USMLE Step 1 Review/Musculoskeletal

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Upper Limb Lower Limb


w:metabolic pathway



Mnemonics[edit | edit source]

Back Pain: DISK MASS[edit | edit source]

D == Degeneration: DJD, Osteoporosis, spondylosis

I == Infection: UTI, PID, Potts, osteomyelitis, prostatitis, Injury/fracture, compression fracture.

S == Spondylitis, ankylosing Spondyloarthropathies (rheumatoid arthritis, Reiters, SLE)

K == Kidney stones/infarction/infection (pyelo/abscess)

M == Multiple myeloma, Metastasis from breast, prostate, lung, thyroid, kidney CA

A == Aneurysm, Abdominal pain referred to the back (see acute abdominal pain)

S == Slipped disk, Spondylolisthesis

S == Strain, Scoliosis/lordosis, Skin: herpes zoster.