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Journal of Experimental Orthopaedics

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https://www.readbyqxmd.com/read/30109436/what-role-does-metal-allergy-sensitization-play-in-total-knee-arthroplasty-revision
#1
David R Lionberger, Justin Samorajski, Charlie D Wilson, Andreana Rivera
BACKGROUND: Clinicians are often faced with the decision whether to revise a painful total knee replacement in patients who have chronic vague pain with no apparent explanation. A sensitive metal testing assay called the lymphocyte stimulation test has been used to detect nickel sensitization in patients with orthopedic implants. We hypothesize that nickel sensitization plays a role in the pathology of failed joint arthroplasty in patients with unexplained dissatisfaction. METHODS: 32 patients with symptomatic total knee arthroplasty without obvious mechanical findings were tested prior to revision surgery...
August 14, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/30094573/a-novel-test-for-assessment-of-anterolateral-rotatory-instability-of-the-knee-the-tibial-internal-rotation-test-tir-test
#2
Malou E Slichter, Nienke Wolterbeek, K Gie Auw Yang, Jacco A C Zijl, Tom M Piscaer
BACKGROUND: Rotational instability of the knee may persist after anterior cruciate ligament (ACL) reconstruction, which may be due to insufficiency of anterolateral stabilizing structures. However, no reliable diagnostic tool or physical examination test is available for identifying patients with anterolateral rotatory instability (ALRI). As shown in cadaveric studies, static internal rotation of the knee is increased in higher flexion angles of the knee after severing the anterolateral structures...
August 9, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/30091026/numerical-comparative-study-of-five-currently-used-implants-for-high-tibial-osteotomy-realistic-loading-including-muscle-forces-versus-simplified-experimental-loading
#3
Arnaud Diffo Kaze, Stefan Maas, Slawomir Kedziora, James Belsey, Alexander Haupert, Claude Wolf, Alexander Hoffmann, Dietrich Pape
BACKGROUND: Many different fixation devices are used to maintain the correction angle after medial open wedge high tibial osteotomy (MOWHTO). Each device must provide at least sufficient mechanical stability to avoid loss of correction and unwanted fracture of the contralateral cortex until the bone heals. In the present study, the mechanical stability of following different implants was compared: the TomoFix small stature (sm), the TomoFix standard (std), the Contour Lock, the iBalance and the second generation PEEKPower...
August 8, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/30022381/the-spread-of-injectate-after-ultrasound-guided-lateral-elbow-injection-a-cadaveric-study
#4
Jonathan P Evans, Jeremy Metz, Rahul Anaspure, William J Thomas, Andrew King, Vicki A Goodwin, Chris D Smith
BACKGROUND: Injections into the tendinous portion of the common extensor origin are a common intervention in the treatment of Lateral Elbow Tendinopathy (LET). Clinical trials report a heterogeneous selection of injectate volumes and delivery techniques, with systematic reviews finding no clear consensus. The aim of this study was to assess the intratendinous distribution and surrounding tissue contamination of ultrasound-guided injections into the Common Extensor Tendon (CET) of the elbow...
July 18, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/30006750/platelet-rich-plasma-does-not-reduce-skeletal-muscle-fibrosis-after-distraction-osteogenesis
#5
Ichiro Tonogai, Fumio Hayashi, Toshiyuki Iwame, Tomoya Takasago, Tetsuya Matsuura, Koichi Sairyo
BACKGROUND: Skeletal muscle fibrosis caused by an increase in collagen deposition often occurs after distraction osteogenesis. Although studies are available reporting the effects of platelet-rich plasma (PRP) on tissue healing following injury, current findings remain controversial. This study focused on determining whether PRP reduces skeletal muscle fibrosis caused by distraction osteogenesis. METHODS: Tibial osteotomies were performed on 8-week-old wild type mice, and tibiae were distracted at a rate of 0...
