scholarly journals How I do it: Repair of a lateral nasal wall defect using the modified bilobed flap

2021 ◽  
Author(s):  
N. Vallabh ◽  
M. Khalid-Raja
Keyword(s):  
Lateral Nasal Wall ◽  
Wall Defect ◽  
Bilobed Flap

Geometric Analysis of the Bilobed Flap for Nasal Reconstruction Surgery

FACE ◽  
2021 ◽  
pp. 273250162199390
Author(s):  
Daniel Henick ◽  
Kelvin K. Ampem-Darko ◽  
Farah Sayegh ◽  
Paymon Sanati-Mezrahi ◽  
Mehul Bhatt ◽  
...  
Keyword(s):  
Geometric Analysis ◽  
Nasal Reconstruction ◽  
Anatomical Features ◽  
Reconstruction Surgery ◽  
Repair Technique ◽  
Bilobed Flap ◽  
Calculated Ratio ◽  
Flap Design ◽  
Objectively Measured ◽  
Angle Of Rotation

Background: Reconstruction of the nose can be difficult due to its complex anatomical features. In 1989, Zitelli described a modified version of the bilobed flap design technique using 45° and 90° angles to improve nasal reconstructions. While the bilobed flap is still frequently referenced in scholarly literature, there seems to be inconsistency in preoperative flap design; these deviations can lead to suboptimal outcomes. The authors aim to illustrate the variability in bilobed flap execution and provide guidelines in preoperative design to improve consistency. Methods: A geometrically-based approach was used to characterize the inconsistency of bilobed repair technique. The pre-operative design images from fifteen scholarly articles were analyzed via a series of measurements and computations to quantify the angle of rotation and dimensions for the primary and secondary lobes. The “Error Quotient” was a calculated ratio that objectively measured the extent to which a bilobed design deviated from Zitelli’s specifications. Results: There was a noticeable variability in the design of both the primary and secondary lobes. Bilobed designs with smaller angles of rotation, particularly of the first lobe, were associated with higher Error Quotients and greater amounts of deviation from Zitelli’s design. Designs with the smallest Error Quotients had a primary lobe rotation that approached 45°. Conclusion: Consistency of application of the bilobed flap should be established to allow for optimal results, particularly with emphasis on design of the primary lobe. This can be accomplished by including a disposable protractor and marker in their sterile kit to measure a 45° rotation.

Bio‐Multifunctional Hydrogel Patches for Repairing Full‐Thickness Abdominal Wall Defect

2021 ◽  
pp. 2105614
Author(s):  
Xiangyi Yin ◽  
Yuanping Hao ◽  
Yun Lu ◽  
Dongjie Zhang ◽  
Yaodong Zhao ◽  
...  
Keyword(s):  
Abdominal Wall ◽  
Abdominal Wall Defect ◽  
Full Thickness ◽  
Wall Defect

scholarly journals Longitudinal Guided Wave Inspection of Small-Diameter Elbowed Steel Tubes with a Novel Squirrel-Cage Magnetostrictive Sensor

2019 ◽  
Vol 2019 ◽  
pp. 1-9
Author(s):  
Yao Liu ◽  
Xiucheng Liu ◽  
Chehua Yang ◽  
Wenxin Guo ◽  
Bin Wu ◽  
...  
Keyword(s):  
Finite Element ◽  
Guided Waves ◽  
Mode Conversion ◽  
Small Diameter ◽  
Longitudinal Mode ◽  
Guided Wave ◽  
Wall Defect ◽  
Squirrel Cage ◽  
Simulation Results ◽  
Magnetostrictive Sensor

In the study, ultrasonic longitudinal mode guided waves were employed to detect defects in elbowed tubes (without welds) with a diameter of 10 mm. Finite element simulation results highlighted that the emitted L(0,1) mode guided waves experienced strong reflection and mode conversion at the elbow region to generate F(1,1) mode, followed by slow and weak F(2,1) mode. The guided wave reflected from the elbow with a through-wall defect was manifested as two overlapped wave packets, which were good indicators of a defective elbow. To conduct L(0,1) mode guided waves inspection on the small-diameter elbowed tubes, a novel tailored squirrel-cage magnetostrictive sensor was employed in the experiment. The new sensor employed the configuration of segmental iron-cobalt strips and small-size permanent magnet arrays. The entire sensor is composed of two identical C-shaped sensor elements and can be recycled and installed conveniently. Experimental results obtained from healthy and defective tubes were consistent with the conclusions obtained from finite element simulations. An artificial through-wall defect at the elbow and a notch defect at the straight part of the tube could be simultaneously detected by L(0,1) mode guided waves through comparing experimental signals with simulation results.

