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https://www.readbyqxmd.com/read/28239357/increased-cell-proliferation-and-gene-expression-of-genes-related-to-bone-remodeling-cell-adhesion-and-collagen-metabolism-in-the-periodontal-ligament-of-unopposed-molars-in-growing-rats
#1
Domna Dorotheou, Vassiliki Farsadaki, Marie-Luce Bochaton-Piallat, Catherine Giannopoulou, Thanos D Halazonetis, Stavros Kiliaridis
Tooth eruption, the process by which teeth emerge from within the alveolar bone into the oral cavity, is poorly understood. The post-emergent phase of tooth eruption continues throughout life, in particular, if teeth are not opposed by antagonists. The aim of the present study was to better understand the molecular processes underlying post-emergent tooth eruption. Toward this goal, we removed the crowns of the maxillary molars on one side of the mouth of 14 young rats and examined gene expression patterns in the periodontal ligaments (PDLs) of the ipsilateral and contralateral mandibular molars, 3 and 15 days later...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28239033/hertwig-s-epithelial-root-sheath-cells-contribute-to-formation-of-periodontal-ligament-through-epithelial-mesenchymal-transition-by-tgf-%C3%AE
#2
Satoshi Itaya, Kyoko Oka, Kayoko Ogata, Shougo Tamura, Michiko Kira-Tatsuoka, Naoki Fujiwara, Keishi Otsu, Eichi Tsuruga, Masao Ozaki, Hidemitsu Harada
In tooth root development, periodontal ligament (PDL) and cementum are formed by the coordination with the fragmentation of Hertwig's epithelial root sheath (HERS) and the differentiation of dental follicle mesenchymal cells. However, the function of the dental epithelial cells after HERS fragmentation in the PDL is not fully understood. Here, we found that TGF-β regulated HERS fragmentation via epithelial-mesenchymal transition (EMT), and the fragmented epithelial cells differentiated into PDL fibroblastic cells with expressing of PDL extracellular matrix (ECM)...
2017: Biomedical Research
https://www.readbyqxmd.com/read/28238964/pullout-strength-of-a-novel-hybrid-fixation-technique-tape-locking-screw-%C3%A2-in-soft-tissue-acl-reconstruction-a-biomechanical-study-in-human-and-porcine-bone
#3
Mark Ayzenberg, Dillon Arango, Grigory E Gershkovich, Praveen S Samuel, Minn Saing
INTRODUCTION: A novel hybrid anterior cruciate ligament(ACL) reconstruction technique known as Tape Locking Screw™ (TLS)is gaining popularity. Utilizing a suspension-type construct in conjunction with an interference screw,thistechnique has demonstrated successful initial clinical results with the use of quadruple hamstring graft. However, there is currently limited data available on the biomechanical strength of this fixation. This study investigates the pullout strength of theconstructin human distal femora as well as in a porcine model...
February 23, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28238678/penile-lengthening-girth-and-size-preservation-at-the-time-of-penile-prosthesis-insertion
#4
REVIEW
Henry Tran, Robert Goldfarb, Anika Ackerman, Robert J Valenzuela
INTRODUCTION: Penile prosthetic devices are the gold standard treatment of medication-refractory erectile dysfunction. Inflatable penile prosthetic (IPP) devices have been available and used for more than four decades. Oftentimes, medical conditions causing erectile dysfunction also cause penile shortening, causing decreased patient quality of life. AIM: To identify and review all available penile lengthening procedures that can be performed at time of IPP insertion...
