Grisel's syndrome post otolaryngology procedures: A systematic review.

Objective: To increase awareness and the index of suspicion regarding Grisel's syndrome among otolaryngologists after otolaryngology procedures.

Method: We conducted a search of MEDLINE/PubMed for articles published through January 2020 utilizing the following terms: Grisel's syndrome, Grisel syndrome, and atlantoaxial subluxation alone and in combination with other terms like ENT, otolaryngology, head & neck, tonsillectomy, adenoidectomy, adenotonsillectomy, mastoidectomy, tympanoplasty, and tympanomastoidectomy. We included English-language cases that occurred after surgical procedures and contained the following data: age, onset, common presenting symptoms, diagnostic approach, management options, and the presence of complications.