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Orthopaedic Surgery

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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
#1
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/29436166/neurospine-surgery-research-group-nsurg-classification-system-for-grading-lumbar-synovial-cysts
#2
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 12, 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29436145/accumulated-spinal-axial-biomechanical-loading-induces-degeneration-in-intervertebral-disc-of-mice-lumbar-spine
#3
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 12, 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29430846/low-grip-strength-is-a-strong-risk-factor-of-osteoporosis-in-postmenopausal-women
#4
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 12, 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29424129/micro-perfusion-and-quantitative-analysis-of-the-femoral-head-intraosseous-artery
#5
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 9, 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29424098/diagnosis-of-compressed-nerve-root-in-lumbar-disc-herniation-patients-by-surface-electromyography
#6
Wei Li, Yan-Cheng Liu, Chen-Fan Zheng, Jun Miao, Hui Chen, Hai-Ying Quan, Song-Hua Yan, Kuan Zhang
OBJECTIVE: To establish a logistic regression model using surface electromyography (SEMG) parameters for diagnosing the compressed nerve root at L 5 or S 1 level in patients with lumbar disc herniation (LDH). METHODS: This study recruited 24 patients with L 5 nerve root compression and 23 patients with S 1 nerve root compression caused by LDH from May 2014 to May 2016. SEMG signals from the bilateral tibialis anterior and lateral gastrocnemius were measured. The root mean square (RMS), the RMS peak time, the mean power frequency (MPF), and the median frequency (MF) were analyzed...
February 9, 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29424017/perioperative-blood-management-strategies-for-total-knee-arthroplasty
#7
REVIEW
Qiang Lu, Hao Peng, Guan-Jin Zhou, Dong Yin
Total knee arthroplasty (TKA) often causes a significant amount of blood loss with an accompanying decline in hemoglobin and may increase the frequency of allogeneic blood transfusion rates. Unfortunately, allogeneic blood transfusions have associated risks including postoperative confusion, infection, cardiac arrhythmia, fluid overload, increased length of hospital stay, and increased mortality. Other than reducing the need for blood transfusions, reducing perioperative blood loss in TKA may also minimize intra-articular hemorrhage, limb swelling, and postoperative pain, and increase the range of motion during the early postoperative period...
February 9, 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29383856/detecting-the-presence-of-bacterial-dna-and-rna-by-polymerase-chain-reaction-to-diagnose-suspected-periprosthetic-joint-infection-after-antibiotic-therapy
#8
Xin-Yu Fang, Wen-Bo Li, Chao-Fan Zhang, Zi-da Huang, Hui-Yi Zeng, Zheng Dong, Wen-Ming Zhang
OBJECTIVE: To explore the diagnostic efficiency of DNA-based and RNA-based quantitative polymerase chain reaction (qPCR) analyses for periprosthetic joint infection (PJI). METHODS: To determine the detection limit of DNA-based and RNA-based qPCR in vitro, Staphylococcus aureus and Escherichia coli strains were added to sterile synovial fluid obtained from a patient with knee osteoarthritis. Serial dilutions of samples were analyzed by DNA-based and RNA-based qPCR...
January 30, 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29484857/biomechanical-analysis-of-a-novel-intercalary-prosthesis-for-humeral-diaphyseal-segmental-defect-reconstruction
#9
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
#10
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/29430858/clinical-gait-evaluation-of-patients-with-lumbar-spine-stenosis
#11
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/29178313/association-of-insulin-like-growth-factor-1-bone-mass-and-inflammation-to-low-energy-distal-radius-fractures-and-fracture-healing-in-elderly-women-attending-emergency-care
#12
Simona I Chisalita, Lee Ti Chong, Maciej Wajda, Lars Adolfsson, Mischa Woisetschläger, Anna Spångeus
OBJECTIVE: Elderly patients suffer fractures through low-energy mechanisms. The distal radius is the most frequent fracture localization. Insulin-like growth factor-1 (IGF1) plays an important role in the maintenance of bone mass and its levels decline with advancing age and in states of malnutrition. Our aim was to investigate the association of IGF1 levels, bone mass, nutritional status, and inflammation to low-energy distal radius fractures and also study if fracture healing is influenced by IGF1, nutritional status, and inflammation...
November 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29178312/total-hip-arthroplasty-in-hemophilia-patients-a-mid-term-to-long-term-follow-up
#13
Guo-Liang Wu, Ji-Liang Zhai, Bin Feng, Yan-Yan Bian, Chi Xu, Xi-Sheng Weng
OBJECTIVE: To report the results of mid-term to long-term follow-up after primary total hip arthroplasty (THA) in hemophiliacs and to hypothesize that THA can provide satisfactory outcomes in these patients. METHODS: Twenty-four primary THA performed in 21 hemophilia patients between 2002 and 2012 were reviewed retrospectively, including 20 cases of hemophilia A and 1 case of hemophilia B. The standard lateral approach was used for all implantations. Substitution therapy for factor VIII and activated prothrombin complex concentrates were administered to patients with hemophilia A and B, respectively...
