MSK

Question 1

Ottawa Knee Rules

Answer 1

Age > 55<div>Isolated patellar tenderness</div><div>Localized tenderness at the head of the fibula</div><div>Inability to flex knee to 90 degrees</div><div>Inability to bear wt (4 steps): immediately after injury OR in the ER</div>

Question 2

What important items in the hx of back pain might be red flags

Answer 2

Age > 50<div>Pain > 4 weeks</div><div>Rest pain</div><div>Hx of trauma (mechanical)</div>

Question 3

Kocher criteria for hip septic arthritis

Answer 3

1) Fever >38.5C;<div>2) WBC > 12,000/mm3;</div><div>3) Non-weight bearing on affected side;</div><div>4) ESR >40mm/hr.</div><div><br></br></div><div>Three out of 4 criteria confers a 93% probability for septic arthritis, while 4 out of 4 criteria confers a 99% probability for septic arthritis.</div>

Question 4

“What is this lesion and what does it indicate?<div><img></img><br></br></div>”

Answer 4

The image shows Gottron’s papules consistent with Dermatomuositis. Diagnosis is by muscle biopsy, and treatment is high dose steroids and rheumatology consult.