Defining a Safe Corridor of Cervical Branch Preservation in Lateral Platysmaplasty Surgery During Facial Rejuvenation Surgery

2021 ◽  
Author(s):  
William L E Malins ◽  
Hamish Walker ◽  
John Guirguis ◽  
Muhammad Riaz ◽  
Daniel B Saleh
Keyword(s):  
Distal Part ◽  
Narrow Range ◽  
Lateral Neck ◽  
Anterior Border ◽  
Cervical Nerve ◽  
Medial Border ◽  
Lateral Zone ◽  
Key Points ◽  
Depressor Anguli Oris ◽  
Reduced Risk

Abstract Background During rhytidectomies, the cervical branch of the facial nerve (CBFN) can easily be encountered, and potentially injured, when releasing the cervical retaining ligaments in the lateral neck. This nerve has been shown to occasionally co-innervate the depressor anguli oris muscle, and damage to it can thus potentially compromise outcomes with a post-operative palsy. Objectives To examine the lateral cervical anatomy specific to the CBFN, to ascertain if the position of the nerve can be predicted, enhancing safety of the platysmal flap separation and dissection from this lateral zone of adhesion. Methods Eleven cadaveric hemifaces were dissected and the distance between the medial border of sternocleidomastoid (SCM), and the CBFN was measured at three key points: (1) ‘Superior’: the distance between SCM and the nerve at the level of the angle of the mandible in neutral. (2) ‘Narrowest’: the narrowest distance measurable between the ‘superior’ and ‘inferior’ points as the CBFN descends into the neck medial to the SCM. (3) ‘Inferior’: the distance at the most distal part of the cervical nerve identified before its final intramuscular course. Results The average distances (in mms) were: Superior = 12.1 (range: 10.1-15.4), Narrowest = 8.8 (range: 5.6-12.2) and Inferior = 10.9 (range: 7.9-16.7). Conclusions There is a narrow range between the nerve and the anterior border of SCM. We thus propose a safe corridor where lateral deep plane dissection can be performed to offer cervical retaining ligament release, with reduced risk of endangering the CBFN.

scholarly journals CMV reactivation after allogeneic HCT and relapse risk: evidence for early protection in acute myeloid leukemia

Blood ◽  
2013 ◽  
Vol 122 (7) ◽  
pp. 1316-1324 ◽  
Author(s):  
Margaret L. Green ◽  
Wendy M. Leisenring ◽  
Hu Xie ◽  
Roland B. Walter ◽  
Marco Mielcarek ◽  
...  
Keyword(s):  
Acute Myeloid Leukemia ◽  
Myeloid Leukemia ◽  
Early Relapse ◽  
Relapse Risk ◽  
Allogeneic Hct ◽  
Increased Risk ◽  
Key Points ◽  
Cmv Reactivation ◽  
Reduced Risk ◽  
Acute Myeloid

Key Points CMV reactivation after HCT is associated with a reduced risk of early relapse in patients with AML but not other disease groups. The benefit, however, is offset by an increased risk of nonrelapse mortality.

scholarly journals KIR B haplotype donors confer a reduced risk for relapse after haploidentical transplantation in children with ALL

Blood ◽  
2014 ◽  
Vol 124 (17) ◽  
pp. 2744-2747 ◽  
Author(s):  
Lena Oevermann ◽  
Sebastian U. Michaelis ◽  
Markus Mezger ◽  
Peter Lang ◽  
Jacek Toporski ◽  
...  
Keyword(s):  
Acute Lymphoblastic Leukemia ◽  
Selection Criteria ◽  
Lymphoblastic Leukemia ◽  
Donor Selection ◽  
Childhood Acute Lymphoblastic Leukemia ◽  
Pediatric Acute Lymphoblastic Leukemia ◽  
Haploidentical Transplantation ◽  
Key Points ◽  
Reduced Risk

Key Points KIR haplotype B donors and high KIR B content score confer better protection against relapse after HLA-haploidentical transplantation in pediatric acute lymphoblastic leukemia. Haploidentical donor selection criteria for childhood acute lymphoblastic leukemia should include KIR haplotype and KIR B-content score.

Tibial Spine Location Influences Tibial Tunnel Placement in Anatomical Single-Bundle Anterior Cruciate Ligament Reconstruction

2020 ◽  
Author(s):  
Takanori Iriuchishima ◽  
Bunsei Goto
Keyword(s):  
Acl Reconstruction ◽  
Cruciate Ligament ◽  
Tibial Tunnel ◽  
Single Bundle ◽  
Tunnel Placement ◽  
Anterior Border ◽  
Medial Border ◽  
Tibial Spine ◽  
Anterior Cruciate ◽  
Tibia Plateau

