Tibialis Posterior Muscle Morphology in Flexible Flatfeet Subjects
ConditionFlexible Flatfoot
Trial statusNot yet recruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age18-40
SponsorCairo University
About this trial
The goal of this observational study is to assess tibialis posterior muscle morphology in adults with flexible flatfeet. The main question it aims to answer is:
Are there differences in tibialis posterior muscle morphology between adults with symptomatic flexible flatfeet, asymptomatic flexible flatfeet, and individuals with normal foot posture?
Participants will undergo clinical assessment of foot posture and symptoms and an ultrasound assessment of the tibialis posterior muscle. The study will compare muscle thickness, cross-sectional area, and echo intensity among the three groups.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Adults aged 18 to 40 years.
Both males and females will be eligible to participate.
Body mass index (BMI) ≤30 kg/m².
Participants with flexible flatfoot will demonstrate a visible medial longitudinal arch in the non-weight-bearing position and flattening of the arch during full weight-bearing.
Disqualifiers
History of previous surgery involving the foot, ankle, or lower limb.
History of significant trauma or fracture involving the foot, ankle, or lower limb.
Presence of rigid flatfoot or other structural foot deformities.
Presence of neurological disorders affecting the lower limb.
Trial population
Participants will be recruited from individuals attending the outpatient clinics of the Faculty of Physical Therapy, Cairo University, and New Cairo Hospital. The study population will include individuals presenting with different foot postures, including those with flexible flatfoot and individuals with normal foot posture. Eligible participants who meet the study criteria and provide informed consent will be enrolled in the study.
Trial design
Design model
Other
Time perspective
Cross-sectional
Treatments tested in this trial
Tibialis Posterior Muscle Morphology Assessment
Other interventionAssessment of tibialis posterior muscle morphology using B-mode diagnostic ultrasound as a non-invasive measurement method. The assessment is performed for research purposes and does not involve administration of treatment or modification of participants' usual care.
Treatment groups
45 Participants
are divided into 3 treatment groupsGroup A: Symptomatic Flexible Flatfoot1 intervention
Group B: Asymptomatic Flexible Flatfoot1 intervention
Group C: Normal Foot Posture (Control)1 intervention
Trial outcomes
Primary outcomes
1
Tibialis Posterior Muscle Thickness
Tibialis posterior muscle thickness will be assessed using B-mode diagnostic ultrasonography with a high-frequency linear transducer. The ultrasound measurement site will be standardized at 30% of the shank length according to the predefined study protocol. Minimal transducer pressure will be applied to avoid muscle compression. Multiple images will be obtained, and the mean measurement will be used for statistical analysis.
Time frame
Baseline assessment during a single study visit.2
Tibialis Posterior Muscle Cross-sectional Area
Tibialis posterior muscle cross-sectional area will be assessed using B-mode diagnostic ultrasonography with a high-frequency linear transducer. The ultrasound measurement site will be standardized at 30% of the shank length according to the predefined study protocol. Minimal transducer pressure will be applied to avoid muscle compression. Multiple images will be obtained, and the mean cross-sectional area measurement will be used for statistical analysis.
Time frame
Baseline assessment during a single study visit.Secondary outcomes
1
Tibialis Posterior Muscle Stiffness
Tibialis posterior muscle stiffness will be assessed using shear wave elastography (SWE) with an ultrasound system equipped with a high-frequency linear transducer. The ultrasound measurement site will be standardized at 30% of the shank length according to the predefined study protocol. Minimal transducer pressure will be applied to avoid muscle deformation. Multiple measurements will be obtained, and the mean stiffness value will be used for statistical analysis.
Time frame
Baseline assessment during a single study visit.2
Foot Posture Index-6 (FPI-6)
Foot posture will be assessed using the Foot Posture Index-6 (FPI-6) during relaxed standing. The FPI-6 consists of six observational and palpation-based items used to assess foot posture, with each item scored from -2 to +2. The total score ranges from -12 to +12, with higher scores indicating a more pronated foot posture.
Time frame
Baseline assessment during a single study visit.3
Pain intensity level
Pain intensity will be assessed using the Arabic version of the Numeric Pain Rating Scale (Arabic NPRS). Participants will rate their foot-related pain on a numerical scale from 0 to 10, where 0 indicates no pain and 10 indicates the worst pain imaginable. The Arabic NPRS will be administered according to its validated Arabic version.
Time frame
Baseline assessment during a single study visit.Sponsors and contacts
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Source ClinicalTrials.gov
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