Clinical Definition

MMA involves:

  • Maxillary Advancement: Moving the upper jaw forward
  • Mandibular Advancement: Moving the lower jaw forward
  • Airway Enlargement: Increasing retroglossal and retropalatal space
  • Skeletal Modification: Changing the underlying bony framework
  • Soft Tissue Advancement: Moving attached muscles and tissues forward

The procedure typically involves controlled fractures of both jaws, advancement of 8-12mm, and fixation with titanium plates and screws. It addresses multiple levels of obstruction simultaneously.

Etymology & History

MMA for sleep apnea was first described by Dr. Robert Riley and colleagues at Stanford University in the 1980s. It was developed as a more comprehensive surgical approach for severe OSA cases.

Reference Values & Interpretation

Normal Values

MMA has the highest success rate among sleep apnea surgeries, with cure rates (AHI <5) of 38-67% and success rates (AHI 50% reduction) of 75-100%. Results are generally excellent and durable.

Abnormal Values

MMA complications can include bleeding, infection, nerve injury, malocclusion, and aesthetic changes. The procedure requires significant recovery time and may need orthodontic treatment.

How It's Measured

MMA outcomes are assessed through follow-up sleep studies typically performed 6-12 months after surgery, along with clinical evaluation of symptoms and complications.

Role in Diagnosis

MMA is used as a definitive treatment for severe OSA in carefully selected patients. Preoperative evaluation includes comprehensive sleep and anatomical assessment, often with imaging studies.

Role in Treatment

MMA is the most effective surgical treatment for OSA, providing excellent long-term results for appropriately selected patients. It's particularly valuable for young patients with severe disease who want a definitive solution.

Associated Conditions

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Clinical Guidelines

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Latest Research & Updates

AI-Updated Weekly

Recent advances in MMA include improved surgical techniques, better patient selection criteria, and the use of 3D imaging for surgical planning. Outcomes continue to improve with experience and technology.