February 23, 2017: Sexual Medicine Reviews
https://www.readbyqxmd.com/read/28238143/electrospun-nanofiber-scaffolds-and-their-hydrogel-composites-for-the-engineering-and-regeneration-of-soft-tissues
#5
Ohan S Manoukian, Rita Matta, Justin Letendre, Paige Collins, Augustus D Mazzocca, Sangamesh G Kumbar
Electrospinning has emerged as a simple, elegant, and scalable technique that can be used to fabricate polymeric nanofibers. Pure polymers as well as blends and composites of both natural and synthetic ones have been successfully electrospun into nanofiber matrices for many biomedical applications. Tissue-engineered medical implants, such as polymeric nanofiber scaffolds, are potential alternatives to autografts and allografts, which are short in supply and carry risks of disease transmission. These scaffolds have been used to engineer various soft tissues, including connective tissues, such as skin, ligament, and tendon, as well as nonconnective ones, such as vascular, muscle, and neural tissue...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28237617/safe-dissection-of-high-paraaortic-lymph-nodes-superior-to-the-renal-vein-in-ovarian-primary-peritoneal-or-fallopian-tube-cancer-by-the-komiyama-s-maneuver-a-modification-of-kocher-s-maneuver
#6
Shinichi Komiyama, Megumi Manrai, Rena Takahashi, Chiaki Takeya
OBJECTIVE: High paraaortic lymph nodes superior to the renal vein are often involved by metastasis from advanced ovarian cancer, but are difficult to dissect. We developed a novel surgical technique for removing these nodes. METHODS: The ascending colon is displaced from the right paracolic gutter. A retroperitoneal incision is made cranially from the ileocecal region along Monk's white line (fusion fascia) dorsal to the ascending colon. Incising the fusion fascia toward the root of the right renal vein from inside Gerota's fascia allows separation of the right kidney and mobilization of the ascending colon, partly exposing the inferior vena cava...
February 22, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28236624/coronal-malalignment-in-the-adult-knee
#7
Carlos Uquillas, William Rossy, Eric Strauss
Coronal plane deformity in the adult patient is a complex clinical problem. Once the hip, knee, and ankle joint centers lose collinerarity, the knee is exposed to abnormal loads across its tibiofemoral compartments, leading to early degenerative changes. Malalignment can coexist with arthrosis and ligamentous instability. High tibial osteotomy and distal femoral osteotomy have been useful tools to realign the adult knee. They can be performed along with ligament reconstruction and cartilage restoration procedures with high success rates...
January 2017: Bulletin of the Hospital for Joint Diseases
https://www.readbyqxmd.com/read/28236443/repeatability-of-strain-magnitude-and-strain-rate-measurements-in-the-periodontal-ligament-using-fibre-bragg-gratings-an-ex-vivo-study-in-a-swine-model
#8
Dan L Romanyk, Raymond Guan, Paul W Major, Christopher R Dennison
Measurement of periodontal ligament (PDL) strain in an ex vivo or in vivo setting of a complete tooth-PDL-bone complex (TPBC) has yet to be achieved in the literature. The objective of this study was to investigate inter- and intra-TPBC PDL strain measurement using fibre Bragg grating (FBG) strain sensors. Second and third premolars from the left and the right side of four swine mandibles were removed to yield sixteen TPBC samples. Samples were secured in a miniature load-frame equipped with a digital actuator used to apply apical-directed displacement to the tooth...
February 7, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28236179/post-operative-outcomes-and-complications-of-suspensory-loop-fixation-device-versus-hook-plate-in-acute-unstable-acromioclavicular-joint-dislocation-a-systematic-review-and-meta-analysis
#9
REVIEW
Alisara Arirachakaran, Manusak Boonard, Peerapong Piyapittayanun, Wichan Kanchanatawan, Kornkit Chaijenkij, Akom Prommahachai, Jatupon Kongtharvonskul
BACKGROUND: Treatment of acute (≤3 weeks) acromioclavicular joint dislocation type III-VI is still controversial. Currently, the two modern techniques that are widely used are hook plate (HP) fixation and coracoclavicular ligament fixation using a suspensory loop device that consists of either a tightrope (single or double), endo-button (single or double), or synthetic ligament and absorbable polydioxansulfate sling. MATERIALS AND METHODS: This systematic review was conducted according to the PRISMA guidelines...
