bones of Lower Limb. bones of Lower Limb.

bones of Lower Limb. pptx

1. Bones of ……. The Lower Limb

2. Bones in the Lower Limb The lower limbs have 60 bones in total Each lower limb has a femur, patella, tibia, fibula, 7 tarsals , 5 metatarsals and 14 phalanges (x2=60)

3. Femur (Thigh B one) The femur is the longest, heaviest bone in the body It makes up ¼- 1/3 of the body When a person is standing upright, the femur transmits weight from hip to the tibia (shin bone) Function: Supports the most weight out of any other bone in the body Helps in the movement of our legs

4. Parts of Femur Head (rounded epiphysis): articulates with the pelvis at the acetabulum Greater & lesser trochanters: projections that extend laterally from juncture of neck and shaft. Develop where large tendons attach to femur. Linea aspera : attachment of powerful muscles that pulls the shaft toward midline (movement called adduction). Lateral & Medial epicondyle: inferior surfaces form lateral and medial condyles  form part of knee joint.

5. Femur (Thigh Bone)

6. Femur Femoral Fracture Usually caused by a large force such as: Car accidents Falls from a height

7. Quick Quiz What are the two functions of the femur bone? Supports the most weight out of any other bone in the body Helps in the movement of our legs

8. Patella (Knee C ap) Glides over smooth anterior surface between lateral and medial condyles. It is a triangular sesamoid bone. Sesamoid means the bone is embedded in a tendon The patella is embedded in a tendon of the quadricep muscles that straighten the knee. It articulates with the femur and covers and protects the anterior articular surface of the knee joint.

9. Patella (Knee Cap) Functions: The primary function is knee extension. The patella increases the leverage that the tendon can exert on the femur by increasing the angle at which it acts. Dislocation Dislocation of the patella is common, especially among young female athletes. It is when the Patella moves out of place. It can be put back into place by extending the leg and sometimes it is fixed by itself.

10. Patella (Knee Cap)

11. PATELLA A ‘sesamoid’ (floating) bone Protection Mechanical advantage to quads. Without the patella, 30% more force would be required by the quads

12. PATELLA

13. Patella (Knee Cap) Functions: The primary function is knee extension. The patella increases the leverage that the tendon can exert on the femur by increasing the angle at which it acts. Dislocation Dislocation of the patella is common, especially among young female athletes. It is when the Patella moves out of place. It can be put back into place by extending the leg and sometimes it is fixed by itself.

14. Patella (Knee Cap)

15. Patella (Knee C ap) Glides over smooth anterior surface between lateral and medial condyles. It is a triangular sesamoid bone. Sesamoid means the bone is embedded in a tendon The patella is embedded in a tendon of the quadricep muscles that straighten the knee. It articulates with the femur and covers and protects the anterior articular surface of the knee joint.

16. Quick Quiz The Patella articulates with the _______   (1) and covers and protects the ____________________ (2). femur anterior articular surface of the knee joint

17. Thank You 