Articles

Factors affecting aseptic loosening in primary total knee replacements: an in vitro study

Implant surface integrity and cement bonding are assumed to be sufficient in primary total knee replacements to stabilize implants for extended wear without concerns over delamination and loosening. Yet there ...

Authors: David Lionberger, Laura Wattenbarger, Christopher Conlon and Timothy J. Walker

PET/MRI reveals ongoing metabolic activity in ACL grafts one year post-ACL reconstruction

To use serial PET/MRI imaging to radiographically evaluate the metabolic activity of the ACL graft over the first post-operative year.

Authors: Seth Korbin, Michael Salerno, Justice U. Achonu, Mingqian Huang, Paul Vaska, Amanda Pawlak, David E. Komatsu and James M. Paci

Viscosupplementation may preserve tibial cartilage and collagen in osteoarthritis: findings from a preclinical model of osteoarthritis

Intraarticular (IA) hyaluronic acid (HA) injection is used to reduce pain and improve mobility in knee osteoarthritis (OA). Little is known about histopathological changes underlying HA efficacy. This study in...

Authors: John Lokhnauth, Kevin E. Driscoll, Alison Bendele, Faizan Niazi, Alfred Liang and Crilles C. Larsen

Low lordosis is a common finding in young lumbar disc herniation patients

The sagittal alignment of the lumbar spine and pelvis can be classified into several subtypes. It has been suggested that the risk of developing certain pathologies, such as a lumbar disc herniation (LDH) is a...

Authors: Joel Beck, Helena Brisby, Adad Baranto and Olof Westin

Four-strand hamstring graft is stiffer than a tripled semitendinosus graft in anterior cruciate ligament reconstruction: a cadaveric study

The aim of this study was to compare the biomechanics of a four-strand hamstring graft with a tripled semitendinosus graft, with and without adjustable extra-cortical button fixation, in a cadaveric model.

Authors: Frans J. A. Hagemans, Karlijn L. J. van Overvest, Jacco A. C. Zijl and Duncan E. Meuffels

Meniscus sizing using three-dimensional models of the ipsilateral tibia plateau based on CT scans – an experimental study of a new sizing approach

Selection of a meniscus allograft with a similar three-dimensional (3D) size is essential for good clinical results in meniscus allograft surgery. Direct meniscus sizing by MRI scan is not possible in total me...

Authors: Silvan Beeler, Lazaros Vlachopoulos, Lukas Jud, Reto Sutter, Tobias Götschi, Philipp Fürnstahl and Sandro F. Fucentese

The role of the orthopaedic surgeon in the COVID-19 era: cautions and perspectives

The current coronavirus disease 2019 (COVID-19) pandemic has revolutionized global healthcare in an unprecedented way and with unimaginable repercussions. Resource reallocation, socioeconomic confinement and r...

Authors: Luca Ambrosio, Gianluca Vadalà, Fabrizio Russo, Rocco Papalia and Vincenzo Denaro

An interpretation of intraosseous perfusion physiology and the effect of steroids

Authors: Michael Beverly and David Murray

Correction to: Anteromedial positioning of the femoral tunnel in Anterior Cruciate Ligament reconstruction is the best option to avoid revision: a single surgeon registry

An amendment to this paper has been published and can be accessed via the original article.

Authors: Ricardo de Paula Leite Cury, Artur Mistieri Simabukuro, Victor de Marques Oliveira, Diego Escudeiro, Pedro Baches Jorge, Fabrício Roberto Severino and Luiz Gabriel Betoni Guglielmetti

Healthy subjects with lax knees use less knee flexion rather than muscle control to limit anterior tibia translation during landing

It has been reported that there is no correlation between anterior tibia translation (ATT) in passive and dynamic situations. Passive ATT (ATTp) may be different to dynamic ATT (ATTd) due to muscle activation ...

Authors: Michèle N. J. Keizer, Juha M. Hijmans, Alli Gokeler, Anne Benjaminse and Egbert Otten

Evaluation of a novel portable three-dimensional scapular kinematics assessment system with inter and intraobserver reproducibility and normative data for healthy adults

To evaluate the intra and interobserver reproducibility of a new system that assesses the three-dimensional humero-scapulo-thoracic kinematics using wearable technology in an outpatient setting. To obtain norm...

