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Orthopaedic Surgery

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https://www.readbyqxmd.com/read/29770586/surgical-infection-after-posterolateral-lumbar-spine-arthrodesis-ct-analysis-of-spinal-fusion
#1
Pablo Andrés-Cano, Ana Cerván, Miguel Rodríguez-Solera, Jose Antonio Ortega, Natividad Rebollo, Enrique Guerado
OBJECTIVE: To determine the incidence of infection after instrumented lumbar spine surgery, the demographic and surgical variables associated with acute infection, and the influence of infection and debridement on the consolidation of spinal fusion. METHODS: After obtaining approval from the hospital ethics committee, an observational study was made on a prospective cohort of consecutive patients surgically treated by posterolateral lumbar spine arthrodesis (n = 139, 2005-2011)...
May 16, 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29770583/angle-stable-interlocking-intramedullary-nails-for-tibial-plateau-fractures
#2
Peng Jia, Feng-Cheng Lu, Kifayat Ullah, Man Zhang, Yan-Sheng Dong, Chao Xiong, Zhi-Hui Zhao, Jin-Feng Wang, Ju-Wen Chen, Yong-Qing Wang
OBJECTIVE: Angle stable interlocking intramedullary nail (ASIN), a novel technique, has rarely been used for treatment of tibial plateau fractures (TPF). This retrospective study was designed to introduce this novel technique, ASIN, as well as to describe the initial experience and verify the effectiveness when ASIN was used for the management for TPF. METHODS: A cohort of 19 cases with closed TPF aged from 18-70 years with at least 23 months follow-up from November 2008 to September 2013 was analyzed retrospectively...
May 16, 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29770581/effect-of-static-compression-loads-on-intervertebral-disc-an-in-vivo-bent-rat-tail-model
#3
Wei Xia, Lin-Lin Zhang, Jun Mo, Wen Zhang, Hai-Tao Li, Zong-Ping Luo, Hui-Lin Yang
OBJECTIVE: To evaluate how well different magnitudes of compression-induced degenerative changes using a bent rat tail model simulated human lumbar lordosis. It has been shown that compression plays an important role in intervertebral disc degeneration (IDD). METHODS: Sprague-Dawley rats (n = 25) were instrumented with a special compressive apparatus that was used to bend the intervertebral disc between the 8th and the 10th caudal vertebral bodies using two Kirschner wires inserted percutaneously into the middle of two tail vertebrae...
May 16, 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29770577/percutaneous-reduction-and-internal-fixation-for-monocondylar-fractures-of-tibial-plateau-a-systematic-review
#4
REVIEW
Heng-Rui Chang, Yi-Yang Yu, Lin-Lin Ju, Zhan-Le Zheng, Wei Chen, Ying-Ze Zhang
Instead of extensive dissection of soft tissue around the fracture site, percutaneous techniques have unique advantages in managing displaced fragments, including preservation of soft tissues, less blood loss, lower risk of complications, and earlier functional rehabilitation. However, there are few systematic reviews on the effects of percutaneous reduction and internal fixation (PRIF) for tibial plateau fractures. A systematic search of Cochrane, EMBASE, and MEDLINE databases was performed for all publicly available data in March 2017 regarding the use of PRIF in treating monocondylar tibial plateau fractures...
May 16, 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29767473/prediction-of-callus-subsidence-in-distraction-osteogenesis-using-callus-formation-scoring-system-preliminary-study
#5
Panlop Tirawanish, Perajit Eamsobhana
OBJECTIVE: To develop the scoring system which describes both quality and quantity of callus formation to predict the callus subsidence. METHODS: Forty-seven bony segments with an average lengthening of 5.17 ± 2.83 cm were included. The score was calculated based on the amount of callus classified in five patterns and the summation with the density of the callus classified in four patterns; the total score was 9. Bony subsidence >10% or >10° angulation were considered significant...
