Orthopedic And Soft Tissue Injuries Practice Test

A 52-year-old woman with a history of chronic low back pain presents to the emergency department with a 12-hour history of new-onset bilateral leg weakness, numbness in her perineal area, and urinary retention. She required catheterization for 600 mL of urine. On examination, she has 3/5 strength in her lower extremities bilaterally, decreased sensation in a 'saddle' distribution, and diminished anal sphincter tone.

A 45-year-old man is rescued from a collapsed building 4 hours after an earthquake. His lower extremities were crushed by debris. In the emergency department, he is found to have extensive bruising and swelling of both legs. His blood pressure is 90/60 mm Hg and heart rate is 120/min. A urine sample is dark brown and tests strongly positive for heme, but microscopy shows no red blood cells. His serum creatine kinase is markedly elevated.