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  1. Range of motion after total knee arthroplasty (TKA) can impact patients’ daily lives. Nevertheless, flexion contracture (FC) often recurs after TKA, even upon achieving full extension intraoperatively. This st...

    Authors: Tomofumi Kinoshita, Kazunori Hino, Tatsuhiko Kutsuna, Kunihiko Watamori, Takashi Tsuda and Hiromasa Miura
    Citation: Journal of Experimental Orthopaedics 2021 8:87
  2. The aims of this study were to (1) investigate the effect of hydrodilatation in frozen shoulder patients on objective indices of shoulder functionality and subjective outcomes of pain, mobility, kinesiophobia,...

    Authors: Philippe Debeer, Olivia Commeyne, Ianthe De Cupere, Dorien Tijskens, Filip Verhaegen, Wim Dankaerts, Laurence Claes and Glenn Kiekens
    Citation: Journal of Experimental Orthopaedics 2021 8:85
  3. To assess a novel method of three-dimensional (3D) joint line (JL) restoration based on the contralateral tibia and fibula.

    Authors: Sandro Hodel, Anna-Katharina Calek, Philipp Fürnstahl, Sandro F. Fucentese and Lazaros Vlachopoulos
    Citation: Journal of Experimental Orthopaedics 2021 8:84
  4. To qualitatively evaluate the current evidence reporting outcomes of intra-articular injection of orthobiologics in patients undergoing high tibial osteotomy (HTO) for osteoarthritis of the knee.

    Authors: Brjan Kaiji Betzler, Aiman Haziq Bin Muhammad Ridzwan Chew and Hamid Rahmatullah Bin Abd Razak
    Citation: Journal of Experimental Orthopaedics 2021 8:83
  5. The main purpose of this study was to investigate clinical and radiological outcomes of medial meniscus posterior root tear (MMPRT) repair in knees with advanced articular cartilage degeneration and osteoarthr...

    Authors: Nathan D. M. Hopkins and Steven Lawrie
    Citation: Journal of Experimental Orthopaedics 2021 8:82
  6. Our primary objectives were to (1) describe current approaches for kinetic measurements in individuals following anterior cruciate ligament reconstruction (ACLR) and (2) suggest considerations for methodologic...

    Authors: Wasim Labban, Meredith Stadnyk, Mark Sommerfeldt, Stephanie Nathanail, Liz Dennett, Lindsey Westover, Thaer Manaseer and Lauren Beaupre
    Citation: Journal of Experimental Orthopaedics 2021 8:81
  7. The knee stiffness acquired following an Anterior Cruciate Ligament (ACL) injury might affect clinical knee tests, i.e., the pivot-shift maneuver. In contrast, the motor effects of spinal anesthesia could favo...

    Authors: Gastón Caracciolo, Roberto Yáñez, Rony Silvestre, Carlos De la Fuente, Héctor Zamorano, Alejandra Ossio, Lars Strömbäck, Sebastian Abusleme and Felipe P. Carpes
    Citation: Journal of Experimental Orthopaedics 2021 8:80
  8. In this study we compare the biomechanical properties of a novel suture technique that we developed called the continuous double knots technique for repairing flexor tendon injuries with the standard 4-strand ...

    Authors: Sunton Wongsiri and Wongthawat Liawrungrueang
    Citation: Journal of Experimental Orthopaedics 2021 8:79
  9. Adjusting the gap lengths to ensure equal lengths in both extension and flexion during total knee arthroplasty (TKA) is important for achieving successful outcomes. We designed a new pre-cut trial component (P...

    Authors: Makoto Kawasaki, Ryutaku Kaneyama, Hitoshi Suzuki, Teruaki Fujitani, Manabu Tsukamoto, Ken Sabanai, Toru Yoshioka, Nobukazu Okimoto, Ryuji Nagamine and Akinori Sakai
    Citation: Journal of Experimental Orthopaedics 2021 8:77
  10. Anterior cruciate ligament (ACL) injuries are often combined with lesions of the medial collateral ligament (MCL). The aim of this study was to evaluate treatment outcome of combined acute ACL and MCL lesions ...

    Authors: Patricia M. Lutz, Louisa S. Höher, Matthias J. Feucht, Jan Neumann, Daniela Junker, Klaus Wörtler, Andreas B. Imhoff and Andrea Achtnich
    Citation: Journal of Experimental Orthopaedics 2021 8:76
  11. Mast cells are multifunctional in osteoarthritis (OA), and infiltration of activated mast cells likely contributes to disease severity and progression. However, the detailed mechanisms of action are unclear. T...

