Missed orbital wall blow-out fracture as a cause of post-enucleation socket syndrome.
BACKGROUND: Post-enucleation socket syndrome (PESS: deep upper lid sulcus, ptosis or upper lid retraction, enophthalmos and lower lid laxity) is a well-recognised complication of a volume-deficient anophthalmic socket. A patient requiring enucleation following severe ocular trauma may have an underlying orbital wall blow-out fracture which if overlooked can cause severe volume deficit with poor cosmesis and limited prosthesis motility. PURPOSE: To establish the prevalence of an undiagnosed blow-out fracture in patients with PESS and a history of relevant trauma. METHODS: Medical records and orbital computed tomography (CT) scans were reviewed for all patients presenting with PESS and a history of relevant trauma. RESULTS: Undiagnosed blow-out fractures were found in 15 (33%) of 45 patients presenting between August 1993 and December 1996. These were significant enough to warrant surgical repair in 13 (29%) patients. CONCLUSIONS: We suggest that any patient presenting with PESS and a history of relevant trauma should be considered to have an orbital wall blow-out fracture until proven otherwise by CT scanning of the orbit. Similarly any patient requiring enucleation following severe ocular trauma should undergo CT scanning to rule out a coexisting blow-out fracture which could be repaired at the time of enucleation.