Authors: Miguel Angel Ruiz Ibán, Andrea Paniagua Gonzalez, Marco Muraccini, Cristina Asenjo Gismero, Alessandro Varini, Antonella Berardi and Matteo Mantovani

Tibial condylar valgus osteotomy – indications and technique

To describe the indications for, and surgical technique of, tibial condylar valgus osteotomy (TCVO).

Authors: Umito Kuwashima, Akihiko Yonekura, Masafumi Itoh, Junya Itou and Ken Okazaki

A comparison of bone conductivity on titanium screws inserted into the vertebra using different surface processing

Antibacterial iodine-supported titanium has an anodized oxide layer; thus, it can be expected to have a higher osteoconductivity than untreated titanium. This study aimed to compare the osteoconductivity betwe...

Authors: Takashi Ota, Satoru Demura, Satoshi Kato, Katsuhito Yoshioka, Hiroyuki Hayashi, Kei Inoue, Kazuya Shinmura, Noriaki Yokogawa, Toshiharu Shirai, Hideki Murakami and Hiroyuki Tsuchiya

COVID-19 - ESSKA guidelines and recommendations for resuming elective surgery

The roadmap to elective surgery resumption after this COVID-19 pandemic should be progressive and cautious. The aim of this paper was to give recommendations and guidelines for resuming elective orthopedic sur...

Authors: Caroline Mouton, Michael T. Hirschmann, Matthieu Ollivier, Romain Seil and Jacques Menetrey

Biomechanical testing of fixed and adjustable femoral cortical suspension devices for ACL reconstruction under high loads and extended cyclic loading

To compare loop elongation after 5000 cycles, loop-elongation at failure, and load at failure of the fixed-loop G-Lok device and three adjustable-loop devices (UltraButton, RigidLoop Adjustable and ProCinch RT...

Authors: Sarvpreet Singh, Sonia Ramos-Pascual, Kinga Czerbak, Muzaffar Malik, Peter J. Schranz, Anthony W. Miles and Vipul Mandalia

CARGEL Bioscaffold improves cartilage repair tissue after bone marrow stimulation in a minipig model

To gain knowledge of the repair tissue in critically sized cartilage defects using bone marrow stimulation combined with CARGEL Bioscaffold (CB) compared with bone marrow stimulation (BMS) alone in a validated...

Authors: K. Hede, B. B. Christensen, M. L. Olesen, J. S. Thomsen, C. B. Foldager and M. C. Lind

MRI visibility of the anterolateral ligament and the deep structures of the iliotibial tract

The visualization of potentially injured anatomical structures is crucial. Lately the anterolateral ligament (ALL) and the deep structures of the iliotibial tract (ITT) have been of increased clinical interest...

Authors: Michael Liebensteiner, Armin Runer, Christof Kranewitter, Philipp Nachtigal, Johannes Giesinger, Dietmar Dammerer and Benjamin Henninger

Femoral revision knee Arthroplasty with Metaphyseal sleeves: the use of a stem is not mandatory of a structural point of view

Although metaphyseal sleeves are usually used with stems, little is known about the exact contribution/need of the stem for the initial sleeve-bone interface stability, particularly in the femur, if the intram...

Authors: F. Fonseca, A. Sousa and A. Completo

Flexion First Balancer: description of new technique in TKA to reproduce joint line and pre-disease mechanical alignment

A considerable proportion of patients (19%) are dissatisfied after total knee arthroplasty (TKA). Possible factors contributing to this dissatisfaction are decreased posterior condylar offset (PCO) with subseq...

Authors: W. A. M. van Lieshout, K. L. M. Koenraadt, L. H. G. J. Elmans and R. C. I. van Geenen

Non-invasive computer navigation can quantify the pivot shift maneuver with good to excellent reliability in healthy volunteers

The aim of this study was to determine the inter- and intra-observer reliability of knee laxity assessment using a non-invasive navigation system in a population of healthy young athletes. It was hypothesized ...

Authors: Edoardo Monaco, Giorgio Bruni, Sara Lo Torto, Alessandro Carrozzo, Matthew Daggett, Alessandro Annibaldi, Adnan Saithna and Andrea Ferretti

Reduction of in situ force through the meniscus with phased inner resection of medial meniscus: an experimental study in a porcine model

Partial meniscectomy can cause osteoarthritic changes in knees, as inner portion as well as peripheral portion of meniscus is important. The hypothesis of this study was that the amount of the inner resection ...

