Articles

Autofluorescence imaging for improved visualization of joint structures during arthroscopic surgery

The purpose of our study is to develop the arthroscopic autofluorescence imaging (AFI) system to improve the visualization during arthroscopic surgery by real-time enhancing the contrast between joint structur...

Authors: Duy Tan Nguyen, Pepijn van Horssen, Hans Derriks, Martijn van de Giessen and Ton van Leeuwen

Current trends in tendinopathy: consensus of the ESSKA basic science committee. Part I: biology, biomechanics, anatomy and an exercise-based approach

Chronic tendinopathies represent a major problem in the clinical practice of sports orthopaedic surgeons, sports doctors and other health professionals involved in the treatment of athletes and patients that p...

Authors: F. Abat, H. Alfredson, M. Cucchiarini, H. Madry, A. Marmotti, C. Mouton, J.M. Oliveira, H. Pereira, G. M. Peretti, D. Romero-Rodriguez, C. Spang, J. Stephen, C. J. A. van Bergen and L. de Girolamo

Does anatomic single-bundle ACL reconstruction using hamstring autograft produce anterolateral meniscal root tearing?

To determine if tibial tunnel reaming during anatomic single-bundle anterior cruciate ligament (ACL) reconstruction using hamstring autograft can result in anterolateral meniscal root injury, as diagnosed by m...

Authors: Sebastián Irarrázaval, Angel Masferrer-Pino, Maximiliano Ibañez, Tamer M. A. Shehata, María Naharro and Joan C. Monllau

The effect of repetitive flexion and extension fatigue loading on the young porcine lumbar spine, a feasibility study of MRI and histological analyses

The biomechanical mechanisms of failure of FSUs have been studied but the correlation of repetitive flexion and extension loadings to the initial phase of fatigue in young FSUs are still not known. The purpose...

Authors: Olof Thoreson, Lars Ekström, Hans-Arne Hansson, Carl Todd, Wisam Witwit, Anna Swärd Aminoff, Pall Jonasson and Adad Baranto

The rate of publication of free papers at the 2008 and 2010 European Society of Sports Traumatology Knee Surgery and Arthroscopy congresses

The purpose of this study was to evaluate the frequency with which free papers presented at the 2008 and 2010 European Society of Sports Traumatology Knee Surgery and Arthroscopy (ESSKA) congress were ultimate...

Authors: Jeffrey Kay, Muzammil Memon, Joelle Rogozinsky, Darren de SA, Nicole Simunovic, Romain Seil, Jon Karlsson and Olufemi Rolland Ayeni

Hyaluronan thiomer gel/matrix mediated healing of articular cartilage defects in New Zealand White rabbits—a pilot study

Articular cartilage defects are limited to their regenerative potential in human adults. Our current study evaluates tissue regeneration in a surgically induced empty defect site with hyaluronan thiomer as a p...

Authors: Christoph Bauer, Vivek Jeyakumar, Eugenia Niculescu-Morzsa, Daniela Kern and Stefan Nehrer

Three-dimensional geometric morphometric analysis reveals ethnic dimorphism in the shape of the femur

Ethnic dimorphism in the distal femur has never been studied in a three-dimensional analysis focused on shape instead of size. Yet, this dimorphism has direct implications in orthopedic surgery and in anthropo...

Authors: Etienne Cavaignac, Ke Li, Marie Faruch, Frederic Savall, Philippe Chiron, W. Huang and Norbert Telmon

The cytokine expression in synovial membrane and the relationship with pain and pathological findings at hip arthroscopy

Synovial membrane inflammation is the most common finding presenting during hip arthroscopy, and may play a role in hip pain. We sought to determine the relationships between synovial cytokine levels, hip pain...

Authors: Kensuke Fukushima, Gen Inoue, Hisako Fujimaki, Kentaro Uchida, Masayuki Miyagi, Naoshige Nagura, Katsufumi Uchiyama, Naonobu Takahira and Masashi Takaso

A retinaculum-sparing surgical approach preserves porcine stifle joint cartilage in an experimental animal model of cartilage repair

This study compares a traditional parapatellar retinaculum-sacrificing arthrotomy to a retinaculum-sparing arthrotomy in a porcine stifle joint as a cartilage repair model.

Authors: Marcelo B. Bonadio, James M. Friedman, Mackenzie L. Sennett, Robert L. Mauck, George R. Dodge and Henning Madry

The effect of a dynamic PCL brace on patellofemoral compartment pressures in PCL-and PCL/PLC-deficient knees

The natural history of posterior cruciate ligament (PCL) deficiency includes the development of arthrosis in the patellofemoral joint (PFJ). The purpose of this biomechanical study was to evaluate the hypothes...

Authors: Tyler Welch, Thomas Keller, Ruben Maldonado, Melodie Metzger, Karen Mohr and Ronald Kvitne

Biomechanical cadaveric comparison of patellar ligament suture protected by a steel cable versus a synthetic cable

Purpose and hypothesis: Patellar ligament rupture is a rare disabling pathology requiring a surgical ligament suture protected by a frame. The gold standard is the steel cable, but its rigidity and the necessi...

Authors: P. Bouget, C. Breque, J. S. Beranger, J. P. Faure, F. Khiami and T. Vendeuvre

Different culture conditions affect the growth of human tendon stem/progenitor cells (TSPCs) within a mixed tendon cells (TCs) population

Tendon resident cells (TCs) are a mixed population made of terminally differentiated tenocytes and tendon stem/progenitor cells (TSPCs). Since the enrichment of progenitors proportion could enhance the effecti...

Authors: M. Viganò, C. Perucca Orfei, A. Colombini, D. Stanco, P. Randelli, V. Sansone and L. de Girolamo

Differences in biomarkers of cartilage matrix turnover and their changes over 2 years in adolescent and adult volleyball athletes

This study aimed the feasibility to assess longitudinal changes in biomarkers of cartilage turnover and to determine their relationship with patient-rated outcomes over 2 years in volleyball athletes.

Authors: Heide Boeth, Aoife MacMahon, A. Robin Poole, Frank Buttgereit, Patrik Önnerfjord, Pilar Lorenzo, Cecilia Klint, Anna Pramhed and Georg N. Duda

MRI findings of knee abnormalities in adolescent and adult volleyball players

To longitudinally and cross-sectionally evaluate knee abnormalities by sex and age in adolescent and adult volleyball athletes over 2 years using magnetic resonance imaging (MRI).

Authors: Heide Boeth, Aoife MacMahon, Felix Eckstein, Gerd Diederichs, Arne Schlausch, Wolfgang Wirth and Georg N. Duda

The haematoma and its role in bone healing

Fracture treatment is an old endeavour intended to promote bone healing and to also enable early loading and regain of function in the injured limb. However, in today’s clinical routine the healing potential o...

Authors: H. Schell, G. N. Duda, A. Peters, S. Tsitsilonis, K. A. Johnson and K. Schmidt-Bleek

Effects of combined rAAV-mediated TGF-β and sox9 gene transfer and overexpression on the metabolic and chondrogenic activities in human bone marrow aspirates

Transplantation of genetically modified bone marrow concentrates is an attractive approach to conveniently activate the chondrogenic differentiation processes as a means to improve the intrinsic repair capacit...

Authors: Ke Tao, Ana Rey-Rico, Janina Frisch, Jagadeesh Kumar Venkatesan, Gertrud Schmitt, Henning Madry, Jianhao Lin and Magali Cucchiarini

A preclinical numerical assessment of a polyetheretherketone femoral component in total knee arthroplasty during gait

Conventional total knee replacement designs show high success rates but in the long term, the stiff metal components may affect bone quality of the distal femur. In this study we introduce an all-polymer total...

Authors: Lennert de Ruiter, Dennis Janssen, Adam Briscoe and Nico Verdonschot

Biomechanical testing of transcapsular meniscal repair

All of previous biomechanical studies on meniscal repair have examined the meniscus itself without synovial membrane and capsule, although in the clinical setting, the meniscal repair is generally performed in...

Authors: Ryo Iuchi, Tatsuo Mae, Konsei Shino, Tomohiko Matsuo, Hideki Yoshikawa and Ken Nakata

Patient perceptions regarding physician reimbursements, wait times, and out-of-pocket payments for anterior cruciate ligament reconstruction in Ontario

Currently, there is a lack of knowledge regarding patient perceptions surrounding physician reimbursements, appropriate wait times, and out-of-pocket payment options for anterior cruciate ligament reconstructi...

Authors: Muzammil Memon, Lydia Ginsberg, Darren de SA, Andrew Nashed, Nicole Simunovic, Mark Phillips, Matthew Denkers, Rick Ogilvie, Devin Peterson and Olufemi R. Ayeni

Erratum to: Bone marrow aspirate concentrate for the treatment of osteochondral lesions of the talus: a systematic review of outcomes

Authors: Jorge Chahla, Mark E. Cinque, Jason M. Schon, Daniel J. Liechti, Lauren M. Matheny, Robert F. LaPrade and Thomas O. Clanton

Drill wobble – effect on femoral tunnel aperture during anterior cruciate ligament reconstruction

In anterior cruciate ligament reconstruction performed using cortical button fixation on the femur, we have observed a “wobble” effect that can occur when a cannulated femoral drill is used over a guide pin th...

Authors: Naser Alnusif, Adam Hart, Maher Baroudi, Robert Marien, Mark Burman and Paul A. Martineau

Quantitative Computed Tomography (QCT) derived Bone Mineral Density (BMD) in finite element studies: a review of the literature

Finite element modeling of human bone provides a powerful tool to evaluate a wide variety of outcomes in a highly repeatable and parametric manner. These models are most often derived from computed tomography ...

Authors: Nikolas K. Knowles, Jacob M. Reeves and Louis M. Ferreira

Anatomical study: comparing the human, sheep and pig knee meniscus

Animal models are commonly used in investigating new treatment options for knee joint injuries including injuries to the meniscus. The reliability and applicability of these models to replicate findings in hum...

Authors: Talal Takroni, Leila Laouar, Adetola Adesida, Janet A. W. Elliott and Nadr M. Jomha

Randomized controlled trial comparing the effectiveness of the ultrasound-guided galvanic electrolysis technique (USGET) versus conventional electro-physiotherapeutic treatment on patellar tendinopathy

Patellar tendinopathy has a high prevalence rate among athletes. Different therapeutic options can be found in the current literature, but none of them has been clearly established as the gold standard. The pu...

Authors: F. Abat, J. L. Sánchez-Sánchez, A. M. Martín-Nogueras, J. I. Calvo-Arenillas, J. Yajeya, R. Méndez-Sánchez, J. C. Monllau and P. E. Gelber

Bone marrow aspirate concentrate for the treatment of osteochondral lesions of the talus: a systematic review of outcomes

The goal of this perform a systematic review on the outcomes of bone marrow aspirate concentrate (BMAC) for the treatment of chondral defects and osteoarthritis (OA) of the talus.

Authors: Jorge Chahla, Mark E. Cinque, Jason M. Schon, Daniel J. Liechti, Lauren M. Matheny, Robert F. LaPrade and Thomas O. Clanton

New insight in the architecture of the quadriceps tendon

Published data regarding the structure of the quadriceps tendon are diverse. Dissection of the quadriceps muscle group revealed that beside the rectus femoris, vastus lateralis, vastus intermedius and vastus m...

Authors: Karl Grob, Mirjana Manestar, Luis Filgueira, Timothy Ackland, Helen Gilbey and Markus S. Kuster

Knee donor-site morbidity after mosaicplasty – a systematic review

Mosaicplasty has been associated with good short- to long-term results. Nevertheless, the osteochondral harvesting is restricted to the donor-site area available and it may lead to significant donor-site morbi...

Authors: Renato Andrade, Sebastiano Vasta, Rogério Pereira, Hélder Pereira, Rocco Papalia, Mustafa Karahan, J. Miguel Oliveira, Rui L. Reis and João Espregueira-Mendes

Inflammatory cytokine levels in synovial fluid 3, 4 days postoperatively and its correlation with early-phase functional recovery after anterior cruciate ligament reconstruction: a cohort study

Synovial fluid was collected prior to and at 3 to 4 days after ACL reconstruction to investigate the correlation between inflammatory cytokine levels in the acute phase after surgery and physical functional re...

Authors: Makiko Inoue, Takeshi Muneta, Miyoko Ojima, Kaori Nakamura, Hideyuki Koga, Ichiro Sekiya, Mutsumi Okazaki and Kunikazu Tsuji

Knee joint kinematics with dynamic augmentation of primary anterior cruciate ligament repair - a biomechanical study

Dynamic augmentation of anterior cruciate ligament tears seems to reduce anteroposterior knee translation close to the pre-injury level. The aim of the present study is to biomechanically investigate the cours...

Authors: Janosch Häberli, Philipp Henle, Yves P. Acklin, Ivan Zderic and Boyko Gueorguiev

The cross-sectional shape of the fourfold semitendinosus tendon is oval, not round

The looped side of the semitendinosus tendon (ST) graft (i.e., the side inserted into the femoral tunnel during anterior cruciate ligament reconstruction) appears to be oval rather than round. The purpose of t...

Authors: Takeshi Oshima, Junsuke Nakase, Hitoaki Numata, Yasushi Takata and Hiroyuki Tsuchiya

Three-dimensional kinematic and kinetic analysis of knee rotational stability in ACL-deficient patients during walking, running and pivoting

Anterior cruciate ligament (ACL) deficiency leads to altered stability of the knee. The purpose of this study was to compare the dynamic, rotational stability of the knee, expressed as rotational stiffness, be...

Authors: Marie Bagger Bohn, Annemette Krintel Petersen, Dennis Brandborg Nielsen, Henrik Sørensen and Martin Lind

Erratum to: Imaging the implant-soft tissue interactions in total knee arthroplasty

Authors: Michel P. Bonnin, Tom Van Hoof, Arnoud De Kok, Matthias Verstraete, Catherine Van der Straeten, Mo Saffarini and Jan Victor

Sustained delivery of recombinant human bone morphogenetic protein-2 from perlecan domain I - functionalized electrospun poly (ε-caprolactone) scaffolds for bone regeneration

Biomaterial scaffolds that deliver growth factors such as recombinant human bone morphogenetic proteins-2 (rhBMP-2) have improved clinical bone tissue engineering by enhancing bone tissue regeneration. This ap...

Authors: Yu-Chieh Chiu, Eliza L. Fong, Brian J. Grindel, Fred K. Kasper, Daniel A. Harrington and Mary C. Farach-Carson

Imaging the implant-soft tissue interactions in total knee arthroplasty

In Total Knee Arthroplasty (TKA), residual pain may be secondary to soft tissue impingements, which are difficult to visualize around chromium-cobalt implants using medical imaging, so their interactions remai...

Authors: Michel P. Bonnin, Tom Van Hoof, Arnoud De Kok, Matthias Verstraete, Catherine Van der Straeten, Mo Saffarini and Jan Victor

Augmented repair of radial meniscus tear with biomimetic electrospun scaffold: an in vitro mechanical analysis

Large radial tears that disrupt the circumferential fibers of the meniscus are associated with reduced meniscal function and increased risk of joint degeneration. Electrospun fibrous scaffolds can mimic the to...

Authors: Benjamin B. Rothrauff, Piya-on Numpaisal, Brian B. Lauro, Peter G. Alexander, Richard E. Debski, Volker Musahl and Rocky S. Tuan

Basic science of osteoarthritis

Osteoarthritis (OA) is a prevalent, disabling disorder of the joints that affects a large population worldwide and for which there is no definitive cure. This review provides critical insights into the basic k...

Authors: Magali Cucchiarini, Laura de Girolamo, Giuseppe Filardo, J. Miguel Oliveira, Patrick Orth, Dietrich Pape and Pascal Reboul

Five-year publication rate of clinical presentations at the open and closed American shoulder and elbow surgeons annual meeting from 2005–2010

The purpose of this study was to evaluate the five-year publication rate of papers presented at both the open and closed American Shoulder and Elbow Surgeons’ (ASES) annual meetings from 2005 to 2010.

Authors: J. Kay, M. Memon, D. de SA, A. Duong, N. Simunovic, G. S. Athwal and O. R. Ayeni

Biomechanical and histological comparison between the cryopreserved and the lyophilized Gracilis tendon allograft for MPFL reconstruction, a cadaveric experimental study

Medial patellofemoral ligament (MPFL) is the main restrictor of lateral shifting of the patella, contributing by 60 % in the first 20° flexion of the knee. MPFL reconstruction has been performed in order to re...

Authors: Roberto Negrín, Jaime Duboy, Fernando Olavarría, Mauricio Wainer, Horacio Jimenez, Facundo Las Heras, Nicolas Reyes and Hugo Godoy

Biomechanical evaluation of shape-memory alloy staples for internal fixation—an in vitro study

The field of orthopaedics is a constantly evolving discipline. Despite the historical success of plates, pins and screws in fracture reduction and stabilisation, there is a continuing search for more efficient...

Authors: QiCai Jason Hoon, Matthew H. Pelletier, Chris Christou, Kenneth A. Johnson and William R. Walsh

Intra-articular interleukin-1 receptor antagonist (IL1-ra) microspheres for posttraumatic osteoarthritis: in vitro biological activity and in vivo disease modifying effect

Interleukin-1 receptor antagonist (IL-1 ra) can be disease-modifying in posttraumatic osteoarthritis (PTOA). One limitation is its short joint residence time. We hypothesized that IL-1 ra encapsulation in poly...

Authors: Khaled A. Elsaid, Anand Ubhe, Ziyad Shaman and Gerard D’Souza

Functional outcome measures in a surgical model of hip osteoarthritis in dogs

The hip is one of the most common sites of osteoarthritis in the body, second only to the knee in prevalence. However, current animal models of hip osteoarthritis have not been assessed using many of the funct...

Authors: Dianne Little, Stephen Johnson, Jonathan Hash, Steven A. Olson, Bradley T. Estes, Franklin T. Moutos, B. Duncan X. Lascelles and Farshid Guilak

Effects of rAAV-mediated FGF-2 gene transfer and overexpression upon the chondrogenic differentiation processes in human bone marrow aspirates

Application of genetically modified bone marrow concentrates in articular cartilage lesions is a promising approach to enhance cartilage repair by stimulating the chondrogenic differentiation processes in site...

Authors: Janina Frisch, Jagadeesh K. Venkatesan, Ana Rey-Rico, Adam M. Zawada, Gertrud Schmitt, Henning Madry and Magali Cucchiarini

Muscle injuries and strategies for improving their repair

Satellite cells are tissue resident muscle stem cells required for postnatal skeletal muscle growth and repair through replacement of damaged myofibers. Muscle regeneration is coordinated through different mec...

Authors: Thomas Laumonier and Jacques Menetrey

On the heterogeneity of the femoral enthesis of the human ACL: microscopic anatomy and clinical implications

Most ruptures of the native anterior cruciate ligament (ACL) and ACL graft occur at, or near, the femoral enthesis, with the posterolateral fibers of the native ligament being especially vulnerable during pivo...

Authors: Mélanie L. Beaulieu, Grace E. Carey, Stephen H. Schlecht, Edward M. Wojtys and James A. Ashton-Miller

The effect of foot landing position on biomechanical risk factors associated with anterior cruciate ligament injury

Identification of biomechanical risk factors associated with anterior cruciate ligament (ACL) injury can facilitate injury prevention. The purpose of this study is to investigate the effects of three foot land...

Authors: Andrew A. Tran, Corey Gatewood, Alex H. S. Harris, Julie A. Thompson and Jason L. Dragoo

Additional mesenchymal stem cell injection improves the outcomes of marrow stimulation combined with supramalleolar osteotomy in varus ankle osteoarthritis: short-term clinical results with second-look arthroscopic evaluation

Supramalleolar osteotomy (SMO) is reported to be an effective treatment for varus ankle osteoarthritis by redistributing the load line within the ankle joint. Mesenchymal stem cells (MSCs) have been proposed a...

Authors: Yong Sang Kim, Moses Lee and Yong Gon Koh

Does simulated walking cause gapping of meniscal repairs?

The objective of rehabilitation following meniscal repair is to promote healing by limiting stresses on repairs, while simultaneously preserving muscle strength and joint motion. Both protective protocols limi...

Authors: Patrick C. McCulloch, Hugh L. Jones, Kendall Hamilton, Michael G. Hogen, Jonathan E. Gold and Philip C. Noble

Qualitative and quantitative measurement of the anterior and posterior meniscal root attachments of the New Zealand white rabbit

The purpose of this study was to quantify the meniscal root anatomy of the New Zealand white rabbit to better understand this animal model for future in vitro and in vivo joint degeneration studies.

Authors: David Civitarese, Tammy L. Haut Donahue, Christopher M. LaPrade, Adriana J. Saroki, Samuel G. Moulton, Jason M. Schon and Robert F. LaPrade

White blood cell concentration correlates with increased concentrations of IL-1ra and improvement in WOMAC pain scores in an open-label safety study of autologous protein solution

There has been debate on which blood components should be included in autologous therapies. Autologous Protein Solution (APS) is a unique blood-derived therapy composed of concentrated white blood cells, plate...

Authors: William King, Walter van der Weegen, Rogier Van Drumpt, Hans Soons, Krista Toler and Jennifer Woodell-May

Differences in levels of inflammatory mediators in meniscal and synovial tissue of patients with meniscal lesions

Meniscal injuries are a risk factor for osteoarthritis (OA). While a mechanical pathway between meniscal injury and OA has been described, the biological effects of inflammation on this pathway have yet to be ...

Authors: Takahiro Ogura, Miyako Suzuki, Yoshihiro Sakuma, Kazuyo Yamauchi, Sumihisa Orita, Masayuki Miyagi, Tetsuhiro Ishikawa, Hiroto Kamoda, Yasuhiro Oikawa, Izumi Kanisawa, Kenji Takahashi, Hiroki Sakai, Tomonori Nagamine, Hideaki Fukuda, Kazuhisa Takahashi, Seiji Ohtori…