Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca

Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca

Původní práce / Original papers

ACTA CHIRURGIAE ORTHOPAEDICAE ET TRAUMATOLOGIAE ČECHOSL.,
86, 2019, p. 72 - 76

Rekonstrukce izolovaných zlomenin spodiny očnice nazoseptální chrupavkou

Reconstruction of Isolated Orbital Floor Fractures by Nasoseptal Cartilage

B. GÁL1, J. HLOŽEK1, T. HLOŽKOVÁ1, D. SLOUKA2, R. KOSTŘICA1
1 Klinika otorinolaryngologie a chirurgie hlavy a krku, Fakultní nemocnice u sv. Anny v Brně a Lékařské fakulty Masarykovy univerzity Brno
2 Otorhinolaryngologická klinika, Fakultní nemocnice Plzeň a Lékařské fakulty Univerzity Karlovy, Plzeň

ABSTRACT

PURPOSE OF THE STUDY

The incidence of isolated orbital floor fractures has an increasing tendency. Their optimal management is not uniform and is still being discussed in the literature. The therapeutic decision as to whether surgical intervention is necessary or conservative approach is adequate vitally depends on clinical and CT findings. Incorrect treatment can lead to serious consequences, especially to persistent diplopia and enophthalmos. The objective of our study was to evaluate the radiological indication criteria for surgery and the clinical outcomes thereafter.

MATERIAL AND METHODS

The retrospective monocentric study of the group of 53 patients who underwent the isolated orbital floor fracture reconstruction during the period from 1/1/2006 to 31/12/2016 at the Clinic of Otolaryngology and Head and Neck Surgery of the St. Anne´s University Hospital, Brno. The ealuated parameters wee the following: trauma cause, clinical symptoms, evaluation of CT parameters (MH index, RF index, MRI index), time interval from injury to surgery, complications

.

RESULTS

Trauma cause: an assault 30/53 (57%), a fall 14/53 (26%), sports 4/53 (7%), a  road traffic accident 4/53 (7%), an accident at work 1/53 (2%). Clinical symptoms: eyelid haematoma and/or swelling 53/53 (100%), diplopia 29/53 (55%), emphysema 29/53 (55%), infraorbital nerve hypoesthesia 4/53 (7%). Radiological report of the CT: RF index > 50% (defect length more than a half of the orbital floor length) 49/53 (92%), RF index <50% (defect length less than a  half of the orbital floor length) 4/53 (7%). MH index (maximum height of periorbital herniation): mean value 9.0 mm (2.8 - 14.2 mm), MRI index (rectus inferior muscle index): <1.5 15/53 (28%), > 1.5 38/53 (72%). Time interval from injury to surgery: mean value 11 days (3-21 days). Complications 6 weeks postoperatively: diplopia 4/53 (7%), ectropion 2/53 (4%), enophtalmos 0/53 (0%) , visual damage 0/53 (0%).

CONCLUSIONS

The choice between the surgical and conservative management of the isolated orbital fracture is the key factor to ensure a good therapeutic result. The evaluation of CT findings is crucial for the decision-making process. The key radiological parameters are the standardized assessment of the orbital floor defect size (RF index), orbital tissue herniation (MH index) and the assessment of damage to the intraorbital muscles (MRI index). As demonstrated by the results of our analysis, surgical reconstruction of the orbital floor by nasoseptal cartilage represents a highly effective and safe method.

Key words: orbital fractures, blow-out fracture, orbital floor, orbital reconstruction

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