Authors: Takehito Hirose, Tatsuo Mae, Yuta Tachibana, Tomoki Ohori, Hiromichi Fujie, Hideki Yoshikawa and Ken Nakata

Fast Bowler’s knee – anteromedial articular impingement

To describe a series of impingement lesions found on the anterior aspect of the medial femoral condyle in international cricketers.

Authors: Michael J. Reid, Avinash Alva, Simon M. Thompson, Ranju T. Dhawan, Mary H. Jones and Andy M. Williams

Tendon regeneration and muscle hypotrophy after isolated Gracilis tendon harvesting - a pilot study

The gracilis tendon (GT) is a commonly used autologous graft in Orthopaedic surgery. The majority of information on knee function and outcomes after hamstring harvest is related to both semitendinosus and GT h...

Authors: Anne Flies, Timm Denecke, Natascha Kraus, Philipp Kruppa, Matthew T. Provencher, Roland Becker and Sebastian Kopf

Sagittal instability with inversion is important to evaluate after syndesmosis injury and repair: a cadaveric robotic study

Disruption of the syndesmosis, the anterior-inferior tibiofibular ligament (AITFL), the posterior-inferior tibiofibular ligament (PITFL), and the interosseous membrane (IOM), leads to residual symptoms after a...

Authors: Neel K. Patel, Conor I. Murphy, Thomas R. Pfeiffer, Jan-Hendrik Naendrup, Jason P. Zlotnicki, Richard E. Debski, MaCalus V. Hogan and Volker Musahl

The improved cortical button shows better breaking strength of sutures compared with 10 original cortical button after cyclic loading

Suspensory cortical buttons are widely used for fixation of reconstructed ligaments during anterior cruciate ligament (ACL) reconstruction because they have high usability and a favorable fixing force. However...

Authors: Toshiaki Takahashi and Manabu Takahashi

Achilles tendon reconstruction with peroneus tendon transfer following epithelioid sarcoma resection: a rare case report at 5 years follow-up

Soft-tissue sarcomas (STS) are rare in hand and foot. In this paper we present a case of reconstruction of Achilles tendon defect with peroneus brevis transfer reinforced with medial gastrocnemius fascia and p...

Authors: Federica Mariotti, Silvio Caravelli, Massimiliano Mosca, Simone Massimi, Roberto Casadei and Stefano Zaffagnini

Best implant choice for coracoid graft fixation during the Latarjet procedure depends on patients’ morphometric considerations

To assess the anthropometric dimensions of the coracoid process and the glenoid articular surface and to determine possible implications with the different commercially available Latarjet fixation techniques.

Authors: Achilleas Boutsiadis, Ioannis Bampis, John Swan and Johannes Barth

Open-wedge high tibial osteotomy for spontaneous osteonecrosis of the medial tibial plateau shows excellent clinical outcomes

PurposeThere have been few reports on medial tibial plateau osteonecrosis, and treatment options remain controversial. This study aimed to evaluate the clinical outcomes of open-wedge high tibial osteotomy (OW...

Authors: Kenichi Goshima, Takeshi Sawaguchi, Kenji Shigemoto, Shintaro Iwai, Kenji Fujita and Yuki Yamamuro

All inside full thickness quadriceps tendon ACL reconstruction: Long term follow up results

The aim of this study is to evaluate results of anterior cruciate ligament reconstruction (ACL) using an All-Inside Full Thickness Quadriceps Reconstruction technique at 5 years follow up.

Authors: Hernan Galan, Mateo Escalante, Franco Della Vedova and Daniel Slullitel

No differences in knee kinematics between active and passive flexion-extension movement: an intra-operative kinematic analysis performed during total knee arthroplasty

The objective of the present study was to acquire and compare by the use of a navigation system the intra-operative flexion-extension movement of the knee performed actively by the patient and passively by the...

Authors: Alberto Grassi, Nicola Pizza, Nicola Francesco Lopomo, Maurilio Marcacci, Michele Capozzi, Giulio Maria Marcheggiani Muccioli, Francesca Colle and Stefano Zaffagnini

Anteromedial positioning of the femoral tunnel in anterior cruciate ligament reconstruction is the best option to avoid revision: a single surgeon registry

The aim of the study is to compare the risk of revision of single-bundle hamstring anterior cruciate ligament (ACL) reconstruction between the anteromedial, transtibial and outside-in techniques.

