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

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

Status

Not yet recruiting

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT07510503

Enrollment

Registered

2026-04-03

Start date

2026-03-14

Completion date

2026-04-30

Last updated

2026-04-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Spine

Keywords

spine, inclinometer, smartphone

Brief summary

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.

Interventions

None listed

Study design

Observational model

COHORT

Time perspective

CROSS_SECTIONAL

Eligibility

Sex/Gender

ALL

Age

18 Years to 25 Years

Healthy volunteers

Yes

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.

Design outcomes

Primary

Measure	Time frame	Description
Assessment of Spinal Curvature	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).

Outcome results