Bone

Question 1

The most primary maligmant bone tumor

Answer 1

Osteosarcoma

Presents usually knee and/or leg. teens

Question 2

15 yo male with nontraumatic knee pain as well as swelling and tendnerness. ROM complaints later on.

Answer 2

Osteosarcoma 
Adolescent
Male
Knee 
Nontraumatic

Question 3

Which bone cancer has a bimodal peak incidence between 30 and 60 ?

Answer 3

Chondrosarcoma

30 yr with dull achy pain in pelvis or leg or scapula or proximal arm.

Question 4

5 yo male with complaints of extremity pain and dilated veins. He complains of fever and elevated Sed rate in office. What kind of bone cancer is this? What can it mimic?

Answer 4

Ewings Sarcoma
5-25 yrs with 10 to 20 peak age
Pelvis, femur, tibia, humerus, scapula
Onionskin layer on radiograph

Question 5

28 yr old Female with knee and non specific local pain with functional disability. She is palpable mass that has appeared very fast from onset of symptoms.

Answer 5

Giant Cell Tumor
20 -40 yrs w. slight female predominence
Distal Femur/prox tibia, distal radius.
Fast growing

Question 6

How does PTH affect Ca and phospate in kidneys?

Answer 6

Increase Calcium and excretes phosphate.

Question 7

What is the ideal serum level of Vit D in athletes?

Answer 7

> 40

Question 8

Common replacement recomendations for low Vit D in athletes

Answer 8

50,000 IU per week 6-8 weeks follow by 600-800 IU a day.

Question 9

How does calcitonin influence bone remodeling

Answer 9

directly inhbitis osteoclast.

Question 10

Why is someone with untreated hyperthyoidism at risk of fractures?

Answer 10

Thyroid horomone increased bone turnover ( resorption always is faster then formation)

Question 11

Splinting or bracing is a form of ( primary/secondary) healing .

Answer 11

secondary - Callus attempts to bridge fracture gap

Question 12

Plating is a form of (primary/secondary) healing

Answer 12

primary