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Intercostal retractions occur when the muscles between the ribs pull inward. The movement is most often a sign that the person has a breathing problem. Intercostal retractions are a medical emergency.
As a consequence, there is increased negative pressure that causes maxillary sinus atelectasis (). Stenosis of the ostiomeatal complex can also occur from altered anatomy in the absence of accumulated secretions in the sinus, as demonstrated in our Case 2.The resulting presentation is a slow progressive enophthalmos and hypoglobus due to retraction of the orbital floor ().n the first patient, surgery addressing the blockage of the ostiomeatal complex arrested the enophthalmos; in the second patient, it reversed the enophthalmos. Â© 2008 Lippincott Williams & Wilkins, Inc. The most common form of enophthalmos after orbital trauma is seen in large orbital floor (blowout) fractures ().