May 16, 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29767463/mechanical-and-biological-properties-of-a-biodegradable-mg-zn-ca-porous-alloy
#6
Yong-Qiang Zhang, Yang Li, Huan Liu, Jing Bai, Ni-Rong Bao, Yue Zhang, Peng He, Jian-Ning Zhao, Li Tao, Feng Xue, Guang-Xin Zhou, Gen-Tao Fan
OBJECTIVES: As promising alternative to current metallic biomaterials, the porous Mg scaffold with a 3-D open-pore framework has drawn much attention in recent years due to its suitable biodegradation, biocompatibility, and mechanical properties for human bones. This experiment's aim is to study the mechanical properties, biosafety, and osteogenesis of porous Mg-Zn alloy. METHODS: A porous Mg-2Zn-0.3Ca (wt%) alloy was successfully prepared by infiltration casting, and the size of NaCl particles was detected by a laser particle size analyzer...
May 16, 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29745033/role-of-teriparatide-in-glucocorticoid-induced-osteoporosis-through-regulating-cellular-reactive-oxygen-species
#7
Tao Wang, Chao Han, Peng Tian, Peng-Fei Li, Xin-Long Ma
OBJECTIVE: To determine the signaling pathways mediated by teriparatide in MLO-Y4 cell lines based on the evaluation of reactive oxygen species (ROS) through AKT pathways, which regulate apoptosis of bone cells. METHODS: We performed the DCFH-DA assay to investigate the role of ROS in MLO-Y4 cells caused by dexamethasone (Dex). Four groups were included: Dex group, Dex+NAC, Dex+ teriparatide group and control group (without any dispose). Real-time reverse transcriptase polymerase chain reaction was used to test the SOD2 and Cat mRNA expression...
May 10, 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29624874/biological-and-biomechanical-evaluation-of-autologous-tendon-combined-with-ligament-advanced-reinforcement-system-artificial-ligament-in-a-rabbit-model-of-anterior-cruciate-ligament-reconstruction
#8
Xin-Min Wang, Gang Ji, Xiao-Meng Wang, Hui-Jun Kang, Fei Wang
OBJECTIVE: To compare the biomechanical and histological changes in a rabbit model after reconstructing the anterior cruciate ligament (ACL) with solely autologous tendon and with autologous tendon combined with the ligament advanced reinforcement system (LARS) artificial ligament. METHODS: Anterior cruciate ligament reconstruction was performed in 72 knees from 36 healthy New Zealand white rabbits (bodyweight, 2500-3000 g). The Achilles tendons were harvested bilaterally...
April 6, 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29878716/complications-and-prevention-strategies-of-oblique-lateral-interbody-fusion-technique
#9
Zhong-You Zeng, Zhao-Wan Xu, Deng-Wei He, Xing Zhao, Wei-Hu Ma, Wen-Fei Ni, Yong-Xing Song, Jian-Qiao Zhang, Wei Yu, Xiang-Qian Fang, Zhi-Jie Zhou, Nan-Jian Xu, Wen-Jian Huang, Zhi-Chao Hu, Ai-Lian Wu, Jian-Fei Ji, Jian-Fu Han, Shun-Wu Fan, Feng-Dong Zhao, Hui Jin, Fei Pei, Shi-Yang Fan, De-Xiu Sui
OBJECTIVE: To analyze the early complications and causes of oblique lateral interbody fusion, and put forward preventive measures. METHODS: There were 235 patients (79 males and 156 females) analyzed in our study from October 2014 to May 2017. The average age was 61.9 ± 0.21 years (from 32 to 83 years). Ninety-one cases were treated with oblique lateral interbody fusion (OLIF) alone (OLIF alone group) and 144 with OLIF combined with posterior pedicle screw fixation through the intermuscular space approach (OLIF combined group)...
May 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29878715/corrigendum
#10
(no author information available yet)
No abstract text is available yet for this article.
