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Evaluation of the recovery after M. zygomaticus denervation

Evaluation of the recovery after M. zygomaticus denervation

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
DRKS
Registry ID
DRKS00015019
Enrollment
270
Registered
2018-07-31
Start date
2020-09-06
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

G51.0

Interventions

Group 1: Patients with surgical treatment Regularly scheduled evaluation of the health status of the denervated M. zygomaticus. After the baseline evaluation, further clinic visits are scheduled for 4

Sponsors

MED-EL Elektromedizinische Geräte GmbH
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: • Age = 18 years • Diagnosed denervation of one M. zygomaticus • Anatomic and physiological and mental conditions compatible with the participation in this clinical investigation • High motivation with realistic expectations regarding the participation in this clinical investigation • Signed and dated informed consent before the start of any clinical investigation specific assessment

Exclusion criteria

Exclusion criteria: • Lack of compliance with any inclusion criteria • Pregnant or breast-feeding women • Partial reinnervation of the M. zygomaticus • Other clinical diseases that might result in alteration of the outcomes of this clinical investigation (e.g. muscular and/or skin diseases, epilepsy) • Current participation in other drugs and/or medical device clinical investigations that can affect the results of the present clinical investigation • Anything that, in the opinion of the Principal Investigator, would place the subject at increased risk or preclude the subject's full compliance with the general requirements of this clinical investigation.

Design outcomes

Secondary

MeasureTime frame
• The duration of denervation • Age, gender, BMI and comorbidities of the patient • Differences in surgical treatments • Adjuvant pharmacological treatments

Primary

MeasureTime frame
Duration until recovery of the M. zygomaticus from the paralysis as measured by EMG. Type of Reinnervation of the M. zygomaticus measured by EMG combined with significant improvements of at least one of the following parameters • Increased M. zygomaticus size confirmed by ultrasound and if available MRI data • Improved facial symmetry • Improved score of the Facial Disability Index (FDI) questionnaire • Improved score Facial Clinimetric Evaluation (FaCE) questionnaire • Improved score of the Sunnybrook Facial Grading System All parameters will be evaluated at the baseline and 4, 6, 8, 12, 16 20 and 52 weeks after the baseline. In addition, FDI and FaCE will also be evaluated after 10 weeks.

Countries

Austria, Germany

Contacts

Public ContactGerd Fabian Volk

Klinik und Poliklinik für Hals-, Nasen- und OhrenheilkundeInstitut für Phoniatrie und Pädaudiologie Universitätsklinikum Jena

fabian.volk@med.uni-jena.de03641 9 329396

Outcome results

None listed

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