Ankle Orthopaedic Test: Eversion Stress Test

The Eversion Stress Test is used to assess medial ankle structures, particularly the deltoid ligament complex, by applying an eversion stress to the ankle. A positive finding may include medial ankle pain, increased eversion laxity or apprehension compared with the other side. Evidence for diagnostic accuracy is limited, so the result should be interpreted with history, mechanism, palpation, swelling, imaging where relevant and other ankle tests.

Introduction

A client may report medial ankle pain after an eversion or rotational ankle injury. The Eversion Stress Test can help assess whether medial ankle structures may be sensitive or lax under eversion loading.

Medial ankle ligament injuries are less common than lateral ankle sprains and may occur with rotational injuries, syndesmosis involvement or more complex ankle trauma. Because diagnostic evidence for the exact clinical test is limited, the Eversion Stress Test should support, not replace, broader assessment.

Quick Summary

Test name: Eversion Stress Test
Purpose: Assess medial ankle response to eversion stress
Body region: Ankle
Commonly associated presentation: Deltoid ligament irritation, medial ankle sprain, rotational ankle injury
Positive finding: Medial ankle pain, increased eversion laxity, apprehension or altered end-feel compared with the other side
Negative finding: No meaningful pain, laxity or apprehension under eversion stress
Best used with: Palpation, ankle ROM, syndesmosis tests, anterior drawer, talar tilt, imaging referral when indicated
Key limitation: High-quality diagnostic accuracy evidence for this exact test is limited

What Is the Eversion Stress Test?

The Eversion Stress Test is an orthopaedic ankle test that applies an eversion force to the foot and ankle to stress medial ankle structures. It is commonly associated with assessment of the deltoid ligament complex.

The test provides information about pain, laxity, end-feel and side-to-side difference. It does not confirm a deltoid ligament injury on its own.

Why It Is Used

The test is used when medial ankle ligament involvement is suspected. It may help guide further assessment when the client reports medial ankle pain, rotational injury, eversion trauma or symptoms that do not fit a simple lateral ankle sprain pattern.

What It Assesses

The Eversion Stress Test assesses the response of the medial ankle to eversion loading. It may provide information about deltoid ligament sensitivity, medial ankle laxity and symptom reproduction.

It does not assess the full syndesmosis, fracture, osteochondral injury, posterior tibial tendon function or complete ankle stability.

Who It Is Useful For

This test may be useful for clients with medial ankle pain, eversion injury, rotational ankle trauma, suspected deltoid ligament involvement or complex ankle sprain presentations.

It may not be suitable in highly irritable acute injuries, suspected fracture, severe swelling, inability to tolerate manual stress or suspected unstable ankle injury.

When to Use This Test

Use this test when the history and symptom location suggest medial ankle involvement. It is most useful when combined with palpation of the deltoid region, weight-bearing tolerance, ankle ROM, syndesmosis testing and clinical reasoning.

When Not to Use or When to Be Cautious

Use caution with suspected fracture, severe acute pain, marked swelling, neurological symptoms, obvious deformity or high concern for unstable injury. Referral or imaging may be needed before stress testing.

Equipment Required

Treatment table or chair
Pain scale
Measurz for recording
Optional comparison notes
Optional referral notes where further assessment is indicated

Step-by-Step Protocol / Practice

Setup

Position the client sitting or lying with the ankle accessible and relaxed.

Client position

The client should relax the lower limb as much as possible.

Examiner position

Stand or sit facing the foot.

Hand placement

Stabilise the distal tibia and fibula with one hand. Hold the calcaneus and foot with the other hand.

Stabilisation

Keep the lower leg stable while applying the eversion force through the foot and hindfoot.

Movement or force direction

Apply a controlled eversion stress to the ankle. Avoid sudden or forceful movement.

Instructions

Ask the client to report medial ankle pain, familiar symptoms, apprehension or a sense of instability.

Positive finding

A positive finding may include medial ankle pain, increased eversion laxity, apprehension or altered end-feel compared with the opposite side.

Negative finding

A negative finding is no meaningful pain, laxity or apprehension under eversion stress.

Stopping criteria

Stop if pain increases sharply, symptoms spread, the client guards strongly or the test cannot be performed safely.

Safety notes

Use gentle graded force. Do not use the test to force range or provoke severe symptoms.

