caa a22 4500 475848926 CHVBK 20180406123922.0 cr unu---uuuuu 170329e20000901xx s 000 0 eng 10.1007/s004050000264 doi (NATIONALLICENCE)springer-10.1007/s004050000264 Infraorbital nerve recovery after minimally dislocated facial fractures [Elektronische Daten] [J. Peltomaa, H. Rihkanen] There is evidence that rigid fixation of zygomaticomaxillary suture enhances the recovery of the infraorbital nerve compared with other means of surgical treatments. There is, however, no agreement as to whether any surgery decreases the number of sensory disturbance in cases with little or no dislocation, or whether infraorbital numbness alone should be considered an indication for surgery. An operation may even increase the edema and hemorrhage around the nerve. This retrospective study was carried out among patients with infraorbital hypesthesia but little or not at all dislocated midfacial fractures. Two special types of trauma patients were selected; those with a blow-out fracture but an intact infraorbital rim (BO) and those with a zygomaticomaxillary complex fracture (ZMC). A questionnaire was sent to the patients (n = 226) 2.2 years (mean) after the accident. There were 128 responses (BO n = 41, ZMC n = 87). Of these, 27 BO and 29 ZMC patients had been treated by observation. An orbital exploration had been carried out in 14 BO patients, and 58 ZMC patients had received malar bone elevation without rigid fixation. At the end of the follow-up period nontreated patients had fewer symptoms than those who had had surgery. This was clearer in the ZCM group (symptom free 69% vs. 52%) than in the BO group (69% vs. 50%). The differences between surgically and nontreated BO or ZMC patients, however, were statistically nonsignificant. According to our findings, exploration of the orbital floor or an attempted elevation of a minimally or nondislocated fracture of the ZMC does not enhance the recovery of the infraorbital nerve. On the contrary, the procedure may itself increase the morbidity and sensory dysfunction. Further studies are needed to determine whether the results could be improved by selective decompression of the infraorbital nerve and a rigid fixation. Springer-Verlag Berlin Heidelberg, 2000 Key words Infraorbital nerve nationallicence Sensory disturbance nationallicence Orbital fracture nationallicence Peltomaa J. Department of Otolaryngology, Head, and Neck Surgery, Helsinki University Hospital, Helsinki, Finland, FI aut Rihkanen H. Department of Otolaryngology, and Head and Neck Surgery, Jorvi Hospital, Turuntie 150, 02740 Espoo, Finland Fax: +358-861-5906 e-mail: heikki.rihkanen@jorvi.ushp.fi, FI aut https://doi.org/10.1007/s004050000264 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s004050000264 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Peltomaa J. Department of Otolaryngology, Head, and Neck Surgery, Helsinki University Hospital, Helsinki, Finland, FI aut NATIONALLICENCE 700 1- Rihkanen H. Department of Otolaryngology, and Head and Neck Surgery, Jorvi Hospital, Turuntie 150, 02740 Espoo, Finland Fax: +358-861-5906 e-mail: heikki.rihkanen@jorvi.ushp.fi, FI aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer