1. Emily Delello Salene Sheridan
Know Your KNEE
Emily Delello
Salene Sheridan

2. The knee joint is 3 joints in1
The Tibiofemoral joint is a hinge joint permitting flextion and extension.
The Femoralpatellar joint is a plane joint where the patella glides across the distal end of the femur during knee flextion.
Structurally it is a bicondylar joint allowing some rotation when the knee is partially flexed and when the knee is extending.

3. Femur

4. Tibia

5. Fibula

6. Patella
Left and Right???

7. Patella

8. MUSCLES Of the Leg

9. Rectus Femoris Origin: Anterior Inferior iliac spine
Insertion : Tibial Tuberosity
Action: Hip flexion, Knee extension
Innervation: Femoral Nerve
Vascular supply: Lateral circumflex artery

10. Lateral Circumflex Femoral Artery

12. Vastus intermedialis Origin: Anterior femur
Insertion: Tibial tuberosity via patellar tendon
Action: Knee extension
Innervation: Femoral nerve
Vascular supply: Lateral circumflex femoral artery

13. Vastus lateralis Origin: Lateral aspera
Insertion: Tibial tuberosity via patellar tendon
Action: Knee extension
Innervation: Femoral nerve
Vascular supply: Lateral circumflex femoral artery

14. Vastus Medialis Origin: Linea aspera
Insertion: Tibial tuberosity via patellar tendon
Action: Knee extension
Innervation: Femoral nerve
Vascular supply: Circumflex femoral artery

15. Vastus Lateralis
Vastus Medialis

16. Bicep Femoris
Origin: Long head of the Ischial tuberosity. Short head the lateral lip of linea aspera
Insertion: Fibular head
Action: Long head, extends hip and flexes knee. Short head, flexes knee
Innervation: Long head, sciatic nerve. Short head, common peroneal nerve
Vascular supply: Inferior gluteal artery

21. Semimembranous Origin: Ischial Tuberosity
Insertion: Posterior surface of medial condyle of tibia
Action: Extend hip and flex knee
Innervation: Sciatic nerve
Vascular supply: Inferior gluteal artery

23. Semimembranosus
Semitendinosus

24. Semitendoninosus Origin: Ischial tuberosity
Insertion: Anteromedial surface of
Proximal tibia
Action: Extend hip and flex knee
Innervation: Sciatic nerve
Vascular supply: Deep femoral

28. Popliteus Origin: Lateral condyle of femur
Insertion: Posteriorly on medial condyle of tibia
Action: Initiates knee flexion
Innervation: Tibial nerve
Vascular Supply: Popliteal artery

29. gastrocnemius Origin: Medial and lateral condyles of femur
Insertion: Posterior calcaneus
Action: Knee flextion, ankle plantar flextion
Innervation: Tibial nerve
Vascular supply: Popliteal artery

32. Lateral Head
Medial Head of Gastrocnemius

33. Ligaments
A ligament is a tough band of fibrous tissue that connects bone to bone or bone to cartilage and supports and strengthens joints.

34. KEY 1= Quadriceps femoris tendon 2=Patellar Ligament
3= Oblique popliteal ligament
4=arcuate popliteal ligament
5=Tibial collateral ligament
6=Fibular collateral ligament
7=Anterior cruciate ligament
8=Posterior cruciate ligament
9=Transverse ligament

35. 1 2

36. 4 4

37. 7 5 6 3 8

39. 1 2

40. 2

41. 9

42. Bursae-A bursa (plural bursae) is a small fluid-filled sac lined by synovial membrane with an inner capillary layer of viscous fluid (similar in consistency to that of a raw egg white). It provides a cushion between bones and tendons and/or muscles around a joint. This helps to reduce friction between the bones and allows free movement. Bursae are filled with synovial fluid and are found around most major joints of the body.

43. Bursae 1=Prepatellar Bursa 2=Deep Infrapatellar Bursa
3=Suprapatellar Bursa
4=Subcutaneous Infrapatellar Bursa

44. 1 2 3

45. 4

46. Cartilage
Firm, whitish, flexible connective tissue found in various forms in the larynx, in the external ear, and in the articulating surfaces of...
A particular structure made of this tissue.

50. THE END!!!!!!!