Back of thigh

Hamstring muscles Definition Origin from ischial tuberosity Insertion to one of bones of leg Nerve supply by tibial part of sciatic nerve Flexion of knee Extension of hip

Semitendinosus Origin from ischial tuberosity Insertion to one of bones of leg Nerve supply by tibial part of sciatic nerve c c c

Semimembranosus Origin from ischial tuberosity Insertion to one of bones of leg Nerve supply by tibial part of sciatic nerve c c c

Adductor magnus – ischial part Origin from ischial tuberosity Insertion to one of bones of leg Nerve supply by tibial part of sciatic nerve c

BUT Biceps femoris Origin from ischial tuberosity Insertion to one of bones of leg Nerve supply by tibial part of sciatic nerve c c c BUT

Modification of muscle into ligaments Adductor magnus – tibial collateral ligament

Modification of muscle into ligaments Biceps femoris – Sacrotuberous ligament

A 52 year old farmer comes with history of pain in calf anf knee when bending down to dig soil. On examination, a tender swelling is seen in the back of the knee

Popliteal fossa Diamond shaped depression in the back of the knee Main content – neurovascular bundle Popliteal artery Popliteal vein Branches of sciatic nerve

Roof

Relations

Popliteal artery Origin Termination Branches

Sciatic nerve and branches

A 20-year-old college student receives a severe blow on the inferolateral side of the left knee joint while playing football. Radiographic examination reveals a fracture of the head and neck of the fibula Which of the following nerves is damaged? (A) Sciatic (B) Tibial (C) Common peroneal (D) Deep peroneal (E) Superficial peroneal

Some terms Popliteal fascia Fascia over popliteus Oblique popliteal ligament

A patient with hereditary blood clotting problems presents with pain in the back of her knee. An arteriogram reveals a blood clot in the popliteal artery at its proximal end. Which of the following arteries will allow blood to reach the foot? (A) Anterior tibial (B) Posterior tibial (C) Peroneal (D) Lateral circumflex femoral (E) Superior medial genicular

Popliteal fossa swellings Baker’s cyst Popliteal aneurysm Enlargement of lymph nodes Lipoma

A patient presents with a thrombosis in the popliteal vein A patient presents with a thrombosis in the popliteal vein. This thrombosis most likely causes reduction of blood flow in which of the following veins? (A) Greater saphenous (B) Lesser saphenous (C) Femoral (D) Posterior tibial (E) Anterior tibia

B.L., a 65-year-old woman, submitted to cardiac catheterization in order to measure the pressures in the chambers of her heart. A catheter was inserted in her right femoral vein and floated through the iliac veins and the inferior vena cava to the right heart, where diagnostic procedures were performed without incident. Four hours after completion of the procedure, however, B.L. began to complain of a painful throbbing in her right groin. Over the course of the next hour, the pain worsened and she began to experience numbness and tingling in her right anteromedial thigh and leg. On examination, her right leg felt cool and a mass was observed in the right groin. No distal pulses could be felt in the leg. B.L. was immediately taken up to surgery for exploration of the groin region

Other possibilities of swelling Femoral hernia Femoral artery aneurysm Saphena Varix Enlargement of lymph nodes

Question A 20 year old patient cannot flex and medially rotate his thigh while running and climbing. Which of the muscles is paralysed? Sartorius Rectus femoris Semitendinosus Vastus intermedius Tensor Fascia lata