17-Vascular Anatomy of Lower Limb PDF

Color Code Vasculature of Lower Limb Important Doctors Notes Notes/Extra explanation Editing File Objectives List the main arteries of the lower limb. Describe their origin, course distribution & branches. List the main arte...

Color Code Vasculature of Lower Limb Important Doctors Notes Notes/Extra explanation Editing File Objectives List the main arteries of the lower limb. Describe their origin, course distribution & branches. List the main arterial anastomosis. List the sites where you feel the arterial pulse. Differentiate the veins of LL into superficial & deep Describe their origin, course & termination and tributaries Some related clinical points Overview of the lecture: Arteries Veins Arteries Of Lower Limb Extra (Lower limp)  Femoral artery /vein Femoral Artery At the inguinal ligament: It is the main arterial supply to the lower limb. The vein lies medial to Origin: the artery. It is the continuation of the External iliac artery. At the apex of the Beginning: femoral triangle: How does it enter the thigh? The vein lies posterior to Behind the inguinal ligament (it is btw anterior superior iliac the artery. spine & pubic tubercle), midway at the midinguinal point ‫(هنا‬ At the opening in the ‫ يصبح اسمه‬Femoral a ( between the anterior superior iliac adductor magnus: spine and the symphysis pubis. The vein lies lateral to the artery Termination The femoral artery terminates)‫ (ينتهي‬by passing through the Adductor Canal (deep to sartorius) It exits the canal by passing through the Adductor Hiatus (& enters popliteal fossa) and becomes the Popliteal artery.  Femoral Artery Relation Upper part: Skin & fascia.(its superficial) Lower part: Sartorius. Anteriorly Relations (in the Laterally Medially femoral triangle) Femoral nerve Femoral vein and its branches “VAN” from medial to lateral Posteriorly Psoas (separates it from the hip joint), Pectineus & Addcutor longus  Femoral Artery Where the internal Genitalia gets its supply from Branches branch (Superficial internal Pudendal & Deep internal Pudendal) of internal iliac artery *3 superficial and 2 deep The femoral artery supplies: Lower abdominal wall, Thigh & External Genitalia, through the following branches: 1.Superficial Epigastric.(supply Lower abdominal wall) 2.Superficial Circumflex iliac.(passing upward & lateral)+(supply Lower abdominal wall) 3.Superficial External Pudendal. (supply External 4.Deep External Pudendal. Genitalia) 5.Profunda Femoris (Deep Artery of Thigh) ‫وأكب تفرع‬ ‫^أهم ر‬ ‫ يتفرع منه‬lateral side Then pass behind it to be medial and supply the medial side of thigh Pudendal = of or relating to or near the pudendum)‫الفرج‬ ْ (  Branches Of Femoral Artery: Profunda Femoris Artery: ‫عشانه مهم وكبير ندرسه بالتفصيل‬ o It is an important, large artery to the medial compartment of the thigh. It is the main arterial supply to the thigh. o Arises from the lateral side of the femoral artery(4cm below the inguinal ligament). o It Passes medially behind the femoral vessels. o Branches: o Medial & Lateral circumflex femoral arteries. o Three Perforating arteries. The perforating arteries, usually three in number, are so named because they perforate(pierce))‫تخترق‬-‫ (تثقب‬the tendon of the Adductor magnus to reach the back of the thigh. o It ends by becoming the 4th perforating artery. Popliteal Artery It is the continuation of Femoral artery. It enters the Popliteal fossa through an opening in the Adductor Magnus. Is a It is the deepest structure in the Popliteal Fossa (posterior to the Popliteal Vein & Tibial Nerve) Remember: Tibial Nerve is the most superficial structure here ‫عشان كذا الواحد ممكن يتعور في التيبيل نيرف بس ما يكون فيه نزيف‬ ‫ فلما احد ينكسر في هذا‬,‫ولما يكون فيه كسر في الجزء السفلي من الفيمر احتمال كبير يقطعه‬ ‫المكان الزم محد يحركه وينقل علطول للمستشفى‬ it runs close (the closest structure ) to the capsule of the knee joint. Termination: It Ends At the lower border of Popliteus muscle, it dividies into:  Anterior and Posterior Tibial Arteries. Popliteal Artery Relations: Anterior: Popliteal surface of the femur. Knee joint. Popliteus muscle. Posterior: Popliteal vein. Tibial nerve. skin and fascia.  Popliteal Artery Branches (before Termination): Muscular: (+articular to the knee joint) Five Genicular* branches to the articular capsule and ligaments of the knee joint. Genicular Anastomosis: Formed from the Five genicular branches of the popliteal artery. It is an important anastomosis around the knee. ‫هنا أهميتها‬It compensates )‫ (يعوض‬for the narrowing of the Popliteal artery during prolonged flexion of the knee. ‫مثل‬ ‫الجلسة بين السجدتين في الصالة‬ *Genicular means related to the knee ‫جميلة قالت أن معناها شيء له عالقة بالمفاصل عموما‬.‫لكن د‬  Anterior Tibial Artery: o It is the smaller of the two terminal branches of the popliteal artery. o It enters the anterior compartment of the leg through an opening in the upper part of the interosseous membrane). Where it descends with (company with) the Deep Peroneal nerve. o It supplies structures in the Anterior Compartment of the Leg & Dorsum of foot. o In its upper part, it is Deep. In its lower part, it is Superficial (in front of the lower end of the tibia) o Branches: Muscular& Anastomotic o It ends at the ankle joint midway between the malleoli where it becomes the Dorsalis Pedis artery Pedis = foot  *A diminished dorsalis pedis pulse usually suggests vascular Dorsalis Pedis Artery: insufficiency resulting from arterial disease o It is the main source of blood supply to the toes. o Begins in front of ankle joint as a continuation of the Anterior Tibial artery. o It is superficial in position. o Crossed by the inferior extensor retinaculum and the first tendon of extensor digitorum brevis. o Medially: Tendon of extensor hallucis longus. o Laterally: 1.Deep peroneal nerve 2.extensor digitorum longus. o It Terminates by passing between the two heads of the 1st dorsal interosseous* muscle. Where it divides into deep plantar artery and 1st dorsal metatarsal artery (to the sole to join the plantar arch) and the first dorsal metatarsal artery. o It joins the Lateral plantar artery to complete the Plantar Arch. o Branches: 1.Lateral tarsal artery. 2.Arcuate artery. (to make Arcuate arch) 3.1st dorsal metatarsal artery. *interosseous = ‫بين العظام‬ Posterior Tibial Artery: The larger terminal branch of the popliteal Artery. provides the main blood supply to the Posterior(+lateral) compartment of the Leg & Sole of the Foot. Above: lies on the posterior surface of Tibialis Posterior. Below on the posterior surface of Tibia. Its lower part is covered by Skin & Fascia only. Passes Behind Medial Malleolus , Deep to Flexor Retinaculum. Terminates by dividing into: Medial & Lateral plantar arteries. Branches: 1. Peroneal (Fibular) artery: large artery, descends behind the fibula (the largest and most important branch of the lateral compartment of the leg). It gives : 1. Nutrient artery to the fibula. 2. Muscular branches. 3. Perforating branch to lower part of front of leg. 4. Shares in the Anastomosis around the ankle joint. 2.Nutrient* artery to the tibia. (the largest nutrient artery of the body). Each bone in the body has nutrient artery 3. Calcaneal arteries: supply the Heel. ‫لما يقع شخص من ارتفاع وينكسر الكعب ما يحتاج يجبسونه ألنه غني بالبلود سبالي‬ 4. Anastomotic branches to anastomosis around ankle joint. 5. Medial & Lateral plantar arteries. *Nutrient= ‫أي ارتري داخل لعظم يغذيه‬ Lateral Plantar Artery: Medial Plantar Artery: Digital The larger terminal branch of Arteries the posterior tibial artery. At the base of the 5th The smaller terminal branch of metatarsal bone, it curves the posterior tibial artery. medially to form the Plantar Arises beneath the Flexor Arch. Retinaculum. Which Joins the Dorsalis pedis Ends by supplying the medial artery at the proximal end of side of the big toe.It supplies the 1st intermetatarsal space. mainly the muscles of the great Plantar arch is completed by Deep toe, and gives most of plantar lateral plantar artery and branch Plantar Arch digital arteries. from dorsalis pedis artery. Its superficial branch supplies Branches: Muscular, Articular the skin of the medial side of and Cutaneous. Lateral Medial the sole (of the big toe). The Plantar Arch gives Plantar Plantar artery Plantar Branches: Muscular, Articular Digital Arteries. + planter artery and Cutaneous. metatarsel The arch supplies the skin, fascia and muscles in the sole and plantar digital arteries to the adjacent digits. Helpful video Remember: Arcuate arch in the dorsum of foot Plantar arch In the sole of foot  *Note: cruciate means they are Arterial Anastomosis: arranged in a cross/plus sign TROCHANTERIC Genicular Anastomosis: Cruciate* Around the knee Provides connection between Internal iliac and (supplies the head and neck of femur)‫هنا أهميته‬ Femoral arteries (external iliac). ‫أهميتها‬It compensates for the narrowing of the Popliteal artery during prolonged (It supplies blood to the lower limb in case of ligation of flexion of the knee. the femoral artery)‫هنا أهميته‬ extra:^ ‫سبب التسمية‬ ‫بما‬ ‫انهم‬ ‫على‬ ‫شكل‬ + ‫فهم‬ ‫أربعة‬ ‫فروع‬ Formed from the Five 1. Inferior gluteal. ‫(فوق‬ 1. Superior gluteal. genicular branches of the 2. Medial circumflex femoral. ‫يمين‬ popliteal artery. 3. Lateral circumflex femoral. ‫يسار‬ 2. Inferior gluteal. )‫تحت‬ 3. Medial circumflex femoral. 4. First perforating 1: branch of Internal iliac , 2,3,4: branches of 4. Lateral circumflex femoral Profunda Femoris = Femoral arteries = external iliac ‫ في هذا االنستموزز‬4 ‫ و‬3 ‫جميلة تقول بس رقم‬.‫د‬  Cannulation of Femoral Artery because of the superficial position of the femoral artery, it is used for left cardiac angiography*. A long catheter is inserted percutaneously )‫ (عبر الجلد‬into the artery and passed up the external iliac artery, common iliac artery , aorta to the left ventricle. * Angio = blood vessels Where To Feel The Peripheral Arterial Pulse ? Popliteal artery: Femoral artery: Because of the deep position of the Inferior to the lingual ligament and artery, its pulsations are best felt in the midway between the anterior superior inferior (lower)part of the popliteal fossa iliac spine and symphysis pubis. ( here the artery is related to the tibia). How to Stop bleeding from the femoral ‫نضغط باتجاه التيبيا‬Deep in the popliteal artery? )‫(مؤقتا‬ fossa medial to the midline. By pressing the artery directly posterior Weakening or loss of the popliteal pulse against the superior pubic ramus and is a sign of femoral artery obstruction. the femoral head. Sites of Peripheral Arterial Pulse Dorsalis pedis artery: Posterior tibial artery: Taken Postero inferior to the medial It is easy to be felt being subcutaneous, malleolus (in the groove between the over the tarsal bones between the malleolus and the heel) The flexor tendons of Extensor hallucis longus and retinaculum must be relaxed by inverting Extensor digitorum longus the foot. Palpation of PT pulse is Some people have congenitally non essential for examining patients with palpable DP pulse, the anomaly is occlusive)‫ (انسداد‬peripheral arterial usually bilateral. ‫أما لو في رجل واحدة فقط ففي‬ diseases. ‫مشكلة في الفسلز لكن مو جينية‬  Veins Of Lower Limb: The superficial The blood & deep veins passes from the The veins of the LL are classified into: have valves superficial to which are more the deep veins. numerous in the deep veins. ‫دائما‬ Superficial system Deep system Superficial Veins : lie in the subcutaneous tissue (GSV , SSV) : Dorsal Venous arch (network) Receives most of the blood of the foot through Digital and Communicating veins. Then it’s Drained on the Medial side by the Great Saphenous vein. Lateral side by the Small saphenous vein. Deep veins: deep to the deep fascia and accompany all major arteries (Femoral, Popliteal veins). GSV : Grater saphenous vein , SSV : Small saphenous vein  Great Saphenous Vein: The Longest Superficial vein of the body. Begins from the medial end of the dorsal venous arch (as the medial marginal vein).‫ صمام‬12 ‫الصمامات فيها أكثر ألنها أطول فتقريبا فيها‬ Ascends: A-In front of the Medial Malleolus)‫ (وهذا المكان ثابت عن كل الناس‬accompanied by the (Saphenous nerve). B- Posterior to the Medial Condyle of the femur. C- Passes through the Saphenous Opening (in the facsia) (2.5-3.25) cm below and lateral to the pubic tubercle. Terminates in: Femoral Vein. Because of its constant position in front of the medial malleolus, it is used for saphenous cutdown especially in infants, obese and shocked patients. ً ‫عشان موقعه ثابت دائما فنقدر بعد ندخل فيه حقنة وريدية اذا احتجنا في الطوارئ مث‬ ‫ال‬ What is cut-down? Venous cut-down is an emergency procedure in which the vein is exposed surgically and then a cannula is inserted into the vein under direct vision. It is used to get vascular access in trauma and hypovolemic shock patients when peripheral cannulation is difficult or impossible. The saphenous vein is most commonly used.  Small Saphenous Vein: Originates from the lateral end of the dorsal venous arch. Where the great one Begins from the medial end of the dorsal venous arch Ascends: Behind the lateral Malleolus along with the Sural nerve; along the middle of the back leg (in company with the Sural nerve) Where the great one Ascends In front of the Medial Malleolus ‫(المكان‬ )‫الثابت عن كل الناس‬accompanied by the Saphenous nerve). Termination: 1. It may join the Great Saphenous vein. 2. joins the Popliteal vein 3. Or *Bifurcates: One branch joins the Great saphenous and the other joins the Popliteal vein.‫يختلف من شخص آلخر‬ *Bifurcates: Divides into two parts Deep Veins: Popliteal vein: formed by the union of venae comitantes around the anterior and posterior tibial artery. It is posterior to popliteal artery. Femoral vein: A continuation of popliteal vein. Course: 1. Enters the thigh by passing through the opening in adductor magnus. 2. Leaves the thigh in (through) the Intermediate compartment of femoral sheath. 3. Passes behind inguinal ligament to become external iliac vein. ‫هذه الصورة‬ ‫ و‬2 ‫إليضاح النقطة‬ 3 Femoral sheath surrounding artery & vein and lymph node  Venae Comitantes: Perforating Veins:  They are deep veins that accompany all the major arteries and their branches. Connect superficial veins (great saphenous vein) with the deep veins  Usually paired along the medial side of the calf.  