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Rim graft

Luana Soriano Mota, Claudia Maria Costa de Oliveira, Francisco Martho Leal Pinheiro, Larissa Costa de Oliveira Santos, Danilo Gonçalves Nóbrega, Paula Fbc Fernandes, Alda Angélica de Melo Costa, Sônia Leite da Silva
Introduction: Kidney transplants with expanded criteria donor have been associated with improved patient survival compared to those who remain on dialysis. Objective: To compare renal function and survival of the kidney graft of deceased donor with expanded criteria and standard criteria over a year in a single transplant center. Methods: 255 kidney transplant recipients with deceased donor were included in the study between the years 2011 to 2013 and they were separated into two groups according to the type of donor (expanded criteria donor - ECD - and standard criteria donor - SCD)...
July 2016: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
Alexandre Hardy, Philippe Loriaut, Benjamin Granger, Ahmed Neffati, Audrey Massein, Laurent Casabianca, Hugues Pascal-Moussellard, Antoine Gerometta
PURPOSE: The arthroscopic Latarjet procedure has provided reliable results in the treatment of anterior shoulder instability. However, this procedure remains technically challenging and is related to several complications. The morphology of the coracoid and the glenoid are inconsistent. Inadequate coracoid and glenoid preparing may lead to mismatching between their surfaces. Inadequate screws lengthening and orientation are a major concern. Too long screws can lead to suprascapular nerve injuries or hardware irritation, whereas too short screws can lead to nonunions, fibrous unions or migration of the bone block...
October 12, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Bum-Sik Lee, Seong-Il Bin, Jong-Min Kim, Jae Hyan Kim, Eic Ju Lim
PURPOSE: To determine the relationship between preoperative subluxation of the original menisci and postoperative graft subluxation after lateral meniscal allograft transplantation (MAT). METHODS: Fourteen patients who underwent isolated lateral MATs in meniscus-deficient knees with a low-grade chondral lesion (≤ICRS grade 2) were assessed. Lateral subluxation of the native meniscus before meniscectomy and those of remaining meniscal tissue before MAT were measured on mid-coronal MRI scans taken at each time point...
September 30, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Krishna Patel, Kathleyn Brandstetter
Allogenic implants are an effective alternative to autologous grafts in the reconstruction of facial defects. These implants are used to reconstruct a variety of bony and soft-tissue defects, including the frontal and temporal regions; internal orbit; infraorbital rim; malar, paranasal, and nasal regions; mandible; and chin. In comparison to their autologous counterparts, alloplastic materials are more readily available, lack donor-site morbidity, decrease surgical time and cost, and still have relatively good postoperative tissue tolerance...
October 2016: Facial Plastic Surgery: FPS
Arash Momeni, Ronald P Gruber
Rhinoplasty is perhaps the most complex cosmetic surgery procedure performed today. It is characterized by an intricate interplay between form and function, with patient satisfaction being dependent not only on improvement of nasal appearance but also resolution of preexisting airway symptoms. The prerequisite for successful execution of this challenging procedure is a thorough understanding of nasal anatomy and physiology. Hence, a thorough preoperative evaluation is at least as important and the surgical skill in performing the operation...
October 2016: Aesthetic Surgery Journal
Christian Deml, Peter Kaiser, Wouter F van Leeuwen, Magdalena Zitterl, Simon A Euler
BACKGROUND: The J-shaped bone graft procedure is one of the recommended methods to reconstruct significant glenoid rim defects. PURPOSE: To evaluate long-term (minimum 10-year) clinical outcomes and show further details of the remodeling effects on the articular cavity of the glenoid after J-shaped bone grafting. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: A total of 14 patients treated with a J-shaped bone graft procedure were observed clinically...
September 15, 2016: American Journal of Sports Medicine
Himanshu Charan, Julia Kinzel, Ulrich Glebe, Deepak Anand, Tayebeh Mirzaei Garakani, Leilei Zhu, Marco Bocola, Ulrich Schwaneberg, Alexander Böker
The research on protein-polymer conjugates by grafting from the surface of proteins has gained significant interest in the last decade. While there are many studies with globular proteins, membrane proteins have remained untouched to the best of our knowledge. In this study, we established the conjugate formation with a class of transmembrane proteins and grow polymer chains from the ferric hydroxamate uptake protein component A (FhuA; a β-barrel transmembrane protein of Escherichia coli). As the lysine residues of naturally occurring FhuA are distributed over the whole protein, FhuA was reengineered to have up to 11 lysines, distributed symmetrically in a rim on the membrane exposed side (outside) of the protein channel and exclusively above the hydrophobic region...
