Does initial reduction at infra-orbital rim first improve malar height and vertical dystopia in ZMC fractures?

Rupshikha Choudhury, Sanjay Rastogi, Dharmendra Kumar, Shanthi Prasad Indra, Ankur Joshi, Shreya Jawalkar
Oral and Maxillofacial Surgery 2020 September 10

PURPOSE: To estimate the clinical and functional results of patients who underwent distinctive types of open reduction and internal fixation of ZMC fractures, with particular emphasis on malar height and vertical dystopia.

MATERIALS AND METHODS: A randomized clinical trial was conducted from August 2016 to October 2019 in which 40 adult patients with ZMC fractures of maxillofacial region were included. Patients were randomly allocated to group A (n = 20; frontozygomatic (F-Z) first 3-point reduction and fixation) or group B (n = 20; group B infra-orbital first 3-point reduction and fixation). All patients were evaluated objectively for malar height and vertical dystopia pre- and post-operatively at 3 months. The data were scrutinized by applying mean and standard deviation and unpaired t test.

RESULTS: Mean values of the malar height and vertical dystopia were statistically significant (P < .05) for group B compared with group A at all intervals. Data analyzed for other secondary variables showed a statistically non-significant difference between the groups (P > 0.05).

CONCLUSION: The results showed improvement in the malar height and vertical dystopia for infra-orbital first three-point fixation (group B) compared with F-Z first approach for initial reduction and fixation (group A). Furthermore, group B was better in terms of malar width and antero-posterior projection of the zygomaticomaxillary complex.

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