They are contained within the vascular sheath of the artery, whose pulsations Penetrate the deep fascia ‫(وهذا سبب‬ help to compress and move blood in the )‫ تسميتها‬close to their origin from the superficial veins. veins especially during exercise. The perforating veins pass through (the arteries help in moving the blood through the venae the deep fascia at an oblique angle comitantes)‫هنا أهميتها‬ , ‫عشان كذا لما الواحد يطول وهو واقف يغمى عليه ألنه الدم ما قدر يرجع للقب‬ so during muscular contraction, they ‫فالعسكري مثال اللي يحتاج يوقف لمدة طويلة الزم بين فترة وفترة يحرك عضالت‬ are compressed. This also prevents ‫ساقه خاصة‬ blood flowing from the deep to the superficial veins.. Their valves only allow blood to flow from the superficial veins to the deep veins. In some cases, such as in varicose veins, the valves weaken, leading to the flow of blood in the opposite direction ( from deep to superficial)  Only on the girls’ slides Varicose Veins:= ‫الدوالي‬ Varicose veins definition: Cause: Result: It is the dilatation It is because of the This allows the passage and degeneration of incompetence of the of high pressure blood the superficial veins valves in the from the deep veins to that may be perforating veins or the superficial veins complicated by valves within the ulcers. great saphenous vein ‫فتتوسع األوردة السطحية نتيجة‬ Extra picture for It is more common in itself. ‫تجمع الدم فيها ويصير لون الدم‬ understanding the posteromedial ‫فالدم ما صار يروح لألوردة‬ ‫أغمق ثم تتلفف(تتعرك) *مثل‬ part of the lower ‫العميقة ويتجمع في السطحية‬ ‫الصورة* ثم يتفجر وهذا التفجر‬ limb. ‫فقط أو حتى ينتقل من العميقة‬ ‫يسبب قرحة ! اسمها‬ ! ‫للسطحية‬ Varicose ulcer incompetence of the valves ‫ممكن يكون بسبب‬ ‫الحمل أو ضعف طبيعي فيها‬ ‫أو ورم‬  Deep Vein Thrombosis (DVT) : Only on the girls’ slides o Definition: it is when a blood clot (thrombus) forms in one of the deep veins of the lower limb. o The veins of the lower limb are subject to venous thrombosis after a bone fracture. ‫أو بسبب االستلقاء على السرير لمدة طويلة‬ o Venous stasis is the main cause by pressure on the veins from the bedding during prolonged hospital stay and aggravated by muscular inactivity.‫فالمريض بعد الجراحة الزم يتحرك‬ o Thrombophlebitis (inflammation of the wall of a vein with associated thrombosis) may develop around the vein. o Pulmonary thromboembolism (blockage of a pulmonary artery in the lung) may occur when a thrombus breaks free from the lower limb vein and passes to the lungs. ‫ أيام من الجراحة تصيب المريض هذه الحالة بسبب أنه ما تحرك! فانتقلت‬7 ‫فمثال بعد‬ ! ‫الجلطة من أوردة األطراف السفلى إلى األوردة الرئوية ثم للرئة‬  MCQs 1. At the opening of adductor magnus the femoral vein lies.......... to the femoral artery ? 4. The superficial vein has more valves than the deep vein : A. Lateral A- True B-False B. Medial C. Anterior 5. The popliteal vein is ………. to popliteal artery: D. Posterior A. Anterior 2. Which one of the following Completes the Plantar arch ? B. Posterior A. Lateral Plantar Artery C. Medial B. Lateral tarsal artery. D. Lateral C. Dorsalis Pedis Artery D. A and C 3. Which of the following is Inferior to the lingual ligament and midway between the anterior superior iliac spine and symphysis pubis? Answers: A-Posterior Tibial 1.A B-Popliteal 2.D 3.C C-Femoral 4.B D-Dorsalis Pedis 5.B  SAQ Q1.Mention the terminal branch of Posterior Tibial Artery. Q2.What are the sites of peripheral arterial pulse? Q3.Describe the function of perforating veins. Q1: 1-medial plantar arteries. 2-lateral plantar arteries. Q2: 1-Femoral 2-Popliteal 3-Posterior Tibial 4-Dorsalis Pedis Q3:They connect the superficial veins to the deep veins, and they maintain the blood flow from the superficial veins to the deep veins. Leaders: Members: Yazeed AlSuhaibani Nawaf AlKhudairy Abdulmalik alhadlaq Jawaher Abanumy Mohammed nasr Ghada Almazrou Majed alzain Talal alhuqayl Hamad Alkhudhairy Mohammed Habib Abdulhakim Alonaiq [email protected] Abdullah Jammah @anatomy436 Mohammed alkahil Abdulaziz alsalman