    Authors: Junpei Dan, Masashi Izumi, Hiroko Habuchi, Osami Habuchi, Shogo Takaya, Yusuke Kasai, Ryuzo Hayashi, Koji Aso, Takahiro Ushida and Masahiko Ikeuchi
    Citation: Journal of Experimental Orthopaedics 2021 8:75
  12. The most common femoral short stems available on the market can, in principle, be divided with regard to their anchoring concepts into a calcar loading and a shortened tapered design. The purpose of this study...

    Authors: Tobias Freitag, Ralf Bieger, Hartmuth Kiefer, Daniel Dornacher, Heiko Reichel, Anita Ignatius and Lutz Dürselen
    Citation: Journal of Experimental Orthopaedics 2021 8:74
  13. Vitamin D deficiency is related to carpal tunnel syndrome symptoms. Correcting vitamin D levels by supplementation was supposed to improve carpel tunnel symptoms, though there is a lack of aggregated data abou...

    Authors: Chirathit Anusitviwat, Porames Suwanno and Sitthiphong Suwannaphisit
    Citation: Journal of Experimental Orthopaedics 2021 8:73
  14. The aim of this cadaver study was to evaluate an original technique for measuring posterior tibial translation based on an angle value instead of a distance value, with and without posterior stress application...

    Authors: M. Severyns, M.-E. Rollet, T. Vendeuvre, S. Pesenti, A. Benzakour and J.-L. Rouvillain
    Citation: Journal of Experimental Orthopaedics 2021 8:72
  15. The amount of passive anterior tibial translation (ATT) is known to be correlated to the amount of posterior tibial slope (PTS) in both anterior cruciate ligament-deficient and reconstructed knees. Slope-alter...

    Authors: M.J.M Zee, M.N.J Keizer, L Dijkerman, J.J.A.M van Raaij, J.M. Hijmans and R.L. Diercks
    Citation: Journal of Experimental Orthopaedics 2021 8:71
  16. Purpose: Effusion, impaired muscle function and knee instability are considered as some of the most important factors effecting outcome following anterior cruciate ligament reconstruction (ACL-R) but the impac...

    Authors: Kathleen Andrä, Enes Kayaalp, Robert Prill, Lars Irlenbusch, Eckehard Liesaus, Tilo Trommer, Peter Ullmann and Roland Becker
    Citation: Journal of Experimental Orthopaedics 2021 8:70
  17. This study aimed to investigate the rate at which patients returned to sports after open wedge high tibial osteotomy and identify the continuity of sports activity post-operatively.

    Authors: Shugo Maeda, Daisuke Chiba, Eiji Sasaki, Tetsushi Oyama, Tomoyuki Sasaki, Hironori Otsuka and Yasuyuki Ishibashi
    Citation: Journal of Experimental Orthopaedics 2021 8:68
  18. “Biologic therapies” in the field of orthopaedic surgery and sports medicine, so called orthobiologics, have been gaining significant interest from physicians and patients, with increasing usage over the recen...

    Authors: J. J. de Graeff, M. P. J. van den Bekerom, B. L. van Meer and J. A. C. Zijl
    Citation: Journal of Experimental Orthopaedics 2021 8:66
  19. To evaluate the clinical outcome after opening-wedge high tibial osteotomy (OWHTO) and to determine the critical factors for a poor clinical outcome after OWHTO in patients aged over 65 years.

    Authors: Shuhei Otsuki, Hitoshi Wakama, Kuniaki Ikeda, Nobuhiro Okuno, Yoshinori Okamoto, Tomohiro Okayoshi, Junya Matsuyama and Masashi Neo
    Citation: Journal of Experimental Orthopaedics 2021 8:65
  20. Development and validation of an animal model of labral healing would facilitate translation of novel surgical and biological strategies to improve glenolabral healing. The purpose of this study was to charact...

    Authors: Christopher J. Como, Benjamin B. Rothrauff, Peter G. Alexander, Albert Lin and Volker Musahl
    Citation: Journal of Experimental Orthopaedics 2021 8:63
  21. The treatment of osteochondral lesions is challenging and no consensus has been established about the best option for restoring both cartilage and subchondral bone. Multilayer collagen-hydroxyapatite scaffolds...

    Authors: Martina Ricci, Daniele Tradati, Alessio Maione, Francesco Mattia Uboldi, Eva Usellini and Massimo Berruto
    Citation: Journal of Experimental Orthopaedics 2021 8:62
  22. One of the major contributors to the progression of knee osteoarthritis (OA) is the condition of loading in the knee joint. Innovatively designed load-sharing implants may be effective in terms of reducing joi...

    Authors: Mehdi Saeidi, Piaras A. Kelly, Christian Netzel, Miriam Scadeng, Pranesh Kumar, Deborah Prendergast, Thomas Neitzert and Maziar Ramezani
    Citation: Journal of Experimental Orthopaedics 2021 8:61
  23. The purpose of this investigation was to systematically review the contemporary literature to determine if a lateral augmentation (LA) added to an Anterior Cruciate Ligament Reconstruction (ACLR) provides bett...

    Authors: Lucas Beckers, Thiago Vivacqua, Andrew D. Firth and Alan M. J. Getgood
    Citation: Journal of Experimental Orthopaedics 2021 8:59
  24. Volumetric muscle loss is a uniquely challenging pathology that results in irrecoverable functional deficits. Furthermore, a breakthrough drug or bioactive factor has yet to be established that adequately impr...

    Authors: Michael E. Whitely, Patrick B. Collins, Masahiro Iwamoto and Joseph C. Wenke
    Citation: Journal of Experimental Orthopaedics 2021 8:58
  25. (1) To evaluate the biomechanical properties of a porcine flexor digitorum superficialis tendon graft with preserved muscle fibers and (2) to compare these results with the biomechanical properties of a porcin...

    Authors: Luis Fernando Zukanovich Funchal, Diego Costa Astur, André Luiz Almeida Pizzolatti, Arthur Paiva Grimaldi, Andrew Esteban Jimenez, Ari Digiácomo Ocampo Moré, Carlos Rodrigo de Mello Roesler and Moises Cohen
    Citation: Journal of Experimental Orthopaedics 2021 8:57
  26. The aim of this study was to analyze the clinical results provided by multi-layer cell-free scaffolds for the treatment of knee osteochondral defects.

    Authors: Angelo Boffa, Luca Solaro, Alberto Poggi, Luca Andriolo, Davide Reale and Alessandro Di Martino
    Citation: Journal of Experimental Orthopaedics 2021 8:56
  27. The benefits of providing static stretching exercise targeting the hips in patients with non-specific Low Back Pain (NSLBP) are not well established. The objective of the study was to verify the effects of sta...

    Authors: Mohamadreza Hatefi, Farideh Babakhani and Mohadeseh Ashrafizadeh
    Citation: Journal of Experimental Orthopaedics 2021 8:55
  28. This study aimed to evaluate the excessive anterior tibial translation (ATT) and muscle strength of patients with ramp lesions. We hypothesised that the higher ATT, lower hamstring-to-quadriceps (HQ) ratio, an...

    Authors: Kazuki Asai, Junsuke Nakase, Rikuto Yoshimizu, Mitsuhiro Kimura and Hiroyuki Tsuchiya
    Citation: Journal of Experimental Orthopaedics 2021 8:54
  29. The goal of this preliminary report was to show the use of novel Ultrasound (US) technology for anterior cruciate ligament (ACL) reconstruction surgery and evaluate its feasibility for the creation of a rectan...

    Authors: Romain Seil, Caroline Mouton and Christophe Jacquet
    Citation: Journal of Experimental Orthopaedics 2021 8:53

    The Correction to this article has been published in Journal of Experimental Orthopaedics 2021 8:69

  30. A systematic review of the literature has been carried out to assess the actual evidence of the use of augmented reality in total knee arthroplasty (TKA). We then conducted a pilot clinical study to examine th...

    Authors: V. Iacono, L. Farinelli, S. Natali, G. Piovan, D. Screpis, A. Gigante and C. Zorzi
    Citation: Journal of Experimental Orthopaedics 2021 8:52
  31. High-grade pivot shift in the anterior cruciate ligament (ACL) injured knee is a risk factor for postoperative residual pivot shift. Procedures in addition to ACL reconstruction such as anterolateral ligament ...

    Authors: Yusuke Kawanishi, Makoto Kobayashi, Sanshiro Yasuma, Hiroaki Fukushima, Jiro Kato, Atsunori Murase, Tetsuya Takenaga, Masahito Yoshida, Gen Kuroyanagi, Yohei Kawaguchi, Yuko Nagaya, Hideki Murakami and Masahiro Nozaki
    Citation: Journal of Experimental Orthopaedics 2021 8:51
  32. The study aims were to assess the kinematic data, Internal-External (IE) rotation, and Antero-Posterior (AP) translation of the contact points between the femoral condyles and polyethylene insert and to develo...

    Authors: Agostino Igor Mirulla, Laura Bragonzoni, Stefano Zaffagnini, Tommaso Ingrassia, Raffaele Zinno and Bernardo Innocenti
    Citation: Journal of Experimental Orthopaedics 2021 8:50
  33. Effect of ultrasound guided injections of autologous ASCs in chronic recalcitrant patellar tendinopathy.