February 25, 2017: Journal of Orthopaedics and Traumatology: Official Journal of the Italian Society of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/28235717/stratified-nanoporous-ptti-alloys-for-hydrolysis-of-ammonia-borane
#10
Qiuxia Zhou, Caixia Xu
Stratified nanoporous PtTi (SNP-PtTi) alloys with bimodal size distributions and different components are successfully prepared by selectively dissolving Al atoms followed by removing part of Ti atoms from the PtTiAl precursor alloy. The as-made PtTi alloys have stratified nanoporous architecture with the first order ligaments around 50nm and the second order smaller ligaments around 6nm. The SNP-PtTi alloys with different bimetallic ratios exhibit much higher catalytic activity for the hydrolysis of ammonia borane than NP-Pt catalyst...
February 16, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28235698/the-effect-of-anterior-longitudinal-ligament-resection-on-lordosis-correction-during-minimally-invasive-lateral-lumbar-interbody-fusion-biomechanical-and-radiographic-feasibility-of-an-integrated-spacer-plate-interbody-reconstruction-device
#11
Choll Kim, Jonathan A Harris, Aditya Muzumdar, Saif Khalil, Joseph A Sclafani, Kamshad Raiszadeh, Brandon S Bucklen
BACKGROUND: Lateral lumbar interbody fusion is powerful for correcting degenerative conditions, yet sagittal correction remains limited by anterior longitudinal ligament tethering. Although lordosis has been restored via ligament release, biomechanical consequences remain unknown. Investigators examined radiographic and biomechanical of ligament release for restoration of lumbar lordosis. METHODS: Six fresh-frozen human cadaveric spines (L3-S1) were tested: (Miller et al...
February 14, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28231648/evaluation-of-infection-after-anterior-cruciate-ligament-reconstruction-during-a-short-period
#12
Hee-June Kim, Hyun-Joo Lee, Jong-Chul Lee, Seung-Gi Min, Hee-Soo Kyung
Purpose: We encountered 7 cases (7.1%) of infection (5 deep and 2 superficial) in 98 cases of anterior cruciate ligament (ACL) reconstruction using hamstring autografts in a 17-month period. The aim of this study was to analyze the causes of infection and to introduce our treatment strategy. Materials and Methods: We investigated the shelf-life of the fixation implants, the order of surgery, previous knee surgery, infectious pathogen, treatment of infection, and results of treatment...
March 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28231647/outcome-of-acl-reconstruction-for-chronic-acl-injury-in-knees-without-the-posterior-horn-of-the-medial-meniscus-comparison-with-acl-reconstructed-knees-with-an-intact-medial-meniscus
#13
Kevin Syam, Devendra K Chouhan, Mandeep Singh Dhillon
Purpose: Cadaveric studies have shown that deficiency of the posterior horn of the medial meniscus (PHMM) increases strain on the anterior cruciate ligament (ACL) graft. However, its influence on the clinical and radiological outcome after ACL reconstruction is less discussed and hence evaluated in this study. Materials and Methods: This study included 77 cases of ACL reconstruction with a minimum 18-month follow-up. Of the 77 cases, 41 patients with intact menisci were compared clinically and radiologically with 36 patients with an injury to the PHMM that required various grades of meniscectomy...
March 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28231646/arthroscopic-control-for-safe-and-secure-seating-of-suspensory-devices-for-femoral-fixation-in-anterior-cruciate-ligament-reconstruction-using-three-different-techniques
#14
Seo Goo Kang, Yong Seuk Lee
Purpose: The purpose of this study was to evaluate the efficacy of our technique that allows direct visualization of seating of suspensory devices in anterior cruciate ligament (ACL) reconstruction. Materials and Methods: Three different suspensory devices (TightRope RT, RetroButton, and EndoButton) were used in ACL reconstruction using 3 different techniques (outside-in, anteromedial [AM] portal, and transtibial techniques). Positioning of a guiding material and seating pattern of the suspensory devices were evaluated according to the surgical technique and suspensory device used...
