Hip Orthopaedic Test: Log Roll Test

The Log Roll Test is a passive hip special test performed with the client lying supine while the professional gently rolls the relaxed lower limb into internal and external rotation. It is commonly used to support assessment reasoning around intra-articular hip irritation, capsular laxity, hip instability-type presentations, labral involvement, femoroacetabular impingement-type presentations or general hip joint symptom response.

A positive finding may include familiar hip or groin pain, clicking, apprehension, guarding, excessive range, restricted range or side-to-side asymmetry. However, the Log Roll Test does not confirm a specific hip condition on its own and should be interpreted alongside history, symptom behaviour, hip range of motion, strength, functional testing and other hip special tests.

Introduction

The Log Roll Test is a simple but useful hip special test. It is performed with the client lying on their back while the professional passively rotates the whole lower limb, like rolling a log. The movement produces hip internal and external rotation with minimal active effort from the client.

Because the test is gentle and relatively unloaded, it can be useful early in a hip assessment to observe whether passive hip rotation reproduces familiar symptoms. It may also help identify guarding, capsular irritability, excessive passive rotation, asymmetry or mechanical symptoms.

The Log Roll Test is often described as a test for intra-articular hip involvement. However, that wording should be used carefully. A positive test may support suspicion that the hip joint is relevant to the presentation, but it does not confirm the exact structure or condition involved. Pain, clicking or abnormal movement may be influenced by labral irritation, capsular sensitivity, femoroacetabular morphology, ligamentous laxity, muscle guarding, hip osteoarthritis-type changes or other causes.

For Measurz users, the value of the Log Roll Test is in recording a repeatable finding: side tested, pain location, symptom quality, range response, asymmetry, clicking, apprehension and comparison side.

Quick Summary

Test name: Log Roll Test
Region: Hip and groin
Primary purpose: Assess passive hip rotation symptom response and possible intra-articular hip contribution
Commonly associated presentations: Hip/groin pain, labral involvement, FAI-type symptoms, hip joint irritability, capsular laxity, hip instability-type presentations
Positive finding: Familiar pain, clicking, apprehension, guarding, abnormal end-feel, excessive range or meaningful side-to-side difference
Negative finding: No familiar pain, no mechanical symptoms, no meaningful asymmetry and relaxed passive rotation
Main limitation: It does not identify one specific structure or condition on its own.

What Is the Log Roll Test?

The Log Roll Test is a passive hip rotation test performed in supine.

The professional gently rolls the entire lower limb into internal and external rotation while the client stays relaxed. The movement rotates the femoral head within the acetabulum and can provoke symptoms if the hip joint or surrounding structures are sensitive.

The test may be used to observe:

• Hip internal rotation response
• Hip external rotation response
• Pain reproduction
• Mechanical symptoms
• Apprehension
• Guarding
• Capsular laxity
• Side-to-side asymmetry
• Range difference
• End-feel quality

The Log Roll Test is usually performed as part of a broader hip assessment rather than as a stand-alone test.

Why It Is Used

The Log Roll Test may be used to support assessment reasoning around:

• Hip or groin pain
• Intra-articular hip symptom contribution
• Hip joint irritability
• Labral involvement
• FAI-type presentations
• Capsular laxity
• Hip instability-type presentations
• Hip osteoarthritis-type presentations
• Passive hip rotation tolerance
• Side-to-side hip mobility comparison
• Early screening before more provocative tests

It is often useful because it is less aggressive than many loaded or end-range hip provocation tests.

What It Assesses

The Log Roll Test assesses the client’s response to passive hip internal and external rotation in supine.

