Abstract
Background
Optimal repair of orbital fractures
requires adequate exposure of the fracture area. The transconjunctival
approach with lateral canthotomy has gained
increasing popularity. This technique offers arguably improved visualization with
lower risk of lid retraction. However, if the lateral canthotomy
area is improperly repaired, it may cause lower lid malposition and deformity.1The
authors report the use of a modified transconjunctival
incision method with a lateral peri-canthal incision
to overcome this problem in the cantholysis.
Method
Between January 2011 and December
2012, the authors used this technique in 26 patients with orbital fractures.
When the transconjunctival approach was performed, an
inferolateral incision of the lower eyelid near the
lateral canthus including the tarsal plate was added instead of the common
lateral canthotomy incision for the cantholysis (see Figure 1).
Result
Average follow-up was 6
months. There were no functional complications (no webbing, no ectropion, no entropion, etc) related to the operation. In 24 of 26 cases (92%) they
were rated as having an excellent cosmetic outcome; however, there were two
cases (8%) with complications. One patient had a subcutaneous preseptal hematoma, which required reoperation to obtain
hemostasis. In another patient, there was a notch deformity on the lower eyelid
margin, but the patient was satisfied and did not choose to have it revised.
Conclusions
The authors believe that for orbital fracture repair the modified transconjunctival incision with lateral peri-canthal incision can be easily performed and reliably repaired as opposed to the more traditional lateral canthotomy technique. We believe that there is more anatomical reliability in repairing the tarsal plate rather than the attachment of the lateral canthus. Furthermore, in our experience this modified technique provided more than adequate exposure for fracture repair, with excellent cosmetic and functional result on long-term follow-up.
Figure 1. Transconjunctival incision with lateral peri-canthal incision