Rounds Quiz

421. What are some of the common causes of avascular necrosis?
A. steroids
B. Caissons disease
C. alcohol abuse
D. Gaucher's disease
E. all of the above

422. What carpal bone is affected by Kienbock's disease? A. pisiform
B. capitate
C. lunate
D. triquetrum

423. Traumatic shoulder dislocation is uncommon before adolescence.
True or False

424. Which of the following interventions for fracture pre­vention in post-menopausal women is most likely to be safe and effective?
A. vitamin D alone
B. Alendronate (Fosamax)
C. hormone therapy
D. calcium alone

425. Which one of the following nonsurgical treatments for osteoarthritis of the knee has been proven to reduce pain and disability?
A. exercise and physical therapy
B. shoe inserts
C. acupuncture
D. Chondroitin

426. A 64-year-old man who has had poorly controlled type 2 diabetes for 10 years presents with a superficial, painful purulent ulcer on the sole of his foot associated with minor trauma from his footwear. He has no other acute signs or symptoms of illness. Which one of the following pathogens is the most likely cause of infection?

A. Clostridium perfringens
B. Escherichia coli
C. Staphylococcus aureus
D. Peptococcus magnus

Answers to the last Rounds Quiz:
415. A, C & E; 416. True; 417. A; 418. C; 419. C; 420. D