May 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29878714/recurrence-of-giant-cell-tumor-of-the-spine-after-resection-a-report-of-10-cases
#11
Peng Lin, Nong Lin, Wangsiyuan Teng, Sheng-Dong Wang, Wei-Bo Pan, Xin Huang, Xiao-Bo Yan, Meng Liu, Heng-Yuan Li, Bing-Hao Li, Ling-Ling Sun, Zhan Wang, Xing-Zhi Zhou, Zhao-Ming Ye
OBJECTIVE: To review the clinical details and further treatments for recurrent spinal giant cell tumors (SGCT), and to analyze the risk factors of recurrence and shed new light on the treatment options and prognosis of recurrent SGCT. METHODS: A retrospective analysis of recurrent SGCT between April 2003 and January 2014 was performed. A total of 10 patients comprising 3 men and 7 women with a mean age of 28.9 years (range, 21-40 years) were included in the study...
May 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29878713/comparative-study-between-m6-c-and-mobi-c-cervical-artificial-disc-replacement-biomechanical-outcomes-and-comparison-with-normative-data
#12
My Pham, Kevin Phan, Ian Teng, Ralph J Mobbs
OBJECTIVE: Cervical spondylosis affects a huge proportion of the middle-aged population. Degenerative changes can occur in multiple regions of the cervical spine typically affecting the joints, intervertebral discs and endplates. These changes lead to compression of adjacent nervous structures, which results in radiculopathic and myelopathic pain. Various treatment modalities are currently available with non-surgical approaches the initial go to if there is no symptomatic cord compression...
May 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29770589/short-term-follow-up-of-antibiotic-loaded-articulating-cement-spacers-in-two-stage-revision-of-infected-total-knee-arthroplasty-a-case-series
#13
Meng-Qiang Tian, Xian-Teng Yang, Xiao-Bin Tian, Yun-Bo Sun, Yuan-Hui Duan, Li Sun
OBJECTIVE: Infection of total knee arthroplasty (TKA) is a rare but devastating complication. Two-stage revision is an effective treatment for late infected TKA. This study aimed to assess the short-term results of two-stage revision using articulating antibiotic-loaded spacers. METHODS: Twenty-five patients (10 men and 15 women) were diagnosed with late infections after TKA and treated with two-stage revision from April 2006 to August 2010; 19 of these patients had TKA for osteoarthritis and 6 for rheumatoid arthritis...
May 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29484857/biomechanical-analysis-of-a-novel-intercalary-prosthesis-for-humeral-diaphyseal-segmental-defect-reconstruction
#14
Li-Ming Zhao, Dong-Mu Tian, Yue Wei, Jun-Hui Zhang, Zheng-Lin Di, Zhi-Yong He, Yong-Cheng Hu
OBJECTIVE: To study the biomechanical properties of a novel modular intercalary prosthesis for humeral diaphyseal segmental defect reconstruction, to establish valid finite element humerus and prosthesis models, and to analyze the biomechanical differences in modular intercalary prostheses with or without plate fixation. METHODS: Three groups were set up to compare the performance of the prosthesis: intact humerus, humerus-prosthesis and humerus-prosthesis-plate...
February 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29484856/degenerate-disc-infection-study-with-contaminant-control-discussion-on-the-research-methods
#15
Prashanth J Rao, Christine Chau, Kevin Phan, Ralph J Mobbs
OBJECTIVE: The role of bacterial infection in the causation of disc degeneration and its consequences is controversial. The current evidence is limited to underpowered studies, with the majority of such studies having only an internal contaminant arm, and only one study having a control arm with a non-degenerate disc population. The Degenerate-disc Infection Study with Contaminant Control (DISC) study includes a control arm and an internal contaminant control to resolve these shortcomings...
