Pelvic Parameters in Males With and Without Ankle Instability

May 14, 2026 updated by: Ahmed Korany Abdallah Ahmed

Pelvic Parameters in Male Athletes With and Without Chronic Ankle Instability: A Cross Sectional Study

This study aims to investigate the relationship between pelvic alignment and ankle stability in male athletes with and without a history of ankle sprain.

Chronic ankle instability is a common condition that may affect not only the ankle joint but also the alignment and function of other body segments, including the pelvis. Understanding this relationship may help improve injury prevention and rehabilitation strategies.

Participants will undergo clinical assessments, functional tests, and radiographic evaluation of pelvic parameters to compare findings between injured and non-injured groups.

The objective of this study is to determine whether differences in pelvic sagittal parameters are associated with ankle instability in male athletes.

Study Overview

Status

Not yet recruiting

Conditions

Detailed Description

This cross-sectional case-control study aims to investigate the relationship between chronic ankle instability and pelvic sagittal alignment in male athletes. Chronic ankle instability may lead to alterations in lower limb biomechanics, postural control, and proximal body alignment, including pelvic positioning.

Participants will be divided into two groups: athletes with chronic ankle instability and healthy athletes without a history of ankle instability. All participants will undergo clinical evaluation, functional assessment, and radiographic measurement of pelvic sagittal parameters.

Clinical assessment will include evaluation of ankle instability severity, pain intensity, and dynamic balance performance using validated assessment tools. Pelvic alignment parameters will be assessed radiographically to identify potential biomechanical differences between groups.

The findings of this study may contribute to a better understanding of the relationship between chronic ankle instability and proximal biomechanical adaptations, which may improve rehabilitation and injury prevention strategies in athletes.

Study Type

Observational

Enrollment (Estimated)

38

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

The study will include male competitive football players aged 18 to 35 years. Cases will be defined as players with chronic ankle instability following a history of lateral ankle sprain, while controls will be healthy players without a history of ankle sprain or chronic ankle instability. Participants will be recruited from sports clubs and physiotherapy outpatient departments.

Description

Inclusion Criteria:

  • Male football players aged between 18 and 35 years (Herzog et al., 2019; Jiang et al., 2022).
  • A documented history of lateral ankle sprain (LAS) for at least 12 months before the study, with the initial injury resulting in a minimum of one day of weight-bearing restriction.
  • Self-reported episodes of ankle "giving way" occurring at least twice within the 6-12 months preceding enrollment.
  • The most recent injury must have occurred more than 3 months before study enrollment.
  • A perceived sense of the injured ankle being chronically weaker and/or less functional than the contralateral side before the first LAS episode.
  • A Cumberland Ankle Instability Tool (CAIT) score of less than 24 indicates chronic ankle instability.
  • For group B: participants with no previous history of ankle sprain.

Exclusion Criteria:

  • Bilateral LAS (Tahoon et al., 2022).
  • Previous injury, fracture, or surgical intervention involving the spine, pelvis, or lower extremity.
  • History of low back pain requiring medical or surgical intervention.
  • Engagement in supervised or unsupervised ankle rehabilitation within one month before the study.
  • Any LAS occurring within three months before participation.
  • Leg length discrepancy exceeding 0.5 cm.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Group A: Male athletes with a history of ankle sprain and chronic ankle instability.

Group A

Male Athletes With Chronic Ankle Instability

Male competitive football players aged 18 to 35 years with a history of unilateral lateral ankle sprain and symptoms consistent with chronic ankle instability. Participants in this group will report recurrent episodes of ankle "giving way," perceived ankle weakness and/or reduced ankle function, and a Cumberland Ankle Instability Tool (CAIT) score of less than 24. The most recent ankle sprain must have occurred more than 3 months before enrollment.
Group B: Male athletes without a history of ankle sprain or chronic ankle instability.

Group B

Healthy Male Athletes

Male competitive football players aged 18 to 35 years with no previous history of lateral ankle sprain, chronic ankle instability, or lower limb musculoskeletal injury within the previous 12 months. Participants in this group will be matched to the chronic ankle instability group according to age, playing level, and training exposure.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Ankle instability
Time Frame: Baseline assessment
Ankle instability assessed using the Anterior Drawer Test
Baseline assessment
Chronic ankle instability
Time Frame: Baseline assessment
Chronic ankle instability severity assessed using the Cumberland Ankle Instability Tool (CAIT)
Baseline assessment
Dynamic balance
Time Frame: Baseline assessment
Dynamic balance performance assessed using the Y Balance Test
Baseline assessment
Pelvic incidence
Time Frame: Baseline assessment
Pelvic incidence measured using standing lateral pelvic radiographs
Baseline assessment
Pelvic tilt
Time Frame: Baseline assessment
Pelvic tilt measured using standing lateral pelvic radiographs
Baseline assessment
Sacral slope
Time Frame: Baseline assessment
Sacral slope measured using standing lateral pelvic radiographs
Baseline assessment

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Ahmed Korany Abdallah Ahmed

Investigators

  • Study Director: maha mostafa alibeiny, phd, Cairo University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

May 7, 2026

Primary Completion (Estimated)

June 7, 2026

Study Completion (Estimated)

July 7, 2026

Study Registration Dates

First Submitted

May 4, 2026

First Submitted That Met QC Criteria

May 14, 2026

First Posted (Actual)

May 18, 2026

Study Record Updates

Last Update Posted (Actual)

May 18, 2026

Last Update Submitted That Met QC Criteria

May 14, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Chronic ankle instability

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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