November 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29178311/a-novel-approach-for-reconstruction-of-finger-neurocutaneous-defect-a-sensory-reverse-dorsal-digital-artery-flap-from-the-neighboring-digit
#14
Shi-Ming Feng, Qing-Qing Sun, Jian Cheng, Ai-Guo Wang
OBJECTIVE: Providing soft tissue coverage for finger neurocutaneous defects presents aesthetic and sensory challenges. A common source for reconstruction of soft tissue defects of the fingers is the same finger. However, when the donor areas are damaged by concomitant injuries, this option is not available. The present study aims to reconstruct finger neurocutaneous defects using a sensory reverse dorsal digital artery flap from the neighboring digit and to evaluate the efficacy of this technique...
November 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29178310/a-new-intraoperative-syndesmosis-instability-classification-system-utility-and-medium-term-results-in-closed-displaced-ankle-fractures
#15
Hai-Bin Qiu, Jun Jiang, Daniel Porter
OBJECTIVE: To investigate the utility and medium-term results of a new intra-operative classification system for distal tibiofibular syndesmosis injury in ankle fractures. METHODS: Between January 2010 and January 2015, 116 patients diagnosed with displaced closed Weber B and C ankle fractures were treated in our department. The etiology of injury was 56 cases of fall-sprain, 36 of traffic injury, 14 of fall from a height, and 10 of multiple injuries. After fixation of the fibular fracture, we classify syndesmosis stability as either normal or one of three grades of instability using the fibular hook traction test...
November 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29178309/antibiotic-loaded-bone-cement-as-prophylaxis-in-total-joint-replacement
#16
REVIEW
Javier Martínez-Moreno, Virginia Merino, Amparo Nácher, José Luis Rodrigo, Mónica Climente, Matilde Merino-Sanjuán
One of its most serious complications associated with arthroplasty is the development of infections. Although its prevalence is only between 0.5% and 3%, in some cases it can lead to death. Therefore, an important challenge in joint surgery is the prevention of infections when an arthroplasty is performed. The use of antibiotic-loaded cements could be a suitable tool due to numerous advantages. The main advantage of the use of antibiotic loading into bone cement derives directly from antibiotic release in the effect site, allowing achievement of high concentrations at the site of action, and minimal or no systemic toxicity...
November 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29178308/effect-of-intra-wound-vancomycin-for-spinal-surgery-a-systematic-review-and-meta-analysis
#17
REVIEW
Lun-Li Xie, Jun Zhu, Mao-Sheng Yang, Chang-Yuan Yang, Shun-Hong Luo, Yu Xie, Dan Pu
Intra-site prophylactic vancomycin in spine surgery is an effective method of decreasing the incidence of postsurgical wound infection. However, there are differences in the prophylactic programs used for various spinal surgeries. Thus, this systematic review and meta-analysis aimed to evaluate the effectiveness of using intra-wound vancomycin during spinal surgery and to explore the effects of dose-dependence and the method of administration in a subgroup analysis. A total of 628 citations or studies were searched in PubMed, Ovid, Web of Science, and Google Scholar that were published before August 2016 with the terms "local vancomycin", "intra-wound vancomycin", "intraoperative vancomycin", "intra-site vancomycin", "topical vancomycin", "spine surgery", and "spinal surgery"...
November 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29178307/influence-of-postoperative-hypertension-on-the-development-of-spinal-epidural-hematoma
#18
Tetsuro Ohba, Shigeto Ebata, Hirotaka Haro
Spinal epidural hematoma (SEH) is a rare postoperative complication but can result in catastrophic neurological deficits requiring immediate surgical evacuation of the hematoma. Knowing the risk factors for postoperative SEH can help surgeons stratify patients. Therefore, to identify possible risk factors for postoperative SEH, we reviewed 6 clinical cases and examined the relation between postoperative hypertension and the risk of developing SEH. A retrospective review was conducted of 1282 consecutive patients who underwent spinal surgery at a single institution between 2010 and 2015...
November 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29178306/outcomes-of-short-fusion-versus-long-fusion-for-adult-degenerative-scoliosis-a-systematic-review-and-meta-analysis
#19
REVIEW
Kevin Phan, Joshua Xu, Monish M Maharaj, Julian Li, Jun S Kim, John Di Capua, Sulaiman Somani, Kimberly-Anne Tan, Ralph J Mobbs, Samuel K Cho
The objective of this study was to evaluate differences in clinical and radiographic outcomes between short (<3 levels) and long (≥3 levels) fusions in the setting of degenerative lumbar scoliosis. A literature search was performed from six electronic databases. The key terms of "degenerative scoliosis" OR "lumbar scoliosis" AND "fusion" were combined and used as MeSH subheadings. From relevant studies identified, demographic data, complication rates, Oswestry Disability Index (ODI), and radiographic parameters were extracted and the data was pooled and analyzed...
November 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29178305/en-bloc-resection-with-the-assistance-of-video-assisted-thoracoscopy-for-left-lower-lung-cancer-invading-thoracic-vertebrae-and-rib-a-case-report
#20
Yun Liang, Peng Liu, Xiao-Gang Zhou, Xi-Lei Li, Hong Lin, Nong Chen, Di Ge, Jian Dong
Lung cancer invading the spine was previously considered unresectable and fatal and, consequently, there are few reports focusing on tumors located in the lower lung lobe and invading the spine. With the development of spinal instrumentation and surgical techniques, and wider acceptance of spondylectomy by surgeons, radical surgical resection has become feasible. Here, we present a case of a male patient with a left lower lung cancer invading thoracic vertebrae who underwent complete resection with sagittal en bloc hemivertebrectomy with video-assisted thoracoscopy...
November 2017: Orthopaedic Surgery
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