Evaluation of the teleradiographic lateral image for diagnosis and indication of conversion osteotomies in obstructive sleep apnea syndrome (OSAS).

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00028064

Enrollment

200

Registered

2022-02-25

Start date

2022-03-01

Completion date

Unknown

Last updated

2025-04-07

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

Conditions

G47.31

Interventions

Group 1: Observational study, retrospective evaluation of pre-existing radiographs.

Eligibility

Sex/Gender

All

Age

18 Years to 100 Years

Inclusion criteria

Inclusion criteria: - All genders will be included - Inclusion criterion: female and male patients over 18 years of age. - Inclusion criterion: female and male patients with two Lateral cephalometric radiographs within the defined period of 1/1/2013 - 01/01/2022.

Exclusion criteria

Exclusion criteria: - Exclusion criterion: Patients who had an operation affecting the posterior airway space between recordings. - Exclusion criterion: images taken up to three days after pharyngeal surgeries are excluded.

Design outcomes

Primary

Measure	Time frame
Non-standard body position during FRS imaging influences posterior airway space and thus the indication for conversion osteotomy in obstructive sleep apnea syndrome (OSAS). In the same patients, due to a missing standard, different posterior airway spaces are measured depending on the (random) body position in the radiograph.	—

Secondary

Measure	Time frame
200-300 patient cases from retrospective evaluation meeting inclusion criteria.	—

Countries

Germany

Contacts

Public ContactSteffen J. Schwarz

Universitätsklinikum FreiburgKlinik für Mund-Kiefer-Gesichtschirurgie

steffen.schwarz@uniklinik-freiburg.de0761-270 47010

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026