Zygomatic Bone Nonunion After Malar Reduction: A Case Study and 3D Solution

This case study examines the successful treatment of zygomatic bone nonunion following malar reduction surgery using 3D zygoma repositioning. Zygomatic bone nonunion, a complication where the zygomatic bone fails to heal properly after surgery, can lead to facial asymmetry, pain, and functional impairment.

Case Presentation:

A comparison of CT scans taken one month and ten months after malar reduction surgery revealed downward displacement of the osteotomized zygomatic body due to nonunion. Although a preoperative CT scan would have been helpful to assess soft tissue changes caused by the downward displacement, it was unfortunately unavailable.While the patient didn't experience significant discomfort, the nonunion posed a risk of further complications.

Zygomatic Bone Nonunion: Downward Displacement Over Time

3D Zygoma Repositioning:

To address the nonunion and restore facial symmetry, 3D zygoma repositioning was employed. This technique utilizes:

1. CAD software: To plan the surgical procedure and design a customized metal plate for accurate zygomatic bone repositioning.

   

   3D Zygoma Repositioning

2. Customized metal plates:  To ensure precise reconstruction and stable fixation, minimizing the risk of recurrent nonunion.

3. To address the bone defect, autologous bone grafting was planned in conjunction with the zygoma repositioning.

4. During surgery, the customized metal plate guided the precise repositioning of the zygomatic bone.

5. The bone defect was successfully filled with autologous bone graft.

   
   

Outcomes:

• Postoperative CT scans at four months demonstrated successful reconstruction of the zygomatic bone and resolution of the bone defect.

• The patient achieved satisfactory functional and aesthetic outcomes.

Zygomatic Bone Nonunion After Malar Reduction: A Case Study and 3D Solution

Advantages of 3D Zygoma Repositioning:

• Precision: Customized plates ensure accurate and predictable surgical outcomes.

• Stability:  Provides stable fixation, reducing the risk of nonunion recurrence.

• Personalized Treatment: Tailored to the individual patient's anatomy.

Conclusion:

This case study highlights the efficacy of 3D zygoma repositioning with CAD software and customized metal plates in treating zygomatic bone nonunion after malar reduction surgery. This innovative approach offers a promising solution for patients experiencing this complication, improving both functional and aesthetic outcomes.

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https://blog.naver.com/vvsaz144/223640751109