The Experts below are selected from a list of 2931 Experts worldwide ranked by ideXlab platform
Michael T. Longaker - One of the best experts on this subject based on the ideXlab platform.
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Chin surgery: II. Submental Ostectomy and soft-tissue excision.
Plastic and reconstructive surgery, 1999Co-Authors: Barry M. Zide, Michael T. LongakerAbstract:At the present time, surgical reduction of an isolated large chin is not a simple procedure. Essentially, two surgical procedures exist for chin reduction: osteotomy with setback or prominence reduction by burring. Both of these procedures have potential negative aesthetic sequelae, including mental nerve injuries, bony contour irregularities, increasing submental soft-tissue fullness, and chin pad ptosis. In this report, the authors present a new approach to chin reduction: submental Ostectomy with soft-tissue excision. This technique reduces the prominent chin and avoids ptosis by soft-tissue adjustment.
Barry M. Zide - One of the best experts on this subject based on the ideXlab platform.
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Chin surgery: II. Submental Ostectomy and soft-tissue excision.
Plastic and reconstructive surgery, 1999Co-Authors: Barry M. Zide, Michael T. LongakerAbstract:At the present time, surgical reduction of an isolated large chin is not a simple procedure. Essentially, two surgical procedures exist for chin reduction: osteotomy with setback or prominence reduction by burring. Both of these procedures have potential negative aesthetic sequelae, including mental nerve injuries, bony contour irregularities, increasing submental soft-tissue fullness, and chin pad ptosis. In this report, the authors present a new approach to chin reduction: submental Ostectomy with soft-tissue excision. This technique reduces the prominent chin and avoids ptosis by soft-tissue adjustment.
Jens D Agneskirchner - One of the best experts on this subject based on the ideXlab platform.
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improvements in surgical technique of valgus high tibial osteotomy
Knee Surgery Sports Traumatology Arthroscopy, 2003Co-Authors: P Lobenhoffer, Jens D AgneskirchnerAbstract:We present four technical modifications of high tibial osteotomy which improve its safety and reproducibility. (a) Open wedge correction: opening wedge osteotomy from the medial side avoids lateral muscle detachment, dissection of the peroneal nerve, proximal fibula osteotomy, and leg shortening; only one osteotomy needs to be performed and the correction can be adapted intraoperatively. (b) Biplanar osteotomy: in addition to the transverse osteotomy of the posterior tibia a second ascending osteotomy in the coronary plane underneath the tibial tuberosity is performed. This provides improved rotational stability of the osteotomy and creates an anterior buttress against sagittal tilting of the osteotomy planes. (c) Incomplete osteotomy with plastic deformation of the tibia: 10 mm of lateral bone stock is left intact. The osteotomy is opened gradually over several minutes by sequential impaction of flat chisels or by use of a special spreading tool. Manifest fractures of the lateral cortex with resulting instability are avoided. Rapid bone healing is promoted. (d) Rigid fixation: stable osteosynthesis allows for early mobilization and avoids losses-of-correction. We use a medial plate-fixator which can be applied percutanously. In 112 patients operated on using this modified technique no pseudarthosis or loss-of-correction was observed.
Xiaolei Jin - One of the best experts on this subject based on the ideXlab platform.
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Comparison of Bilateral Mandibular Angle Ostectomy Between East Asian Males and Females: A Study Based on Three-Dimensional Computed Tomography Reconstruction.
Aesthetic plastic surgery, 2020Co-Authors: Dong Zhang, Jingyi Zhao, Guodong Song, Xianlei Zong, Xiaoshuang Guo, Chenzhi Lai, Xiaolei JinAbstract:BACKGROUND Mandibular angle Ostectomy is a common plastic surgery for facial contouring in East Asians. However, rarely we could find reports on differences between East Asian males and females undergoing this surgery. OBJECTIVE To describe the differences between East Asian males and females before and after mandibular angle Ostectomy. METHODS A total of 22 Asian males and 52 Asian females who underwent mandibular angle Ostectomy from April 2015 to November 2018 were enrolled. Three-dimensional computed tomography was used to evaluate the preoperative and postoperative data of the mandible. Thirteen clinical data were measured on reconstructed mandibular models. The differences in data between males and females were analyzed to identify the causes of the differences before and after surgery. The follow-up was 6-12 months, and patient satisfaction was also evaluated. RESULTS The Ostectomy volume was positively correlated with the distance from the intersection of the occlusal plane and the anterior margin of the mandibular ramus to gonion (MR-Go; female, p
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single stage surgery for contouring the prominent mandibular angle with a broad chin deformity en bloc mandibular angle body chin curved Ostectomy mabcco and outer cortex grinding ocg
Journal of Cranio-maxillofacial Surgery, 2014Co-Authors: Chao Zhang, Fang Xie, Li Teng, Fuan Chiang Chan, Jingyi Zhao, Xiaolei JinAbstract:Background Various surgical options are reported to address the Asian 'squared face', characterized by a prominent mandibular angle (PMA) associated with an oversized chin deformity; but shortcomings lie in the requirement of multi-stage procedures with the risk of further revision surgery. We have developed a single-stage "Mandibular Angle-Body-Chin Curved Ostectomy (MABCCO) and Outer Cortex Grinding (OCG)" surgical technique to shorten the period of the surgical treatment and minimize the inherent surgical risks in the multi-staged procedures. Methods A retrospective study involving patients (n = 36) presented with prominent mandibular angle and an oversized chin who underwent the operation described from 2010 to 2012 with at least 12 months of follow-up. The surgical and aesthetic outcomes were evaluated through clinical assessment, photography, imaging analysis including preoperative and post-operative patient satisfaction rates. Results All the patients were satisfied with the improvement in their appearance following surgery; specifically the 'smoothness' of the mandibular inferior border with no 'second mandibular angle'. The width of the mandible was reduced with G-G distance reduced from 119.9 mm ± 3.9-109.7 mm ± 3.5 (p Conclusion We demonstrated favourable surgical and aesthetic outcomes with our single-stage en-bloc curved osteotomy surgical technique to reshape the prominent mandibular angle with a broad chin deformity with no increased in surgical risks but a high satisfaction rate and stable outcomes.
