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This study aims to investigate the short-term modifications in head and neck positioning by usage of low-powered prismatic lenses in patients with Postural Deficiency Syndrome (PDS). A matched pair observation study was designed. Evaluation is carried out using low dose biplanar radiography before treatment and 15 minutes after lenses application.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Unique | Experimental |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Prismatic low-powered lenses | Device | Participants perform biplanar X-ray before and after lens application |
|
| Measure | Description | Time Frame |
|---|---|---|
| Radiographic modification of pelvic tilt angle | Changes in pelvic tilt angle are measured between two subsequent radiographic biplanar scans in standing position, before and after lenses application on the same patient. Measurement is performed in degrees using the radiographic equipment proprietary software (EOS imaging). A minimum clinical significance value of 3 degrees was estimated. | From enrollment to second radiographic evaluation on day 1 |
| Radiographic modification of C0 inclination | Changes in C0 inclination angle are measured between two subsequent radiographic biplanar scans in standing position, before and after lenses application on the same patient. Measurement is performed in degrees using the radiographic equipment proprietary software (EOS imaging). A minimum clinical significance value of 3 degrees was estimated. | From enrollment to second radiographic evaluation at day 1 |
| Radiographic modification of cervical spinal vertical alignment | Changes of cervical spinal vertical alignment are measured between two subsequent radiographic biplanar scans in standing position, before and after lenses application on the same patient. Measurement is performed in millimeters using the radiographic equipment proprietary software (EOS imaging). A minimum clinical significance value of 2 millimeters was estimated. | From enrollment to second radiographic evaluation at day 1 |
| Measure | Description | Time Frame |
|---|---|---|
| Radiographic modification of cervical lordosis | Changes of cervical lordosis angle are measured between two subsequent radiographic biplanar scans in standing position, before and after lenses application on the same patient. Measurement is performed in degrees using the radiographic equipment proprietary software (EOS imaging). | From enrollment to second radiographic evaluation at day 1 |
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Inclusion Criteria:
Presentation of diagnostic criteria for Postural Deficiency Syndrome comprising of
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| João Alves da Silva, MD | Contact | +351935457064 | joao-luis@edu.ulisboa.pt |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| CAML | Recruiting | Lisbon | Lisbon District | Portugal |
All measurements performed from imaging studies
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| Prot_SAP | Yes | Yes | No | Study Protocol and Statistical Analysis Plan | Nov 22, 2025 |
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| Radiographic modification of inclination of C1 | Changes of C1 inclination angle are measured between two subsequent radiographic biplanar scans in standing position, before and after lenses application on the same patient. Measurement is performed in degrees using the radiographic equipment proprietary software (EOS imaging). | From enrollment to second radiographic evaluation at day 1 |
| Radiographic modification of inclination of C2 | Changes of C2 inclination angle are measured between two subsequent radiographic biplanar scans in standing position, before and after lenses application on the same patient. Measurement is performed in degrees using the radiographic equipment proprietary software (EOS imaging). | From enrollment to second radiographic evaluation at day 1 |
| Radiographic modification of global spinal vertical alignment | Changes of global spinal vertical alignment are measured between two subsequent radiographic biplanar scans in standing position, before and after lenses application on the same patient. Measurement is performed in millimeters using the radiographic equipment proprietary software (EOS imaging). | From enrollment to second radiographic evaluation at day 1 |
| Apr 6, 2026 |
| Prot_SAP_000.pdf |