It may provide information about:

• Passive hip rotation tolerance
• Hip or groin symptom reproduction
• Mechanical symptoms such as clicking or catching
• Protective guarding
• Rotation range asymmetry
• Possible capsular laxity or excessive rotation
• Comparison between sides
• Whether passive hip motion is relevant to symptoms

It does not directly assess:

• Labral integrity with certainty
• Cartilage status
• FAI morphology
• Hip osteoarthritis with certainty
• Imaging findings
• Hip strength
• Dynamic gait mechanics
• Pelvic control
• Readiness for sport or work
• Treatment needs

Who It Is Useful For

The Log Roll Test may be useful for clients with:

• Hip pain
• Groin pain
• Anterior hip symptoms
• Mechanical hip symptoms
• Clicking, catching or giving-way sensations
• Pain with turning, pivoting or rolling in bed
• Hip stiffness or asymmetry
• Suspected hip joint irritability
• Possible hip instability-type symptoms
• A need for baseline and retest documentation

It may also be useful for professionals learning to differentiate passive hip rotation response from active movement or loaded functional tasks.

When to Use This Test

Consider using the Log Roll Test when:

• Hip or groin symptoms are part of the presentation
• You want a gentle early hip provocation test
• Passive rotation may reproduce symptoms
• You need to compare passive rotation side to side
• Mechanical symptoms are reported
• You are deciding whether more provocative hip tests are appropriate
• You are building a broader hip assessment profile

It can be used before stronger tests such as FADIR, FABER, Scour or Fitzgerald when irritability needs to be considered.

When Not to Use or When to Be Cautious

Use caution or avoid the test when:

• There is suspected fracture, dislocation or acute major trauma
• The hip is highly irritable
• Passive rotation is already sharply painful
• Recent surgery makes passive rotation inappropriate
• The client cannot tolerate supine positioning
• The client has severe guarding
• Neurological symptoms require further assessment
• The professional cannot move the limb safely

Stop the test if symptoms increase sharply, the client asks to stop, the hip feels unstable in a concerning way, or the movement cannot be performed safely.

Equipment Required

The Log Roll Test usually requires no special equipment.

Optional equipment includes:

• Measurz app
• Pain rating scale
• Plinth or firm testing surface
• Goniometer or inclinometer if measuring rotation range separately
• Notes field for symptoms, clicking, range and comparison side
• Video recording for education or comparison where appropriate

Step-by-Step Protocol / Practice

Setup

Ask the client to lie supine on a plinth or firm surface.

Explain that you will gently rotate the whole leg in and out while they stay relaxed. Test the less symptomatic side first where appropriate.

Client position

The client lies supine with:

• Head and trunk relaxed
• Pelvis neutral
• Both legs extended
• Tested leg relaxed
• Foot and ankle relaxed
• No active assistance from the client

The tested limb should be free to rotate from the hip.

Examiner/professional position

The professional stands at the foot or side of the tested leg.

The professional controls the lower limb from the ankle, lower leg or distal thigh depending on comfort and limb size.

Hand placement

One or both hands may be placed around the lower leg, ankle or distal thigh.

The grip should be supportive and comfortable, not painful.

Stabilisation

The pelvis should be observed for excessive movement. The goal is to rotate the hip, not twist the lumbar spine or pelvis.

Avoid forcing pelvic stabilisation unless required for safety or consistency.

Movement or force direction

Gently roll the whole lower limb into:

• Hip internal rotation
• Hip external rotation

The movement should be slow, smooth and controlled.

The professional observes range, end-feel, symptoms and asymmetry.

Instructions

Tell the client:

“Let your leg stay relaxed. I am going to gently roll your leg in and out. Tell me if this reproduces your familiar symptoms, where you feel them and whether you notice clicking, catching or apprehension.”

Positive finding

A positive finding may include:

• Familiar hip or groin pain
• Painful clicking or catching
• Apprehension
• Protective guarding
• Excessive passive rotation compared with the other side
• Restricted passive rotation compared with the other side
• Abnormal or painful end-feel
• Reproduction of the client’s typical symptoms

Record the specific feature that made the test positive.

Negative finding

A negative finding may include:

• No familiar pain
• No relevant clicking or catching
• No apprehension
• Relaxed passive rotation
• Similar range to the other side
• No meaningful symptom reproduction

A negative finding does not fully exclude hip involvement.

