1. Back of thigh

2. 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

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

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

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

6. 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

7. Modification of muscle into ligaments
Adductor magnus
– tibial collateral ligament

8. Modification of muscle into ligaments
Biceps femoris
– Sacrotuberous ligament

13. 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

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

15. Roof

20. Relations

21. Popliteal artery
Origin
Termination
Branches

22. Sciatic nerve and branches

23. 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

25. Some terms Popliteal fascia Fascia over popliteus
Oblique popliteal ligament

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

29. 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

30. 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

31. 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

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

33. 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