Tsuge Takuya, Kuwahara Hiroaki, Akaishi Satoshi, Ogawa Rei
Department of Plastic, Reconstructive and Aesthetic Surgery, Nippon Medical School Musashikosugi Hospital, Kanagawa, Japan.
Department of Plastic, Reconstructive and Aesthetic Surgery, Nippon Medical School Hospital, Tokyo, Japan.
Plast Reconstr Surg Glob Open. 2021 Jan 26;9(1):e3194. doi: 10.1097/GOX.0000000000003194. eCollection 2021 Jan.
Cryptotia is a congenital auricular deformity. Common methods of surgical reconstruction involve creating an auricular temporal groove using local flaps and/or a skin graft. However, it can be difficult to determine which method is most suited to the unique 3-dimensional (3D) structure of each cryptotic ear. Here, we showed that creating 3D ear models of a cryptotic ear with a 3D camera and printer and using these models to simulate surgery with two different flap methods (cat's-ear and square) allowed selection of a reconstruction method that led to good outcomes after the actual surgery. The patient was a 7-year-old girl with left cryptotia. A 3D camera was used to acquire 3D data for the ear. After structural analysis, a home 3D printer was used to print the data into 3D ear models using an elastic material. These models exhibited good plasticity. After subjecting the models to simulated cat's-ear and square flap surgeries, the cat's-ear flap method was considered to better reproduce the healthy side of the ear compared with the square flap method for this particular case. Ear morphology during and after the actual surgery closely resembled the model-ear morphology during and after the simulated cat's-ear flap surgery. We successfully created a full-scale 3D model with good plasticity using a 3D camera and 3D printer. This allowed easy, noninvasive preoperative evaluation and identification of the most suitable operation for the specific case, facilitating easier, more successful surgery.
隐耳是一种先天性耳廓畸形。常见的手术重建方法包括使用局部皮瓣和/或皮肤移植来创建耳颞沟。然而，很难确定哪种方法最适合每个隐耳独特的三维（3D）结构。在此，我们表明，使用3D相机和打印机创建隐耳的3D耳模型，并使用这些模型用两种不同的皮瓣方法（猫耳法和方形法）模拟手术，可以选择一种在实际手术后能取得良好效果的重建方法。患者为一名7岁的左侧隐耳女童。使用3D相机获取耳部的3D数据。经过结构分析后，使用家用3D打印机将数据打印成使用弹性材料的3D耳模型。这些模型具有良好的可塑性。对模型进行模拟猫耳皮瓣和方形皮瓣手术后，对于该特定病例，与方形皮瓣法相比，猫耳皮瓣法被认为能更好地重现耳部的健康侧。实际手术期间及之后的耳部形态与模拟猫耳皮瓣手术期间及之后的模型耳形态非常相似。我们使用3D相机和3D打印机成功创建了具有良好可塑性的全尺寸3D模型。这使得能够轻松、无创地进行术前评估，并确定适合特定病例的最合适手术，从而使手术更轻松、更成功。
