PMC8016048_01
Limited mouth opening with maximal effort. Interincisional opening of 8 mm
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F1
However, on further exam, he had very limited mouth opening with an interincisional opening of 8 mm [Figure 1].
MRI Ax-T1: Atrophied masseter muscles with fatty infiltration
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F2
The child returned to the OR three months later for bilateral coronoidectomies and release of masseter trismus under the same anesthetic preparation and approach [Figure 2].