90-90 Test
Patient Position
Have the patient lie in the supine position on a flat surface.
Directions
- Passively move the patients leg so that the leg is positioned at 90 degrees hip flexion and 90 degrees knee flexion.
- Passively attempt to move the patients leg into complete knee extension.
- This test should be performed bilaterally.
Expected Results
- The patient should be able to keep their hip flexed at 90 degrees when passively moved into full knee extension.
Positive Sign
- The positive sign of the 90-90 test is that the patient is unable to keep their hip flexed at 90 degrees when passively moved into full knee extension.
Implications
- A positive sign indicates tightness of the hamstring muscles (Bicep Femoris, Semitendinosus & Semimembranosus).
Have the patient lie in the supine position on a flat surface.
Directions
- Passively move the patients leg so that the leg is positioned at 90 degrees hip flexion and 90 degrees knee flexion.
- Passively attempt to move the patients leg into complete knee extension.
- This test should be performed bilaterally.
Expected Results
- The patient should be able to keep their hip flexed at 90 degrees when passively moved into full knee extension.
Positive Sign
- The positive sign of the 90-90 test is that the patient is unable to keep their hip flexed at 90 degrees when passively moved into full knee extension.
Implications
- A positive sign indicates tightness of the hamstring muscles (Bicep Femoris, Semitendinosus & Semimembranosus).
Rehabilitation Direction
- The rehabilitation program of an individual who has a positive sign with the 90-90 test will need to include a hamstring stretching routine.
- The rehabilitation program of an individual who has a positive sign with the 90-90 test will need to include a hamstring stretching routine.