A Rare Case of an Irreducible Patella Dislocation by Dimitri E. Delagrammaticas, Scott D. Cordes

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Functional alignment is a feasible alignment strategy in robotic assisted total knee arthroplasty for knee osteoarthritis with extra-articular deformity – A case series by Eu Wei Cheong, Yuik Ho Jade Pei, Kunalan G.

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The influence of body mass index on efficacy and outcomes of percutaneous transforaminal endoscopic surgery (PTES) for the treatment of lumbar degenerative diseases: a retrospectiv... by Chenyang Zhuang, Yun Xu, Hong Lin, Yutong Gu

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Biomechanical Assessment of Three Osteosynthesis Constructs by Periprosthetic Humerus Fractures by Afif Harb, Bastian Welke, Emmanouil Liodakis, Sam Razaeian, Dafang Zhang, Christian Krettek, Christof Hurschler, Nael Hawi

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Sensory alterations and immunological changes during the chronification of postsurgical pain: a study protocol for a prospective observational cohort study by Leo Koenderman, Niels Eijkelkamp, Frank J P M Huygen, Roel J H Custers, Marjelle E C van Driel, Nadine van Veenendaal, Lisette Margaretha Vernooij, L Timmerman, Diyar Delawi, M Rijsdijk

“…The ‘Sensory Changes and Immunological parameters in Postsurgical pain’ study (SCIP-Pain study) was designed to test this hypothesis and identify sensory alterations and changes in the immunological response that are related to the development of CPSP with neuropathic features.Methods and analysis This protocol describes the SCIP-Pain study—an ongoing prospective observational cohort study involving 150 adult patients undergoing elective lower extremity orthopaedic surgery. Study participants complete questionnaires, undergo quantitative sensory testing (QST) and provide blood samples to assess the immunological response at various time points: before surgery, 2 weeks and 3 months after surgery. …”
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Incidence and risk factors for mortality of vertebral osteomyelitis: a retrospective analysis using the Japanese diagnosis procedure combination database by Hideo Yasunaga, Hirotaka Chikuda, Kiyohide Fushimi, Hiromasa Horiguchi, Toru Akiyama, Kazuo Saita

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High-Grade Leiomyosarcoma Arising in a Previously Replanted Limb by Tiffany J. Pan, Liron Pantanowitz, Kurt R. Weiss

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Relationship between humeral head translation, spur formations, and the locations of tendon tears in massive rotator cuff tears by Yuki Yoshida, Atsushi Yoshida

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Tendon Stem/Progenitor Cells and Their Interactions with Extracellular Matrix and Mechanical Loading by Chuanxin Zhang, Jun Zhu, Yiqin Zhou, Bhavani P. Thampatty, James H-C. Wang

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Advanced Alveolar Soft Part Sarcoma Treated with Pazopanib over Three Years by Yoji Shido, Yukihiro Matsuyama

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Cellular Plasticity in Prostate Cancer Bone Metastasis by Dima Y. Jadaan, Mutaz M. Jadaan, John P. McCabe

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Resilient orthopaedic generation: The orthopaedic registrars who started training in 2020 by Collen Sandile Nkosi

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An Acta Orthopaedica educational article: Treatment of pediatric spondylolysis and spondylolisthesis by Ilkka Helenius, Ella Virkki, Taavi Toomela, Daniel Studer, Martin Gehrchen, Matti Ahonen

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Subacromial Impingement Syndrome Caused by a Voluminous Subdeltoid Lipoma by Jean-Christophe Murray, Stéphane Pelet

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Effect of individual spinal muscle activities on upright posture using a human body finite element model by Yuko Nakahira, Masami Iwamoto, Tatsuya Igawa, Ken Ishii

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Ossification of the Interosseous Membrane of the Leg in a Football Player: Case Report and Review of the Literature by Roberto Postacchini, Stefano Carbone, Marco Mastantuono, Carlo Della Rocca, Franco Postacchini

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An Optimized Spline-Based Registration of a 3D CT to a Set of C-Arm Images by S. Jonic, P. Thévenaz, G. Zheng, L.-P. Nolte, M. Unser

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A Novel Surgical Technique for Fixation of Recurrent Acromioclavicular Dislocations: AC Dog Bone Technique in Combination with Autogenous Semitendinosus Tendon Graft by Patrick Holweg, Wolfgang Pichler, Gerald Gruber, Ellen Tackner, Franz Josef Seibert, Patrick Sadoghi, Gloria Hohenberger

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Burnout in New Zealand resident doctors: a cross-sectional study of prevalence and risk factors by Denys Shay, Susanna Every-Palmer, Alex B Boyle, Tanushk Martyn, Earle Savage, Simon B M MacLean

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Association of neighborhood level socioeconomic status and patient reported clinical improvement following total shoulder arthroplasty by Caleb Morgan, MD, Amanda Firoved, MOT, OTR, Patrick J. Denard, MD, Justin W. Griffin, MD

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