    Authors: Miguel A. Khoury, Karim Chamari, Montassar Tabben, Khalid Alkhelaifi, Trueba Ricardo, Couto Damián and Pieter D’hooghe
    Citation: Journal of Experimental Orthopaedics 2021 8:49
  34. The aim of the present study was to present clinical and radiological outcome of a hip fracture-dislocation of the femoral head treated with biomimetic osteochondral scaffold.

    Authors: Alessandro Casiraghi, Claudio Galante, Marco Domenicucci, Stefano Cattaneo, Andrea Achille Spreafico, Marcello Motta, Paolo Capitani and Giuseppe Milano
    Citation: Journal of Experimental Orthopaedics 2021 8:48
  35. Correction osteotomies around the knee are common methods for the treatment of varus or valgus malalignment of the lower extremity. In recent years, patient specific instrumentation (PSI) guides were introduce...

    Authors: Peter Savov, Mara Hold, Maximilian Petri, Hauke Horstmann, Christian von Falck and Max Ettinger
    Citation: Journal of Experimental Orthopaedics 2021 8:47
  36. The aim of this paper was to report the results presented in the session “Does practice of meniscus surgery change over time?” of the 2021 MENISCUS webinar held online on January 30th 2021.

    Authors: Christophe Jacquet, Caroline Mouton, Roland Becker, Hideyuki Koga, Matthieu Ollivier, Peter Verdonk, Philippe Beaufils and Romain Seil
    Citation: Journal of Experimental Orthopaedics 2021 8:46
  37. Paediatric and adolescent ACL injuries are an emerging health burden, increasing at a higher rate than in adults. They compromise quality of life, affect knee structure and function, lead to the early developm...

    Authors: Caroline Mouton, Håvard Moksnes, Rob Janssen, Christian Fink, Stefano Zaffagnini, Juan Carlos Monllau, Guri Ekås, Lars Engebretsen and Romain Seil
    Citation: Journal of Experimental Orthopaedics 2021 8:45
  38. To quantify the influence of the femoral tunnel exit (FTE) on the graft bending angle (GBA) and GBA-excursion throughout a full range of motion (ROM) in single-bundle anterior cruciate ligament (ACL) reconstru...

    Authors: Sandro Hodel, Sylvano Mania, Lazaros Vlachopoulos, Philipp Fürnstahl and Sandro F. Fucentese
    Citation: Journal of Experimental Orthopaedics 2021 8:44
  39. The authors retrieved the records of 4 patients that exhibited unusual structural anomalies or pathologies, notably the presence of a fibrous band at the anterior aspect of the tibiotalar joint, observed durin...

    Authors: Philippe Beaudet, Floris van Rooij, Mo Saffarini and Alexis Nogier
    Citation: Journal of Experimental Orthopaedics 2021 8:42
  40. The purpose of this study was to examine the effect of the use of an active assisted cycle ergometer as an adjunct to post-operative treatment following total knee arthroplasty.

    Authors: P. Sanzo, S. Niccoli, K. Droll, D. Puskas, C. Cullinan and S. J. Lees
    Citation: Journal of Experimental Orthopaedics 2021 8:41
  41. The purpose of this study was to perform a scoping review of published literature reporting on surgical management of tibial cysts which developed after ACLR.

    Authors: Nuno Camelo Barbosa, João Pedro Campos, Vânia Capelão, Vikram Kandhari, Thais Dutra Vieira and Bertrand Sonnery-Cottet
    Citation: Journal of Experimental Orthopaedics 2021 8:40
  42. Despite practised for decades, the planning of osteotomy around the knee, commonly using the Mikulicz-Line, is only empirically based, clinical outcome inconsistent and the target angle still controversial. A ...

    Authors: Margit Biehl, Philipp Damm, Adam Trepczynski, Stefan Preiss and Gian Max Salzmann
    Citation: Journal of Experimental Orthopaedics 2021 8:39

    The Correction to this article has been published in Journal of Experimental Orthopaedics 2021 8:43

  43. The optimal rehabilitation strategy after a unicompartmental knee arthroplasty (UKA) is unclear. This study aims to compare the effect of transitioning from a supervised to a self-management rehabilitation reg...

    Authors: Adam Omari, Lina Holm Ingelsrud, Thomas Quaade Bandholm, Susanne Irene Lentz, Anders Troelsen and Kirill Gromov
    Citation: Journal of Experimental Orthopaedics 2021 8:38
  44. To evaluate the intra and interobserver reproducibility of a new goniometric method for evaluating the isolated passive range of motion of the glenohumeral joint in an outpatient setting.

    Authors: Miguel Angel Ruiz Ibán, Susana Alonso Güemes, Raquel Ruiz Díaz, Cristina Victoria Asenjo Gismero, Alejandro Lorente Gomez and Jorge Diaz Heredia
    Citation: Journal of Experimental Orthopaedics 2021 8:37