Dae Hyun Lew - One of the best experts on this subject based on the ideXlab platform.
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reduction malarplasty by bidirectional wedge Ostectomy or two percutaneous osteotomies according to zygoma protrusion type
Journal of Cranio-maxillofacial Surgery, 2016Co-Authors: Wooyeol Baek, Taeyong Woo, Young Seok Kim, In Sik Yun, Jimyung Kim, Se Woon Choi, Tai Suk Roh, Dae Hyun LewAbstract:Abstract Background Reduction malarplasty to correct prominent malar complex is popular in Asians. Despite the popularity of reduction malarplasty, most of the surgical methods applied are not selected according to the degree of zygoma protrusion. In this study, we analyzed the effectiveness of two different surgical procedures to clarify their appropriateness for each zygoma type. Methods One of the procedures used was the “bidirectional wedge Ostectomy,” in which a bidirectional wedge-shaped bone fragment was removed from the zygomatic body via oral incision and oblique complete osteotomy of the zygomatic arch via sideburn incision. Another was the “quick osteotomy,” a greenstick osteotomy of the zygomatic body and complete osteotomy of the zygomatic arch via two skin incisions. We classified zygoma protrusion into two categories: only zygomatic arch protrusion (group 1) and zygomatic body and arch protrusion (group 2). Results The cross-sectional area of the most prominent malar region decreased by 9.4 ± 2.5 mm laterally (zygion-to-zygion) and by 2.9 ± 0.8 mm obliquely (average of center-to-right and left maxillozygion) after the Ostectomy. However, in patients who underwent the osteotomy, while the cross-sectional area decreased by 10.9 ± 2.7 mm laterally, it did not decrease obliquely. Thirty patients (73.2%) in group 1 underwent the osteotomy, and the remaining eleven (26.8%) underwent the Ostectomy. In group 2, 83% (n = 39) underwent the Ostectomy. Conclusion We were able to find the more appropriate procedure for each zygoma protrusion type through outcome analysis. With these results, we suggest that if each procedure is performed according to this classification, more favorable esthetic results of zygoma reduction can be achieved.
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quantitative mandibular angle Ostectomy facilitated by oscillating blade saw with scalable guide
Journal of Craniofacial Surgery, 2016Co-Authors: Sae Bin Lee, Dae Hyun Lew, Hyun Jin Min, Dong Kyun Rah, Won Jai Lee, Seung Yong SongAbstract:BACKGROUND Although various techniques of mandibular angle Ostectomy have been devised to correct overly prominent bony contours, none have incorporated methods to delineate the surgical line with precision. Herein, the authors describe one means of marking an Ostectomy line more easily, using a specially designed oscillating-blade saw. METHODS Between July 2013 and June 2014, a total of 75 patients underwent quantitative mandibular angle Ostectomy using a custom oscillating-blade saw equipped with a scalable guide. Corticectomy, also done routinely to improve frontal appearance, called for a reciprocating saw only. Aesthetic outcomes gauged subjectively by the questionnaire about satisfaction and symmetry after postoperative 6 months. RESULTS Satisfaction score was 4.9 and symmetric score was 4.7. No major complications, such as persistent nerve injury or fracture, were encountered. CONCLUSIONS Use of an oscillating-blade saw equipped with a scalable guide facilitated quantitative mandibular angle Ostectomy, enabling precise, and reproducible surgery with satisfactory outcomes with less complications.
