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Journal of Experimental Orthopaedics

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https://read.qxmd.com/read/30820763/biplane-opening-wedge-high-tibial-osteotomy-with-a-distal-tuberosity-osteotomy-radiological-and-clinical-analysis-with-minimum-follow-up-of-2-years
#1
Juan Erquicia, Pablo Eduardo Gelber, Simone Perelli, Federico Ibañez, Maximiliano Ibañez, Xavier Pelfort, Juan Carlos Monllau
BACKGROUND: High tibial osteotomy is an established and helpful treatment for unicompatimental osteoarthritis associated with varus deformity. However, asupratubercle high tibial osteotomy leads to a decrease in patellar height making the technique not suitable in case of concomitant patella baja. Moreover, this kind of osteotomy can change in situ forces at patellofemoral joint and the lateral patellar tilt. With the aim to widen the indication of high tibial osteotomy was proposed a biplane opening wedge high tibial osteotomy with a distal tuberosity osteotomy (B-OWHTO)...
February 28, 2019: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/30805747/influence-of-uncemented-humeral-stem-proximal-geometry-on-stress-distributions-and-torsional-stability-following-total-shoulder-arthroplasty
#2
Johannes Barth, Jérôme Garret, Laurent Geais, Hugo Bothorel, Mo Saffarini, Arnaud Godenèche
BACKGROUND: While surgeons tend to implant larger stems to improve torsional stability, numerous studies demonstrated that increasing humeral stem diameter could exacerbate stress-shielding and lead to bone resorption. We aimed to determine the influence of humeral stem proximal geometry on stress distributions and torsional stability following total shoulder arthroplasty. METHODS: Preoperative computed tomography scans were acquired from 5 patients and processed to form 3-dimensional models of the proximal humerus...
February 25, 2019: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/30805738/advances-in-modern-osteotomies-around-the-knee-report-on-the-association-of-sports-traumatology-arthroscopy-orthopaedic-surgery-rehabilitation-astaor-moscow-international-osteotomy-congress-2017
#3
REVIEW
Liang Gao, Henning Madry, Dmitrii V Chugaev, Matteo Denti, Aleksandr Frolov, Mikhail Burtsev, Nina Magnitskaya, Victor Mukhanov, Philippe Neyret, Leonid N Solomin, Evgeniy Sorokin, Alex E Staubli, Kevin R Stone, Viktor Vilenskiy, Vitaliy Zayats, Dietrich Pape, Andrey Korolev
Corrective lower limb osteotomies are innovative and efficient therapeutic procedures for restoring axial alignment and managing unicompartmental knee osteoarthritis. This review presents critical insights into the up-dated clinical knowledge on osteotomies for complex posttraumatic or congenital lower limb deformities with a focus on high tibial osteotomies, including a comprehensive overview of basic principles of osteotomy planning, biomechanical considerations of different implants for osteotomies and insights in specific bone deformity correction techniques...
February 25, 2019: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/30729344/knee-biomechanics-changes-under-dual-task-during-single-leg-drop-landing
#4
Masaya Kajiwara, Akihiro Kanamori, Hideki Kadone, Yusuke Endo, Yasuto Kobayashi, Kojiro Hyodo, Tatsuya Takahashi, Norihito Arai, Yu Taniguchi, Tomokazu Yoshioka, Masashi Yamazaki
No abstract text is available yet for this article.
February 7, 2019: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/30729340/evaluation-kinaesthetic-proprioceptive-deficit-after-knee-anterior-cruciate-ligament-acl-reconstruction-in-athletes
#5
E Laboute, E Verhaeghe, O Ucay, A Minden
PURPOSE: The objective of this study was to evaluate kinaesthetic proprioceptive deficit after knee anterior cruciate ligament (ACL) reconstruction in two populations of athletes, those in the post-surgery period and those in re-training during the intensive program-training phase. METHODS: We performed a prospective study in ACL-operated athletes without previous knee injuries, with 32 athletes in each group. Time since surgery in the operated athletes in the post-surgery group was 21 to 35 days, and between three and 9 months in the re-training group...