scholarly journals Idiopathic Free-Floating Thrombus of the Common Carotid Artery

2002 ◽  
Vol 29 (1) ◽  
pp. 97-99 ◽  
Author(s):  
Brian Silver ◽  
Irene Gulka ◽  
Michael Nicolle ◽  
Ramesh Sahjpaul ◽  
Vladimir Hachinski
Keyword(s):  
Carotid Artery ◽  
Common Carotid Artery ◽  
Multimodal Imaging ◽  
Doppler Ultrasonography ◽  
Resonance Imaging ◽  
Wall Defect ◽  
Floating Thrombus ◽  
Weighted Magnetic Resonance Imaging ◽  
The Common ◽  
One Year

Background:The observation of an intraluminal common carotid artery thrombus overlying a wall defect at ultrasonography or angiography is unusual. To our knowledge, there are no previous reports of a free-floating thrombus in the common carotid artery.Case Report:A 45-year-old woman who was previously healthy and on no medications presented with acute hemiparesis and aphasia. Following testing that included carotid duplex and trancranial Doppler ultrasonography, diffusion-weighted magnetic resonance imaging, and digital subtraction angiography, the patient underwent emergency open embolectomy. No underlying wall defect was seen at the time of imaging or surgery. No obvious hypercoagulable state could be identified. Her NIH Stroke Scale score improved from 26 at admission to 2 at three months and 1 at one year.Conclusions:Multimodal imaging may have improved diagnosis and management in this patient with a unique finding. The source of the thrombus remains obscure.

Prenatal Diagnosis of a Fetal Abdominal Eventration: A Rare Congenital Abdominal Wall Defect

2007 ◽  
Vol 23 (2) ◽  
pp. 117-120
Author(s):  
Philippe Roth ◽  
Alain Martin ◽  
Fariz Bawab ◽  
Florence Fellmann ◽  
Didier Aubert ◽  
...  
Keyword(s):  
Prenatal Diagnosis ◽  
Abdominal Wall ◽  
Abdominal Wall Defect ◽  
Wall Defect

Bilobed flap for web reconstruction in adult syndactyly release: A new technique that can avoid the use of skin graft

2014 ◽  
Vol 67 (6) ◽  
pp. 815-821 ◽  
Author(s):  
Cihan Sahin ◽  
Ozge Ergun ◽  
Yalcin Kulahci ◽  
Celalettin Sever ◽  
Huseyin Karagoz ◽  
...  
Keyword(s):  
Skin Graft ◽  
New Technique ◽  
Bilobed Flap ◽  
A New Technique ◽  
Web Reconstruction

Rotation-Transposition Correction of Nasal Deformity in Tessier Number 1 and 2 Clefts

2009 ◽  
Vol 46 (6) ◽  
pp. 674-680 ◽  
Author(s):  
Mamoon Rashid ◽  
Muhammad Zia ul Islam ◽  
Muhammad Sarmad Tamimy ◽  
Ehtesham ul Haq ◽  
Samina Aman ◽  
...  
Keyword(s):  
Lateral Nasal Wall ◽  
Nasal Deformity ◽  
Postoperative Results ◽  
Transposition Flap ◽  
Patients Âgés ◽  
Female Patients ◽  
Minimal Scarring ◽  
Flap Viability ◽  
Alar Rim

Objective: To formulate a standardized procedure for repair of the nasal component of Tessier number 1 and 2 clefts. Patients and Methods: The procedure was performed from 1998 to 2007 in 13 patients with congenital nasal clefts of different degrees of expression corresponding to Tessier 1 and 2. The patients’ ages ranged from 3 months to 28 years. There were 10 male and three female patients. In the absence of any standard published technique for these rare defects, we devised our own method, which we find uniformly applicable to all such cases. We use a composite muco-chondro-cutaneous lateral alar flap to recreate the alar rim. The resulting defect on the lateral nasal wall is then covered with a transposition flap from the dorsum. An alar rim z-plasty was added in cases where notching was evident. Results: In all cases, no problem of flap viability was encountered and all healed well with minimal scarring. The postoperative results were satisfactory and have remained stable over an average 6-month follow-up period. Conclusions: We recommend this technique to be used for the correction of nasal deformity associated with Tessier clefts number 1 and 2. We feel that this technique is relatively simple and easily reproducible.

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