![90-90 Straight Leg Raise Test](https://physiotutors.com/wp-content/uploads/2022/01/hipassessment_9090slr_2-640x360.jpg)
![90-90 Straight Leg Raise Test](https://physiotutors.com/wp-content/uploads/2022/01/hipassessment_9090slr_2-640x360.jpg)
The 90-90 Straight Leg Raise Test also known under the name of Active Knee Extension Test (AKET) is a test to assess hamstring length and the presence of possible hamstring contracture.
Neto et al. (2015) have evaluated this tests intra-rater reliability and found a good intra-rater ICC of 0.91. They concluded that the Active Knee Extension Test has an excellent intra-rater reliability and a small detectable difference of 7-8°.
1) Patient is in supine position with the hips and knees flexed to 90° and the lumbar spine in neutral position
2) The patient is then asked to stabilize this position by grabbing onto the back of thethighs
3) The patient actively extends the knee on the side to be tested, while his lumbar spine remains in neutral position
Other common tests to assess hamstring length are:
To provide the best experiences, we and our partners use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us and our partners to process personal data such as browsing behavior or unique IDs on this site and show (non-) personalized ads. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Click below to consent to the above or make granular choices. Your choices will be applied to this site only. You can change your settings at any time, including withdrawing your consent, by using the toggles on the Cookie Policy, or by clicking on the manage consent button at the bottom of the screen.
Download our free physiotherapy app with all the knowledge you need.