MSK: disease states

Question 1

Bone density score in osteopenia and osteoporosis

Answer 1

osteopenia: T score -1 to -2.5
osteoporosis: T score -2.5 or less

Question 2

MC site for herniated disc

Answer 2

L5-S1

Question 3

Classic triad for epidural abscess

Answer 3

fever, spinal pain, neuro deficits

Question 4

idiopathic compression of the brachial plexus, subclavian vein, or subclavian artery

Answer 4

thoracic outlet syndrome

Question 5

pars interarticularis defect due to failure of fusion or stress fracture

Answer 5

spondylolysis

Question 6

MC joint affected in acute gouty attack

Answer 6

first MTP joint of great toe (podagra)

Question 7

Dx in gout

Answer 7

arthrocentesis with negatively birefringent, needle shaped crystals

Question 8

Dx in calcium pyrophosphate dehydrate deposition disease (Pseudogout)

Answer 8

arthrocentesis with positively birefringent, rhomboid shaped crystals

Question 9

MC joint affected in acute CPPD attack

Answer 9

knee

Question 10

autoimmune mono or polyarthritis in children <16 yo for >6 weeks

Answer 10

Juvenile (Idiopathic) Rheumatoid Arthritis

Question 11

MC organism to cause septic arthritis

Answer 11

S aureus

Question 12

Dx for septic arthritis

Answer 12

arthrocentesis with WBC >50k, primarily neutrophils

Question 13

Dx for compartment syndrome

Answer 13

increased intracompartmental pressure >30 mmHg or delta pressure <20-30 mmHg

Question 14

Tx for compartment syndrome

Answer 14

fasciotomy

Question 15

MC organism to cause acute osteomyelitis

Answer 15

S aureus

Question 16

salmonella caused acute osteomyelitis pathognomic for this disease

Answer 16

Sickle Cell Disease

Question 17

hip pain with leg shortened, adducted, and externally rotated

Answer 17

hip fracture

Question 18

hip pain with leg shortened, adducted, and internally rotated

Answer 18

hip dislocation

Question 19

MC knee ligamental injury

Answer 19

ACL injuries