Neck DisabilityNCT07444944
Neck Disability and Temporomandibular Disorders
An observational study of Neck Disability and Temporomandibular Disorders (TMD), run by Istanbul Medipol University Hospital at 1 site in Turkey (Türkiye).
Trial summary
This cross-sectional study investigates neck-related disability in individuals with chronic neck pain by examining the combined influence of temporomandibular disorders, sleep quality, and cervical sensorimotor function within a single analytical model. Read more about this study
- Who is it for?
- Ages 18 to 55 yearsHealthy volunteers can take part
- Conditions the study is for
- Neck Disability, Temporomandibular Disorders (TMD)
- How many people
- 80 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 1 Jan 2026to 24 Feb 2026
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 55 years
- All sexes
- Healthy volunteers accepted
- Adult
Study population: individuals presenting with chronic neck pain to the Physical Medicine and Rehabilitation outpatient clinic of our hospital.
Who may be able to join
- Participants aged between 18 and 55 years
- non-specific neck pain lasting for at least three months
- participants who were able to read and write in Turkish
Who cannot join
- Individuals with a history of cervical surgery,
- neck trauma within the previous year,
- neurological or rheumatological disorders,
- cervical radiculopathy,
- inability to discontinue analgesic medication within 48 hours prior to assessment,
- pregnancy,
- cognitive impairment
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Neck Disability in Chronic Neck Pain: Associations With Temporomandibular Disorders, Sleep Quality, and Cervical Sensorimotor Function
This cross-sectional study investigates neck-related disability in individuals with chronic neck pain by examining the combined influence of temporomandibular disorders, sleep quality, and cervical sensorimotor function within a single analytical model. Although these factors have previously been investigated separately, their combined contribution to disability has not been sufficiently explored. By integrating these clinical variables within one framework, our study aims to provide a multidimensional clinical perspective relevant to assessment and rehabilitation planning in musculoskeletal practice. Given the increasing clinical recognition of the interaction between temporomandibular and cervical systems, this study may help clinicians better understand multidimensional contributors to disability in chronic neck pain.
- Conditions
- Neck Disability, Temporomandibular Disorders (TMD)
- Keywords
- Neck pain; Temporomandibular disorders; Sensorimotor control; Proprioception
- Medical subject headings
- Temporomandibular Joint Disorders, Neck Pain
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| TMD-positive | TMD-negative | |
| TMD-negative | Not described |
What is being measured
The primary outcome is the main question the study is designed to answer.
neck disability
Neck disability was evaluated by The Neck Disability Index (NDI) total score
The NDI consists of 10 questions in total, and each question evaluates a different area of daily life. Each question is scored between 0 and 5 points:
0 = no problem at all, 5 = maximum limitation. The total score range can be: Minimum: 0 and Maximum: 50.
Measured: Primary outcome (NDI) was measured once at baseline during the cross-sectional assessment.
Secondary outcomes (1)
Sleep quality
Sleep quality was assessed using the Pittsburgh Sleep Quality Index (PSQI). The sleep-related assessment consists of 7 components, each scored between 0 and 3: 0 = no problem and 3 = serious problem. The total score can range from a minimum of 0 to a maximum of 21. As the score increases, sleep quality deteriorates: ≤5 good sleep quality and >5 poor sleep quality.
Measured: at baseline
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted3 Mar 2026
- Study start1 Jan 2026
- Primary completion20 Feb 2026
- Study completion24 Feb 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Neck DisabilityStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Other
- Time perspective
- Cross-sectional
- Enrolment
- 80 participants (actual)
Sponsor and investigators
- Lead sponsor
- Istanbul Medipol University Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Seyda Ersahan, DDS, PhD, Istanbul Medipol University Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07444944
- Sponsor's protocol ID
- E-10840098-202.3.02-466
- Status last verified
- Mar 2026
- First submitted
- 24 Feb 2026
- Last updated
- 3 Mar 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: The datasets generated and/or analyzed during the current study are available from the corresponding author upon reasonable request. But we can share IPD after publication of our article.
Study at a glance
From the registry record, last updated by the sponsor on 3 Mar 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Neck Disability in Chronic Neck Pain: Associations With Temporomandibular Disorders, Sleep Quality, and Cervical Sensorimotor Function
- ClinicalTrials.gov ID
- NCT07444944
- Acronym / sponsor ID
- E-10840098-202.3.02-466
- Conditions
- Neck Disability, Temporomandibular Disorders (TMD)
- Keywords
- Neck pain; Temporomandibular disorders; Sensorimotor control; Proprioception
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 80 participants (actual)
- Lead sponsor
- Istanbul Medipol University HospitalUniversity, hospital or other
- Study start
- 1 Jan 2026 (actual)
- Primary completion
- 20 Feb 2026 (actual)
- Study completion
- 24 Feb 2026 (actual)
- First posted
- 3 Mar 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This cross-sectional study investigates neck-related disability in individuals with chronic neck pain by examining the combined influence of temporomandibular disorders, sleep quality, and cervical sensorimotor function within a single analytical model. Although these factors have previously been investigated separately, their combined contribution to disability has not been sufficiently explored. By integrating these clinical variables within one framework, our study aims to provide a multidimensional clinical perspective relevant to assessment and rehabilitation planning in musculoskeletal practice. Given the increasing clinical recognition of the interaction between temporomandibular and cervical systems, this study may help clinicians better understand multidimensional contributors to disability in chronic neck pain.
Study design
- Observational model
- Other
- Time perspective
- Cross-sectional
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| TMD-positive | – | –TMD-negative |
| TMD-negative | – | – |
Who may qualify
- Ages
- 18 to 55 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
- Study population
- individuals presenting with chronic neck pain to the Physical Medicine and Rehabilitation outpatient clinic of our hospital.
Key inclusion criteria (3 listed)
- Participants aged between 18 and 55 years
- non-specific neck pain lasting for at least three months
- participants who were able to read and write in Turkish
Key exclusion criteria (7 listed)
- Individuals with a history of cervical surgery,
- neck trauma within the previous year,
- neurological or rheumatological disorders,
- cervical radiculopathy,
- inability to discontinue analgesic medication within 48 hours prior to assessment,
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
neck disability
Time frame: Primary outcome (NDI) was measured once at baseline during the cross-sectional assessment.
Neck disability was evaluated by The Neck Disability Index (NDI) total score The NDI consists of 10 questions in total, and each question evaluates a different area of daily life. Each question is scored between 0 and 5 points: 0 = no problem at all, 5 = maximum limitation. The total score range can be: Minimum: 0 and Maximum: 50.
1 secondary outcome
Sleep quality
Time frame: at baseline
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 3 Mar 2026.
- Individual participant dataSharing planned: Yes. The datasets generated and/or analyzed during the current study are available from the corresponding author upon reasonable request. But we can share IPD after publication of our article.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Neck Disability and Temporomandibular Disorders (TMD), run by Istanbul Medipol University Hospital at 1 site in Turkey (Türkiye).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 3 Mar 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
neck disability (time frame: Primary outcome (NDI) was measured once at baseline during the cross-sectional assessment.). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 3 Mar 2026.