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  • Title: Iatrogenic inferior oblique palsy: intentional disinsertion during transcaruncular approach to orbital fracture repair.
    Author: Tiedemann LM, Lefebvre DR, Wan MJ, Dagi LR.
    Journal: J AAPOS; 2014 Oct; 18(5):511-4. PubMed ID: 25266842.
    Abstract:
    Hypotropia following orbital fracture repair is traditionally attributed to residual tissue entrapment, scarring, direct muscle injury, or damage to the branches of the oculomotor nerve serving the inferior oblique or inferior rectus muscles. We present a case of acquired hypotropia and incyclotropia that occurred following repair of an orbital fracture involving the floor and medial wall. In order to enable adequate visualization and treatment of the combined fractures, access via a transcaruncular approach and disinsertion of the inferior oblique muscle at its origin was necessary. Whereas the possibility of inferior oblique paresis due to repair of an orbital fracture via the transcaruncular approach has received some acknowledgment, there are no prior reports in the ophthalmic literature. Strabismus surgeons should be aware of this possibility when planning surgical correction of hypotropia and incyclotropia in similar cases.
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