Authors: Ricardo de Paula Leite Cury, Artur Mistieri Simabukuro, Victor de Marques Oliveira, Diego Escudeiro, Pedro Baches Jorge, Fabrício Roberto Severino and Luiz Gabriel Betoni Guglielmetti

Enhancement of chondrogenic differentiation supplemented by a novel small compound for chondrocyte-based tissue engineering

Chondrocyte -based tissue engineering has been a promising option for the treatment of cartilage lesions. In previous literature, TD198946 has been shown to promote chondrogenic differentiation which could pro...

Authors: Shuichi Hamamoto, Ryota Chijimatsu, Kazunori Shimomura, Masato Kobayashi, George Jacob, Fumiko Yano, Taku Saito, Ung-il Chung, Sakae Tanaka and Norimasa Nakamura

Femoral derotational osteotomy level does not effect resulting torsion

The purpose of this study was to assess the effect on femoral torsion by rotational osteotomies at three different levels as measured in 3D using both the mechanical and the anatomic axes.

Authors: Eric W. Edmonds, Corey B. Fuller, Megan E. Jeffords, Christine L. Farnsworth, Amelia M. Lindgren, Andrew T. Pennock and Vidyadhar V. Upasani

The portal of Neviaser: a valid option for antegrade nailing of humerus fractures

The objective of this retrospective non-randomized study was to evaluate the portal of Neviaser (PN) as an alternative approach in antegrade humeral nailing.

Authors: Torsten Gerich, Caroline Mouton, Lea Jabbarian, Jean-Paul Weydert, Alexander Hoffmann, Dietrich Pape and Romain Seil

Accuracy of 3D-planned patient specific instrumentation in high tibial open wedge valgisation osteotomy

High tibial osteotomy (HTO) is an effective treatment option in early osteoarthritis. However, preoperative planning and surgical execution can be challenging. Computer assisted three-dimensional (3D) planning...

Authors: Sandro F. Fucentese, Patrick Meier, Lukas Jud, Gian-Luca Köchli, Alexander Aichmair, Lazaros Vlachopoulos and Philipp Fürnstahl

Technical note: sensitivity analysis of the SCoRE and SARA methods for determining rotational axes during tibiofemoral movements using optical motion capture

The first aim was to report the sensitivity of calculated tibiofemoral movements for the choice of placement of the set of femoral markers. The second aim was to report the influence of accuracy of the motion ...

Authors: Michèle N. J. Keizer and Egbert Otten

A simple rehabilitation regime improves functional outcome in patients with patellafemoral pain after 12 month

The purpose of the present study was to investigate the effects of a 3-month multimodal intervention including patient education, a simple hip exercise program, footwear adjustment, and foot orthoses to reduce...

Authors: Torsten Grønbech Nielsen, Lene Lindberg Miller, Bjarne Mygind-Klavsen and Martin Lind

There is poor accuracy in documenting the location of labral and chondral lesions observed during hip arthroscopy

To determine and compare the accuracy and interobserver reliability of the different methods for localizing acetabular labral, acetabular chondral, and femoral head chondral lesions with hip arthroscopy .

Authors: Sanaz Hariri, Kyle R. Sochacki, Alex S. Harris and Marc R. Safran

Characteristic features of the insertions of the distal tibiofibular ligaments on three-dimensional computed tomography- cadaveric study -

The purpose of this study was to clarify the insertion sites of the anterior inferior tibiofibular ligament (AITFL) and posterior inferior tibiofibular ligament (PITFL) and related osseous landmarks on three-d...

Authors: Sho Kikuchi, Goro Tajima, Atsushi Sugawara, Jun Yan, Moritaka Maruyama, Shinya Oikawa, Takaaki Saigo, Ryunosuke Oikawa and Minoru Doita

Non-locked and locked small fragment straight plates have a similar behavior in buttressing the posteromedial shear tibial plateau fragment: a biomechanical analysis of three different fixations

The aim of this study is to compare the biomechanical behavior of three different fixation constructions currently used for buttressing the posteromedial shearing tibial plateau fragment. Our hypothesis is tha...