Stopping criteria

Stop the test if:

• Sharp pain occurs
• The client asks to stop
• The client cannot relax
• Apprehension becomes significant
• The hip feels unstable in a concerning way
• Neurological symptoms occur
• The test cannot be performed safely

Safety notes

The Log Roll Test should be gentle. Avoid sudden twisting, forceful rotation or repeated painful testing.

Positive and Negative Test Interpretation

A positive Log Roll Test may increase suspicion that the hip joint or surrounding structures are relevant to the client’s symptoms. This is particularly meaningful when the test reproduces familiar anterior hip or groin pain, painful clicking, apprehension or a clear side-to-side difference.

Excessive external or internal rotation compared with the other side may suggest capsular laxity or instability-type features, but this does not confirm instability by itself. Restricted rotation may suggest stiffness, guarding, pain inhibition or structural limitation, depending on the broader assessment.

A positive test does not confirm a labral tear, FAI syndrome, hip osteoarthritis, capsular laxity or any other specific condition. It should be interpreted as a symptom and movement response.

A negative Log Roll Test may reduce suspicion that passive supine rotation is a major symptom driver in that session. However, a negative test does not exclude hip-related symptoms, especially if symptoms occur during loaded, end-range, sport-specific or dynamic tasks.

The result is more meaningful when interpreted with:

• History
• Pain location
• Mechanical symptoms
• Hip range of motion
• FADIR
• FABER
• Scour Test
• Fitzgerald Test
• Hip strength
• Gait
• Squat or lunge assessment
• Sport or work demands

Sensitivity, Specificity and Diagnostic Accuracy

At the time of writing, high-quality diagnostic accuracy evidence reporting sensitivity, specificity or likelihood ratios for the Log Roll Test as a stand-alone diagnostic test appears limited.

This means the test should be used as a symptom provocation and assessment reasoning tool rather than as a stand-alone diagnostic test.

Current evidence and interpretation points include:

• Hip physical examination tests vary in diagnostic accuracy across conditions and populations.
• Systematic review evidence suggests that most individual hip physical examination tests have weak diagnostic properties when used alone.
• The Log Roll Test may be clinically useful because it is a relatively gentle way to observe passive hip rotation response.
• A positive test may increase suspicion of hip joint involvement when it matches history and other findings.
• A negative test does not fully exclude intra-articular hip pathology, labral involvement, FAI-type symptoms or other hip-related sources.

Because formal diagnostic accuracy values are limited, professionals should record the response descriptively rather than claiming diagnostic certainty.

Reliability and Validity

Inter-rater reliability evidence for the Log Roll Test has been reported around κ = 0.61, suggesting moderate-to-substantial agreement when the test is performed and interpreted consistently.

Reliability may improve when the professional standardises:

• Client position
• Limb position
• Movement speed
• Rotation range
• Symptom questions
• Definition of a positive test
• Side-to-side comparison
• Recording of pain, clicking and apprehension

Validity is limited as a stand-alone diagnostic test. The Log Roll Test has practical value as a passive hip rotation and symptom response test, but it does not directly verify labral, capsular, cartilage or bony pathology.

Common Errors and Limitations

Common errors include:

• Rotating too forcefully
• Moving too quickly
• Allowing the client to actively assist
• Not recording pain location
• Treating painless clicking as automatically positive
• Ignoring apprehension
• Not comparing sides
• Not recording range asymmetry
• Assuming a positive test confirms labral pathology
• Assuming a negative test excludes hip involvement

Limitations include:

• Diagnostic accuracy evidence is limited
• Passive supine testing may not reflect dynamic loading
• Pain may arise from multiple structures
• Mechanical symptoms are not specific to one condition
• Range may be influenced by guarding
• Laxity may be normal for some clients
• The test should not be used alone for decision-making

Practical Applications

The Log Roll Test may be useful for:

• Early hip symptom screening
• Observing passive hip rotation response
• Assessing irritability before stronger tests
• Recording mechanical symptom reproduction
• Comparing side-to-side range and apprehension
• Supporting intra-articular hip assessment reasoning
• Client education
• Measurz baseline and retest documentation

In Measurz, Log Roll Test findings can be recorded alongside FABER, FADIR, Fitzgerald, Scour, hip range of motion, hip strength, gait, squat and functional assessment.

