THE USE OF TWO DIFFERENT SMARTPHONE APPLICATIONS IN MEASURING SAGITTAL SPINAL CURVATURE

This study will include healthy volunteers aged 18-25 years. Demographic information will be recorded, and an experienced physiotherapist will mark five reference points on the spine of the participants, starting from the cervical spine and extending to the lumbar spine. Angle measurements will then be taken from these five reference points using a gravity inclinometer, an Android smartphone, and an iOS phone. Measurements will be repeated twice on the same day and twice again 24-48 hours later using three different devices. The accuracy and similarity of the measurements taken with these three devices will then be compared.

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Key information

Conditions

Spine

Age range

18 year–25 year

Sex eligibility

All sexes

Study type

Observational

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Being over 18 years of age,
being able to stand and walk without an assistive device,
not having experienced back pain or lower extremity pain in the last 6 months,
and being willing to participate in the study.

Exclusion criteria

Lack of consent,
lower extremity injuries (dislocation, sprain) within one month prior to measurement,
lower extremity fractures within the last 6 months,
tactile sensitivity that prevents the adoption of a free and habitual posture.

Treatment and study plan

Primary outcomes

Assessment of Spinal Curvature

Time frame: Two measurements taken 10 minutes apart.

Description: The following 5 parameters were used for the measurement: 1. ALPHA 1 angle of sacrum (upper beam of the inclinometer, in the middle of the intervertebral space, on the line connecting the posterior superior iliac crests). 2. ALPHA 2 angle - sacrolumbar junction S/L (center of the inclinometer on the line connecting the posterior superior iliac crests). 3. BETA angle - Th12-L1 thoracolumbar junction (center of the inclinometer at the thoracolumbar junction). 4. GAMMA angle - C7-Th1 (center of the inclinometer on C7). 5. DELTA angle - Th3-Th4 (upper beam of the inclinometer at the height of the upper angle of the scapula).

Sponsors and collaborators

Lead sponsor

Ahi Evran University Education and Research Hospital

Other

Registry information

Official study title

AN INVESTIGATION OF THE INTRA- AND INTER-RATER RELIABILITY OF TWO DIFFERENT SMARTPHONE APPLICATIONS USED IN THE MEASUREMENT OF SAGITTAL SPINAL CURVATURE

Important dates

Study start: 2026
Primary completion: 2026
Study completion: 2026
First posted: Apr 3, 2026
Registry last updated: Apr 8, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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