CMC arthritis vs. De Quervain's tenosynovitis — two conditions that hurt in the same neighborhood but require completely different treatment. The Finkelstein test and CMC grind test that tell you which one you're dealing with.

The four-stage progression of ulnar nerve compression at the elbow — and when the window for conservative treatment starts closing. Includes the Finkelstein test and a stage-by-stage breakdown of what symptoms mean at each point.