ClinicalTrials.gg
Enrolling by invitationNCT07159867Updated Aug 25, 2026

Frequency of Hypermobility-Related Problems in Patients With Anorexia Nervosa

An observational study in Anorexia Nervosa, Atypical and Anorexia Nervosa, sponsored by Vastra Gotaland Region. Enrolling by invitation at 1 site in Sweden. Open to female participants aged 13 Years to 25 Years. Per ClinicalTrials.gov, last updated 2026-08-25.

Sponsored by Vastra Gotaland Region · Observational

Study type
Observational
Model
Cohort
Time perspective
Cross-sectional
Enrollment
100
Ages
13 Years to 25 Years
Sex
Female
01

Study summary

The purpose of this study is to examine the frequense of generalized hypermobility and pain in patients with Anorexia Nervosa. The study further explores two main questions: (1) whether generalized hypermobility may be an explanatory factor for pain in some patients with Anorexia Nervosa, and (2) whether temporomandibular joint problems (such as instability, pain, difficulties opening the mouth, locking, or clicking) contribute to eating difficulties in certain individuals with Anorexia Nervosa.

Read the detailed description

Patients with eating disorder diagnosis Anorexia Nervosa, who are either currently in treatment or awaiting treatment at the Eating Disorders Center for children and young adults in Gothenburg, will be invited to participate in the study. During a single examination session, the patient's joints will be assessed to determine whether generalized hypermobility is present. At the same visit, the patient will answer questions regarding possible bodily pain and any temporomandibular joint problems. Joint mobility will be examined and assessed by a physiotherapist at the clinic. The examination follows a standardized protocol for assessing joint mobility and includes the assessment of nine specified joints.

02

Conditions studied

  • Anorexia Nervosa, Atypical
  • Anorexia Nervosa

Keywords

  • Anorexia nervosa
  • Joint hypermobility
  • Pain
  • Temporomandibular joint
03

In context

Anorexia Nervosa

469 studies on the registry are indexed under Anorexia Nervosa; 127 are open to participants now.

This study's planned enrollment of 100 is above the median of 78 across 142 observational studies indexed under Anorexia Nervosa.

Browse Anorexia Nervosa studies →

Lead sponsor

Vastra Gotaland Region is the lead sponsor of 275 studies on the registry; 109 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
13 Years to 25 Years
Sexes eligible
Female
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Patients at the Eating Disorders Center for Children and Young Adults in Gothenburg.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

Female patients Aged 13-25 years

Diagnosed with:

  • Anorexia Nervosa (ICD-10 F50.0), or
  • Atypical Anorexia Nervosa (ICD-10 F50.1)
  • Currently receiving treatment or scheduled to receive treatment

Exclusion criteria

Exclusion Criteria:

  • Severe cognitive impairment
  • Insufficient Swedish language skills that make it impossible to provide and prevent answering study questions
  • Pregnancy and up to one year postpartum
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Observational model
Cohort
Time perspective
Cross-sectional
Enrollment
100 participants (estimated)
Patient registry
No

Groups and cohorts

  • Female patients diagnosed with Anorexia Nervosa or Atypical Anorexia Nervosa, aged 13-25 years.
06

What researchers measure

Primary outcomes

  1. Joint hypermobility

    Joint mobility will be assessed according to the Beighton score using a goniometer.

    Time frame: One-time assessment at baseline (Day 0, at the inclusion visit).

  2. 5-part questionnaire

    Participants over the age of 18 will also complete the 5-part questionnaire regarding historical hypermobility.

    Time frame: One-time questionnaire at baseline (Day 0, after clinical examination).

Secondary outcomes

  1. Joint pain

    The Numeric Rating Scale (NRS) is a self-assessment tool used to describe the patient's perceived pain intensity. The patient marks the intensity on a line with eleven points, ranging from 0 to 10. The endpoints represent 0 = 'no pain' and 10 = 'worst imaginable pain.'

    Time frame: One-time questionnaire at baseline (Day 0, after clinical examination).

  2. Temporomandibular joint problems

    Screening questions regarding temporomandibular joint problems. The short version of the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD) classification system will be used.

    Time frame: One-time questionnaire at baseline (Day 0, after clinical examination).

  3. Pain drawing

    Participant marks areas of perceived pain on a schematic human body figure.

    Time frame: One-time questionnaire at baseline (Day 0, after clinical examination).

07

Study locations

1 site
  • Queen Silvias Children´s Hospital
    Gothenburg, Västra Götaland County 416 50, Sweden
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 25, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT07159867
Responsible party
Elke Schubert Hjalmarsson (Dr, Vastra Gotaland Region) — Principal investigator
First posted
Sep 8, 2025
Start date
Sep 15, 2025
Primary completion
Dec 30, 2026 (estimated)
Completion
Dec 30, 2026 (estimated)
Last update
Aug 25, 2026

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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