Effects of COVID-19 on short-term outcomes of hip arthroplasty: a multicenter, retrospective, propensity score matched study by Shih-Hui Peng, Yu-Chih Lin, Chih-Hsiang Chang, Chih-Chien Hu, Lan-Yan Yang, Yuhan Chang

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Common spine codes are reimbursed 13% less by Medicaid compared to Medicare, ranging from 46% to 160% by state by Adam P. Henderson, BS, M. Lane Moore, MD, MBA, Camryn S. Payne, BA, Jack M. Haglin, MD, MS, Joseph C. Brinkman, MD, Paul R. Van Schuyver, MD, Joshua S. Bingham, MD, Michael S. Chang, MD

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A nomogram for predicting mortality risk in geriatric patients with hip fractures complicated by pneumonia: A multicenter study by Kaiming Zhang, Xiangwei Li, Yujia Xiao, Cheng Zhou, Yu Liu, Fan Zhen, Hao Zhang, Mao Nie

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Synovitis, Acne, Pustulosis, Hyperostosis, and Osteitis Syndrome with Purely Osteolytic, Not Osteosclerotic, Lesions Mimicking a Malignant Tumor by Hideyuki Kinoshita, Takeshi Ishii, Hiroto Kamoda, Yoko Hagiwara, Toshinori Tsukanishi, Sumihisa Orita, Kazuhide Inage, Naoya Hirosawa, Seiji Ohtori, Tsukasa Yonemoto

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A synthetic chronogenetic gene circuit for programmed circadian drug delivery by Lara Pferdehirt, Anna R. Damato, Kristin L. Lenz, Maria F. Gonzalez-Aponte, Daniel Palmer, Qing-Jun Meng, Erik D. Herzog, Farshid Guilak

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Contrasting results in sacroiliac joint fusion studies: the role of bilateral complaints by Nick Kampkuiper, Femke Schröder, Marjolein Brusse-Keizer, Jorm Nellensteijn

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Inferior Lateral Genicular Artery Injury during Anterior Cruciate Ligament Reconstruction Surgery by J. M. Lamo-Espinosa, R. Llombart Blanco, J. R. Valentí

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Effectiveness and Safety of Preoperative Halo Gravity Traction-Assisted Posterior Spinal Fusion Surgery for Severe and Rigid Scoliosis: A Comparative Matched-Cohort Study by Yangpu Zhang, Bo Han, Jianqiang Wang, Yuzeng Liu, Yiqi Zhang, Yong Hai, Lijin Zhou

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A Novel Unilateral Bi/Multi‐Portal Endoscopic Transforaminal Interbody Fusion Utilizing Uniaxial Spinal Endoscope Instead of Arthroscope: Technical Note and Preliminary Clinical Re... by Liyu Yang, Long Zhou, Min Qiu, Feng Liang, Liqing Yang, Qin Fu, Gen Ba

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Preoperative Predictors of Soft Tissue Releases Required for Femoral Exposure in Direct Anterior Total Hip Arthroplasty by Michael S. Barnum, MD, Bryan M. Grommersch, MD, Samuel Hovland, BS, George J. Haidukewych, MD, Cody C. Green, MD

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Construction and validation of a nomogram predictive model for assessing the risk of surgical site infections following posterior lumbar fusion surgery by Jin-Zhou Luo, Jie-Zhao Lin, Qi-Fan Chen, Chang-Jian Yang, Chu-Song Zhou

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Local Inflammation in Fracture Hematoma: Results from a Combined Trauma Model in Pigs by K. Horst, D. Eschbach, R. Pfeifer, S. Hübenthal, M. Sassen, T. Steinfeldt, H. Wulf, S. Ruchholtz, H. C. Pape, F. Hildebrand

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Global visualization of adolescent idiopathic scoliosis treatment: a bibliometric analysis by Xiaodong Zheng, Xiaodong Zheng, Wenjin Han, Shan Gao, MengLong Jia, LiJun Liu, LiJun Liu, Longtan Yu

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Effects of modified reverse sural neurocutaneous flap repair on wound healing in patients with soft tissue defects of the foot and ankle by Shun Hong Luo, Yong Ping Li, Man Hua Liu, Yu Xie, Jian Li, Hao Yu, Chun Hua He

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3D-printed constructs deliver bioactive cargos to expedite cartilage regeneration by Rong Jiao, Xia Lin, Jingchao Wang, Chunyan Zhu, Jiang Hu, Huali Gao, Kun Zhang

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Reconstructive surgery to preserve ankle function in a 5-year-old girl with bilobed distal tibia in an unclassified case of tibial hemimelia: a case report by Alireza Ghaznavi, Miad Nosratpour, Seyed Mohammadmisagh Moteshakereh, Ava Parvandi, Shayan Amiri

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Changes in interpersonal violence and utilization of trauma recovery services at an urban trauma center in the United States during the COVID-19 pandemic: a retrospective, comparat... by Kevin Y. Zhu, Kristie J. Sun, Mary A. Breslin, Mark Kalina Jr., Tyler Moon, Ryan Furdock, Heather A. Vallier

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Ultrasound-guided vs. fluoroscopy-guided percutaneous leverage reduction for severely displaced radial neck fractures in children: a comparative analysis of clinical and radiologic... by Xing Wu, Jingdong Xia, Xiongtao Li, Xiaoliang Chen, Si Wang, Xiantao Shen

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Integrated analysis of bioinformatics, mendelian randomization, and experimental validation reveals novel diagnostic and therapeutic targets for osteoarthritis: progesterone as a p... by Ziyu Weng, Chenzhong Wang, Bo Liu, Yi Yang, Yueqi Zhang, Chi Zhang

“…Abstract Background Osteoarthritis (OA), characterized by progressive degeneration of cartilage and reactive proliferation of subchondral bone, stands as a prevalent condition in orthopedic clinics. However, the precise mechanisms underlying OA pathogenesis remain inadequately explored. …”
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Evaluation of supraspinatus muscle-to-fat infiltration for rotator cuff tear patients using dual-energy computed tomography by Naoki Takatori, MD, PhD, Yoshiyasu Uchiyama, MD, PhD, Takeshi Imai, MD, PhD, Masahiko Watanabe, MD, PhD

“…Methods: This study examined 44 patients (49 shoulders; 21 men, 23 women; mean age, 69 years) who underwent magnetic resonance imaging (MRI) and dual-energy CT. Three orthopedic surgeons evaluated fatty infiltration of the Ssp using the Goutallier classification of MRI, and three orthopedic surgeons measured attenuation (in Hounsfield units) for the same slice using dual-energy CT. …”
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