B Sloan1, A A McNab. 1. Orbital, Plastic and Lacrimal Unit, Royal Victorian Eye and Ear Hospital, East Melbourne, Australia.
Abstract
BACKGROUND: Extra-ocular muscle rupture is uncommon, usually seen after penetrating trauma or surgery. It is a very rare cause of diplopia following blunt orbital trauma. METHODS: A patient who presented with no inferior rectus function after blunt orbital trauma is described. RESULTS: Computed tomography (CT) scans demonstrated a large orbital floor fracture and suggested that the inferior rectus muscle was ruptured. This was confirmed at operation. Despite anatomical repair, there was no postoperative improvement in ocular motility. CONCLUSIONS: Traumatic rupture of the inferior rectus is rare. Forced duction and force generation testing and CT are important in diagnosing ocular motility defects following orbital trauma.
BACKGROUND: Extra-ocular muscle rupture is uncommon, usually seen after penetrating trauma or surgery. It is a very rare cause of diplopia following blunt orbital trauma. METHODS: A patient who presented with no inferior rectus function after blunt orbital trauma is described. RESULTS: Computed tomography (CT) scans demonstrated a large orbital floor fracture and suggested that the inferior rectus muscle was ruptured. This was confirmed at operation. Despite anatomical repair, there was no postoperative improvement in ocular motility. CONCLUSIONS:Traumatic rupture of the inferior rectus is rare. Forced duction and force generation testing and CT are important in diagnosing ocular motility defects following orbital trauma.
Authors: Andrea A Tooley; Benjamin Levine; Kyle J Godfrey; Richard D Lisman; Ann Q Tran; John E Sherman Journal: Craniomaxillofac Trauma Reconstr Date: 2020-05-21