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Journal of Orthopaedic Surgery and Research

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https://www.readbyqxmd.com/read/28532505/do-small-changes-in-rotation-affect-measurements-of-lower-extremity-limb-alignment
#1
Amir A Jamali, John P Meehan, Nathan M Moroski, Matthew J Anderson, Ramit Lamba, Carol Parise
BACKGROUND: The alignment of the lower extremity has important implications in the development of knee arthritis. The effect of incremental rotations of the limb on common parameters of alignment has not been studied. The purpose of the study was to (1) determine the standardized neutral position measurements of alignment and (2) determine the effect of rotation on commonly used measurements of alignment. METHODS: Eighty-seven full length CT angiography studies (49 males and 38 females, average age 66 years old) were included...
May 22, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28521818/in-vivo-evaluation-of-microglia-activation-by-intracranial-iron-overload-in-central-pain-after-spinal-cord-injury
#2
Fan Xing Meng, Jing Ming Hou, Tian Sheng Sun
BACKGROUND: Central pain (CP) is a common clinical problem in patients with spinal cord injury (SCI). Recent studies found the pathogenesis of CP was related to the remodeling of the brain. We investigate the roles of iron overload and subsequent microglia activate in the remodeling of the brain after SCI. METHODS: An SCI-induced CP model was established in Sprague-Dawley rats that were randomly assigned to SCI, sham operation, deferoxamine (DFX), minocycline, and nitric oxide synthase inhibitor treatment groups...
May 18, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28521779/total-ankle-arthroplasty-versus-ankle-arthrodesis-a-comparison-of-outcomes-over-the-last-decade
#3
REVIEW
Cort D Lawton, Bennet A Butler, Robert G Dekker, Adam Prescott, Anish R Kadakia
BACKGROUND: The surgical treatment of end-stage tibiotalar arthritis continues to be a controversial topic. Advances in surgical technique and implant design have lead to improved outcomes after both ankle arthrodesis (AA) and total ankle arthroplasty (TAA), yet a clear consensus regarding the most ideal form of treatment is lacking. In this study, the outcomes and complications following AA and TAA are compared in order to improve our understanding and decision-making for care and treatment of symptomatic tibiotalar arthritis...
May 18, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28499451/effects-of-annulus-defects-and-implantation-of-poly-lactic-co-glycolic-acid-plga-fibrin-gel-scaffolds-on-nerves-ingrowth-in-a-rabbit-model-of-annular-injury-disc-degeneration
#4
Long Xin, Weixing Xu, Leijun Yu, Shunwu Fan, Wei Wang, Fang Yu, Zhenbin Wang
BACKGROUND: Growth of nerve fibers has been shown to occur in a rabbit model of intravertebral disc degeneration (IVD) induced by needle puncture. As nerve growth may underlie the process of chronic pain in humans affected by disc degeneration, we sought to investigate the factors underlying nerve ingrowth in a minimally invasive annulotomy rabbit model of IVD by comparing the effects of empty disc defects with those of defects filled with poly(lactic-co-glycolic acid)/fibrin gel (PLGA) plugs...
May 12, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28499438/early-developed-asd-adjacent-segmental-disease-in-patients-after-surgical-treatment-of-the-spine-due-to-cancer-metastases
#5
Grzegorz Guzik
BACKGROUND: The causes of ASD are still relatively unknown. Correlation between clinical status of patients and radiological MRI findings is of primary importance. The radiological classifications proposed by Pfirmann and Oner are most commonly used to assess intradiscal degenerative changes. The aim of the study was to assess the influence of the extension of spine fixation on the risk of developing ASD in a short time after surgery. METHODS: A total of 332 patients with spinal tumors were treated in our hospital between 2010 and 2013...
May 12, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28499398/biomechanical-evaluation-of-a-novel-dualplate-fixation-method-for-proximal-humeral-fractures-without-medial-support
#6
Yu He, Yaoshen Zhang, Yan Wang, Dongsheng Zhou, Fu Wang
BACKGROUND: Comminuted fractures of the proximal humerus are generally treated with the locking plate system, and clinical results are satisfactory. However, unstable support of the medial column results in varus malunion and screw perforation. We designed a novel medial anatomical locking plate (MLP) to directly support the medial column. Theoretically, the combined application of locking plate and MLP (LPMP) would directly provide strong dual-column stability. We hypothesized that the LPMP could provide greater construct stability than the locking plate alone (LP), locking plate combined with a fibular graft (LPSG), and locking plate combined with a distal radius plate (LPDP)...
May 12, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28499396/averaging-rotational-landmarks-during-total-knee-arthroplasty-reduces-component-malrotation-caused-by-femoral-asymmetry
#7
Tat Woon Chao, Liam Geraghty, Pandelis Dimitriou, Simon Talbot
BACKGROUND: Femoral component malrotation is a common cause of patient dissatisfaction after total knee arthroplasty. The sulcus line (SL) is more accurate than Whiteside's line as it corrects for variation in the coronal orientation of the groove. The hypothesis is that averaging the SL and posterior condylar axis (PCA) will reduce femoral malrotation. METHODS: The component was inserted at a position between the SL and PCA in 91 patients. An intraoperative photograph was taken showing the landmarks...
May 12, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28499391/safety-of-three-different-product-doses-in-autologous-chondrocyte-implantation-results-of-a-prospective-randomised-controlled-trial
#8
Christoph Becher, Volker Laute, Stefan Fickert, Wolfgang Zinser, Philipp Niemeyer, Thilo John, Peter Diehl, Thomas Kolombe, Rainer Siebold, Jakob Fay
BACKGROUND: This study was conducted to assess the efficacy and safety of the three dose levels of the three-dimensional autologous chondrocyte implantation product chondrosphere® in the treatment of cartilage defects (4-10 cm(2)) of knee joints. We hereby report the safety results for a 36-month post-treatment observation period. METHODS: This was a prospective phase II trial with a clinical intervention comprising biopsy for culturing spheroids and their subsequent administration (level of evidence: I)...
May 12, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28472996/a-survey-of-proteomic-biomarkers-for-heterotopic-ossification-in-blood-serum
#9
Laura E Edsberg, Erin L Crowgey, Patrick M Osborn, Jennifer T Wyffels
BACKGROUND: Heterotopic ossification (HO) is a significant problem for wounded warriors surviving high-energy blast injuries; however, currently, there is no biomarker panel capable of globally characterizing, diagnosing, and monitoring HO progression. The aim of this study was to identify biomarkers for HO using proteomic techniques and blood serum. METHODS: Isobaric tags for relative and absolute quantitation (iTRAQ) was used to generate a semi-quantitative global proteomics survey of serum from patients with and without heterotopic ossification...
May 4, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28449701/arthroscopic-treatment-of-focal-osteochondral-lesions-of-the-first-metatarsophalangeal-joint
#10
Ersin Kuyucu, Harun Mutlu, Serhat Mutlu, Baris Gülenç, Mehmet Erdil
BACKGROUND: Although arthroscopic surgical treatment of the first metatarsophalangeal (MTP) joint involves painful sesamoid excision, synovectomy, debridement, and partial cheilectomy, no gold standard treatment technique has been defined in the literature for hallux rigidus and focal osteochondral lesions. This study aimed to assess the arthroscopic treatment for early grade focal osteochondral lesions of the first MTP joint and to determine the impact of arthroscopic microhole drill surgery on foot function and activities of daily living in a group of patients who failed conservative treatment...
April 27, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28446192/prospective-clinical-and-radiographic-evaluation-of-an-allogeneic-bone-matrix-containing-stem-cells-trinity-evolution%C3%A2-viable-cellular-bone-matrix-in-patients-undergoing-two-level-anterior-cervical-discectomy-and-fusion
#11
Timothy A Peppers, Dennis E Bullard, Jed S Vanichkachorn, Scott K Stanley, Paul M Arnold, Erik I Waldorff, Rebekah Hahn, Brent L Atkinson, James T Ryaby, Raymond J Linovitz
BACKGROUND: Trinity Evolution® (TE), a viable cellular bone allograft, previously demonstrated high fusion rates and no safety-related concerns after single-level anterior cervical discectomy and fusion (ACDF) procedures. This prospective multicenter clinical study was performed to assess the radiographic and clinical outcomes of TE in subjects undergoing two-level ACDF procedures. METHODS: In a prospective, multicenter study, 40 subjects that presented with symptomatic cervical degeneration at two adjacent vertebral levels underwent instrumented ACDF using TE autograft substitute in a polyetherethereketone (PEEK) cage...
April 26, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28446184/results-of-167-consecutive-cases-of-acetabular-fractures-using-the-kocher-langenbeck-approach-a-case-series
#12
Lukas L Negrin, David Seligson
BACKGROUND: Acetabular fractures are quite challenging injuries for the orthopedic surgeon because of their low incidence and their deep and complex anatomy. The objective of this study was to evaluate surgeon-independent parameters that might influence radiographic outcome and early complication rates of high-energy acetabular fractures treated by open reduction and internal fixation via the Kocher-Langenbeck approach, the golden standard for posterior access. METHODS: One hundred sixty-seven consecutive patients (111 males and 56 females) with a mean age of 41...
April 26, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28431586/expression-of-calcitonin-gene-related-peptide-in-the-infrapatellar-fat-pad-in-knee-osteoarthritis-patients
#13
Jun Aikawa, Kentaro Uchida, Shotaro Takano, Gen Inoue, Atsushi Minatani, Masayuki Miyagi, Dai Iwase, Hiroyuki Sekiguchi, Manabu Mukai, Masashi Takaso
BACKGROUND: The infrapatellar fat pad (IPFP) has been implicated as a possible source of osteoarthritis (OA) development and knee pain due to the production of inflammatory mediators and the existence of nerve fibers within this structure. Calcitonin gene-related peptide (CGRP) is a vasodilatory neuropeptide that is localized to joint tissues and has recently been implicated in the development of knee OA and OA pain. To date, however, the expression levels of CGRP in the IPFP of human knee OA patients have not been examined...
April 21, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28431561/the-evaluation-of-the-role-of-medial-collateral-ligament-maintaining-knee-stability-by-a-finite-element-analysis
#14
Dong Ren, Yueju Liu, Xianchao Zhang, Zhaohui Song, Jian Lu, Pengcheng Wang
BACKGROUND: A three-dimensional finite element model (FEM) of the knee joint was established to analyze the biomechanical functions of the superficial and deep medial collateral ligaments (MCLs) of knee joints and to investigate the treatment of the knee medial collateral ligament injury. METHODS: The right knee joint of a healthy male volunteer was subjected to CT and MRI scans in the extended position. The scanned data were imported into MIMICS, Geomagic, and ANSYS software to establish a three-dimensional FEM of the human knee joint...
April 21, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28427416/shoulder-ultrasonography-performed-by-orthopedic-surgeons-increases-efficiency-in-diagnosis-of-rotator-cuff-tears
#15
Chih-Hao Chiu, Poyu Chen, Alvin Chao-Yu Chen, Kuo-Yao Hsu, Shih-Sheng Chang, Yi-Sheng Chan, Yeung-Jen Chen
BACKGROUND: Rotator cuff tears are very common and their incidence increases with age. Shoulder ultrasonography has recently gained popularity in detecting rotator cuff tears because of its efficiency, cost-effectiveness, time-saving, and real-time nature of the procedure. Well-trained orthopedic surgeons may utilize shoulder ultrasonography to diagnose rotator cuff tears. The wait time of patients planned to have shoulder MRI (magnetic resonance imaging) to rule in rotator cuff tears may decrease after orthopedic surgeon start doing shoulder ultrasonography as a screening tool for that...
April 20, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28427404/retraction-note-evaluation-of-low-cost-custom-made-vac-therapy-compared-with-conventional-wound-dressings-in-the-treatment-of-non-healing-lower-limb-ulcers-in-lower-socio-economic-group-patients-of-kashmir-valley
#16
Zameer Ali, Afshan Anjum, Lubna Khurshid, Hamayun Ahad, Saheel Maajid, Shabir Ahmad Dhar
No abstract text is available yet for this article.
April 20, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28420431/injuries-in-extreme-sports
#17
REVIEW
Lior Laver, Ioannis P Pengas, Omer Mei-Dan
Extreme sports (ES) are usually pursued in remote locations with little or no access to medical care with the athlete competing against oneself or the forces of nature. They involve high speed, height, real or perceived danger, a high level of physical exertion, spectacular stunts, and heightened risk element or death.Popularity for such sports has increased exponentially over the past two decades with dedicated TV channels, Internet sites, high-rating competitions, and high-profile sponsors drawing more participants...
April 18, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28420425/acceleration-of-tendon-bone-healing-of-anterior-cruciate-ligament-graft-using-intermittent-negative-pressure-in-rabbits
#18
Zhengming Sun, Xiaoqing Wang, Ming Ling, Wei Wang, Yanhai Chang, Guang Yang, Xianghui Dong, Shixun Wu, Xueyuan Wu, Bo Yang, Ming Chen
BACKGROUND: The purpose of this study was to test effects of negative pressure on tendon-bone healing after reconstruction of anterior cruciate ligament (ACL) in rabbits. METHODS: Hind legs of 24 New Zealand White rabbits were randomly selected as negative pressure group and the contralateral hind legs as control. Reconstruction of the ACL was done. Joints of the negative pressure side were placed with drainage tubes connecting the micro-negative pressure aspirator...
April 18, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28420413/is-combined-use-of-intravenous-and-intraarticular-tranexamic-acid-superior-to-intravenous-or-intraarticular-tranexamic-acid-alone-in-total-knee-arthroplasty-a-meta-analysis-of-randomized-controlled-trials
#19
Bobin Mi, Guohui Liu, Huijuan Lv, Yi Liu, Kun Zha, Qipeng Wu, Jing Liu
BACKGROUND: Tranexamic acid (TXA) has been proven to be effective in reducing blood loss and transfusion rate after total knee arthroplasty (TKA) without increasing the risk of deep vein thrombosis (DVT) and pulmonary embolism (PE). Recently, an increasing number of studies have been interested in applying combined intravenous (IV) with intraarticular (IA) tranexamic acid in total knee arthroplasty. The purpose of this meta-analysis was to compare the blood loss and complications of combined TXA with IV TXA or IA TXA on TKA...
April 18, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28390430/impact-of-the-body-mass-index-on-perioperative-immunological-disturbances-in-patients-with-hip-and-knee-arthroplasty
#20
Simon Jasinski-Bergner, Anna-Luise Radetzki, Janine Jahn, David Wohlrab, Heike Kielstein
BACKGROUND: Obesity increases the risk for knee and hip joint implantation and negatively contributes to wound healing. In this study, in 52 patients undergoing hip and knee arthroplasty the amount of peripheral immune effector cells pre- and post-operative, as well as the expression of certain soluble factors affecting the functions of immune effector cells were investigated. METHODS: The peripheral immune cells and the expression of the soluble factors were determined by flow cytometry and correlated to each other in dependency of the BMI, the sex, and the kind of arthroplasty...
April 8, 2017: Journal of Orthopaedic Surgery and Research
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