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https://www.readbyqxmd.com/read/29783272/tendon-healing-in-bone-tunnel-after-human-anterior-cruciate-ligament-reconstruction-a-systematic-review-of-histological-results
#1
Hongbin Lu, Can Chen, Shanshan Xie, Yifu Tang, Jin Qu
Most studies concerning to tendon healing and incorporation into bone are mainly based on animal studies due to the invasive nature of the biopsy procedure. The evidence considering tendon graft healing to bone in humans is limited in several case series or case reports, and therefore, it is difficult to understand the healing process. A computerized search using relevant search terms was performed in the PubMed, EMBASE, Scopus, and Cochrane Library databases, as well as a manual search of reference lists. Searches were limited to studies that investigated tendon graft healing to bone by histologic examination after anterior cruciate ligament (ACL) reconstruction with hamstring...
May 21, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29781821/basic-science-and-clinical-application-of-reamed-sources-for-autogenous-bone-graft-harvest
#2
Thomas F Higgins, Lucas S Marchand
Autologous bone graft remains the only clinically available source of graft material with osteogenic, osteoinductive, and osteoconductive properties. Although iliac crest autologous bone graft has long served as the benchmark, reamed autogenous bone graft offers several advantages. Reamed autograft has a biochemical and cellular profile that is at least equivalent, and perhaps superior, to that of iliac crest autograft. In addition, larger volumes of reamed autograft can be obtained via less-invasive techniques, giving surgeons an accessible source of mesenchymal stem cells that can be reliably and repeatedly harvested...
May 16, 2018: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/29781812/pim-2-protein-kinase-negatively-regulates-t-cell-responses-in-transplantation-and-tumor-immunity
#3
Anusara Daenthanasanmak, Yongxia Wu, Supinya Iamsawat, Hung D Nguyen, David Bastian, MengMeng Zhang, M Hanief Sofi, Shilpak Chatterjee, Elizabeth G Hill, Shikhar Mehrotra, Andrew S Kraft, Xue-Zhong Yu
PIM kinase family members play a crucial role in promoting cell survival and proliferation via phosphorylation of their target substrates. In this study, we investigated the role of the PIM kinases with respect to T cell responses in transplantation and tumor immunity. We found that the PIM-2 isoform negatively regulated T cell responses to alloantigen, in contrast to the PIM-1 and PIM-3 isoforms, which acted as positive regulators. T cells deficient in PIM-2 demonstrated increased T cell differentiation toward Th1 subset, proliferation, and migration to target organs after allogeneic bone marrow transplantation, resulting in dramatically accelerated graft-versus-host disease (GVHD) severity...
May 21, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29781768/guided-bone-regeneration-and-implant-placement-in-association-with-a-coronally-positioned-palatal-sliding-flap-a-17-year-follow-up-case-report
#4
Carlo Maiorana, Pier Paolo Poli, Mario Beretta
The aim of the present case report was to show the 17-year hard and soft tissues stability of guided bone regeneration procedure associated with dental implants insertion. A 52-year-old male patient presented with a partial edentulism in the upper right maxilla. A graft consisting of deproteinized bovine bone mineral and autogenous bone stabilized by a non-resorbable expanded polytetrafluoroethylene membrane was used to reconstruct the missing bone applying the biological principles of guided bone regeneration...
May 21, 2018: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29781248/the-role-of-3d-printing-in-treating-craniomaxillofacial-congenital-anomalies
#5
REVIEW
Christopher D Lopez, Lukasz Witek, Andrea Torroni, Roberto L Flores, David B Demissie, Simon Young, Bruce N Cronstein, Paulo G Coelho
Craniomaxillofacial congenital anomalies comprise approximately one third of all congenital birth defects and include deformities such as alveolar clefts, craniosynostosis, and microtia. Current surgical treatments commonly require the use of autogenous graft material which are difficult to shape, limited in supply, associated with donor site morbidity and cannot grow with a maturing skeleton. Our group has demonstrated that 3D printed bio-ceramic scaffolds can generate vascularized bone within large, critical-sized defects (defects too large to heal spontaneously) of the craniomaxillofacial skeleton...