November 2016: Biomaterials
Gaël De Leener, Ferdinand Evoung-Evoung, Angélique Lascaux, Jeremy Mertens, Ana Gabriela Porras-Gutierrez, Nicolas Le Poul, Corinne Lagrost, Diana Over, Yann R Leroux, François Reniers, Philippe Hapiot, Yves Le Mest, Ivan Jabin, Olivia Reinaud
The immobilization of a copper calix[6]azacryptand funnel complex on gold-modified electrodes is reported. Two different methodologies are described. One is based on alkyne-terminated thiol self-assembled monolayers. The other relies on the electrografting of a calix[4]arene platform bearing diazonium functionalities at its large rim and carboxylic functions at its small rim, which is post-functionalized with alkyne moieties. In both cases, the CuAAC electroclick methodology proved to be the method of choice for grafting the calix[6]azacryptand onto the monolayers...
October 5, 2016: Journal of the American Chemical Society
Qi Ma, Jinping Song, Sufang Zhang, Meifang Wang, Yong Guo, Chuan Dong
β-Cyclodextrin-grafted citrate was used for the first time as a stabilizer and reducer to prepare silver nanoparticles (AgNPs). The as-synthesized AgNPs were further characterized by UV-vis absorption spectroscopy, powder X-ray diffraction spectroscopy, and transmission electron microscopy. The results show that the presence of riboflavin caused severe aggregation of the nanoparticles, thereby inducing a colour change from yellow to red. (1)H NMR further verified the formation of non-inclusion complexes between riboflavin and β-cyclodextrin-grafted citrate...
August 24, 2016: Colloids and Surfaces. B, Biointerfaces
Kyung-Soon Park, Jong-Keun Seon, Keun-Bae Lee, Sung-Kyu Kim, Chee-Ken Chan, Taek-Rim Yoon
BACKGROUND: This study aims at determining the average long-term result of revision total hip arthroplasty (THA) using the acetabular reinforcement ring with a hook (ARRH) and bone grafting in severe acetabular bony defect. Expected 15-year survival of ARRH in revision THA is included in the study. METHODS: Retrospective review of 48 patients (48 hips) with follow-up duration of average 11.4 years (range, 6.1-21.4 years) was conducted. At each follow-up, Harris hip score was used to assess functional outcome, and radiographic acetabular component osteolysis was measured by DeLee and Charnley classification...
July 21, 2016: Journal of Arthroplasty
Annelyse C Ballin, Haena Kim, Elizabeth Chance, Richard E Davis
Surgical refinement of the wide nasal tip is challenging. Achieving an attractive, slender, and functional tip complex without destabilizing the lower nasal sidewall or deforming the contracture-prone alar rim is a formidable task. Excisional refinement techniques that rely upon incremental weakening of wide lower lateral cartilages (LLC) often destabilize the tip complex and distort tip contour. Initial destabilization of the LLC is usually further exacerbated by "shrink-wrap" contracture, which often leads to progressive cephalic retraction of the alar margin...
August 2016: Facial Plastic Surgery: FPS
Zachary T Sharfman, Eyal Amar, Thomas Sampson, Ehud Rath
The importance of the acetabular labrum has been well documented for the health and function of the hip joint. Labral reconstruction has proven effective but often requires the use of a cadaveric allograft or auto graft from the fascia lata or gracilis. The indirect head of the rectus femoris is in close proximity with the anterior superior acetabulum, which is the most common site of labral tears. Using the indirect head of the rectus femoris as a local graft minimizes surgical invasiveness by mitigating the need to harvest the graft from a different location, in case of an autograft, and by minimizing donor site morbidity and damage to local tissues...
April 2016: Arthroscopy Techniques
Esther A Groeneveld-van Beek, Jack Parker, Jessica T Lie, Vincent Bourgonje, Lisanne Ham, Korine van Dijk, Jacqueline van der Wees, Gerrit R J Melles
PURPOSE: To describe and compare 2 preparation techniques for Bowman layer (BL) grafts for use in BL transplantation. METHODS: A retrospective evaluation of the 2 methods for preparing BL grafts was performed, that is, BL graft preparation from donor globes not eligible for penetrating keratoplasty or endothelial keratoplasty (technique I, n = 36) and BL graft preparation from previously excised corneoscleral buttons (technique II, n = 36) that could not be used for PK or had been denuded of Descemet membrane and endothelium for Descemet membrane endothelial keratoplasty graft preparation...
