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https://www.readbyqxmd.com/read/28933329/-mid-term-to-long-term-results-of-revision-total-hip-arthroplasty-using-the-oval-shaped-acetabular-cup-tc-type
#1
E Šťastný, T Trč, J Frýdl, Z Kopečný, T Philippou, J Lisý
INTRODUCTION The purpose of our paper is to evaluate the mid-term to long-term results and to confirm the basic criteria of a high-quality revision implant: safe bridging of bone defects, achievement of reliable primary fixation of revision acetabular cup, achievement of good secondary stability with documentable osteointegration of cup and demonstration of remodelling of transplanted bone tissue in the area of defects and in spaces between the implant ribs. MATERIAL AND METHODS Altogether 36 patients (38 cups) were evaluated who had undergone revision hip arthroplasty in the period from 2004 to 2010...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28932876/effective-patellofemoral-joint-stabilization-and-low-complication-rates-using-a-hardware-free-mpfl-reconstruction-technique-with-an-intra-operative-adjustment-of-the-graft-tension
#2
Lars V von Engelhardt, Torsten Fuchs, Pia Weskamp, Joerg Jerosch
PURPOSE: Even if medial patellofemoral ligament (MPFL) reconstruction is a proven method, complications such as implant loosening, patella fractures, recurrent luxations, knee pain or knee stiffness are frequently described. Besides a correct tunnel positioning and implant-specific complications, this might be caused by difficulties with an appropriate graft tensioning. The study presented here is a necessary first step in exploring our technique of a double-limbed, hardware-free MPFL reconstruction, which provides another way to test and adjust the graft tension before permanent fastening...
September 20, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28932751/return-to-sports-and-recurrences-after-arthroscopic-anterior-shoulder-stabilization-in-martial-arts-athletes
#3
Maximiliano Ranalletta, Luciano A Rossi, Adrian Sirio, Fernando Diaz Dilernia, Agustin Bertona, Gastón D Maignon, Santiago L Bongiovanni
BACKGROUND: The high demands to the glenohumeral joint and the violent shoulder blows experienced during martial arts (MA) could compromise return to sports and increase the recurrence rate after arthroscopic stabilization for anterior shoulder instability in these athletes. PURPOSE: To report the functional outcomes, return to sports, and recurrences in a series of MA athletes with anterior shoulder instability treated with arthroscopic stabilization with suture anchors...
September 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28932701/mr-imaging-of-the-traumatic-triangular-fibrocartilaginous-complex-tear
#4
REVIEW
Alex W H Ng, James F Griffith, Cindy S Y Fung, Ryan K L Lee, Cina S L Tong, Clara W Y Wong, Wing Lim Tse, Pak Cheong Ho
Triangular fibrocartilage complex is a major stabilizer of the distal radioulnar joint (DRUJ). However, triangular fibrocartilage complex (TFCC) tear is difficult to be diagnosed on MRI for its intrinsic small and thin structure with complex anatomy. The purpose of this article is to review the anatomy of TFCC, state of art MRI imaging technique, normal appearance and features of tear on MRI according to the Palmar's classification. Atypical tear and limitations of MRI in diagnosis of TFCC tear are also discussed...
August 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28931738/biological-and-statistical-processes-jointly-drive-population-aggregation-using-host-parasite-interactions-to-understand-taylor-s-power-law
#5
Pieter T J Johnson, Mark Q Wilber
The macroecological pattern known as Taylor's power law (TPL) represents the pervasive tendency of the variance in population density to increase as a power function of the mean. Despite empirical illustrations in systems ranging from viruses to vertebrates, the biological significance of this relationship continues to be debated. Here we combined collection of a unique dataset involving 11 987 amphibian hosts and 332 684 trematode parasites with experimental measurements of core epidemiological outcomes to explicitly test the contributions of hypothesized biological processes in driving aggregation...