February 7, 2019: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/30729337/plantar-pressure-changes-in-hindfoot-relief-devices-of-different-designs
#6
F Mazur, B Swoboda, H D Carl, C Lutter, M Engelhardt, M W Hoppe, T Hotfiel, C Grim
BACKGROUND: It is frequently observed that overloading the foot can impair bone and soft tissue healing and can lead to harmful sequelae (i.e. ulcers, stress reactions) in context of pre-existing tissue disabilities. In terms of offloading, hindfoot relief devices are commonly applied as a non-operative treatment as well as after various surgical procedures for hindfoot disorders. Despite their common use, there is a paucity of data comparing different orthotic devices with respect to changes in plantar pressure distributions...
February 7, 2019: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/30712144/growth-factor-levels-in-leukocyte-poor-platelet-rich-plasma-and-correlations-with-donor-age-gender-and-platelets-in-the-japanese-population
#7
Yu Taniguchi, Tomokazu Yoshioka, Hisashi Sugaya, Masahiko Gosho, Katsuya Aoto, Akihiro Kanamori, Masashi Yamazaki
BACKGROUND: Clinical application of platelet-rich-plasma (PRP) has been accelerated to investigate early recovery from various musculoskeletal conditions. It involves the promotion of tissue damage repair through the action of multiple growth factors at physiological concentrations. The composition of PRP differs based on many factors, which may include age and gender. Therefore, we analyzed correlations between age, gender, and platelet counts in PRP with growth factors in Japanese subjects...
February 2, 2019: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/30694409/capsular-plication-in-the-non-deformity-hip-impact-on-post-operative-joint-stability
#8
Etienne L Belzile, Mathieu Hébert, Nicolas Janelle, Benoit Lechasseur, Yoann Dessery, Olufemi R Ayeni, Philippe Corbeil
PURPOSE AND HYPOTHESIS: The aim of this study was to evaluate the hip joint range of motion after different capsular plication. The study hypothesis proposed that capsular plication after hip arthroscopy may reduce hip external rotation and thus prevent the hip joint instability created by arthroscopic capsulotomies. METHODS: Six fresh frozen human cadavers were studied in the intact state (5 males, 1 females) for a total of 12 non-deformity hips tested. They were fixed to the operating room table using a custom-made apparatus...
January 29, 2019: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/30689117/anatomic-study-of-the-medial-side-of-the-ankle-base-on-the-joint-capsule-an-alternative-description-of-the-deltoid-and-spring-ligament
#9
Kentaro Amaha, Akimoto Nimura, Reiko Yamaguchi, Natnicha Kampan, Atsushi Tasaki, Kumiko Yamaguchi, Ryuichi Kato, Keiichi Akita
BACKGROUND: Adult acquired flatfoot deformity (AAFD) is caused by impaired medial ligamentous structures and posterior tibialis tendon dysfunction (PTTD). Although degeneration and trauma could separately cause AAFD, how these factors interact in the pathomechanism of AAFD is unclear. The joint capsule in the medial ankle is considered an important structure, providing passive stability by limiting joint movement. Previous reports on the joint capsule suggest its involvement in pathological changes of the ankle, but because of the high priority placed on the ligaments, few reports address the ankle joint from the joint capsule standpoint...
January 28, 2019: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/30637524/the-history-of-radiofrequency-energy-and-coblation-in-arthroscopy-a-current-concepts-review-of-its-application-in-chondroplasty-of-the-knee
#10
REVIEW
Scott R Anderson, Scott C Faucett, David C Flanigan, Ralph A Gmabardella, Nirav H Amin
Radiofrequency energy has had widespread use for a variety of surgical procedures. Its application in orthopedic surgery initiated with shoulder instability. Over the last couple decades it has been applied as surgical tool for cartilage treatment as well. There have been significant gains in its technology and our understanding of its potential benefits. We address its history and advancements in becoming a surgical tool for cartilage lesions along with a review of recent long-term follow up studies.
January 14, 2019: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/30578465/effect-of-geometric-variations-on-tibiofemoral-surface-and-post-cam-design-of-normal-knee-kinematics-restoration
#11
Yong-Gon Koh, Ji-Hoon Nam, Kyoung-Tak Kang
BACKGROUND: Restoration of natural knee kinematics for a designed mechanism in knee implants is required to achieve full knee function in total knee arthroplasty (TKA). In different posterior-stabilized TKAs, there are wide variations in tibiofemoral surfaces and post-cam design. However, it is not known whether these design variations preserve natural knee kinematics. The purpose of this study was to determine the most appropriate tibiofemoral surface and post-cam designs to restore natural knee kinematics of the TKA...
December 21, 2018: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/30569417/autologous-micro-fragmented-adipose-tissue-for-the-treatment-of-diffuse-degenerative-knee-osteoarthritis-an-update-at-3-year-follow-up
#12
A Russo, D Screpis, S L Di Donato, S Bonetti, G Piovan, C Zorzi
BACKGROUND: Conservative therapies for the treatment of knee degenerative processes are used before resorting to surgery; nonetheless, they may offer only short-term benefits. Encouraging preliminary results have been reported using mesenchymal stem cells (MSCs), either alone or in association with surgery. Among the many sources, adipose tissue has created a huge interest, because of its anti-inflammatory and regenerative properties ascribed to the cells of its stromal vascular fraction...
December 19, 2018: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/30569208/biomechanical-evaluation-of-two-minimal-access-interbody-cage-designs-in-a-cadaveric-model
#13
D Kok, C M M Peeters, F H Wapstra, S K Bulstra, A G Veldhuizen
BACKGROUND: Different interbody grafts have been employed and evaluated for spinal fusion surgery. The Memory Metal Minimal Access Cage (MAC) is a hollow horseshoe shaped interbody fusion concept which provides a potentially major advantage with their small cage contact area and large graft space in comparison with other vertical cages. METHODS: This Biomechanical Cadaveric Study evaluates the primary stability and the amount of acute subsidence occurring in two new MAC cage designs; the Niti-l and Niti-s...
December 19, 2018: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/30564981/proximity-of-the-neurovascular-structures-during-all-inside-lateral-meniscal-repair-in-children-a-cadaveric-study
#14
Yi-Meng Yen, Peter D Fabricant, Connor G Richmond, Aleksei B Dingel, Matthew D Milewski, Henry B Ellis, Philip L Wilson, Stephanie W Mayer, Theodore J Ganley, Kevin G Shea
PURPOSE: Meniscal repair has become increasingly common in a pediatric and adolescent population. All-inside repair techniques are utilized more often given their ease of insertion and decreased operative time required. However, there are possible risks including damage to adjacent neurovascular structures. The purpose of this study to was examine the proximity of the neurovascular structures during lateral meniscus repairs in pediatric specimens simulating a worst-case scenario. METHODS: Ten pediatric cadaveric knees (age 4-11) were utilized and simulated lateral meniscal repair through the posterior horn of the lateral meniscus and both medial and lateral to the popliteal hiatus through the body of the lateral meniscus was performed with an all-inside meniscal repair device...
December 18, 2018: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/30535762/medial-collateral-ligament-laxity-in-valgus-knee-deformity-before-and-after-medial-closing-wedge-high-tibial-osteotomy-measured-with-instrumented-laxity-measurements-and-patient-reported-outcome
#15
W A M van Lieshout, C D Martijn, B T J van Ginneken, R J van Heerwaarden
INTRODUCTION: Medial closing wedge high tibial osteotomy (CWHTO) for valgus deformity correction was first described by Coventry whom performed an additional reefing of the medial collateral ligament (MCL) to prevent instability postoperative. In our clinic the additional reefing procedure has never been performed and instability has not been reported routinely by patients. Using instrumented laxity testing, pre- and postoperative valgus and varus knee laxity can be measured objectively...
December 10, 2018: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/30483889/mechanical-assessment-of-tripled-hamstring-tendon-graft-when-using-suspensory-fixation-for-cruciate-ligament-reconstruction
#16
I Geethan, K Santhosh Sahanand, P R Ashwin Vijay, David V Rajan
BACKGROUND: Tripling semitendinosus tendon for ACL graft preparation facilitates creation of longer and thicker grafts. Our objective was to evaluate the mechanical difference between tripled tendon grafts, prepared by three methods, by comparing with quadrupled tendon graft. METHODS: Bovine hind-foot hoof extensors were allocated to four groups. Group I had quadrupled graft construct. Tripled graft constructs were prepared by passing the tendon to the Endobutton CL loop and stitching the third strand to (i) the loop (in Group II) or (ii) to one strand(in Group III) or (iii)to loop and both tendon strands (in Group IV)...
November 27, 2018: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/30374787/iodine-contrast-agents-do-not-influence-platelet-rich-plasma-function-at-an-early-time-point-in-vitro
#17
B Dallaudiere, A Crombé, A P Gadeau, L Pesquer, A Peuchant, C James, A Silvestre
BACKGROUND: Iodine contrast agents (ICAs) are routinely used by radiologists to help guide intra-articular infiltrations. The aim of this study was to assess the in vitro effects of ICA on platelet function of human autologous Platelet-Rich Plasma (PRP). METHODS: One hundred thirty-seven consecutive patients with symptomatic femoral-patellar osteoarthritis were included. All were addressed to our institution for a fluoroscopy-guided intra-articular PRP infiltration of the pathological femoral-patellar joint...
October 29, 2018: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/30341552/accuracy-and-reliability-of-knee-goniometry-methods
#18
Graeme Ethan Hancock, Tracey Hepworth, Kevin Wembridge
BACKGROUND: Measuring knee range of motion is important in examination and as a post-operative outcome. It is therefore important that measurements are accurate. Knee angles can be measured by traditional goniometers, smartphone apps are readily available and there are also purpose made digital devices. Establishing the minimum difference between methods is essential to monitor change. The purpose of this study was to assess reliability and minimum significant difference of visual estimation, short and long arm goniometers, a smartphone application and a digital inclinometer...
October 19, 2018: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/30315425/force-measurement-metrics-for-simulated-elbow-arthroscopy-training
#19
Nick F J Hilgersom, Tim Horeman-Franse, Ronald L A W Bleys, Denise Eygendaal, Michel P J van den Bekerom, Gabriëlle J M Tuijthof
BACKGROUND: Elbow arthroscopy is a difficult surgical technique. Objective metrics can be used to improve safe and effective training in elbow arthroscopy. Force exerted on the elbow tissue during arthroscopy can be a measure of safe tissue manipulation. The purpose of this study was to determine the force magnitude and force direction used by experts during arthroscopic elbow navigation in cadaveric specimens and assess their applicability in elbow arthroscopy training. METHODS: Two cadaveric elbows were mounted on a Force Measurement Table (FMT) that allowed 3-dimensional measurements (x-, y-, and z-plane) of the forces exerted on the elbow...
October 11, 2018: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/30306337/rehabilitation-strategies-for-optimisation-of-functional-recovery-after-major-joint-replacement
#20
EDITORIAL
Thomas Bandholm, Thomas W Wainwright, Henrik Kehlet
Exercise-based interventions applied before and after total hip and knee arthroplasty (THA and TKA, respectively) have been investigated for a number of years, based on the assumption that they will enhance post-operative recovery. Although recent studies suggest that high-volume, pre-operative exercise may enhance post-operative recovery after TKA, studies of post-operative exercise-based interventions, have not found superiority of one exercise regime over another. It seems, however, that post-operative, exercise-based, rehabilitation is superior to no or minimal rehabilitation after THA and TKA...
October 11, 2018: Journal of Experimental Orthopaedics
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