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https://www.readbyqxmd.com/read/28943154/sex-differences-in-leg-dexterity-are-not-present-in-elite-athletes
#1
Emily L Lawrence, Lorenzo Peppoloni, Francisco J Valero-Cuevas
We studied whether the time-varying forces that control unstable foot-ground interactions provide insight into the neural control of dynamic leg function. Twenty elite (10F, 26.4±3.5yrs) and 20 recreational (10F, 24.8±2.4yrs) athletes used an isolated leg to maximally compress a slender spring designed to buckle at low forces while seated. The foot forces during the compression at the edge of instability quantify the maximal sensorimotor ability to control dynamic foot-ground interactions. Using the nonlinear analysis technique of attractor reconstruction, we characterized the spatial (interquartile range IQR) and geometric (trajectory length TL, volume V, and sum of edge lengths SE) features of the dynamical behavior of those force time series...
September 14, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28941968/popliteal-pseudoaneurysm-and-arteriovenous-fistula-after-arthroscopic-anterior-and-posterior-cruciate-ligament-reconstruction-a-case-report
#2
Ding Xu, Liefeng Ji, Jiang Zhu, Yuefeng Xie
INTRODUCTION: Vascular injuries are a well recognised but very rare complication of surgery or trauma around the knee, especially associated with arthroscopic anterior and posterior cruciate ligament reconstruction. PRESENTATION OF CASE: This report describes a case of a Popliteal pseudoaneurysm and arteriovenous fistula after Arthroscopic anterior and Posterior Cruciate Ligament Reconstruction. An 57-year-old male who complained of pain and swelling around the left lower extremity after the ACL and PCL reconstruction using a semitendinosus graft from the two limbs caused by bicycle accident...
August 10, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28941959/translation-cross-adaptation-and-measurement-properties-of-the-brazilian-version-of-the-acl-rsi-scale-and-acl-qol-questionnaire-in-patients-with-anterior-cruciate-ligament-reconstruction
#3
Laryssa Oliveira Silva, Luana Maria Ramos Mendes, Pedro Olavo de Paula Lima, Gabriel Peixoto Leão Almeida
BACKGROUND: Scales to assess the quality of life and return-to-sport after reconstruction of the anterior cruciate ligament (ACL) may help the clinical decision-making process. OBJECTIVE: To cross-culturally adapt and determine the validity of the Brazilian versions of the Anterior Cruciate Ligament Return to Sport after Injury (ACL-RSI) and the Quality of Life Questionnaire (ACL-QoL). METHODS: The process of translation and cross-cultural adaptation followed the recommendations of international guidelines...
September 12, 2017: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/28938385/preoperative-evaluation-and-optimization-for-reconstruction-of-segmental-bone-defects-of-the-tibia
#4
Philip K McClure, Hamza M Alrabai, Janet D Conway
Reconstruction of segmental bone defects requires a large commitment both on the part of the patient and the physician. Investing in preoperative evaluation and optimization is the only logical way to pursue such an endeavor. Unfortunately, detailed studies regarding segmental bone defects and preoperative factors are relatively lacking owing to the relatively low incidence of the problem. Fortunately, other orthopaedic pathologies (arthritis, ligamentous injuries about the knee) have high prevalence and consistency, allowing detailed analysis of preoperative factors...
October 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28933331/-comparison-of-the-arthroscopic-finding-in-the-knee-joint-and-the-mri-retrospective-study
#5
K Šimeček, P Látal, J Duda, M Šimeček
PURPOSE OF THE STUDY Our retrospective study presents the comparison of the preoperative magnetic resonance imaging of the knee joint - MRI - and the arthroscopic finding - ASC. Its aim is to find out how a positive or a negative finding of MRI corresponds with the operative finding and how much the experience of radiologist contributes to the conformity. MATERIAL AND METHODS The MRI findings of knee joints treated surgically at two departments in 2013 and 2014 were assessed. The MRI was performed in a total of 470 patients who subsequently underwent an arthroscopic surgery...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28932876/effective-patellofemoral-joint-stabilization-and-low-complication-rates-using-a-hardware-free-mpfl-reconstruction-technique-with-an-intra-operative-adjustment-of-the-graft-tension
#6
Lars V von Engelhardt, Torsten Fuchs, Pia Weskamp, Joerg Jerosch
PURPOSE: Even if medial patellofemoral ligament (MPFL) reconstruction is a proven method, complications such as implant loosening, patella fractures, recurrent luxations, knee pain or knee stiffness are frequently described. Besides a correct tunnel positioning and implant-specific complications, this might be caused by difficulties with an appropriate graft tensioning. The study presented here is a necessary first step in exploring our technique of a double-limbed, hardware-free MPFL reconstruction, which provides another way to test and adjust the graft tension before permanent fastening...
