1. Review of the Knee Joint

2. Name the ligament

3. Semitendinosus Action: –Flexion of the knee –Internal rotation of the knee Name the muscle and its action(s)

4. 1.Vastus Medialis 2.Rectus Femoris 3.Vastus Lateralis 1. 3. 2.

5. Tibia & Fibula Medial condyle Lateral condyle Head of fibula? = ? =

6. Sartorius Action: Flexion at the knee Name the muscle and its action

7. Semimembranosus Action: –Flexion of the knee –Internal rotation of the knee Name the muscle and its action(s)

8. 1.Anterior cruciate ligament 2.Lateral collateral ligament 3.Lateral meniscus 4.Posterior cruciate ligament 5.Medial collateral ligament 6.Medial meniscus 1. 2. 3. 4. 5. 6.

9. Popliteus Action: –Flexion of knee –Internal rotation of the knee Name the muscle and its action

10. 2. 3. 1. 1 = Lateral Meniscus 2 = Patella 3 = Medial meniscus

11. Vastus medialis Rectus femoris Vastus lateralis Name the colored muscles 1 2 3

12. Femur ? = Lateral condyle Medial condyle Intercondylar fossa

13. Gracilis Action - flexion at the knee Name the muscle and its action

14. 1. 2. 3. 1.= Vastus lateralis 2.= Rectus femoris 3.= Vastus medialis

15. What is the Q angle? The angle between the line of pull of the rectus femoris and the patellar ligament.

16. Review Define “screw home” movement. –Locking of the knee during full extension and external rotation. Which type of rotation occurs during “unlocking” of the knee? –Internal rotation and flexion

17. 1. 2. 3. 4. 1. = Anterior cruciate ligament 2. = Lateral collateral 3. = Lateral meniscus 3. = Medial collateral 4. = Medial mieniscus

18. Name the muscles. 1. 2. 3. 1 = Vastus lateralis 2 = Vastus intermedius 3 = Vastus medialis

19. Fibula Head Lateral malleolus ? =

20. 1.Semitendonosis 2.Biceps femoris 3.Semimembranosi s Name the muscles 1. 2. 3.

21. Biceps femoris Action: –Flexion of knee –External rotation of the knee Name the muscle and its action

22. Tibia Medial condyle Lateral condyle Tibial tuberosicty ? =

23. Name two functions of the menisci. 1.Stabilization 2.Shock absorption 3.Lubrication

24. Name the muscle and its action(s) Sartorius Action: Flexion at the knee

25. Questions What is a uniarticulate muscle? –A muscle that crosses one joint What is a biarticulate muscle? –A muscle that crosses two joints. What is a disadvantage of a biarticulate muscle? –They are weaker during movement at both of the joints.

26. 2. 1. 1 = Lateral meniscus 2 = Medial meniscus

27. Femur 1.Medial condyle 2.Lateral condyle 3.Intercondylar fossa

28. Popliteus Action: –Flexion of the knee –Internal rotation of the knee Name the muscle and its action(s)

29. Tibia 1. 2. 1.Lateral condyle 2.Medial condyle

30. Biceps femoris Action: Flexion of knee External rotation of the knee Name the muscle and its action

31. Fibula Head Proximal Distal

32. 1. 2. 3. Action: –Extension of the knee Name the muscles and its action 1.Vastus lateralis 2.Vastus intermedius 3.Vastus medialis

33. LIGAMENTS 1.ACL 2.Lat. Collat. 3.Lat. Men. 4.PCL 5.Med. Collat. 6.Med. Men. 1. 2. 3. 4. 5. 6.

34. Meniscus 1.ACL 2.Lateral men. 3.PCL 4.Medial men. 1 2 4 3

35. Rectus femoris Action: –Extension of knee Name the muscle and its action

36. QUESTIONS?