Gregor V. R. von Ehrlich-Treuenstätt

Knappschaftsklinikum Saar

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Matthias K. Jung

Klinikum Ludwigshafen

Paul Alfred Grützner

Heidelberg University

Michael Kreinest

Klinikum Ludwigshafen

Holger Keil

Friedrich-Alexander-Universität Erlangen-Nürnberg

Niko R. E. Schneider

University of Southampton

Lukas Bisorca‐Gassendorf

Augenklinik Heidelberg

Annekatrin Rickmann

Knappschaftsklinikum Saar

Davut D. Uzun

Heidelberg University

Kai Januschowski

Knappschaftsklinikum Saar

Philip Wakili

Knappschaftsklinikum Saar

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Heidelberg University

Knappschaftsklinikum Saar

Klinikum Ludwigshafen

Ludwigshafen University of Business and Society

University Hospital Heidelberg

STZ eyetrial

Ophthalmology Clinic

University of Basel

Berufsgenossenschaftliche Unfallklinik Ludwigshafen

Augenklinik Heidelberg

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Evaluation of external stabilization of type II odontoid fractures in geriatric patients—An experimental study on a newly developed cadaveric trauma model

PLoS ONE (2021)

Matthias K. Jung Gregor V. R. von Ehrlich-Treuenstätt Andreas L. Jung Holger Keil Paul Alfred Grützner

Along with the growing geriatric population, the number of odontoid fractures is steadily increasing. However, the effectiveness of immobilizing geriatric odontoid fractures using a cervical collar has been questioned. The aim of the present study is to analyze the physiological and pathological motion in odontoid fractures and to assess limitation of motion in the cervical spine when applying a cervical collar.Motion analysis was performed with wireless motion tracker on unfixed geriatric human cadavers. First, a new geriatric type II odontoid fracture model was developed. In this model, the type II odontoid fracture is operated via a transoral approach. The physiological and pathological flexion and lateral bending of the cervical spine resulting from this procedure was measured. The resulting motion after external stabilization using a cervical collar was analyzed.The new geriatric type II odontoid fracture model was successfully established using seven unfixed human cadavers. The pathological flexion of the cervical spine was significantly increased compared to the physiological flexion (p = 0.027). Furthermore, the flexion was significantly reduced when a cervical collar was applied. In case of flexion the mean remaining motion was significantly reduced (p = 0.0017) from 41° to 14°. For lateral bending the mean remaining motion was significantly reduced (p = 0.0137) from 48° to 18°.In case of type II odontoid fracture, flexion and lateral bending of the cervical spine are increased due to spinal instability. Thus, if an odontoid fracture is suspected in geriatric patients, the application of a cervical collar should always be considered since external stabilization can significantly reduce flexion and lateral bending.

Cervical collar

Cadaveric spasm

10.1371/journal.pone.0260414

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Citations (2)

Die Lagerung des Kopfes während der Behandlung im Schockraum – eine explorative Analyse über die Immobilisation der Halswirbelsäule

Der Anaesthesist (2021)

Matthias K. Jung Davut D. Uzun Gregor V. R. von Ehrlich-Treuenstätt Paul Alfred Grützner Michael Kreinest

Supine position

Cervical collar

10.1007/s00101-021-00965-0

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Analysis of remaining motion using one innovative upper airway opening cervical collar and two traditional cervical collars

Scientific Reports (2021)

Matthias K. Jung Gregor V. R. von Ehrlich-Treuenstätt Holger Keil Paul Alfred Grützner Niko R. E. Schneider

The aim of this study was to compare the remaining motion of an immobilized cervical spine using an innovative cervical collar as well as two traditional cervical collars. The study was performed on eight fresh human cadavers. The cervical spine was immobilized with one innovative (Lubo Airway Collar) and two traditional cervical collars (Stifneck and Perfit ACE). The flexion and lateral bending of the cervical spine were measured using a wireless motion tracker (Xsens). With the Weinman Lubo Airway Collar attached, the mean remaining flexion was 20.0 ± 9.0°. The mean remaining flexion was lowest with the Laerdal Stifneck (13.1 ± 6.6°) or Ambu Perfit ACE (10.8 ± 5.8°) applied. Compared to that of the innovative Weinmann Lubo Airway Collar, the remaining cervical spine flexion was significantly decreased with the Ambu Perfit ACE. There was no significant difference in lateral bending between the three examined collars. The most effective immobilization of the cervical spine was achieved when traditional cervical collars were implemented. However, all tested cervical collars showed remaining motion of the cervical spine. Thus, alternative immobilization techniques should be considered.

Cervical collar

Collar

10.1038/s41598-021-00194-w

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Clinical Experience of Two Sutureless Intrascleral Fixation Techniques for Secondary Intraocular Lens Implantation

Ophthalmologica (2023)

Kai Januschowski Annekatrin Rickmann Karl Boden Gregor V. R. von Ehrlich-Treuenstätt Philip Wakili

Introduction: The aim of this study was to evaluate the outcome of the modified Carlevale intraocular lens (IOL) fixation technique, using two different vitrectomy ports (23- vs. 27-gauge) as anchor fixation. Methods: Retrospective, consecutive study of 282 eyes (282 patients) who underwent a secondary IOL implantation using the Carlevale IOL (Soleko IOL Division, Italy) with two anchor haptics for intrascleral implantation with either 23- or 27-gauge (G) port. Results: Transient post-operative ocular hypotonia (intraocular pressure ≤5 mm Hg) was observed less in the 27-G group (13 vs. 4 patients, p = 0.057) three requiring additional tunnel sutures (2 cases for 23-G; 1 case 27-G). Post-operative vitreous haemorrhage was recorded more often in the 23-G group (8 vs. 1 patient, p = 0.034), but all cases in both groups resolved without intervention. Visual acuity did improve post-operatively in the two groups. No post-operative complications such as retinal detachment, endophthalmitis, and IOL-dislocation tilt were observed in the follow-up. Conclusion: The 27-G modified technique for sutureless intrascleral implantation is simple and effective and causes less post-operative hypotony.

10.1159/000532065

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