Positive and Negative Test Interpretation

A positive Eversion Stress Test may increase suspicion of medial ankle structure involvement when the client’s history, mechanism, tenderness and swelling pattern support that interpretation. It does not confirm a deltoid ligament injury on its own.

A negative test may reduce suspicion of marked medial ankle laxity or sensitivity, but it does not exclude deltoid ligament involvement, syndesmosis injury or other medial ankle pathology.

Interpretation is stronger when the test is combined with palpation, mechanism, swelling, syndesmosis tests, weight-bearing function and imaging where appropriate.

Sensitivity, Specificity and Diagnostic Accuracy

High-quality diagnostic accuracy evidence for the exact Eversion Stress Test and deltoid ligament injury is limited. A 2022 systematic review of ankle orthopaedic tests included eversion stress among tests used for medial ankle injury assessment, but concluded that overall reliability and validity evidence for ankle physical examination tests is limited and that tests should not be used in isolation.  

Because robust sensitivity, specificity and likelihood ratio values for the exact clinical test are not consistently available, diagnostic accuracy should be described as limited. A positive result may increase suspicion when it fits the clinical presentation, while a negative result does not fully exclude injury.

Reliability and Validity

Reliability and validity evidence for this specific test is limited. The broader ankle orthopaedic test literature suggests variability in examiner technique, injury definitions, timing after injury and reference standards.  

Consistency improves when the same ankle position, hand placement, force direction, comparison side and symptom criteria are used.

Common Errors and Limitations

Common errors include applying force too quickly, failing to stabilise the lower leg, interpreting pain alone as laxity, not comparing sides and not considering syndesmosis or fracture-related presentations.

Limitations include limited diagnostic accuracy evidence, subjective force application and overlap between medial ankle injury, syndesmosis injury and other ankle pathologies.

Practical Applications

Use the Eversion Stress Test as part of a medial ankle assessment. It can help document symptom response and side-to-side difference, guide whether further testing is needed and support communication across a professional team.

How to Record This in Measurz

Record test name, side tested, result as positive, negative, unclear or unable to test, pain score, medial ankle symptom location, symptom quality, ankle position, force direction, laxity compared with the other side, end-feel, apprehension, swelling, confidence in result, reason for stopping and related findings.

Recording these details improves repeatability, communication, professional reasoning and retesting quality.

Related Tests / Internal Links

Kleiger’s Test
Squeeze Test
Anterior Drawer Test of the Ankle
Talar Tilt Test
Weight-Bearing Lunge Test
Single-Leg Balance Test
Y-Balance Test

FAQs

What does a positive Eversion Stress Test mean?

It may suggest medial ankle sensitivity or laxity when it matches the history and other findings.

Does it diagnose a deltoid ligament injury?

No. It can support clinical reasoning but does not confirm the condition on its own.

Should it be used after acute ankle injury?

Use caution in acute injuries, especially when swelling, pain or fracture concern is present.

What should be recorded?

Record pain, laxity, end-feel, apprehension, side comparison and confidence in the result.

Is diagnostic accuracy well established?

No. Exact-test diagnostic accuracy evidence is limited.

Key Takeaways

The Eversion Stress Test assesses medial ankle response to eversion loading.
A positive result may increase suspicion of deltoid ligament involvement but does not confirm injury.
A negative result does not fully exclude medial ankle pathology.
Diagnostic accuracy evidence is limited.
Record side, symptoms, laxity and interpretation notes in Measurz.

References

Beynon, A., Le May, S., & Theroux, J. (2022). Reliability and validity of physical examination tests for the assessment of ankle instability. Chiropractic & Manual Therapies, 30, 58. doi:10.1186/s12998-022-00470-0

Netterström-Wedin, F., Matthews, M., & Bleakley, C. (2022). Diagnostic accuracy of clinical tests assessing ligamentous injury of the talocrural and subtalar joints: A systematic review with meta-analysis. Sports Health, 14(3), 336–347. doi:10.1177/19417381211029953

Delahunt, E., Bleakley, C. M., Bossard, D. S., Caulfield, B. M., Docherty, C. L., Doherty, C., et al. (2018). Clinical assessment of acute lateral ankle sprain injuries: ROAST consensus statement and recommendations. British Journal of Sports Medicine, 52(20), 1304–1310.