Range of Motion: Neck Flexion

The Neck Flexion Test measures how far the head and neck move forward. It is usually assessed actively in sitting using a CROM device, inclinometer, smartphone tool or consistent observation process. The result helps track cervical movement, symptoms and side-to-side or session-to-session change, but it should be interpreted with posture, pain response, neurological symptoms and related neck movements.

Introduction

A client may report stiffness when looking down, reading, using a laptop or moving through neck warm-up drills. Another client may avoid neck flexion because it feels uncomfortable, tight or unfamiliar.

The Neck Flexion Test helps record active cervical flexion in a repeatable way. It does not explain the cause of symptoms or movement restriction by itself, but it provides useful baseline information when paired with pain, symptom location, neck extension, rotation, lateral flexion, posture and functional tasks.

Quick Summary

Test name: Neck Flexion Test
Purpose: Measure cervical flexion range of motion
Movement: Chin moving toward the chest
Joint/body region: Cervical spine
Plane: Sagittal plane
ROM type: Active ROM
Score: Degrees of neck flexion
Equipment: CROM device, inclinometer, smartphone inclinometer or Measurz ROM recording workflow
Best used with: Neck extension, neck rotation, neck lateral flexion, symptom monitoring, posture and functional movement notes
Key limitation: Thoracic posture and upper cervical movement can influence the result

What Is the Neck Flexion Test?

The Neck Flexion Test measures the active movement of the cervical spine as the client moves the head forward. The movement is commonly described as bringing the chin toward the chest.

The test can be measured with a cervical ROM device, digital inclinometer, smartphone application or standardised clinical process. The same method should be used each time.

Why It Is Used

The test is used to establish baseline neck movement, monitor change and record symptom response.

It may help inform:

Neck mobility programming
Workstation or activity tolerance tracking
Movement confidence
Baseline and retest comparison
Pain and symptom monitoring
Progress across sessions

What It Measures

The test measures cervical flexion ROM in degrees.

It may be influenced by:

Upper and lower cervical movement
Thoracic posture
Jaw and head position
Pain or symptoms
Client confidence
Warm-up
Device placement
Measurement method
Professional instruction

It does not identify the cause of reduced movement on its own.

Active vs Passive Range of Motion

Neck flexion is usually assessed actively, with the client moving the head under their own control.

Passive cervical ROM should only be performed when appropriate and should be recorded separately if used. For routine progress tracking, active ROM is usually the most practical and repeatable option.

Who It Is Useful For

This test may be useful for office workers, athletes, gym clients, drivers, older adults, clients with neck stiffness, and anyone where looking down, reading, screen use, posture or head movement is relevant.

Equipment Required

CROM device, inclinometer or smartphone inclinometer
Chair with stable sitting position
Pain scale
Measurz for recording ROM, pain and symptoms
Optional posture notes
Optional video

Step-by-Step Protocol or How to Apply This in Practice

Starting position

Position the client sitting tall with feet supported and eyes looking forward.

Client position

Keep the trunk upright and shoulders relaxed. Record whether the back is supported or unsupported.

Professional position

Stand beside or slightly in front of the client to observe head, neck and trunk compensation.

Body/joint setup

Start from neutral head and neck posture.

Stabilisation

Avoid excessive thoracic flexion or shoulder movement. The trunk should stay still unless the chosen method allows trunk movement.

Movement instruction

Ask the client to slowly bring the chin toward the chest as far as comfortably possible.

Measurement landmarks

If using a CROM device, follow device instructions. If using an inclinometer or smartphone, place the device consistently according to the chosen protocol.

What to ask

Ask about pain, stiffness, stretch, dizziness, headache, symptom location, symptom spread and whether symptoms are familiar.

Stopping rules

Stop if dizziness, neurological symptoms, sharp pain, nausea, visual disturbance or symptom escalation occurs.

What to record

Record degrees, pain score, symptom location, device used, sitting position, movement quality and compensation.

Number of trials

One to three trials may be used. Record best, average or selected trial consistently.

Retest consistency

Use the same chair, posture, device, placement, instructions and endpoint each session.

Scoring and Interpretation

The score is recorded in degrees.

A higher value means more cervical flexion under the tested setup. A lower value means less cervical flexion compared with baseline, expectation or related movement findings.

Interpretation is stronger when paired with:

Pain score
Symptom location
Neck extension
Neck rotation
Neck lateral flexion
Headache or dizziness notes
Posture and task tolerance
Movement quality

The result does not explain why movement is reduced or painful by itself.

Reliability and Validity

A systematic review of smartphone applications for neck ROM reported good to excellent reliability and moderate to very high validity across app types, but the overall quality of evidence was rated low to very low. This supports smartphone tools as potentially useful when standardised, while still requiring careful interpretation.  

A 2023 study on cervical ROM using inertial technology reported good reliability overall, with excellent reliability for flexion and right lateral bending angles in healthy participants.  

Common Errors and Testing Limitations

Common errors include allowing thoracic flexion, changing sitting posture, inconsistent device placement, moving too quickly, not recording symptoms, ignoring dizziness or neurological symptoms, and comparing results from different devices as if identical.

Limitations include day-to-day variability, symptom irritability, posture, device differences, client effort and endpoint interpretation.

Practical Applications

Use neck flexion ROM to monitor movement tolerance, track progress, compare with other cervical directions and guide exercise or activity planning.

How to Record This in Measurz

In Measurz, record baseline neck flexion ROM in degrees using the inclinometer or chosen device. Record pain score, symptom location, movement direction, test position, device used, posture, dizziness or headache notes, compensation and confidence.

Track progress across sessions and compare with neck extension, lateral flexion, rotation and relevant functional tasks.

Related Tests or Internal Linking Suggestions

Neck Extension Test
Neck Lateral Flexion Test
Neck Rotation Test
Spine Flexion Test
Shoulder Flexion Test
Posture Assessment
Functional Reach Test

FAQs

What does the Neck Flexion Test measure?

It measures active cervical flexion as the client moves the chin toward the chest.

What is normal neck flexion ROM?

Reference values vary by age, device and method. Baseline-to-retest comparison using the same method is often more useful than one universal value.

How should neck flexion be measured?

Use a CROM device, inclinometer or smartphone tool with consistent posture, device placement and instructions.

What symptoms should stop the test?

Stop for dizziness, sharp pain, visual disturbance, nausea, neurological symptoms or symptoms that escalate.

How should neck flexion be tracked?

Use the same position, device, posture and endpoint each session.

Key Takeaways

Neck flexion ROM measures forward cervical movement.
Thoracic posture can affect the result.
Active ROM is usually the most practical method.
Reference values vary, so consistent retesting is important.
Measurz should capture degrees, pain, symptoms, device and posture.

References

Elgueta-Cancino, E., et al. (2022). Measurement properties of smartphone applications for the measurement of neck range of motion: A systematic review and meta-analysis. BMC Musculoskeletal Disorders. Needs verification.

de Koning, C. H., et al. (2020). Normative values of cervical range of motion for both children and adults: A systematic review. Musculoskeletal Science and Practice. Needs verification.

Martínez-Rodríguez, A., et al. (2023). Cervical range of motion assessment through inertial technology: A validity and reliability study. Sensors, 23(13), 6013.

Clarkson, H. M. (2020). Musculoskeletal assessment: Joint range of motion, muscle testing, and function (4th ed.). Wolters Kluwer.