The McMurray test is best for ruling in or ruling out meniscal pathology?

The McMurray test is best for ruling in or ruling out meniscal pathology?

• A. Ruling out
• B. Ruling in
• C. Both
• D. Neither

Answer: (B)

The key idea is that some clinical tests are more useful for confirming a diagnosis when they’re positive, because they’re fairly specific. The McMurray test reproduces the movements that can pinch or tear a meniscus, so a distinct produced pain, snapping, or a click during the maneuver strongly points to a meniscal tear. That makes it particularly good at ruling in meniscal pathology when the result is positive. A negative result, however, doesn’t reliably exclude a tear—tears can be missed due to tear location, chronic changes, or how the knee is positioned during the test—so its value for ruling out is limited. In practice, you interpret it alongside other findings and imaging when suspicion remains.

The key idea is that some clinical tests are more useful for confirming a diagnosis when they’re positive, because they’re fairly specific. The McMurray test reproduces the movements that can pinch or tear a meniscus, so a distinct produced pain, snapping, or a click during the maneuver strongly points to a meniscal tear. That makes it particularly good at ruling in meniscal pathology when the result is positive.

A negative result, however, doesn’t reliably exclude a tear—tears can be missed due to tear location, chronic changes, or how the knee is positioned during the test—so its value for ruling out is limited. In practice, you interpret it alongside other findings and imaging when suspicion remains.