March 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28231645/the-effect-of-different-sagittal-angles-of-the-tibial-guide-on-aperture-widening-of-the-tibial-tunnel-during-modified-transtibial-anterior-cruciate-ligament-reconstruction-a-randomized-in-vivo-study
#15
Young Chan Kim, Tulyapruek Tawonsawatruk, Hyeong Hwa Woon, Ji Woong Yum, Myung Jin Shin, Rodolfo S Bravo, Kyung Wook Nha
Purpose: The effect of sagittal plane angle of the tibial tunnel on the severity of tibial intra-articular aperture expansion caused by iatrogenic re-reaming in anterior cruciate ligament (ACL) reconstruction using a modified transtibial technique is unknown. The purpose of this study was to compare the severity of intra-articular aperture widening at different angles (40°, 45°, and 50°) of the tibial guide (TG). Materials and Methods: Ninety-seven patients who underwent modified transtibial ACL reconstruction were randomly allocated to TG 40°, 45°, and 50° groups...
March 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28231644/mid-term-outcomes-of-anterior-cruciate-ligament-reconstruction-with-far-anteromedial-portal-technique
#16
Yoon Sang Jeon, Sung Wook Choi, Ju Hyun Park, Jae Sik Yoon, Jung Sub Shin, Myung Ku Kim
Purpose: The purpose of this study was to evaluate the mid-term outcomes of anatomic anterior cruciate ligament (ACL) reconstruction using two anteromedial (AM) portals by comparing with short-term follow-up results. Materials and Methods: Fifty patients who were treated by ACL reconstruction using a two AM portal technique were evaluated retrospectively. The follow-up period was at least 5 years. The mean follow-up period was 68.5±13.9 months. The mid-term clinical outcomes were compared with short-term (≥12 months) results...
March 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28231643/three-dimensional-reconstruction-computed-tomography-evaluation-of-the-tunnel-location-and-angle-in-anatomic-single-bundle-anterior-cruciate-ligament-reconstruction-a-comparison-of-the-anteromedial-portal-and-outside-in-techniques
#17
Kang-Il Kim, Sang Hak Lee, Chanil Bae, Sung Hae Bae
Purpose: The purpose of this study was to compare the geometry and position of the femoral tunnel between the anteromedial portal (AMP) and outside-in (OI) techniques after anatomic single-bundle anterior cruciate ligament (ACL) reconstruction. Materials and Methods: We evaluated 82 patients undergoing single-bundle ACL reconstruction with hamstring autografts using either the AMP (n=40) or OI (n=42) technique. The locations of the tunnel apertures were assessed by postoperative 3-dimensional computed tomography imaging...
March 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28231641/have-evolving-surgical-methods-improved-clinical-outcomes-after-anterior-cruciate-ligament-reconstruction
#18
EDITORIAL
Seong-Il Bin
No abstract text is available yet for this article.
March 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28230565/outcomes-of-transvaginal-high-uterosacral-ligaments-suspension-over-500-patient-single-center-study
#19
Rodolfo Milani, Matteo Frigerio, Alice Cola, Carlo Beretta, Federico Spelzini, Stefano Manodoro
BACKGROUND: Uterosacral ligament (USL) suspension is a safe and effective procedure in terms of anatomical, functional, and subjective outcomes for primary surgical treatment of prolapse. OBJECTIVES: There has been a renewed interest toward native tissue prolapse repair by vaginal route because of low cost and lack of mesh-related complications. Uterosacral ligaments are considered safe, effective, and durable as suspending structures for primary surgical repair of the apical compartment...
February 23, 2017: Female Pelvic Medicine & Reconstructive Surgery
https://www.readbyqxmd.com/read/28229574/athlete-presentations-and-sports-injury-frequencies-by-sport-branches-at-a-university-sports-medicine-clinic
#20
Bernard Tahirbegolli, Şensu Dinçer, Ömer B Gözübüyük, Ufuk Değirmenci, Safinaz Yildiz, Suphi Vehid
BACKGROUND: We aimed to investigate the profile of athletes by determining the branch of sports, type, and area of sustained sports injury, and the frequencies through athletes' presentations to the largest university clinic in one of the most crowded and athletepopulated cities of Turkey, Istanbul. MATERIALS AND METHODS: THE study population comprised 1302 athletes who presented to the sports medicine clinic between the dates of July 1st, 2014, and June 30th, 2015...
February 22, 2017: Journal of Sports Medicine and Physical Fitness
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