AbstractThe purpose of this study was to assess the influence of tibial spine location on tibial tunnel placement in anatomical single-bundle anterior cruciate ligament (ACL) reconstruction using three-dimensional computed tomography (3D-CT). A total of 39 patients undergoing anatomical single-bundle ACL reconstruction were included in this study (30 females and 9 males; average age: 29 ± 15.2 years). In anatomical single-bundle ACL reconstruction, the tibial and femoral tunnels were created close to the anteromedial bundle insertion site using a transportal technique. Using postoperative 3D-CT, accurate axial views of the tibia plateau were evaluated. By assuming the medial and anterior borders of the tibia plateau as 0% and the lateral and posterior borders as 100%, the location of the medial and lateral tibial spine, and the center of the tibial tunnel were calculated. Statistical analysis was performed to assess the correlation between tibial spine location and tibial tunnel placement. The medial tibial spine was located at 54.7 ± 4.5% from the anterior border and 41.3 ± 3% from the medial border. The lateral tibial spine was located at 58.7 ± 5.1% from the anterior border and 55.3 ± 2.8% from the medial border. The ACL tibial tunnel was located at 34.8 ± 7.7% from the anterior border and 48.2 ± 3.4% from the medial border. Mediolateral tunnel placement was significantly correlated with medial and lateral tibial spine location. However, for anteroposterior tunnel placement, no significant correlation was found. A significant correlation was observed between mediolateral ACL tibial tunnel placement and medial and lateral tibial spine location. For clinical relevance, tibial ACL tunnel placement might be unintentionally influenced by tibial spine location. Confirmation of the ACL footprint is required to create accurate anatomical tunnels during surgery. This is a Level III; case–control study.

scholarly journals Experimental Research on Foamed Mixture Lightweight Soil Mixed with Fly-Ash and Quicklime as Backfill Material behind Abutments of Expressway Bridge

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Xin Liu ◽  
Ke Sheng ◽  
Zhi-long Li ◽  
Liang-qin Gan ◽  
Hao Shan ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Unconfined Compressive Strength ◽  
Narrow Range ◽  
Cement Content ◽  
Orthogonal Experiment ◽  
Construction Techniques ◽  
Key Points ◽  
Experiment Method ◽  
Orthogonal Experiment Method

To promote the utilization of fly-ash, based on the orthogonal experiment method, wet density and unconfined compressive strength of Foamed Mixture Lightweight Soil mixed with fly-ash and quicklime (FMLSF) are studied. It is shown that the wet density and unconfined compressive strength of FMLSF increase with the increase of cement content, while decreasing with the increase of foam content. With the mixing content of fly-ash increase, the wet density and unconfined compressive strength of FMLSF increase firstly and then decrease. Scanning Electron Microscope (SEM) tests show that ball effect or microaggregate effect of fly-ash improves the wet density and unconfined compressive strength of FMLSF. With the mixing content of quicklime increase, the wet density and unconfined compressive strength of FMLSF increase firstly within a narrow range and then decrease. In addition, the primary and secondary influence order on wet density and 28-day compressive strength of FMLSF are obtained, as well as the optimal mixture combination. Finally, based on two abutments in China, behind which they are filled with FMLSF and Foamed Mixture Lightweight Soil (FMLS), the construction techniques and key points of quality control behind abutment are compared and discussed in detail, and the feasibility of utilization fly-ash as FMLSF is verified by the experimental results.

scholarly journals Factor XI deficiency is associated with lower risk for cardiovascular and venous thromboembolism events

Blood ◽  
2017 ◽  
Vol 129 (9) ◽  
pp. 1210-1215 ◽  
Author(s):  
Meir Preis ◽  
Julianna Hirsch ◽  
Antonio Kotler ◽  
Ahmad Zoabi ◽  
Nili Stein ◽  
...  
Keyword(s):  
Venous Thromboembolism ◽  
Lower Risk ◽  
Cardiovascular Events ◽  
Factor Xi ◽  
Factor Xi Deficiency ◽  
Key Points ◽  
Thromboembolism Events ◽  
Reduced Risk

Key Points Factor XI deficiency is associated with reduced risk of cardiovascular events. Factor XI deficiency is associated with reduced risk of VTE.

scholarly journals Branchial Cyst: An Unusual Presentation as Intrathoracic Extension and Hoarseness of Voice

2011 ◽  
Vol 2 (1) ◽  
pp. 69-71
Author(s):  
HP Singh ◽  
Sunil Kumar ◽  
Ambrish Kumar ◽  
SP Agarwal
Keyword(s):  
Unusual Case ◽  
Early Adulthood ◽  
Neck Mass ◽  
Definitive Treatment ◽  
Lateral Neck ◽  
Lateral Aspect ◽  
Anterior Border ◽  
Soft Tissue Swelling ◽  
Branchial Cleft ◽  
Branchial Cleft Cysts

ABSTRACT Branchial cleft cysts usually present as a unilateral, fluctuant soft tissue swelling that is localized deep to the anterior border of sternocleidomastoid in the lateral aspect of the neck. They are often noticed late in childhood or early adulthood. It is important that clinical diagnosis and, in some cases, appropriate imaging is performed, so that definitive treatment may be carried out. The authors present an unusual case of a 35-year-old man who presented with hoarseness of voice associated with a lateral neck mass that extended retrosternally.