May 20, 2018: Birth Defects Research
https://www.readbyqxmd.com/read/29780843/adjustable-versus-fixed-loop-devices-for-femoral-fixation-in-acl-reconstruction-an-in-vitro-full-construct-biomechanical-study-of-surgical-technique-based-tibial-fixation-and-graft-preparation
#6
Patrick A Smith, Marina Piepenbrink, Shelby K Smith, Samuel Bachmaier, Asheesh Bedi, Coen A Wijdicks
Background: Femoral suspensory fixation for anterior cruciate ligament (ACL) reconstruction has evolved from fixed- to adjustable-loop devices. However, there are still controversies regarding undesired lengthening of adjustable-loop devices. Hypothesis: Adjustable-loop fixation will achieve similar elongation to that of fixed-loop devices, and intraoperative preconditioning will reduce initial elongation for adjustable-loop constructs. Study Design: Controlled laboratory study...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29779364/swing-door-overlay-tympanoplasty-surgical-technique-and-outcomes
#7
So Young Park, Hyuk Jae Lee, Myung Joo Shim, Dong Kee Kim, Byung Do Suh, Shi Nae Park
Objectives: The classical overlay tympanoplasty is technically difficult with some disadvantages and thus less popular. However, it is particularly useful for large, anterior perforations. In this study, we describe the technique of a modified overlay graft in the tympanoplasty coined as the swing-door overlay tympanoplasty and report its outcomes. Methods: Retrospective review of patients undergoing the swing-door overlay tympanoplasty at a tertiary referral center between 2003 and 2016 was performed...
May 22, 2018: Clinical and Experimental Otorhinolaryngology
https://www.readbyqxmd.com/read/29779220/human-intrabony-defect-regeneration-with-micro-grafts-containing-dental-pulp-stem-cells-a-randomized-controlled-clinical-trial
#8
Francesco Ferrarotti, Federica Romano, Mara Noemi Gamba, Andrea Quirico, Marta Giraudi, Martina Audagna, Mario Aimetti
AIM: The goal of this study was to evaluate if dental pulp stem cells (DPSCs) delivered into intrabony defects in a collagen scaffold would enhance the clinical and radiographic parameters of periodontal regeneration. MATERIALS AND METHODS: In this randomized controlled trial, 29 chronic periodontitis patients presenting one deep intrabony defect and requiring extraction of one vital tooth were consecutively enrolled. Defects were randomly assigned to test or control treatments which both consisted of the use of minimally invasive surgical technique...
May 19, 2018: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/29776890/burch-schneider-ring-associated-with-morselized-bone-allografts-survival-and-clinical-outcomes-after-acetabular-revision-surgery
#9
A Torres-Campos, J Albareda Albareda, B Seral García, N Blanco Rubio, J Gómez Vallejo, L Ezquerra Herrando
INTRODUCTION AND OBJECTIVES: Acetabular revision surgery is a challenge due to the appearance of bone defects that make primary fixation of implants difficult when extracting loosened components. Reinforcement rings, such as Burch-Schneider (BS), have been shown to be allies in moderate or severe bone defects. The objective of the study is to evaluate the results and survival of these types of implants in acetabular revision surgery in the medium follow-up. MATERIAL AND METHODS: Retrospective study on a cohort of 64 patients (67 replacements) with BS rings associated with morselized bone allografts in a 2 years minimum follow-up...
May 15, 2018: Revista Española de Cirugía Ortopédica y Traumatología
https://www.readbyqxmd.com/read/29776425/combined-application-of-latissimus-dorsi-myocutaneous-flap-and-iliac-bone-flap-in-the-treatment-of-chronic-osteomyelitis-of-the-lower-extremity
#10
Jihui Ju, Lei Li, Rong Zhou, Ruixing Hou
BACKGROUND: To evaluate the clinical efficacy and safety of latissimus dorsi myocutaneous flap (stage I) combined with iliac bone flap (stage II) in the treatment of chronic osteomyelitis of the lower extremity. METHODS: Clinical data of 18 patients undergoing latissimus dorsi myocutaneous flap in combination with iliac bone flap grafting were retrospectively analyzed. Among them, 2 patients developed chronic osteomyelitis of the lower segment of the femur, 4 were diagnosed with chronic osteomyelitis of the tibial plateau, and 12 with chronic osteomyelitis of the lower segment of the tibia...
