Preoperative Facial Muscle Imaging Predicts Final Facial Function after Facial Nerve Grafting
David M. Kayliea,
Mark K. Waxa and
Jane L. Weissmana,b
a Departments of Otolaryngology-Head and Neck Surgery (D.M.K., M.K.W., J.L.W.), Oregon Health and Sciences University, Portland
b Radiology, Division of Neuroradiology (J.L.W.), Oregon Health and Sciences University, Portland
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FIG 1. Axial MR image of patient with symmetrical facial muscles (arrows).
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FIG 2. Axial MR image of patient with mild atrophy of the right buccinator (large solid arrow) and normal left buccinator (small open arrow).
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FIG 3. Axial MR image of patient with mild atrophy of left facial muscles (large arrow) compared with right facial muscles (small arrow).
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FIG 4. Images of patient with pronounced asymmetry.
A, Sagittal view MR image shows normal left orbicularis (long arrow) and normal left frontalis (short arrow).
B, Image of same patient shown in A shows pronounced atrophy of right orbicularis (long arrow) and frontalis (short arrow).
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FIG 5. Coronal view MR image shows pronounced atrophy of the right platysma compared with left (arrows).
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FIG 6. Axial view MR image shows pronounced atrophy of left facial muscle compared with right (arrows).
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FIG 7. Graph shows House-Brackmann grades for preoperative imaging and preoperative facial function.
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FIG 8. Graph shows May grades for preoperative imaging and final facial function after nerve grafting.
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FIG 9. Chart compares preoperative imaging, preoperative facial function, and final facial function.
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