Femur Bone

FEMUR BONE

Q. 1

True Supracondylar fracture of femur‑

 A

Type A

 B

Type B

 C

Type C

 D

Type D

Q. 1

True Supracondylar fracture of femur‑

 A

Type A

 B

Type B

 C

Type C

 D

Type D

Ans. A

Explanation:

Ans. is ‘a’ i.e., Type A


Q. 2

Fracture neck femur cause of non-union‑

 A

Injury to blood supply with shearing stress

 B

Poor nutrition of the patient

 C

Smoking

 D

Old age and osteoporosis

Q. 2

Fracture neck femur cause of non-union‑

 A

Injury to blood supply with shearing stress

 B

Poor nutrition of the patient

 C

Smoking

 D

Old age and osteoporosis

Ans. A

Explanation:

Ans. is ‘a’ i.e., Injury to blood supply with shearing stress

  • Causes of non-union in fracture neck of femur are :‑
  1. Fracture morphology – high fracture angle and increased shear.
  2. Displaced fracture grade 3/4.
  3. Fracture comminution.
  4. Inadequate reduction and stability of fixation.
  5. Poor bone quality.
  6. Injury to vascularity- direct and tamponade effect.
  7. Absence of cambium layer in periosteum.
  8. Factors in synovial fluid which inhibit the callus formation.
  9. Lack of hematoma.
  10. Washing away and dilution of osteogenic factors.

Q. 3

Main blood supply to the head and neck of femur comes from

 A

Lateral circumflex femoral Artery

 B

Medial circumflex femoral Artery

 C

Artery of Ligamentum Teres

 D

Popliteal Artery

Q. 3

Main blood supply to the head and neck of femur comes from

 A

Lateral circumflex femoral Artery

 B

Medial circumflex femoral Artery

 C

Artery of Ligamentum Teres

 D

Popliteal Artery

Ans. B

Explanation:

Ans. is ‘b’ i.e., Medial circumflex femoral Artery 

  • The medial circumflex femoral artery along with its retinacular and epiphyseal branches supplies most of the blood supply to the head and neck of femur.
  • Arterial supply of femoral head has been explained in details in previous sessions.

Q. 4

Lower end of femur is ossified from how many ossification centers :‑

 A

1

 B

2

 C

3

 D

4

Q. 4

Lower end of femur is ossified from how many ossification centers :‑

 A

1

 B

2

 C

3

 D

4

Ans. A

Explanation:

Ans. is ‘a’ i.e., 1 



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