July 13, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29956015/impact-of-five-different-medial-patellofemoral-ligament-reconstruction-strategies-and-three-different-graft-pre-tensioning-states-on-the-mean-patellofemoral-contact-pressure-a-biomechanical-study-on-human-cadaver-knees
#6
Daniel Dornacher, Sabine Lippacher, Manfred Nelitz, Heiko Reichel, Anita Ignatius, Lutz Dürselen, Andreas Martin Seitz
BACKGROUND: The medial patellofemoral ligament (MPFL) is the main stabiliser of the patella and thus mostly reconstructed in the surgical treatment of patellofemoral dislocation. The aims of this study were to gain a better understanding of the influence of altered MPFL graft-fixation locations and different graft pre-tensions on patellofemoral contact pressure. METHODS: Six human cadaveric knee joints were placed in a six-degree-of-freedom knee simulator. Mean PFCP (mPFCP) was evaluated in knee flexion of 0, 30 and 90° using a calibrated pressure-measurement system...
June 28, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29931565/nonoperative-treatment-of-muscle-injuries-recommendations-from-the-gots-expert-meeting
#7
REVIEW
T Hotfiel, R Seil, W Bily, W Bloch, A Gokeler, R M Krifter, F Mayer, P Ueblacker, L Weisskopf, M Engelhardt
BACKGROUND: Muscle injuries are some of the most common injuries in sports; they have a high recurrence rate and can result in the loss of ability to participate in training or competition. In clinical practice, a wide variety of treatment strategies are commonly applied. However, a limited amount of evidence-based data exists, and most therapeutic approaches are solely based on "best practice". Thus, there is a need for consensus to provide strategies and recommendations for the treatment of muscle injuries...
June 22, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29923073/perioperative-platelet-rich-plasma-prp-in-total-hip-arthroplasty-through-the-hardinge-approach-protocol-to-study-the-effectiveness-for-gluteus-medius-healing
#8
Anni Aavikko, J Puhakka, J Haapala, J Kukkonen, K Mäkelä, J Kosola
BACKGROUND: Platelet-rich plasma (PRP) has been used to support tendon regeneration mainly in sports medicine. PRP is a concentrate of platelet-rich plasma proteins derived from whole blood by centrifugation to remove erythrocytes and leukocytes. PRP has high amounts of platelets which may promote healing tendons affected by degenerative conditions. These platelets contain growth factors and are known to facilitate the regeneration of injured tendon structures. Total hip arthroplasty (THA) through the Hardinge approach may leave the patient with impaired gait and poor regeneration of the gluteus medius tendon if the tendon is not reattached properly after closure of the surgical wound...
June 19, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29916182/a-novel-approach-to-enhance-acl-injury-prevention-programs
#9
EDITORIAL
Alli Gokeler, Romain Seil, Gino Kerkhoffs, Evert Verhagen
Efficacy studies have demonstrated decreased anterior cruciate ligament (ACL) injury rates for athletes participating in injury prevention programs. Typically, ACL injury prevention programs entail a combination of plyometrics, strength training, agility and balance exercises. Unfortunately, improvements of movement patterns are not sustained over time. The reason may be related to the type of instructions given during training. Encouraging athletes to consciously control knee movements during exercises may not be optimal for the acquisition of complex motor skills as needed in complex sports environments...
June 18, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29904905/mmp-3-in-the-peripheral-serum-as-a-biomarker-of-knee-osteoarthritis-40-years-after-open-total-knee-meniscectomy
#10
Ioannis Pengas, Suzanne Eldridge, Aggelos Assiotis, Michael McNicholas, Joao Espregueira Mendes, Lior Laver
BACKGROUND: To explore potential biomarkers in a meniscectomy-induced knee osteoarthritis model, at forty years after meniscectomy. METHODS: We carried out a forty-year study of 53 patients who, as adolescents, underwent open total meniscectomy and assessed two potential synovial and serum biomarkers, namely glycosaminoglycan (GAG) and matrix metalloproteinase-3 (MMP-3). Of the 30 patients available for review, 8 had contralateral knee operations and were excluded...
June 15, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29904897/anterior-cruciate-ligament-repair-past-present-and-future
#11
REVIEW
Piyush Mahapatra, Saman Horriat, Bobby S Anand
BACKGROUND: This article provides a detailed narrative review on the history and current concepts surrounding ligamentous repair techniques in athletic patients. In particular, we will focus on the anterior cruciate ligament (ACL) as a case study in ligament injury and ligamentous repair techniques. PubMed (MEDLINE), EMBASE and Cochrane Library databases for papers relating to primary anterior cruciate ligament reconstruction were searched by all participating authors. All relevant historical papers were included for analysis...
June 15, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29904825/the-effect-of-residency-training-on-arthroscopic-knot-tying-and-knot-stability-which-knot-is-best-tied-by-orthopaedic-surgery-residents
#12
Kevin J Cronin, Jacob L Cox, Timothy M Hoggard, Scott T Marberry, Brandon G Santoni, Charles C Nofsinger
BACKGROUND: The aim of this study is to evaluate which of three arthroscopic knots are most reliably taught to and executed by residents at varying levels of training. METHODS: Three arthroscopic knots, the Samsung Medical Center (SMC), the Weston, and the surgeon's knot, were taught to 16 orthopaedic surgery residents. Each knot was tied in triplicate at two sessions 1 week apart. The knots were then biomechanically tested for strength. Corresponding knots tied by a sports medicine fellow served as the respective controls...
June 15, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29900519/rater-agreement-reliability-of-the-dial-test-in-the-acl-deficient-knee
#13
Malou E Slichter, Nienke Wolterbeek, K Gie Auw Yang, Jacco A C Zijl, Tom M Piscaer
BACKGROUND: Posterolateral rotatory instability (PLRI) of the knee can easily be missed, because attention is paid to injury of the cruciate ligaments. If left untreated this clinical instability may persist after reconstruction of the cruciate ligaments and may put the graft at risk of failure. Even though the dial test is widely used to diagnose PLRI, no validity and reliability studies of the manual dial test are yet performed in patients. This study focuses on the reliability of the manual dial test by determining the rater agreement...
June 14, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29900517/mesenchymal-stem-cells-in-osteotomy-repair-after-tibial-tuberosity-advancement-in-dogs-with-cranial-cruciate-ligament-injury
#14
Clarissa Rocha Dos Santos, Richard da Rocha Filgueiras, Patrícia Furtado Malard, Andre Rodrigues da Cunha Barreto-Vianna, Kaique Nogueira, Carolina da Silva Leite, Eduardo Maurício Mendes de Lima
BACKGROUND: The cranial cruciate ligament rupture (CCLR) is the most commonly encountered orthopedic condition in dogs. Among the various techniques to treat this condition, tibial tuberosity advancement (TTA) has been used to obtain rapid recovery of the affected knee. The objective of this study was to evaluate the viability of the use of mesenchymal stem cells (MSC) implanted in the osteotomy site obtained by TTA in nine dogs diagnosed with CCLR. METHODS: The MSC were isolated from the adipose tissue of the dogs and cultured for eight days, the animals were divided into two groups...
June 14, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29881999/level-of-evidence-in-wrist-ligament-repair-and-reconstruction-research-a-systematic-review
#15
REVIEW
Jonny K Andersson, Bo Rööser, Jón Karlsson
There have been numerous studies on surgery of wrist ligament injuries, but a quick assessment reveals few with a high level of evidence (LoE). The primary aim of this study was to categorize the study type and LoE of studies on repair and reconstruction of the scapholunate ligament, the lunotriquetral ligament and the triangular fibrocartilage complex by applying the LoE rating system proposed by the Oxford Centre for Evidence-Based Medicine. The secondary aims were to evaluate the journal- and geographic- distribution of the included studies...
June 7, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29881921/anatomic-analysis-of-the-whole-articular-capsule-of-the-shoulder-joint-with-reference-to-the-capsular-attachment-and-thickness
#16
Daisuke Momma, Akimoto Nimura, Satoru Muro, Hitomi Fujishiro, Takashi Miyamoto, Tadanao Funakoshi, Tomoyuki Mochizuki, Norimasa Iwasaki, Keiichi Akita
BACKGROUND: Although conventional Bankart repair has been the accepted procedure for traumatic anterior glenohumeral instability, the humeral avulsion of the glenohumeral ligament or an elongation of the capsule remains challenging to decide the appropriate treatment. The anatomical knowledge regarding the whole capsule of glenohumeral joint is necessary to accurately treat for the capsular disorders. The aims of the current study were to investigate the anatomical features of capsular attachment and thickness in a whole capsule of glenohumeral joint...
June 7, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29790042/orthopaedic-regenerative-tissue-engineering-en-route-to-the-holy-grail-disequilibrium-between-the-demand-and-the-supply-in-the-operating-room
#17
REVIEW
Ibrahim Fatih Cengiz, Hélder Pereira, Laura de Girolamo, Magali Cucchiarini, João Espregueira-Mendes, Rui L Reis, Joaquim Miguel Oliveira
Orthopaedic disorders are very frequent, globally found and often partially unresolved despite the substantial advances in science and medicine. Their surgical intervention is multifarious and the most favourable treatment is chosen by the orthopaedic surgeon on a case-by-case basis depending on a number of factors related with the patient and the lesion. Numerous regenerative tissue engineering strategies have been developed and studied extensively in laboratory through in vitro experiments and preclinical in vivo trials with various established animal models, while a small proportion of them reached the operating room...
May 22, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29721781/implicit-video-feedback-produces-positive-changes-in-landing-mechanics
#18
Tijana Popovic, Shane V Caswell, Anne Benjaminse, Tarique Siragy, Jatin Ambegaonkar, Nelson Cortes
BACKGROUND: Implicit (IF) and explicit (EF) feedback are two motor learning strategies demonstrated to alter movement patterns. There is conflicting evidence on which strategy produces better outcomes. The purpose of this study was to examine the effects of reduced IF and EF video feedback on lower extremity landing mechanics. METHODS: Thirty participants (24 ± 2 years, 1.7 ± 0.1 m, 70 ± 11 kg) were randomly assigned to three groups: IF (n = 10), EF (n = 10), and control (CG) (n = 10)...
May 2, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29721763/optimization-of-a-closed-rat-tibial-fracture-model
#19
Kareem Obayes Handool, Sahar Mohammed Ibrahim, Ubedullah Kaka, Muhammad Aarif Omar, Jalila Abu, Md Sabri Mohd Yusoff, Loqman Mohamad Yusof
BACKGROUND: The use of a closed fracture model has become the preferred model to study the fracture healing process, given that the periosteum and the soft tissue surrounding the fracture site play an important role in the fracture healing process. Some techniques like osteotomy, drilling the long bones and the use of the guillotine-like apparatus to induce fracture are characterized by some undesirable effects and complications. The aim of this study is to optimize and evaluate an in vivo fracture model using three-point bending pliers that can be used to study secondary bone fracture healing in rats...
May 2, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29675769/cellular-and-molecular-meniscal-changes-in-the-degenerative-knee-a-review
#20
REVIEW
Mariano López-Franco, Enrique Gómez-Barrena
BACKGROUND: The important role of knee menisci to maintain adequate knee function is frequently impaired since early stages of knee joint degeneration. A better understanding of meniscal impairment may help the orthopaedic surgeon to orient the treatment of the degenerative knee. This review focuses on changes in meniscal cells and matrix when degeneration is in progress. MAIN BODY: Differences in the meniscal structure and metabolism have been investigated in the degenerative knee, both in experimental animal models and in surgical specimens...
April 19, 2018: Journal of Experimental Orthopaedics
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