Ely's Test for Rectus Femoris Tightness

Aug 16, 2025

Overview

This note explains how to perform and interpret the Ely's test to assess tightness in the rectus femoris muscle using a prone position.

Ely's Test Procedure

  • Patient is positioned in prone lying on the examination table.
  • Examiner flexes the patient's knee, observing the response at the hip joint.
  • The test is performed on both sides for comparison.

Interpreting Results

  • A positive Ely's test occurs when the hip rises or elevates off the table during knee flexion.
  • The inability to keep the anterior superior iliac spine (ASIS) in contact with the table indicates possible rectus femoris tightness.

Key Observations

  • Observe for hip elevation between 60 and 90 degrees of knee flexion.
  • Compare responses on both sides for asymmetry.