scholarly journals Numerical simulation of an osteoporotic femur

2008 ◽  
pp. 785-793
Author(s):  
Mohamed Tellache ◽  
Emmanuel Rixrath ◽  
Patrick Chabrand ◽  
Christian Hochard ◽  
Martine Pithioux ◽  
...  
Keyword(s):  
Cortical Bone ◽  
Bone Tissue ◽  
Distal Part ◽  
Metabolic Diseases ◽  
Hip Prosthesis ◽  
Bone Geometry ◽  
Human Femur ◽  
Lateral Zone ◽  
Stem Stability ◽  
Density Threshold

Bone remodelling adapts bone geometry and properties under supported loadings. This optimization process is deteriorated by metabolic diseases like osteoporosis which involves femoral neck fractures and implies Total Hip Arthroplasty. Two finite element models are developed to evaluate the stress distribution within osteoporotic human femur bone tissue, and its influence on the stem stability. The geometries of human femur and prosthesis are obtained by helicoid scanner acquisition. The cortical bone was separated from the trabecular bone by apparent density threshold. The results obtained for osteoporotic femur show that the degradation of trabecular architecture causes high stresses in the anteroinferior zone of the cortical bone. For the femur with hip prosthesis, high stresses weak the bone tissue in the lateral zone of the proximal dyaphisis and in the medial zone of the distal part at the end of the stem.

Activated innate lymphoid cells are associated with a reduced susceptibility to graft-versus-host disease

Blood ◽  
2014 ◽  
Vol 124 (5) ◽  
pp. 812-821 ◽  
Author(s):  
J. Marius Munneke ◽  
Andreas T. Björklund ◽  
Jenny M. Mjösberg ◽  
Karin Garming-Legert ◽  
Jochem H. Bernink ◽  
...  
Keyword(s):  
Graft Versus Host Disease ◽  
Innate Lymphoid Cells ◽  
Lymphoid Cells ◽  
Host Disease ◽  
High Frequencies ◽  
Allogeneic Hsct ◽  
Graft Versus Host ◽  
Key Points ◽  
Reduced Risk

Key Points Chemotherapy and radiotherapy deplete ILCs from the blood; ILC reconstitution after allogeneic HSCT is slow. High frequencies of activated ILCs with tissue homing potential before allogeneic HSCT are associated with reduced risk for GVHD.

Scanning Electron Microscopy of Fish Scales as an Adjunctive Aid in Speciation

1972 ◽  
Vol 30 ◽  
pp. 394-395
Author(s):  
Edward D. DeLamater ◽  
Walter R. Courtenay ◽  
Cecil Whitaker
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Lateral Line ◽  
Species Differences ◽  
Fish Scale ◽  
Fish Scales ◽  
Anterior Border ◽  
The University ◽  
Multiple Holes ◽  
Scanning Electron

Comparative scanning electron microscopy studies of fish scales of different orders, families, genera and species within genera have demonstrated differences which warrant elaboration. These differences in detail appear to be sufficient to act as “fingerprints”, at least, for family differences. To date, the lateral line scales have been primarily studied. These demonstrate differences in the lateral line canals; the pattern of ridging with or without secondary protuberances along the edges; the pattern of spines or their absence on the anterior border of the scales; the presence or absence of single or multiple holes on the ventral and dorsal sides of the lateral line canal covers. The distances between the ridges in the pattern appear likewise to be important.A statement of fish scale structure and a comparison of family and species differences will be presented.The authors wish to thank Dr. Donald Marzalek and Mr. Wallace Charm of the Marine and Atmospheric Laboratory of the University of Miami and Dr. Sheldon Moll and Dr. Richard Turnage of AMR for their exhaustive help in these preliminary studies.

(111) Monocrystalline Nickel Films

1972 ◽  
Vol 30 ◽  
pp. 512-513
Author(s):  
T.E. Pratt ◽  
R.W. Vook
Keyword(s):  
Film Thickness ◽  
Deposition Rate ◽  
Room Temperature ◽  
Narrow Range ◽  
High Vacuum ◽  
Residual Pressure ◽  
Temperature Dependent ◽  
Deposition Parameters ◽  
Transmission Electron ◽  
Substrate Temperatures

(111) oriented thin monocrystalline Ni films have been prepared by vacuum evaporation and examined by transmission electron microscopy and electron diffraction. In high vacuum, at room temperature, a layer of NaCl was first evaporated onto a freshly air-cleaved muscovite substrate clamped to a copper block with attached heater and thermocouple. Then, at various substrate temperatures, with other parameters held within a narrow range, Ni was evaporated from a tungsten filament. It had been shown previously that similar procedures would yield monocrystalline films of CU, Ag, and Au.For the films examined with respect to temperature dependent effects, typical deposition parameters were: Ni film thickness, 500-800 A; Ni deposition rate, 10 A/sec.; residual pressure, 10-6 torr; NaCl film thickness, 250 A; and NaCl deposition rate, 10 A/sec. Some additional evaporations involved higher deposition rates and lower film thicknesses.Monocrystalline films were obtained with substrate temperatures above 500° C. Below 450° C, the films were polycrystalline with a strong (111) preferred orientation.

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