September 27, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28931464/the-interactive-effects-of-diclofop-methyl-and-silver-nanoparticles-on-arabidopsis-thaliana-growth-photosynthesis-and-antioxidant-system
#6
Xingxing Li, Mingjing Ke, Meng Zhang, W J G M Peijnenburg, Xiaoji Fan, Jiahui Xu, Zhenyan Zhang, Tao Lu, Zhengwei Fu, Haifeng Qian
Diclofop-methyl (DM), a common post-emergence herbicide, is frequently used in agricultural production. Silver nanoparticles (AgNPs) are one of the most widely used nanoparticles, and as such, have been detected and monitored in several environmental systems. Here we investigated the interactive effects of DM and AgNPs on the physiological morphology, photosynthesis and antioxidant system of Arabidopsis thaliana. Our results demonstrated that a 1.0 mg/L DM treatment had no significant effect on the fresh weight of plant shoots and the content of total chlorophyll and anthocyanin...
September 18, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28925568/the-fibular-meniscus-of-the-kangaroo-as-an-adaptation-against-external-tibial-rotation-during-saltatorial-locomotion
#7
Adrian C Miller, Martin A Cake, Natalie M Warburton
The kangaroo knee is, as in other species, a complex diarthrodial joint dependent on interacting osseous, cartilaginous and ligamentous components for its stability. While principal load bearing occurs through the femorotibial articulation, additional lateral articulations involving the fibula and lateral fabella also contribute to the functional arrangement. Several fibrocartilage and ligamentous structures in this joint remain unexplained or have been misunderstood in previous studies. In this study, we review the existing literature on the structure of the kangaroo 'knee' before providing a new description of the gross anatomical and histological structures...
September 19, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28924949/anatomic-ligament-consolidation-of-the-superior-acromioclavicular-ligament-and-the-coracoclavicular-ligament-complex-after-acute-arthroscopically-assisted-double-coracoclavicular-bundle-stabilization
#8
S Jobmann, J Buckup, C Colcuc, P P Roessler, E Zimmermann, K F Schüttler, R Hoffmann, F Welsch, T Stein
PURPOSE: The consolidation of the acromioclavicular (AC) and coracoclavicular (CC) ligament complex after arthroscopically assisted stabilization of acute acromioclavicular joint (ACJ) separation is still under consideration. METHODS: Fifty-five consecutive patients after arthroscopically assisted double-CC-bundle stabilization within 14 days after acute high-grade ACJ separation were studied prospectively. All patients were clinically analysed preoperatively (FU0) and post-operatively (FU1 = 6 months; FU2 = 12 months)...
September 18, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28924020/microindentation-a-tool-for-measuring-cortical-bone-stiffness-a-systematic-review
#9
M Arnold, S Zhao, S Ma, F Giuliani, U Hansen, J P Cobb, R L Abel, O Boughton
OBJECTIVES: Microindentation has the potential to measure the stiffness of an individual patient's bone. Bone stiffness plays a crucial role in the press-fit stability of orthopaedic implants. Arming surgeons with accurate bone stiffness information may reduce surgical complications including periprosthetic fractures. The question addressed with this systematic review is whether microindentation can accurately measure cortical bone stiffness. METHODS: A systematic review of all English language articles using a keyword search was undertaken using Medline, Embase, PubMed, Scopus and Cochrane databases...
September 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28923079/endoplasmic-reticulum-stress-cooperates-with-toll-like-receptor-ligation-in-driving-activation-of-rheumatoid-arthritis-fibroblast-like-synoviocytes
#10
Pawel A Kabala, Chiara Angiolilli, Nataliya Yeremenko, Aleksander M Grabiec, Barbara Giovannone, Desiree Pots, Timothy R Radstake, Dominique Baeten, Kris A Reedquist
BACKGROUND: Endoplasmic reticulum (ER) stress has proinflammatory properties, and transgenic animal studies of rheumatoid arthritis (RA) indicate its relevance in the process of joint destruction. Because currently available studies are focused primarily on myeloid cells, we assessed how ER stress might affect the inflammatory responses of stromal cells in RA. METHODS: ER stress was induced in RA fibroblast-like synoviocytes (FLS), dermal fibroblasts, and macrophages with thapsigargin or tunicamycin alone or in combination with Toll-like receptor (TLR) ligands, and gene expression and messenger RNA (mRNA) stability was measured by quantitative polymerase chain reaction...
September 18, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28922615/the-impact-of-incorporating-antimicrobials-into-implant-surfaces
#11
N J Hickok, I M Shapiro, A F Chen
With the increase in numbers of joint replacements, spinal surgeries, and dental implantations, there is an urgent need to combat implant-associated infection. In addition to stringent sterile techniques, an efficacious way to prevent this destructive complication is to create new implants with antimicrobial properties. Specifically, these implants must be active in the dental implant environment where the implant is bathed in the glycoprotein-rich salivary fluids that enhance bacterial adhesion, and propagation, and biofilm formation...
September 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28920546/blood-supply-and-vascularity-of-the-glenoid-labrum-its-clinical-implications
#12
Abduelmenem Alashkham, Abdulrahman Alraddadi, Paul Felts, Roger Soames
BACKGROUND: Tears of the glenoid labrum are common after dislocation of the glenohumeral joint. The outcome for healing or surgical reconstruction of the glenoid labrum relies on the extent of its vascularization. This study aims to evaluate the glenoid labrum blood supply and to determine its regional vascularity. MATERIALS AND METHODS: A total of 140 shoulders (30 male and 40 female cadavers) were examined: mean age 81.5 years, range 53-101 years. All blood vessels around the glenohumeral joint were dissected and recorded...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28918786/-treatment-of-meniscal-pathology
#13
Martin Wyman Rathcke, Martin Lind, Morten Ilum Boesen, Nis Nissen, Anders Ploug Boesen, Bjarne Mygind-Klavsen, Per Hölmich
The menisci play a major role in knee function regarding joint movement, stability, load distribution and load transmission. Injuries to the menisci cause pain, and meniscal tears are a common reason for patient referral. In Denmark, partial meniscectomy increased significantly until 2010, and several studies have questioned the long-term effect of meniscectomy as an overall procedure. A Danish national clinical guideline on knee meniscal pathology was published in May 2016, and this article is a short summary of updated knowledge on meniscal pathology and relevant conclusions from the guideline...
September 18, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28918784/-treatment-of-patellar-instability
#14
Martin Lind, Peter Faunø, Ole Gade Sørensen, Bjarne Mygind-Klavsen
First-time patellar luxation appears typically in teenagers and young adults below the age of 16 years, with a prevalence of 45/100,000/year. This luxation is treated with brief limited mobility in a bandage, and with a complementary physiotherapy if the mobility is influenced afterwards. Risk factors for patellar instability are patellofemoral dysplasia, hyperlaxity, patella alta and valgus malalignment in the knee joint. In case of repeated luxation the treatment is surgical, i.e. reconstruction of the medial patellofemoral ligament recreating the medial patella-stabilizing structures...
September 18, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28916837/primary-and-secondary-consequences-of-rotator-cuff-injury-on-joint-stabilizing-tissues-in-the-shoulder
#15
Hafizur Rahman, Eric Currier, Marshall Johnson, Rick Goding, Amy J Wagoner Johnson, Mariana Kersh
Rotator cuff tears are one of the primary causes of shoulder pain and dysfunction in the upper extremity accounting over 4.5 million physician visits per year with 250,000 rotator cuff repairs being performed annually in the United States. While the tear is often considered an injury to a specific tendon/tendons and consequently treated as such, there are secondary effects of rotator cuff tears that may have significant consequences for shoulder function. Specifically, rotator cuff tears have been shown to affect the joint cartilage, bone, the ligaments, as well as the remaining intact tendons of the shoulder joint...
September 16, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28914803/achieving-congestion-mitigation-using-distributed-power-control-for-spectrum-sensor-nodes-in-sensor-network-aided-cognitive-radio-ad-hoc-networks
#16
Long Zhang, Haitao Xu, Fan Zhuo, Hucai Duan
The data sequence of spectrum sensing results injected from dedicated spectrum sensor nodes (SSNs) and the data traffic from upstream secondary users (SUs) lead to unpredictable data loads in a sensor network-aided cognitive radio ad hoc network (SN-CRN). As a result, network congestion may occur at a SU acting as fusion center when the offered data load exceeds its available capacity, which degrades network performance. In this paper, we present an effective approach to mitigate congestion of bottlenecked SUs via a proposed distributed power control framework for SSNs over a rectangular grid based SN-CRN, aiming to balance resource load and avoid excessive congestion...
September 15, 2017: Sensors
https://www.readbyqxmd.com/read/28906300/isolated-dorsoradial-capsular-tear-of-the-thumb-metacarpophalangeal-joint-missed-diagnosis-and-the-management-of-delayed-presentation
#17
Yvette Godwin, Britt Ter Horst, Godwin Scerri
Isolated dorsoradial capsule injuries of the thumb metacarpophalangeal joint are different from those associated with collateral ligament disruption. Early suspicion of this rare injury is important because, if overlooked, ulnarward subluxation of extensor pollicis longus tendon can develop. Functionally, active thumb extension becomes impaired, and over the long term, a thumb Boutonniere's deformity becomes established. Joint hypermobility/instability may predispose to this injury. The 2 cases presented illustrate this through anatomic differences...
September 12, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28904967/foot-structure-in-boys-with-down-syndrome
#18
Ewa Puszczałowska-Lizis, Krzysztof Nowak, Jarosław Omorczyk, Tadeusz Ambroży, Przemysław Bujas, Leszek Nosiadek
INTRODUCTION AND AIM: Down syndrome (DS) is associated with numerous developmental abnormalities, some of which cause dysfunctions of the posture and the locomotor system. The analysis of selected features of the foot structure in boys with DS versus their peers without developmental disorders is done. MATERIALS AND METHODS: The podoscopic examination was performed on 30 boys with DS aged 14-15 years. A control group consisted of 30 age- and gender-matched peers without DS...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28903390/association-between-the-functional-polymorphism-ile31phe-in-the-aurka-gene-and-susceptibility-of-hepatocellular-carcinoma-in-chronic-hepatitis-b-virus-carriers
#19
Zhiyu Bao, Lei Lu, Xinyi Liu, Bingqian Guo, Yun Zhai, Yuanfeng Li, Yahui Wang, Bobo Xie, Qian Ren, Pengbo Cao, Yuqing Han, Weihua Jia, Minshan Chen, Xinqiang Liang, Xuan Wang, Yi-Xin Zeng, Fuchu He, Hongxing Zhang, Ying Cui, Gangqiao Zhou
Aurora kinase A (AURKA) is a serine threonine kinase which affects chromosomal separation and mitotic spindle stability through interaction with the centrosome during mitosis. Two functional nonsynonymous polymorphisms of the AURKA gene (Ile31Phe and Val57Ile) have been reported recently. We analyzed the association between the two polymorphisms and risk of the occurrence of hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC) in the Guangxi population consisting of 348 patients with HCC and 359 control subjects, and then validated the significant association in the Guangdong population consisting of 440 cases and 456 controls...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28902098/repair-of-the-thumb-ulnar-collateral-ligament-with-suture-tape-augmentation
#20
Anthony F De Giacomo, Steven S Shin
One of the most commonly injured structures of the thumb metacarpophalangeal (MCP) joint is the ulnar collateral ligament (UCL). An acute injury of this ligament is often amenable to primary repair. Despite the favorable outcomes of primary repair, the thumb is often restricted during initial healing of the ligament with immobilization and delayed rehabilitation. We present a novel technique to augment the repair of the UCL with suture tape to provide immediate biomechanical support and strength during the critical time of ligament healing...
September 8, 2017: Techniques in Hand & Upper Extremity Surgery
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