May 18, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29775983/classification-and-microvascular-flap-selection-for-anterior-cranial-fossa-reconstruction
#11
James D Vargo, Wojciech Przylecki, Paul J Camarata, Brian T Andrews
BACKGROUND:  Microvascular reconstruction of the anterior cranial fossa (ACF) creates difficult challenges. Reconstructive goals and flap selection vary based on the defect location within the ACF. This study evaluates the feasibility and reliability of free tissue transfer for salvage reconstruction of low, middle, and high ACF defects. METHODS:  A retrospective review was performed. Reconstructions were anatomically classified as low (anterior skull base), middle (frontal bar/sinus), and high (frontal bone/soft tissue)...
May 18, 2018: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/29774969/combined-effect-of-parathyroid-hormone-and-strontium-ranelate-on-bone-healing-in-ovariectomized-rats
#12
Funda Göker, Selim Ersanlı, Volkan Arısan, Erdal Cevher, Emine Elif Güzel, Halim İşsever, Beyhan Ömer, Gülay Durmuş Altun, Deniz Morina, Tuğba Ekiz Yılmaz, Elmire Dervişoğlu, Massimo Del Fabbro
OBJECTIVE: Parathyroid hormone (PTH) enhances bone healing. Strontium ranelate (SR) is an antiresorptive agent that increases bone formation. Reports about combined effects of PTH and SR on local bone regeneration in osteoporotic subjects are limited. We aimed at investigating the efficacy of PTH and SR for promoting new bone formation in critical sized defects of ovariectomized rats. MATERIALS AND METHODS: PTH- and/or SR-containing poloxamer implant tablets with/without chitosan microparticles were delivered locally to calvarial defects of 90 Wistar rats...
May 18, 2018: Oral Diseases
https://www.readbyqxmd.com/read/29773404/large-tibial-geode-which-developed-several-years-after-a-left-medial-oxford-unicondylar-knee-arthroplasty-treated-with-curettage-and-bone-grafting
#13
Matthew K Curran, James R Murray
BACKGROUND: Tibial geodes are rare, and usually reported in association with rheumatoid arthritis. This case study reported the rare occurrence of a tibial geode in association with a left unicondylar knee arthroplasty (UKA). The patient, a 55-year-old male, was initially pleased with his UKA, which was performed at another institution. However, just over one year after the operation he began experiencing pain and discomfort. He did not present to the current institution until he was six years after UKA...
May 14, 2018: Knee
https://www.readbyqxmd.com/read/29773281/-cutaneous-and-systemic-t-cell-lymphoma-treated-with-haploidentical-bone-marrow-transplantation
#14
M Méchineaud, M Mercier, Y Le Corre, A Croué, N Ifrah, L Martin
BACKGROUND: Herein, we report a case of systemic cutaneous T-cell lymphoma refractory to standard therapy, the course of which resulted in haplo-identical bone marrow grafting. PATIENTS AND METHODS: A 53-year-old woman consulted for facial erythema with infiltration, keratotic lesions on the trunk, and adenopathies measuring around 1cm on the axilla and inguinal folds. A diagnosis was made of Sézary syndrome (SS), a leukaemic form of epidermotropic cutaneous T-cell lymphoma...
May 14, 2018: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/29772271/pain-management-after-bone-reconstruction-surgery-using-an-analgesic-bone-cement-a-functional-non-invasive-in-vivo-study-using-gait-analysis
#15
Manon Dupleichs, Martial Masson, Olivier Gauthier, Maeva Dutilleul, Jean-Michel Bouler, Elise Verron, Pascal Janvier
Postoperative pain following bone reconstruction is a serious complication that could jeopardize the global success of a surgery. This pain must be controlled and minimized during the first 3-4 postoperative days to prevent it from becoming chronic. In this study, a critical-size bone defect was created at the femoral distal end of rats and filled by an injectable calcium phosphate cement (CPC) loaded or not with local anesthetics (bupivacaine or ropivacaine). A functional evaluation of the gait was performed using the CatWalk system to compare the postoperative pain relief enhanced by the different CPCs after such a bone filling surgery...