How to Record This in Measurz

Record:

• Test name: Log Roll Test
• Side tested
• Result: positive, negative, unclear or unable to test
• Pain score
• Symptom location
• Symptom quality
• Familiar symptom reproduction
• Internal rotation response
• External rotation response
• Clicking, catching or apprehension
• Range asymmetry
• End-feel
• Comparison side
• Irritability
• Guarding or compensations
• Reason for stopping if relevant
• Related findings
• Confidence in result
• Further assessment notes if appropriate
• Retest date if relevant

Recording these details improves repeatability, communication, client education, assessment reasoning, monitoring over time, team consistency and reporting quality.

Related Tests / Internal Links

• FABER Test
• FADIR Test
• Fitzgerald Test
• Scour Test
• Hip internal rotation
• Hip external rotation
• Hip flexion range of motion
• Hip strength testing
• Single-leg squat
• Gait assessment
• Toe Touch Test

FAQs

What does the Log Roll Test assess?

It assesses passive hip rotation response and may support reasoning around hip joint involvement, irritability, laxity or mechanical symptoms.

What is a positive Log Roll Test?

A positive finding may include familiar hip or groin pain, painful clicking, apprehension, guarding, abnormal range or clear side-to-side asymmetry.

Does the Log Roll Test diagnose a labral tear?

No. It may support suspicion of intra-articular hip involvement, but it does not confirm a labral tear.

Does a negative Log Roll Test exclude hip pathology?

No. A negative result does not fully exclude hip-related symptoms, especially during loaded or dynamic tasks.

Should the client stay relaxed?

Yes. The test is passive, so active assistance or resistance can change the result.

Is clicking always positive?

No. Clicking is more meaningful when it is painful, familiar or associated with the client’s typical symptoms.

Should both hips be tested?

Yes. Side-to-side comparison improves interpretation.

Is the test forceful?

No. The movement should be slow, gentle and controlled.

Key Takeaways

The Log Roll Test is a passive supine hip rotation test.

It can help record hip symptom response, mechanical symptoms, guarding, laxity or range asymmetry.

A positive test may support hip-related assessment reasoning but does not confirm a specific condition.

A negative test does not fully exclude hip involvement.

Inter-rater reliability has been reported around κ = 0.61 when performed consistently.

Measurz recording should include side, symptoms, clicking, apprehension, range response, end-feel and comparison side.

References

Martin, R. L., & Sekiya, J. K. (2008). The interrater reliability of 4 clinical tests used to assess individuals with musculoskeletal hip pain. Journal of Orthopaedic & Sports Physical Therapy, 38(2), 71–77. https://doi.org/10.2519/jospt.2008.2677

Reiman, M. P., Goode, A. P., Hegedus, E. J., Cook, C. E., & Wright, A. A. (2013). Diagnostic accuracy of clinical tests of the hip: A systematic review with meta-analysis. British Journal of Sports Medicine, 47(14), 893–902. https://doi.org/10.1136/bjsports-2012-091035

Reiman, M. P., Goode, A. P., Cook, C. E., Hölmich, P., & Thorborg, K. (2015). Diagnostic accuracy of clinical tests for the diagnosis of hip femoroacetabular impingement/labral tear: A systematic review with meta-analysis. British Journal of Sports Medicine, 49(12), 811. https://doi.org/10.1136/bjsports-2014-094302

Reiman, M. P., Thorborg, K., & Hölmich, P. (2015). Physical examination tests for hip dysfunction and injury. British Journal of Sports Medicine, 49(6), 357–361. https://doi.org/10.1136/bjsports-2013-092994