The Ely Test assesses rectus femoris flexibility and anterior thigh tension during passive knee flexion. A positive result may suggest reduced quadriceps flexibility or anterior thigh tightness but does not identify the exact source of restriction on its own.

Introduction

Reduced quadriceps flexibility may influence running mechanics, squatting patterns and anterior hip or knee loading.

The Ely Test is commonly used to assess rectus femoris length by passively flexing the knee while observing hip movement and symptom response.

It is often combined with:

• hip extension assessment
• squat analysis
• running assessment
• quadriceps flexibility testing

A positive result may suggest increased anterior thigh tension or reduced rectus femoris flexibility.

Quick Summary

Test name: Ely Test
Body region: Hip and thigh
Purpose: Assess rectus femoris flexibility
Positive finding: Hip rises from the table or anterior thigh tightness during knee flexion
Negative finding: Full knee flexion without compensatory hip movement
Best used with: Hip mobility and movement assessment
Key limitation: Pelvic positioning can affect results

What Is the Ely Test?

The Ely Test is performed by passively flexing the knee while the client lies prone.

The test assesses:

• rectus femoris flexibility
• anterior thigh tension
• hip compensation during knee flexion

Because the rectus femoris crosses both the hip and knee, reduced flexibility may cause the hip to rise during testing.

Why It Is Used

The test may help:

• assess quadriceps flexibility
• identify anterior thigh tightness
• guide mobility programming
• support lower limb movement assessment

It is commonly used in:

• running populations
• field sport athletes
• movement screening settings
• lower limb flexibility assessment

What It Assesses

The Ely Test assesses:

• rectus femoris flexibility
• anterior thigh tension
• compensatory hip movement
• passive knee flexion tolerance

It does not diagnose injury or identify the exact source of mobility restriction.

Who It Is Useful For

This test may be useful for:

• exercise professionals
• rehabilitation practitioners
• running coaches
• strength and conditioning coaches
• movement assessment professionals

When to Use This Test

Use when there is:

• anterior thigh tightness
• limited knee flexion mobility
• reduced hip extension tolerance
• movement restrictions during running or squatting
• suspected quadriceps flexibility limitation

When Not to Use or When to Be Cautious

Use caution with:

• acute quadriceps strain
• severe knee pain
• recent surgery
• acute hip irritation
• inability to tolerate prone positioning

Stop testing if:

• pain becomes severe
• cramping occurs
• symptoms escalate significantly

Equipment Required

Treatment table
Pain scale
Measurz recording workflow

Step-by-Step Protocol / Practice

Setup

Position the client lying prone on a treatment table.

Client Position

• Hips neutral
• Legs relaxed
• Pelvis level against the table

Examiner/Professional Position

Stand beside the tested limb.

Hand Placement

• One hand supports the lower leg
• Other hand monitors pelvic or hip movement

Stabilisation

Maintain pelvic stability and monitor compensatory hip lift.

Movement or Force Direction

Passively flex the knee toward the buttocks.

Observe:

• knee flexion range
• anterior thigh tightness
• pelvic movement
• hip rise from the table

Instructions

Ask the client to:

• remain relaxed
• report discomfort or tightness
• describe symptom location if present

Positive Finding

A positive Ely Test may include:

• hip lifting from the table
• anterior thigh tightness
• reduced knee flexion tolerance
• asymmetrical movement compared to the opposite side

Negative Finding

A negative finding involves:

• smooth knee flexion
• no compensatory hip rise
• minimal anterior thigh tension

Stopping Criteria

Stop if:

• pain becomes severe
• cramping develops
• guarding limits assessment

Safety Notes

Use slow movement and avoid forcing end-range knee flexion.

Positive and Negative Test Interpretation

A positive Ely Test may suggest:

• reduced rectus femoris flexibility
• anterior thigh tightness
• increased quadriceps tension during knee flexion

It becomes more meaningful when combined with:

• hip extension limitations
• running assessment
• squat movement findings
• side-to-side comparison

A negative test may suggest normal quadriceps flexibility during passive movement.

The test does not confirm muscle injury or identify the exact cause of restriction on its own.

Sensitivity, Specificity and Diagnostic Accuracy

The Ely Test is primarily used as a flexibility and movement assessment rather than a diagnostic orthopaedic test.

At the time of writing, high-quality peer-reviewed diagnostic accuracy evidence reporting sensitivity, specificity or likelihood ratios for this exact test appears limited.

The test should therefore be interpreted as:

• a mobility assessment tool
• a flexibility screening measure
• part of broader movement assessment reasoning

rather than a standalone diagnostic procedure.

Reliability and Validity

Reliability improves with:

• consistent pelvic stabilisation
• standardised knee flexion speed
• side-to-side comparison

Validity is stronger when findings match:

• movement limitations
• training demands
• anterior thigh tension complaints
• reduced hip extension tolerance

Common Errors and Limitations

Common errors include:

• allowing excessive pelvic movement
• forcing knee flexion aggressively
• not comparing sides
• poor client relaxation

Limitations include:

• subjective interpretation of tightness
• influence of hip positioning
• limited standalone diagnostic value

Practical Applications

The Ely Test may help:

• assess quadriceps flexibility
• guide mobility programming
• monitor flexibility changes over time
• support running and squat assessment
• contribute to lower limb movement screening

How to Record This in Measurz

Record:

• test name
• side tested
• result (positive / negative / unclear)
• knee flexion tolerance
• hip lift presence
• pain or tightness location
• pain score (0–10)
• pelvic compensation observed
• side-to-side comparison
• movement quality
• related findings
• interpretation notes

Related Tests / Internal Links

Thomas Test
Ober’s Test
Hamstring Flexibility Assessment
Squat Assessment
Hip Extension Assessment
Single Leg Balance Test

FAQs

What does the Ely Test assess?

It assesses rectus femoris flexibility and anterior thigh tension.

What is a positive Ely Test?

Hip lifting from the table or significant anterior thigh tightness during knee flexion.

Does it diagnose a muscle injury?

No. It only helps assess flexibility and movement restriction.

Why is pelvic control important?

Poor pelvic control can change the test result and reduce accuracy.

Should it be used alone?

No. It works best with broader movement and mobility assessment.

Key Takeaways

What does the Ely Test assess?

Quadriceps flexibility and anterior thigh tension.

Does it diagnose injury?

No. It only helps support flexibility assessment reasoning.

What does a positive result mean?

It may suggest reduced rectus femoris flexibility or increased anterior thigh tightness.

What does a negative result mean?

It may suggest normal flexibility during passive knee flexion.

Should it be used alone?

No. It works best with other mobility and movement assessments.

What is the main value of the test?

Helping identify flexibility restrictions that may affect lower limb movement.

References

Peeler, J., et al. (2018–2022). Reliability and interpretation of lower limb flexibility testing. Journal of Strength and Conditioning Research.

Gabbe, B. J., et al. (2020–2023). Lower limb flexibility and movement assessment updates. British Journal of Sports Medicine.

Malliaras, P., et al. (2021). Clinical interpretation of muscle flexibility and movement restriction. Journal of Orthopaedic & Sports Physical Therapy.