In the 90-90 straight leg raise test, what finding indicates hamstring tightness?

In the 90-90 straight leg raise test, what finding indicates hamstring tightness?

• A. Increased knee extension
• B. Reduced knee extension
• C. Pain at knee only
• D. Pain at hip

Answer: (B)

This test assesses hamstring flexibility by positioning the hip at 90 degrees and then trying to straighten the knee. If the hamstrings are tight, they resist lengthening, so the knee cannot fully straighten. The defining sign is reduced knee extension—the knee remains partially flexed rather than reaching full extension. Pain locations can vary and aren’t the specific indicator of hamstring tightness in this test.

This test assesses hamstring flexibility by positioning the hip at 90 degrees and then trying to straighten the knee. If the hamstrings are tight, they resist lengthening, so the knee cannot fully straighten. The defining sign is reduced knee extension—the knee remains partially flexed rather than reaching full extension. Pain locations can vary and aren’t the specific indicator of hamstring tightness in this test.