May 14, 2018: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/29771732/maxillary-sinus-floor-augmentation-with-synthetic-bone-substitutes-compared-with-other-grafting-materials-a-systematic-review-and-meta-analysis
#16
Thomas Starch-Jensen, Arne Mordenfeld, Jonas Peter Becktor, Simon Storgård Jensen
OBJECTIVE: To test the hypotheses of no differences in implant treatment outcome after maxillary sinus floor augmentation (MSFA) with synthetic bone substitutes (SBS) compared with other grafting materials applying the lateral window technique. MATERIALS AND METHODS: A MEDLINE/PubMed, Embase and Cochrane Library search in combination with hand-search of selected journals was conducted. RESULTS: Five randomized controlled trials with low risk of bias fulfilled the inclusion criteria...
May 15, 2018: Implant Dentistry
https://www.readbyqxmd.com/read/29770879/no-difference-in-the-graft-shift-between-a-round-and-a-rounded-rectangular-femoral-tunnel-for-anterior-cruciate-ligament-reconstruction-an-experimental-study
#17
Yasushi Takata, Junsuke Nakase, Takeshi Oshima, Kengo Shimozaki, Kazuki Asai, Hiroyuki Tsuchiya
INTRODUCTION: We developed a novel technique of creating a rounded rectangular femoral bone tunnel for anatomical, single-bundle, autologous hamstring tendon anterior cruciate ligament (ACL) reconstruction. Although this tunnel has many advantages, its non-circular shape has raised concerns regarding excessive graft shift within the bone tunnel. This study aimed to compare the graft shift between round and rounded rectangular tunnels using a graft diameter tester for simulating the femoral bone tunnel...
May 16, 2018: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29770578/effect-of-silicon-doped-calcium-phosphate-bone-grafting-materials-on-bone-regeneration-and-osteogenic-marker-expression-after-implantation-in-the-ovine-scapula
#18
Christine Knabe, Doaa Adel-Khattab, Wolf-Dietrich Hübner, Fabian Peters, Tom Knauf, Barbara Peleska, Dirk Barnewitz, Antje Genzel, Roderik Kusserow, Florian Sterzik, Michael Stiller, Christian Müller-Mai
Compared to the currently clinically available bone grafting materials for alveolar ridge augmentation, there is a great demand for bioactive bone substitutes with higher resorbability, which enhance osteogenesis at the same time. This has prompted the development of a silicon-doped rapidly resorbable calcium alkali orthophosphate (Si-CAOP) and silicon-doped β-tricalcium phosphate (Si-TCP). This study evaluated the effect of these two particulate graft materials as compared to the currently clinically used β-TCP on bone formation and osteogenic marker expression after 2 weeks, 1, 3, 6, 12, and 18 months of implantation in critical size defects in the sheep scapula...
May 16, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29769782/graft-versus-host-disease-presenting-as-fibrosing-alopecia-in-a-pattern-distribution-a-model-for-pathophysiological-understanding-of-cicatricial-pattern-hair-loss
#19
Hudson Dutra Rezende, Maria Fernanda Reis Gavazzoni Dias, Ralph Michel Trüeb
A case of cutaneous graft versus host disease (GvHD) presenting as fibrosing alopecia in a pattern distribution (FAPD) is discussed, possibly providing a mechanistic model for a better understanding of the pathogenic events underlying cicatricial pattern hair loss. The implication of a follicular inflammation and fibrosis associated with patterned hair loss has emerged from several independent studies. Eventually, Zinkernagel and Trüeb reported a peculiar type of cicatricial pattern hair loss with histopathological features consistent with lichen planopilaris (LPP) associated with androgenetic alopecia (AGA)...
March 2018: International Journal of Trichology
https://www.readbyqxmd.com/read/29769146/finite-element-analysis-of-the-tibial-bone-graft-in-cementless-total-knee-arthroplasty
#20
Koji Totoribe, Etsuo Chosa, Go Yamako, Hiroaki Hamada, Koki Ouchi, Shutaro Yamashita, Gang Deng
BACKGROUND: Achieving stability of the tibial implant is essential following cementless total knee arthroplasty with bone grafting. We investigated the effects of bone grafting on the relative micromotion of the tibial implant and stress between the tibial implant and adjacent bone in the immediate postoperative period. METHODS: Tibial implant models were developed using a nonlinear, three-dimensional, finite element method. On the basis of a preprepared template, several bone graft models of varying sizes and material properties were prepared...
May 16, 2018: Journal of Orthopaedic Surgery and Research
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