Authors: Vincenzo Giordano, Mauricio Kfuri, William Belangero, Allison Venturini, Ana Carolina Silva, Eduardo Merjan Soares, Robinson Esteves Pires and Hilton A. Koch

High validity of measuring the width and volume of medial meniscal extrusion three-dimensionally using an MRI-derived tibial model

Medial meniscal extrusion (MME) is an important marker of knee osteoarthritis (KOA) progression. The purposes of this study were: 1) to determine whether there are morphological differences between CT- and MRI...

Authors: Goro Watanabe, Kenji Hoshi, Yasuo Kurose and Kazuyoshi Gamada

Diagnosis and treatment of rotatory knee instability

Rotatory knee instability is an abnormal, complex three-dimensional motion that can involve pathology of the anteromedial, anterolateral, posteromedial, and posterolateral ligaments, bony alignment, and menisc...

Authors: Jonathan D. Hughes, Thomas Rauer, Christopher M. Gibbs and Volker Musahl

Translational applications of photopolymerizable hydrogels for cartilage repair

Articular cartilage lesions generated by trauma or osteoarthritis are the most common causes of pain and disability in patients.

Authors: Weikun Meng, Liang Gao, Jagadeesh K. Venkatesan, Guanglin Wang, Henning Madry and Magali Cucchiarini

Periosteal incarceration versus interposition adipose tissue grafting in physeal fractures: pilot study in immature rabbits

The purpose of this study is to evaluate bar formation following physeal fracture with incarcerated periosteum or adipose tissue graft using radiographic and histological methods in an immature rabbit model.

Authors: Eric W. Edmonds, Joshua D. Doan and Christine L. Farnsworth

A novel method for internal fixation of basal fifth metatarsal fracture in athletes: a cadaveric study of the F.E.R.I. technique (Fifth metatarsal, Extra-portal, Rigid, Innovative)

One of the main problems of Kirschner wire fixation of fifth metatarsal base fractures (in combination with a tension band wiring technique) seems to be hardware intolerance and several studies in athletes als...

Authors: Pieter D’Hooghe, Silvio Caravelli, Simone Massimi, James Calder, Peter Dzendrowskyj and Stefano Zaffagnini

Augmented reality-based navigation system applied to tibial bone resection in total knee arthroplasty

This pilot study was performed to examine the accuracy of the AR-KNEE system, an imageless navigation system using augmented reality (AR) technology for total knee arthroplasty. The AR-KNEE system enables the ...

Authors: Sachiyuki Tsukada, Hiroyuki Ogawa, Masahiro Nishino, Kenji Kurosaka and Naoyuki Hirasawa

Mechanical strength of a new plate compared to six previously tested opening wedge high tibial osteotomy implants

This study aimed to assess the mechanical static and fatigue strength provided by the FlexitSystem plate in medial opening wedge high tibial osteotomies (MOWHTO), and to compare it to six previously tested imp...

Authors: Arnaud Diffo Kaze, Stefan Maas, James Belsey, Alexander Hoffmann, Romain Seil, Ronald van Heerwaarden and Dietrich Pape

Biomechanical correlation at the knee joint between static lunge and single-leg drop landing - a comparative study among three different toe directions

Toe direction is a critical factor affecting knee biomechanics during various movements including closed kinetic chain (CKC) exercise and landing tasks. Physiotherapists always concentrate on the control of to...

Authors: Kengo Harato, Aiko Sakurai, Yutaro Morishige, Shu Kobayashi, Yasuo Niki and Takeo Nagura

Effects of denosumab on bone mineral density and bone turnover markers in rheumatoid arthritis patients switching from bisphosphonates

To compare the efficacy of 12-month denosumab treatment on bone mineral density (BMD) and bone turnover markers (BTMs) between treatment-naïve osteoporosis patients with rheumatoid arthritis (RA) and those wit...

Authors: Tetsuya Kaneko, Koichi Okamura, Yukio Yonemoto, Chisa Okura, Takahito Suto, Masahiro Tachibana, Hideo Sakane, Makoto Inoue and Hirotaka Chikuda

The influence of tantalum on human cell lineages important for healing in soft-tissue reattachment surgery: an in-vitro analysis

Porous tantalum is currently used in orthopaedic surgery for a variety of indications including soft tissue re-attachment. However, the clinical results have been variable and a previous laboratory study has s...

Authors: Edward C. A. Gee, Renato Eleotério, Laura M. Bowker, Adnan Saithna and John A. Hunt