Hamstring Length Test (@ 90/90) | Rationale & Demonstration

The video tutorial explains the hamstring muscle length test, also known as the 9090 test. It describes the procedure, where the patient lies in a supine position with the hip and knee at 90 degrees. The physical therapist stabilizes the thigh and extends the knee to measure hamstring length. Normal range is defined as a knee angle between full extension and 20 degrees short. A positive test indicates hamstring tightness if the knee is more than 20 degrees short of full extension. The video also covers how to measure knee angles and interpret results.

What is the initial position of the patient for the hamstring muscle length test?

Describe the positioning of the hip and knee during the hamstring length test.

What constitutes a positive test result in the hamstring length test?

Explain the significance of the lateral malleolus position in determining hamstring length.

What is considered the normal range for hamstring length based on knee extension?