February 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29436166/neurospine-surgery-research-group-nsurg-classification-system-for-grading-lumbar-synovial-cysts
#16
Ralph Mobbs, Ryan Campbell, Kevin Phan
To classify facet joint cysts (FJC) which will assist in identification of patient groups to best fit with a particular intervention. Sagittal T2 -weighted magnetic resonance images (MRI) of these patients are used to measure cyst size, while axial T2 -weighted MRI are used to determine the percentage of the vertebral canal occupied by the cyst. The degree of spondylolisthesis is also measured through standing X-rays or sagittal MRI. The proposed grading system is as follows. Grade I includes cysts that occupy less than 25% of the canal diameter that usually present with unilateral radiculopathy...
February 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29436145/accumulated-spinal-axial-biomechanical-loading-induces-degeneration-in-intervertebral-disc-of-mice-lumbar-spine
#17
Yang-Jun Lao, Tao-Tao Xu, Hong-Ting Jin, Hong-Feng Ruan, Ji-Tao Wang, Li Zhou, Ping-Er Wang, Jian Wang, Jun Ying, Yuan-Bin Zhang, Cheng Luo, Fang-da Fu, Pei-Jian Tong, Lu-Wei Xiao, Cheng-Liang Wu
OBJECTIVE: To investigate the effect of accumulated spinal axial biomechanical loading on mice lumbar disc and the feasibility of applying this method to establish a mice intervertebral disc degeneration model using a custom-made hot plate cage. In previous studies, we observed that the motion pattern of mice was greatly similar to that of humans when they were standing and jumping on their lower limbs. There is little data to demonstrate whether or not accumulated spinal axial biomechanical loading could induce intervertebral disc degeneration in vivo...
February 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29430858/clinical-gait-evaluation-of-patients-with-lumbar-spine-stenosis
#18
Jun Sun, Yan-Cheng Liu, Song-Hua Yan, Sha-Sha Wang, D Kevin Lester, Ji-Zhou Zeng, Jun Miao, Kuan Zhang
OBJECTIVE: The third generation Intelligent Device for Energy Expenditure and Activity (IDEEA3, MiniSun, CA) has been developed for clinical gait evaluation, and this study was designed to evaluate the accuracy and reliability of IDEEA3 for the gait measurement of lumbar spinal stenosis (LSS) patients. METHODS: Twelve healthy volunteers were recruited to compare gait cycle, cadence, step length, velocity, and number of steps between a motion analysis system and a high-speed video camera...
February 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29430846/low-grip-strength-is-a-strong-risk-factor-of-osteoporosis-in-postmenopausal-women
#19
Yi-Zhong Li, Hua-Feng Zhuang, Si-Qing Cai, Chang-Kun Lin, Pei-Wen Wang, Li-Sheng Yan, Jin-Kuang Lin, Hai-Ming Yu
OBJECTIVE: To investigate the effect of grip strength on bone mineral density (BMD) in postmenopausal women. Low BMD is related to risk of fracture and falling is the strongest factor for fragility fractures. Handgrip strength is a reliable indicator of muscle strength and muscle strength is associated with falling. METHODS: For the present study 120 women were divided into two groups: those ≤65 years and those >65 years. Serum 25 hydroxyvitamin D (25OHD), BMD, and handgrip strength were measured to observe the effect of age on 25OHD, grip strength, and BMD, as well as the effect of 25OHD on grip strength and BMD...
February 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29424129/micro-perfusion-and-quantitative-analysis-of-the-femoral-head-intraosseous-artery
#20
Xing Qiu, Liang-Liang Cheng, Ben-Jie Wang, Bao-Yi Liu, Lei Yang, Mingyang Yu, Guishan Gu, De-Wei Zhao
The present study investigates the feasibility of micro perfusion of femoral head specimens from femoral neck fracture patients by the inferior retinacular arteries and performing intraosseous artery quantitative analysis of the femoral head. Twelve femoral neck fracture patients who had undergone conventional hip replacement surgery were included in this study. Femoral head specimen arteries were first dissected and exposed and then perfused by the inferior retinacular arteries and all the femoral heads underwent micro-CT scanning...
February 2018: Orthopaedic Surgery
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