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Related Experiment Videos

Recurrent bilateral coronoid hyperplasia: an unusual case

A G Smyth1, M J Wake

  • 1Department of Oral and Maxillofacial Surgery, Queen Elizabeth Hospital, Edgbaston, Birmingham, UK.

The British Journal of Oral & Maxillofacial Surgery
|April 1, 1994
PubMed
Summary

This case study details bilateral coronoid hyperplasia, a rare condition. Recurrence after surgery and significant mandibular position changes highlight complex management challenges.

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Area of Science:

  • Oral and Maxillofacial Surgery
  • Orthodontics
  • Anatomy

Background:

  • Bilateral coronoid hyperplasia is a rare condition causing jaw opening limitation.
  • The aetiology of coronoid hyperplasia requires further investigation.
  • Synovial joint formation between coronoid processes and zygomatic bones is an unusual finding.

Observation:

  • A unique case of bilateral coronoid hyperplasia with true synovial joints is presented.
  • Surgical intervention (coronoidectomy) for hyperplasia resulted in recurrence.
  • Recurrence led to renewed limitation of jaw opening and altered mandibular posture.

Findings:

  • Bilateral coronoidectomy did not resolve hyperplasia, which recurred with functional limitation.
  • A subsequent coronoidectomy resulted in a significant shift from retrognathia to prognathia.

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  • The case demonstrates novel recurrence patterns and mandibular positional changes post-surgery.

    • Implications:

    • This case challenges current understanding of coronoid hyperplasia aetiology and recurrence.
    • Management of recurrent coronoid hyperplasia requires careful, long-term planning.
    • The study highlights the complex interplay between coronoid processes, jaw function, and mandibular skeletal relationships.