June 29, 2016: Cornea
J Pogorzelski, S Braun, A B Imhoff, K Beitzel
OBJECTIVE: Treatment of posterior shoulder instability with increased retroversion of the glenoid using open-wedge osteotomy of the glenoid neck stabilized with an autologous bone block. INDICATIONS: Symptomatic, atraumatic posterior shoulder instability with increased retroversion (>20°) of the glenoid and previously failed conservative or surgical treatment. CONTRAINDICATIONS: General contraindications against surgery. Relative contraindications: osteoporosis, nicotine abuse, or suspected patient noncompliance...
June 29, 2016: Operative Orthopädie und Traumatologie
Beata Korchowiec, Jacek Korchowiec, Monika Orlof-Naturalna, Jean-Bernard Regnouf de Vains, Ewa Rogalska
The interaction of two antibacterial calixarene derivatives with cholesterol, a eukaryotic cell membrane lipid, was investigated with the aim to get more insight in the potential advers effects on our cells. The derivatives used had one or two nalidixic acid arms grafted on the lower rim of the calixarene aromatic crown. Monomolecular films spread at the air-water interface were used as model lipid membranes. Pure cholesterol and pure calixarene derivatives, as well as binary cholesterol - calixarene derivative mixtures were studied using surface pressure measurements, polarization-modulation infrared reflection absorption spectroscopy and molecular dynamics simulations...
September 1, 2016: Colloids and Surfaces. B, Biointerfaces
Ergin Yucel, Murat Sahin Alagoz, Guler Gamze Eren, Emrah Kagan Yasar, Hakki Hayrettin Izmirli, Gokhan Duruksu, Serkan Isgoren, Bahar Muezzinoglu, Erdal Karaoz
OBJECTIVE: Chondrocutaneous composite grafts figure among the reconstruction alternatives for alar rim defects resulting from tumor resection and trauma. The major problem with composite grafts is the limited graft survival area. In the present study, the authors aimed to increase the survival area of composite grafts by utilizing the ability of stem cells to promote neovascularization which is crucial in composite graft viability. METHODS: The study included 36 adult Wistar Albino rats, which were allocated to 6 groups...
July 2016: Journal of Craniofacial Surgery
Jung-Ju Kim, Frank Schwarz, Hyun Young Song, YoonMi Choi, Kyung-Rim Kang, Ki-Tae Koo
OBJECTIVES: This study aimed to evaluate the dynamics of newly bone formation and dimensional change in diseased extraction sockets using Bio-Oss(®) Collagen with or without a collagen membrane. MATERIAL AND METHODS: In six beagle dogs, right and left 3rd and 4th mandibular premolars were hemisected and the distal roots were removed. Combined endodontic-periodontic lesions were induced in all sites using black silk, collagen sponge, endodontic files, and application of Porphyromonas gingivalis...
May 18, 2016: Clinical Oral Implants Research
Ivan Hadad, John G Meara, Carolyn R Rogers-Vizena
Aplasia cutis congenita (ACC) is a rare condition often presenting as an absent area of cutaneous scalp. The calvarium and dura may also be affected. Scalp reconstruction with tissue expansion is often needed for large defects. Patients involving deficient calvarial bone present a dilemma for the reconstructive surgeon, because bone graft donor sites are limited in young children.A thick, bony rim has been noted to form around the periphery of scalp tissue expanders. The authors present a series of 3 patients with ACC for whom this bony hyperostosis was used as donor particulate bone graft at the time of scalp tissue expansion...
June 2016: Journal of Craniofacial Surgery
Dong Hyun Kim, Jaeyoung Kim, Hyun Jeong Jeong, Hyun Ju Lee, Mee Kum Kim, Won Ryang Wee
BACKGROUND: Xenocorneal transplantation is one of the solutions for shortage of donor cornea, and remarkable advances have been made in pig-to-rhesus studies from the immunological perspective. Most successful preclinical trials have been carried out with corneas of the Seoul National University (SNU) miniature pig (SNU pig, genetically unmodified) as donor tissues; however, there has been no biophysico-functional evaluation of the SNU pig cornea as a substitute for human cornea. The purpose of this study was to investigate the biophysical and functional compatibility of SNU pig cornea for use in human clinical trials...
May 2016: Xenotransplantation
We Fong Siah, Andre S Litwin, Charles Nduka, Raman Malhotra
PURPOSE: To report outcomes and complications of periorbital autologous fat grafting (AFG) in improving volume loss-related symmetry and function in facial nerve palsy patients and to assess patient satisfaction. METHODS: A retrospective, noncomparative review of all facial nerve palsy patients who underwent periorbital AFG at single center over a 4-year period. Two independent graders objectively assessed standard photographs for any change in volume loss and symmetry: pre- and postoperative periods (early, 0-2 months; intermediate, 3-9 months; and late, >10 months)...
May 3, 2016: Ophthalmic Plastic and Reconstructive Surgery
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