Innovative CAD/CAM Guide for Mandibular Reconstruction with Metallic Condylar Head and Free Fibular Flap

Latar belakang: Perkembangan teknik pembedahan mikrovaskular telah menghasilkan jabir bebas fibula yang dapat digunakan untuk rekonstruksi oromandibular. Jabir bebas fibula merupakan salah satu jabir tulang yang sering digunakan untuk mengatasi defek pada daerah wajah, terutama dalam rekonstruksi mandibula. Jabir ini memiliki banyak keunggulan dibandingkan dengan jabir tulang lainnya, seperti jabir skapula dan jabir iliaka. Jabir ini memiliki angka kesuksesan yang cukup tinggi yaitu mencapai 95%, namun untuk mencapai angka keberhasilan tersebut diperlukan perencanaan yang tepat sebelum dilakukannya pengambilan jabir mulai dari preoperatif, perioperatif, intraoperatif, dan pascaoperatif. Tujuan: Para ahli THT dapat mengetahui perencanaan yang tepat sebelum melakukan rekonstruksi mandibula. Tinjauan pustaka: Jabir bebas fibula memiliki angka keberhasilan yang tinggi dan merupakan jabir pilihan untukrekonstruksi mandibula. Kesimpulan: Perencanaan yang tepat mulai dari preoperatif sampai pascaoperatif sebelum dilakukan pengambilan jabir bebas fibula sangat diperlukan untuk mendapatkan hasil yang optimal.Kata kunci: Jabir bebas fibula, pembedahan mikrovaskular, rekonstruksi mandibula ABSTRACTBackground: Development in microvascular surgery technique has created a flap that can be used for oromandibular reconstruction. Free fibular flap is one of the bone flaps that frequently use for facial defects, especially mandibular reconstruction. This flap has lots of advantages than other bone flaps, such as scapula flap and iliac crest flap. Free fibular flap has a high successful rate up to 95%, but it needs meticulous planning before harvesting the bone; preoperative, perioperative, intraoperative, and postoperative is needed to get the high successful rate. Purpose: To inform ENT specialists about the appropriate planning before mandibular reconstruction. Literature review: Free fibular flap has a high successful rate and one of the excellent choices for mandibular reconstruction. Conclusion: The right preoperative to postoperative planning before doing the free fibularflap is very important to obtain optimal outcome. Keywords: Free fibular flap, microvascular surgery, mandibular reconstruction

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Deviation Analyses of Computer-Assisted, Template-Guided Mandibular Reconstruction With Combined Osteotomy and Reconstruction Pre-Shaped Plate Position Technology: A Comparative Study

Frontiers in Oncology ◽

10.3389/fonc.2021.719466 ◽

2021 ◽

Vol 11 ◽

Author(s):

Jie Chen ◽

Ruipu Zhang ◽

Ye Liang ◽

Yujie Ma ◽

Saiwen Song ◽

...

Keyword(s):

Coracoid Process ◽

Mandibular Reconstruction ◽

Computer Assisted ◽

Anatomical Landmarks ◽

Virtual Planning ◽

Actual Length ◽

Deviation Analysis ◽

Resection Line ◽

Condylar Head ◽

Fibular Flap

BackgroundComputer-assisted and template-guided mandibular reconstruction provides higher accuracy and less variation than conventional freehand surgeries. The combined osteotomy and reconstruction pre-shaped plate position (CORPPP) technique is a reliable choice for mandibular reconstruction. This study aimed to evaluate the accuracy of CORPPP-guided fibular flap mandibular reconstruction and analyze the possible causes of the deviations.Patients and MethodsFrom June 2015 to December 2016, 28 patients underwent fibular flap mandibular reconstruction. Virtual planning and personalized CORPPP-guided templates were applied in 15 patients while 13 patients received conventional freehand surgeries. Deviations during mandibulectomy and fibular osteotomy, and overall and triaxial deviation of the corresponding mandibular anatomical landmarks were measured by superimposing the pre- and postoperative virtual models.ResultsThe deviation of the resection line and resection angle was 1.23 ± 0.98 mm and 4.11° ± 2.60°. The actual length of fibula segments was longer than the designed length in 7 cases (mean: 0.35 ± 0.32 mm) and shorter in 22 cases (mean: 1.53 ± 1.19 mm). In patients without ramus reconstruction, deviations of the ipsilateral condylar head point (Co.), gonion point (Go.), and coracoid process point (Cor.) were 6.71 ± 3.42 mm, 5.38 ± 1.71 mm, and 11.05 ± 3.24 mm in the freehand group and 1.73 ± 1.13 mm, 1.86 ± 0.96 mm, and 2.54 ± 0.50 mm in the CORPPP group, respectively, with significant statistical differences (p < 0.05). In patients with ramus reconstruction, deviations of ipsilateral Co. and Go. were 9.79 ± 4.74 mm vs. 3.57 ± 1.62 mm (p < 0.05), and 15.17 ± 6.53 mm vs. 4.36 ± 1.68 mm (p < 0.05) in the freehand group and CORPPP group, respectively.ConclusionMandibular reconstructions employing virtual planning and personalized CORPPP-guided templates show significantly higher predictability, convenience, and accuracy of mandibular reconstruction compared with conventional freehand surgeries. However, more clinical cases were required for further dimensional deviation analysis. The application and exploration of clinical practice would also continuously improve the design of templates.

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