September 20, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28932303/the-influence-of-anterior-cruciate-ligament-remnant-on-postoperative-clinical-results-in-patients-with-remnant-preserving-anterior-cruciate-ligament-reconstruction
#7
Alan Andonovski, Sonja Topuzovska, Milan Samardziski, Zoran Bozinovski, Biljana Andonovska, Zlatko Temelkovski
BACKGROUND: Anterior Cruciate Ligament (ACL) remnants have important biomechanical, vascular and proprioceptive function. AIM: To determine the influence of the ACL residual remnants after partial and complete ACL ruptures on postoperative clinical results in patients with remnant preserving ACL reconstruction. PATIENTS AND METHODS: The study included 66 patients divided into two groups. In patients from the investigation group remnant preserving ACL reconstruction was performed, in patients from the control group single bundle ACL reconstruction was performed...
August 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28929208/proms-in-paediatric-knee-ligament-injury-use-the-pedi-ikdc-and-avoid-using-adult-proms
#8
REVIEW
M Dietvorst, M Reijman, B van Groningen, M C van der Steen, R P A Janssen
PURPOSE: The aim of this systematic review was to present an evidence-based overview of psychometric properties of patient-reported outcome measures (PROMs) for children with knee ligament injury. METHODS: A systematic search of literature was performed in PubMed, EMBASE and Cochrane databases. The inclusion criteria were diagnostic studies evaluating psychometric properties (validity, reliability, responsiveness) and comprehensibility of PROMs as well as studies including children (age < 18 years) with knee ligament injury...
September 19, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28929187/morden-synthetic-material-is-a-safe-and-effective-alterative-for-medial-patellofemoral-ligament-reconstruction
#9
Paul Y F Lee, David Golding, Sam Rozewicz, Amit Chandratreya
PURPOSE: Medial patellofemoral ligament (MPFL) reconstruction is often performed using gracilis autografts, which may be associated with donor site morbidity and complications. The use of a synthetic material can circumvent a harvest operation and has previously been demonstrated to be effective in other types of reconstructive procedures and may be effective in MPFL reconstruction. This study reports the clinical result with the use of a morden ultra-high molecular weight polyethylene with a braided jacket of polyester tape (FT) in MPFL reconstruction compared to using standard autografts...
September 19, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28928921/an-unusual-cause-of-genu-valgum-and-persistent-instability
#10
Edward Holloway, Paul Sutton, Robert Cooper
We present the case of a professional adolescent footballer who attended our clinic with ongoing instability symptoms and valgus knee deformity after conservative management of an medial collateral ligament injury. The patient was found to have sustained a contra-coup Salter Harris Type V injury to his lateral distal femur physis resulting in premature growth arrest and deformity. Salter Harris Type V injuries are rare, and often not diagnosed until growth has arrest has occurred due to lack of identifiable features on initial plain radiographs...
August 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/28927647/protecting-the-pcl-during-total-knee-arthroplasty-using-a-bone-island-technique
#11
Addison R Wood, Tebyan A Rabbani, Benjamin Sheffer, Russell A Wagner, Hugo B Sanchez
BACKGROUND: Prior studies have shown that the posterior cruciate ligament (PCL) may be partially resected during cruciate retaining (CR) total knee arthroplasty (TKA) using highly experienced hands and standard surgical technique; therefore, proper surgical technique is aimed at preservation and balance of the PCL during CR TKA. The central objective of this study is to evaluate the effectiveness of a simple surgical technique to prevent PCL damage during performance of a CR TKA. METHODS: Sixty embalmed cadaver specimens were randomized into 2 groups, experimental and control...
August 26, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28926386/effect-of-vascular-injury-on-functional-outcome-in-knees-with-multi-ligament-injury-a-matched-cohort-analysis
#12
Thomas L Sanders, Nicholas R Johnson, Nathan M Levy, Peter A Cole, Aaron J Krych, Michael Stuart, Bruce A Levy
BACKGROUND: Multi-ligament knee injury (MLKI) associated with knee dislocation can result in vascular injury. The purpose of this study was to compare knee function after MLKI between patients with a vascular injury requiring popliteal artery bypass grafting and patients without vascular involvement. Additionally, factors associated with poor knee function in patients who had MLKI with vascular injury were evaluated. METHODS: This retrospective study identified patients with an MLKI between 1992 and 2014...
September 20, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28925568/the-fibular-meniscus-of-the-kangaroo-as-an-adaptation-against-external-tibial-rotation-during-saltatorial-locomotion
#13
Adrian C Miller, Martin A Cake, Natalie M Warburton
The kangaroo knee is, as in other species, a complex diarthrodial joint dependent on interacting osseous, cartilaginous and ligamentous components for its stability. While principal load bearing occurs through the femorotibial articulation, additional lateral articulations involving the fibula and lateral fabella also contribute to the functional arrangement. Several fibrocartilage and ligamentous structures in this joint remain unexplained or have been misunderstood in previous studies. In this study, we review the existing literature on the structure of the kangaroo 'knee' before providing a new description of the gross anatomical and histological structures...
September 19, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28922423/proprioception-in-patients-with-posterior-cruciate-ligament-tears-a-meta-analysis-comparison-of-reconstructed-and-contralateral-normal-knees
#14
Jung-Ro Yoon, Dae-Hee Lee, Seung-Nam Ko, Young-Soo Shin
Posterior cruciate ligament (PCL) reconstruction for patients with PCL insufficiency has been associated with postoperative improvements in proprioceptive function due to mechanoreceptor regeneration. However, it is unclear whether reconstructed PCL or contralateral normal knees have better proprioceptive function outcomes. This meta-analysis was designed to compare the proprioceptive function of reconstructed PCL or contralateral normal knees in patients with PCL insufficiency. All studies that compared proprioceptive function, as assessed with threshold to detect passive movement (TTDPM) or joint position sense (JPS) in PCL reconstructed or contralateral normal knees were included...
2017: PloS One
https://www.readbyqxmd.com/read/28922015/over-the-top-acl-reconstruction-plus-extra-articular-lateral-tenodesis-with-hamstring-tendon-grafts-prospective-evaluation-with-20-year-minimum-follow-up
#15
Stefano Zaffagnini, Giulio Maria Marcheggiani Muccioli, Alberto Grassi, Tommaso Roberti di Sarsina, Federico Raggi, Cecilia Signorelli, Francisco Urrizola, Paolo Spinnato, Eugenio Rimondi, Maurilio Marcacci
BACKGROUND: There are few published studies with very long-term follow-up of combined intra- and extra-articular anterior cruciate ligament (ACL) reconstruction. PURPOSE: To analyze clinical and radiographic outcomes of over-the-top ACL reconstruction plus extra-articular lateral tenodesis with autologous hamstrings at minimum 20-year follow-up. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: Of 60 originally eligible patients who underwent over-the-top ACL reconstruction with double-stranded hamstring tendon (leaving intact graft tibial insertions) and extra-articular lateral plasty (performed with the remnant part of tendons), 52 were prospectively evaluated at a minimum 20-year follow-up (mean follow-up, 24 years; 41 men, 11 women; mean age at time of surgery, 25...
September 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28921609/biomarkers-for-equine-joint-injury-and-osteoarthritis
#16
REVIEW
C Wayne McIlwraith, Christopher E Kawcak, David D Frisbie, Christopher B Little, Peter D Clegg, Mandy J Peffers, Morten A Karsdal, Stina Ekman, Sheila Laverty, Richard A Slayden, Linda J Sandell, L Stefan Lohmander, Virginia B Kraus
We report the results of a symposium aimed at identifying validated biomarkers that can be used to complement clinical observations for diagnosis and prognosis of joint injury leading to equine osteoarthritis (OA). Biomarkers might also predict pre-fracture change that could lead to catastrophic bone failure in equine athletes. The workshop was attended by leading scientists in the fields of equine and human musculoskeletal biomarkers to enable cross-disciplinary exchange and improve knowledge in both. Detailed proceedings with strategic planning was written, added to, edited and referenced to develop this manuscript...
September 16, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28920170/meniscal-extrusion-seen-on-ultrasonography-affects-the-development-of-radiographic-knee-osteoarthritis-a-3-year-prospective-cohort-study
#17
Daisuke Chiba, Shugo Maeda, Eiji Sasaki, Seiya Ota, Shigeyuki Nakaji, Eiichi Tsuda, Yasuyuki Ishibashi
The objective of this study is to determine whether meniscal extrusion (ME) of the medial meniscus on ultrasonography affects knee osteoarthritis (KOA) progression during 3-year follow-up. Two hundred seventy volunteers (70 men, 200 women; mean age 60.5 years) participated. Weight-bearing radiographs were evaluated. All subjects had medial radiographic KOA (Kellgren-Lawrence grade [KLG], ≥ 2) in at least one knee at baseline (BL). KLG 2 was defined as moderate KOA (MKOA); KLG 3 and 4 were defined as severe KOA (SKOA)...
September 17, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28919608/arthroscopic-anterior-cruciate-ligament-reconstruction-with-triplet-autograft-of-semitendinosus-tendon
#18
M Z Islam, M Rahman, M E Ali, M K Alam, W Ahmed, M T Alam, M K Saha
Anterior cruciate ligament (ACL) is the most commonly injured ligament occurs in young adult population, which markedly reduces activity level. Anterior cruciate ligament rupture is a threat to the homeostasis of the knee. So, reconstruction of the ACL is necessary to make them fit and return to their pre-injury activity level. The choice of graft for ACL reconstruction is a matter of debate, with the BPTB graft and quadruple graft of ST-G being the two most popular options. Use of triplet graft of semi-tendinosus tendon alone without sacrificing gracilis is another option...
July 2017: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/28919498/accelerated-return-to-sport-after-acl-reconstruction-and-early-knee-osteoarthritis-features-at-1-year-an-exploratory-study
#19
Adam G Culvenor, Brooke E Patterson, Ali Guermazi, Hayden G Morris, Timothy S Whitehead, Kay M Crossley
BACKGROUND: A timely return to competitive sport is a primary goal of anterior cruciate ligament reconstruction (ACLR). It is not known if an accelerated return-to-sport increases the risk of early-onset knee osteoarthritis (KOA). OBJECTIVE: To determine whether an accelerated return-to-sport post-ACLR (i.e., <10 months) is associated with increased odds of early KOA features on MRI 1-year post-surgery, and to evaluate the relationship between an accelerated return-to-sport and early KOA features stratified by type of ACL injury (isolated or concurrent chondral/meniscal injury) and lower-limb function (good or poor)...
September 14, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28918789/-treatment-of-anterior-cruciate-ligament-ruptures
#20
Uffe Jørgensen, Michal Rindom Krogsgaard
Anterior cruciate ligament (ACL) injuries are typically seen in cutting sports. Rehabilitation can be tried in athletes in non-cutting sports and in recreational athletes. If knee instability is experienced, the cessation of risk activities or reduction in activity level are recommended. With recurrent episodes of instability ACL-reconstruction is recommended. 65% return to sports at preinjury level after ACL-reconstruction, 18% after non-operated partial rupture and 7% after non-operated total rupture.
September 18, 2017: Ugeskrift for Laeger
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