Additional images File:Gray544.png, The arteries of the gluteal and posterior femoral regions. File:Gray829.png, Dissection of side wall of pelvis showing sacral and pudendal plexuses. See a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lateral Circumflex Femoral Artery
The lateral circumflex femoral artery, also known as the lateral femoral circumflex artery, or the external circumflex artery, is an artery in the upper thigh. It is usually a branch of the profunda femoris artery, and produces three branches. It is mostly distributed to the muscles of the lateral thigh. Structure Origin The lateral femoral circumflex artery usually arises from the lateral side of the profunda femoris artery, but may occasionally arise directly from the femoral artery. It is the largest branch of the profunda femoris artery. Course and relations The lateral circumflex femoral artery usually courses anterior to the femoral neck. It passes horizontally between the divisions of the femoral nerve. It passes posterior to the sartorius muscle and rectus femoris muscle. It passes laterally across the hip joint capsule. It divides into ascending, transverse, and descending branches. Branches The lateral circumflex femoral artery has three branches: # The ascending ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medial Circumflex Femoral Artery
The medial circumflex femoral artery (internal circumflex artery, medial femoral circumflex artery) is an artery in the upper thigh that arises from the profunda femoris artery''.'' Damage to the artery following a femoral neck fracture may lead to avascular necrosis (ischemic) of the femoral neck/head. Structure Origin The medial femoral circumflex artery arises from the posterior medial aspect of the profunda femoris artery''.'' The medial femoral circumflex artery may occasionally arise directly from the femoral artery. Course and relations It winds around the medial side of the femur, passing first between the pectineus and iliopsoas muscles, and then between the obturator externus and the adductor brevis muscles. Branches At the upper border of the adductor brevis it gives off two branches: * The '' ascending branch'' * The ''descending branch'' descends beneath the adductor brevis, to supply it and the adductor magnus; the continuation of the vessel passes backward ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perforating Artery
The perforating arteries, usually three in number, are so named because they perforate the tendon of the Adductor magnus to reach the back of the thigh. They pass backward close to the linea aspera of the femur under cover of small tendinous arches in the muscle. The first is given off above the Adductor brevis, the second in front of that muscle, and the third immediately below it. First The ''first perforating artery'' (a. perforans prima) passes posteriorly between the Pectineus and Adductor brevis (sometimes it perforates the latter); it then pierces the Adductor magnus close to the linea aspera. It gives branches to the Adductores brevis and magnus, Biceps femoris The biceps femoris () is a muscle of the thigh located to the posterior, or back. As its name implies, it has two parts, one of which (the long head) forms part of the hamstrings muscle group. Structure It has two heads of origin: *the ''long h ..., and Gluteus maximus, and anastomoses with the inferior glut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Profunda Femoris
The deep artery of the thigh, (profunda femoris artery or deep femoral artery) is a large branch of the femoral artery. It travels more deeply (posteriorly) than the rest of the femoral artery. Structure The deep artery of the thigh branches off the posterolateral side of the femoral artery soon after its origin. It travels down the thigh closer to the femur than the femoral artery. It runs between the pectineus muscle and the adductor longus muscle. It runs on the posterior side of adductor longus muscle. It pierces the adductor magnus muscle, and may be known as the fourth perforating artery as it continues. The deep femoral artery does not leave the thigh. Branches The deep artery of the thigh gives off the following branches: * Lateral circumflex femoral artery. * Medial circumflex femoral artery. * 3 Perforating arteries - perforate the adductor magnus muscle to the posterior and medial compartments of the thigh to connect with the branches of the popliteal artery behind t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superior Lateral Genicular Artery
The lateral superior genicular artery is a branch of the popliteal artery that supplies a portion of the knee joint. Course It passes above the lateral condyle of the femur, beneath the tendon of the Biceps femoris. Branching It divides into a superficial and a deep branch; the superficial branch supplies the vastus lateralis, and anastomoses with the descending branch of the lateral femoral circumflex and the lateral inferior genicular arteries; the deep branch supplies the lower part of the femur and knee-joint, and forms an anastomotic arch across the front of the bone with the highest genicular and the medial inferior genicular arteries. Additional images File:Thigh arteries schema.svg, Schema of the arteries arising from the external iliac and femoral arteries. See also * Patellar anastomosis The patellar network (circulatory anastomosis around the knee-joint, patellar anastomosis, genicular anastomosis, articular vascular network of knee or rete articulare genusht ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Popliteal Artery
The popliteal artery is a deeply placed continuation of the femoral artery opening in the distal portion of the adductor magnus muscle. It courses through the popliteal fossa and ends at the lower border of the popliteus muscle, where it branches into the anterior tibial artery, anterior and Posterior tibial artery, posterior tibial arteries. The deepest (most anterior) structure in the fossa, the popliteal artery runs close to the joint capsule of the knee as it spans the Intercondylar fossa of femur, intercondylar fossa. Five genicular branches of the popliteal artery supply the capsule and ligaments of the knee joint. The genicular arteries are the superior lateral, superior medial, middle, inferior lateral, and inferior medial genicular arteries. They participate in the formation of the periarticular genicular anastomosis, a network of vessels surrounding the knee that provides collateral circulation capable of maintaining blood supply to the leg during full knee flexion, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inferior Gluteal Artery
The inferior gluteal artery (sciatic artery), the smaller of the two terminal branches of the anterior trunk of the internal iliac artery, is distributed chiefly to the buttock and back of the thigh. It passes down on the sacral plexus of nerves and the piriformis muscle, behind the internal pudendal artery. It passes through the lower part of the greater sciatic foramen. It escapes from the pelvis between piriformis muscle and coccygeus muscle. It then descends in the interval between the greater trochanter of the femur and tuberosity of the ischium. It is accompanied by the sciatic nerve and the posterior femoral cutaneous nerves, and covered by the gluteus maximus. It continues down the back of the thigh, supplying the skin, and anastomosing with branches of the perforating arteries. Additional images File:Gray544.png, The arteries of the gluteal and posterior femoral regions. File:Gray829.png, Dissection of side wall of pelvis showing sacral and pudendal plexuses. See a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trochanteric Anastomosis
The trochanteric anastomosis provides circulation around the head of the femur. It includes the superior gluteal artery and the medial and lateral circumflex femoral arteries (the former of which provides the main supply to the femur). It is formed by the deep branch of superior gluteal artery, with ascending branches of both lateral and medial circumflex femoral arteries. The inferior gluteal artery usually joins the anastomosis. Branches from the anastomosis passes along the femoral neck The femoral neck (femur neck or neck of the femur) is a flattened pyramidal process of bone, connecting the femoral head with the femoral shaft, and forming with the latter a wide angle opening medialward. Structure The neck is flattened from ... with the retinacular fibers of the capsule. See also * Cruciate anastomosis Arteries {{circulatory-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |