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https://www.readbyqxmd.com/read/29355742/intra-articular-synovial-sarcoma-of-the-knee-rising-from-a-lateral-meniscus-a-case-report
#1
M Bergovec, M Smerdelj, F Bacan, S Seiwerth, D Herceg, M Prutki
Synovial sarcoma (SS) is a rare mesenchymal tumor, accounting less than 10% of soft tissue sarcomas. We report a case of intraarticular SS mimicking nodular synovitis and lateral meniscus rupture. Due to clinical and radiological presentation, arthroscopic synovectomy was performed, and histology confirmed nodular synovitis. After four years the lesion recurred and new arthroscopic biopsy was performed, revealing a monophasic SS with SYT/SSX1 translocation. Repeated histology of the first specimen confirmed appearance of a nodular synovitis microscopically, with no morphological criteria for a sarcoma, but molecular analysis showed positive SYT/SSX1 translocation...
January 16, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29354726/outcomes-and-complications-of-s2-alar-iliac-fixation-technique-in-patients-with-neuromuscular-scoliosis-experience-in-a-third-level-pediatric-hospital
#2
Carlos Segundo Montero, David Alberto Meneses, Fernando Alvarado, Wilmer Godoy, Diana Isabel Rosero, Jose Manuel Ruiz
Background: Multiple techniques are utilized for distal fixation in patients with neuromuscular scoliosis. Although there is evidence of benefit with S2 alar iliac (S2AI) fixation, this remains controversial. The objective of this study is to evaluate the radiological outcomes and complications associated with this surgical technique in a pediatric population. Methods: An observational retrospective case series study was performed. All pediatric patients between January 2011 and February 2014 diagnosed with neuromuscular scoliosis associated with pelvic obliquity, which required surgery with fixation unto S2AI, were included...
December 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/29354473/aquarium-portal-technique-for-pasta-lesion-repair
#3
Dominik C Meyer, Christian Gerber, Filippo Familiari
The simultaneous arthroscopic exposure of the subacromial and intra-articular space of the shoulder is challenging in the presence of only partial-thickness rotator cuff tears. We present our experience and method of entering the joint through the opened rotator cuff interval from an anterosuperior portal between the coracoid process and anterior acromion. With moderate (approximately 30°) abduction and external rotation, the rotator interval opens readily, offering a view with the camera toward the anterior edge of the supraspinatus tendon...
October 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29354466/intra-articular-anterior-cruciate-ligament-reconstruction-with-extra-articular-lateral-tenodesis-of-the-iliotibial-band
#4
João Luiz Ellera Gomes, Murilo Anderson Leie, Marcos Marczwski, George Sánchez, Márcio Balbinotti Ferrari
An increasing concern has been given to the rotation stability of the knee in the setting of an anterior cruciate ligament (ACL) reconstruction. This growing interest stems from a better understanding of the rotational stability of the knee afforded by the identification of the anterolateral ligament. Previously, a residual abnormal pivot-shift test had been found after an anatomic single-band reconstruction of the ACL because of a lack of rotational stability, which may lead to the development of osteoarthritis...
October 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29354448/femoral-derotation-osteotomy-technique-for-excessive-femoral-anteversion
#5
David E Hartigan, Itay Perets, John P Walsh, Benjamin G Domb
Excessive femoral anteversion may lead to increasing stress placed on the anterior acetabulum and soft tissues, which can predispose to intra-articular hip pathology. By addressing the excessive femoral anteversion in combination with intra-articular hip pathology, the results will be durable over time. This technique details how to perform a femoral derotation osteotomy for excessive femoral anteversion after addressing intra-articular pathology with hip arthroscopy in one surgical intervention. This allows the surgeon to address both the underlying pathoanatomy and the resultant intra-articular sequelae...
August 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29354428/tibial-eminence-fracture-repair-with-double-hewson-suture-passer-technique
#6
Steven F DeFroda, Jonathan D Hodax, Kalpit N Shah, Aristides I Cruz
Displaced tibial eminence fractures are commonly encountered in pediatric patients and are often considered to be functionally equivalent to an anterior cruciate ligament (ACL) rupture. While a variety of techniques are available for fixation of this injury, we describe an anchorless technique relying on suture fixation tied over a bone bridge. This technique also relies on two intra-articular Hewson suture passers to quickly and effectively pass and shuttle sutures through the ACL and tibial bone tunnels in order to reduce and fix the fracture fragment...
August 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29354422/combined-anatomic-anterior-cruciate-ligament-and-double-bundle-anterolateral-ligament-reconstruction
#7
Assem Mohamed Noureldin Zein, Mohamed Elshafie, Ahmed Nady Saleh Elsaid, Mohamed Ahmed Elsaid Elrefai
The results of arthroscopic anterior cruciate ligament (ACL) reconstruction are so far satisfactory and improving over time as a result of the improved understanding of the anatomy and biomechanics of the ACL. Rotational instability confirmed by a positive pivot shift is present in more than 15% of cases who underwent successful ACL reconstruction. Persistent rotational instability interferes with performing pivoting sports, and also may lead to meniscal and chondral injuries, or re-rupture of the reconstructed ACL...
August 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29354407/biceps-tenodesis-anatomic-tensioning
#8
Matthew A Tao, Jacob G Calcei, Samuel A Taylor
Biceps tenodesis is a commonly employed surgical intervention for refractory symptoms related to the biceps-labral complex, those intra-articular and those within the extra-articular bicipital tunnel. While a litany of surgical techniques exists, the optimal method for ensuring an anatomic length-tension relationship during tenodesis remains elusive. Appropriate tensioning may limit undesirable outcomes such as cramping or cosmetic deformity. We describe herein our technique as a simple and efficient means to establish patient-specific, anatomic tensioning of the long head of the biceps during tenodesis...
August 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29354406/office-based-needle-arthroscopy-a-standardized-diagnostic-approach-to-the-knee
#9
Sean McMillan, Sundeep Saini, Eric Alyea, Elizabeth Ford
Surgical knee arthroscopy is among the most commonly performed procedures in the United States. The decision to treat is often based on clinical examination and magnetic resonance imaging. Equivocal results frequently require patients to undergo surgical arthroscopy, exposing the patient to inherent risks and potential surgical complications. Office-based needle arthroscopy provides an alternative approach to visualizing intra-articular anatomy and pathology in real time. The purpose of this article is to provide a standardized diagnostic approach to needle arthroscopy of the knee...
August 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29353775/mechanical-wear-and-oxidative-degradation-analysis-of-retrieved-ultra-high-molecular-weight-polyethylene-acetabular-cups
#10
Dipankar Choudhury, Matúš Ranuša, Robert A Fleming, Martin Vrbka, Ivan Křupka, Matthew G Teeter, Josh Goss, Min Zou
The number of revision joint replacements has been increasing substantially over the last few years. Understanding their failure mechanism is extremely important for improving the design and material selection of current implants. This study includes ten retrieved and four new mildly cross-linked ultra-high molecular weight polyethylene (UHMWPE) acetabular liners. Among them, most of the prostheses (n = 5) were reported to be revised and replaced due to aseptic loosening, followed by painful joint (n = 2), dislocation (n = 1), intra articular ossification (n = 1), combination of wear (liner) and osteolysis (stem) (n=1)...
January 6, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29353045/functionally-compromised-synovium-derived-mesenchymal-stem-cells-in-charcot-neuroarthropathy
#11
Reed Mitchell, Jeremy Molligan, Sydney Rooney, Young Cho, Lew Schon, Zijun Zhang
Charcot neuroarthropathy (CNA) often presents as a diabetic foot complication. The role of synovial mesenchymal stem cells (syn-MSCs) in the pathogenesis of CNA is unclear. Synovial samples were collected, for isolation of syn-MSCs, from diabetic patients with CNA (n=7) and non-diabetic patients with intra-articular fracture or normal joints (non-CNA; n=7) during foot surgery. The syn-MSCs in the CNA and non-CNA groups were characterized comparatively. The average number of colonies formed in the CNA group was 6±3...
January 15, 2018: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/29352206/omega-3-carboxylic-acids-provide-efficacious-anti-inflammatory-activity-in-models-of-crystal-mediated-inflammation
#12
Cory Iverson, Andrew Bacong, Sha Liu, Scott Baumgartner, Torbjörn Lundström, Jan Oscarsson, Jeffrey N Miner
This study assesses the efficacy and exposure-response relationship of omega-3-carboxylic acids (OM-3 CA) in models of crystal-based inflammation. Human THP-1 macrophages and primary peripheral blood mononuclear cells exposed to multiple inflammatory crystal types were used to determine the anti-inflammatory potential of omega-3 (OM-3) fatty acids in vitro. Anti-inflammatory effects of OM-3 CA in vivo were tested in rat monosodium urate (MSU) crystal air pouch and rat knee intra-articular MSU injection models...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29351268/use-of-different-methods-of-intramedullary-nailing-for-fixation-of-distal-radius-fractures-a-retrospective-analysis-of-clinical-and-radiological-outcomes
#13
Murat Çalbıyık, Deniz Ipek
BACKGROUND We aimed to evaluate the clinical and radiologic outcomes of using Sonoma WRx versus Micronail intramedullary nailing for the fixation of distal radius fractures. MATERIAL AND METHODS A total of 68 patients with primarily extra-articular and simple intra-articular fractures of the distal radius who underwent intramedullary distal radius fixation using Sonoma WRx (n=39) or Micronail (n=29) intramedullary nails were enrolled in the study. The clinical outcome measures included the range of motion (ROM), visual analog scale (VAS), functional outcomes (patient-reported Disabilities of the Arm, Shoulder and Hand [DASH] score and clinician-based Gartland-Werley score), radiographic scores (Stewart score), and parameters related to the quality of radiographic reduction and complications (radial inclination, volar tilt, radial height, and radio-ulnar variance)...
January 19, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29349977/-therapeutic-effects-of-internal-drainage-by-expanding-arthroscopic-gastrocnemius-semimembranosus-bursa-and-cyst-wall-resection-for-the-treatment-of-41-patients-with-popliteal-cysts
#14
Li-Chuang Wu, Hai-Bo Zhou, Chao Zhang, Lei Chen, Cai-Long Liu
OBJECTIVE: To investigate the clinical curative effects of internal drainage by expanding arthroscopic gastrocnemius-semimembranosus bursa(GSB) and cyst wall resection for the treatment of popliteal cysts. METHODS: A retrospective analysis of patients from May 2011 to December 2015. Arthroscopic treatment for 41 patients with popliteal fossa cysts, 18 males and 23 females, aged from 34 to 67 years old, averaged 42.6 years old. All the patients had preoperative magnetic resonance imagings to confirm the diagnosis and identify the valvular opening(Gastrocnemius-Semimembranosus bursa, GSB), as well as the associated intra-articular pathology...
April 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29349957/-choices-of-the-internal-fixation-and-approaches-on-unstable-pelvic-ring-fractures
#15
Da-Wei Bi, Gang Zu, Lei Han, Yi-Min Chen, Hai-Tao Ma, Gang-Feng Hu, Yuan Zhu
OBJECTIVE: To discuss the suitable surgical approach and the internal fixation of unstable pelvic pelvic fractures. METHODS: From May 2010 to May 2015, 45 patients with unstable pelvic fractures were treated with different approaches and fixations, including 38 males and 7 females with an average age of 45 years ranging from 21 to 61 years. The course was within 2 weeks. According to Young-Burg classification, 23 patients were lateral compression injuries, 6 patients were vertical shearing injuries, 16 patients were anterior-posterior compression injuries...
March 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29342067/there-is-no-column-a-new-classification-for-acetabular-fractures
#16
Amir Herman, Shay Tenenbaum, Vladislav Ougortsin, Nachshon Shazar
BACKGROUND: The surgical treatment of acetabular fractures relies on the understanding of fracture architecture and their classification. The Judet and Letournel classification has been the cornerstone in understanding and treating acetabular fractures. Recently, there has been growing evidence of discrepancies and incompleteness in the Judet and Letournel classification, adversely affecting its clinical use. This study describes a novel comprehensive classification system that will direct surgical approach and fixation methods...
January 17, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29340748/lack-of-level-i-evidence-on-how-to-prevent-infection-after-elective-shoulder-surgery
#17
Carola F Eck, Julie A Neumann, Orr Limpisvasti, Christopher R Adams
PURPOSE: Infection is a concern after all orthopedic procedures, including shoulder surgery. This systematic review of literature aimed to determine risk factors for infection as well as the availability and effectiveness of measures utilized to prevent infection after elective shoulder surgery. METHODS: An electronic database search was performed using MEDLINE (1950-October 2017), EMBASE (1980-October 2017), CINAHL (1982-October 2017), and the Cochrane database to identify studies reporting a risk factor or preventive measure for infection after shoulder surgery...
January 16, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29337175/minimally-invasive-versus-extensile-lateral-approach-for-saners-type-ii-and-iii-calcaneal-fractures-a-meta-analysis-of-randomized-controlled-trials
#18
REVIEW
Zhikui Zeng, Lingmei Yuan, Shengpeng Zheng, Youqiang Sun, Feng Huang
BACKGROUND: The use of less-invasive techniques in the treatment of displaced intra-articular calcaneal fractures (DIACFs) remains controversial. No prior meta-analysis has considered the influence of differences in the fracture type. Thus, our meta-analysis aimed to investigate the efficacy and safety of minimally invasive (MI) in Sanders type II and III fractures. MATERIALS AND METHODS: A comprehensive search was performed to identify RCTs comparing MI using sinus tarsi approach (STA) or percutaneous reduction (PR) to open reduction (OR) via extensile lateral approach (ELA) from the Cochrane Library, PubMed, Embase and CNKI...
January 11, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29334180/nitric-oxide-dependent-degradation-of-polyethylene-glycol-modified-single-walled-carbon-nanotubes-implications-for-intra-articular-delivery
#19
Kunal Bhattacharya, Cristiano Sacchetti, Pedro M Costa, Jens Sommertune, Birgit D Brandner, Andrea Magrini, Nicola Rosato, Nunzio Bottini, Massimo Bottini, Bengt Fadeel
Polyethylene glycol (PEG)-modified carbon nanotubes have been successfully employed for intra-articular delivery in mice without systemic or local toxicity. However, the fate of the delivery system itself remains to be understood. In this study 2 kDa PEG-modified single-walled carbon nanotubes (PNTs) are synthesized, and trafficking and degradation following intra-articular injection into the knee-joint of healthy mice are studied. Using confocal Raman microspectroscopy, PNTs can be imaged in the knee-joint and are found to either egress from the synovial cavity or undergo biodegradation over a period of 3 weeks...
January 15, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29329028/equine-allogeneic-chondrogenic-induced-mesenchymal-stem-cells-a-gcp-target-animal-safety-and-biodistribution-study
#20
S Y Broeckx, J H Spaas, K Chiers, L Duchateau, L Van Hecke, L Van Brantegem, M Dumoulin, A M Martens, F Pille
The safety of the intra-articular use of mesenchymal stem cells (MSCs) is scarcely reported. Therefore, the goal of this study was to investigate the safety of a single intra-articular injection with allogeneic chondrogenic induced MSCs combined with equine plasma (=the investigational product: IVP) compared to a saline (0.9% NaCl) placebo control (=control product: CP). Sixteen healthy experimental horses were randomly assigned to receive a single intra-articular injection with either the IVP (n=8) or the CP (n=8) in the left metacarpophalangeal joint...
December 27, 2017: Research in Veterinary Science
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