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https://www.readbyqxmd.com/read/28079306/open-dislocation-of-ankle-without-fracture-treated-with-an-external-fixator
#1
Emrah Sayit, Asli Tanrivermis Sayit, Elcin Zan
Ankle dislocations are orthopedic emergencies that require immediate treatment to avoid neurovascular impairment. They are usually accompanied by one or more comminuted fractures of the ankle mortis. In rare circumstances, such as high-energy trauma, the ankle dislocations may not be accompanied by concomitant malleolar fractures and, thus, are named "pure ankle dislocations". We presented a very rare and interesting case of an open medial dislocation of the ankle without associated fracture in an 18-year-old man with no known predisposing risk factors...
January 12, 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28078394/kinematics-of-a-bicruciate-retaining-total-knee-arthroplasty
#2
Thomas J Heyse, Joshua Slane, Geert Peersman, Margo Dirckx, Arne van de Vyver, Philipp Dworschak, Susanne Fuchs-Winkelmann, Lennart Scheys
PURPOSE: The recently reintroduced bicruciate-retaining Total Knee Arthroplasty (BCR TKA) is an interesting approach in the quest for close replication of knee joint biomechanics and kinematics closer to the native knee. Therefore, this study aimed at providing a detailed biomechanical view on the functional resemblance of BCR TKA to the native knee joint. METHODS: Seven fresh-frozen full leg cadaver specimens (76 ± 10 year) were mounted in a 6 degrees-of-freedom kinematic rig that applied a dynamic squatting motion knee flexion...
January 11, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28077396/the-effects-of-kinematically-aligned-total-knee-arthroplasty-on-stress-at-the-medial-tibia-a-case-study-for-varus-knee
#3
S Nakamura, Y Tian, Y Tanaka, S Kuriyama, H Ito, M Furu, S Matsuda
OBJECTIVES: Little biomechanical information is available about kinematically aligned (KA) total knee arthroplasty (TKA). The purpose of this study was to simulate the kinematics and kinetics after KA TKA and mechanically aligned (MA) TKA with four different limb alignments. MATERIALS AND METHODS: Bone models were constructed from one volunteer (normal) and three patients with three different knee deformities (slight, moderate and severe varus). A dynamic musculoskeletal modelling system was used to analyse the kinematics and the tibiofemoral contact force...
January 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28067582/the-relationship-of-hip-muscle-performance-to-leg-ankle-and-foot-injuries-a-systematic-review
#4
Nili Steinberg, Gali Dar, Martin Dunlop, James Edmund Gaida
OBJECTIVES: Hip control affects movement and muscle firing patterns in the leg, ankle and foot, and may contribute to overuse injuries. Muscle performance can be measured as strength, endurance or muscle activation patterns. Our objective was to systematically review whether hip muscle performance is associated with leg, ankle and foot injuries. DATA SOURCES: A structured and comprehensive search of six medical literature databases was combined with forward and backward citation tracking (AMED, CINAHL, EMBASE, Medline, Scopus and SportDiscus)...
January 9, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/28056178/is-there-any-benefit-in-anterior-cruciate-ligament-reconstruction-in-patients-older-than-60-years
#5
Cécile Toanen, Guillaume Demey, Panagiotis G Ntagiopoulos, Paolo Ferrua, David Dejour
BACKGROUND: Results of anterior cruciate ligament (ACL) reconstruction are traditionally excellent in younger and nonarthritic patients. During the past few decades, people older than 60 years have become more active than ever, with more demanding physical lifestyles. An increase also has been noted in active patients with diagnosed ACL injuries. More patients are requesting treatment for ACL deficiency in hopes of returning to preinjury levels of activity. PURPOSE: The aims of this study were to evaluate the results of ACL reconstruction in patients older than 60 years in terms of functional recovery, return to sports, and postoperative incidence of osteoarthritis and to compare their results with published results of different age groups...
December 1, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28012003/effect-of-radial-meniscal-tear-on-in-situ-forces-of-meniscus-and-tibiofemoral-relationship
#6
Yuta Tachibana, Tatsuo Mae, Hiromichi Fujie, Konsei Shino, Tomoki Ohori, Hideki Yoshikawa, Ken Nakata
PURPOSE: To clarify the effect of the radial tear of the lateral meniscus on the in situ meniscus force and the tibiofemoral relationship under axial loads and valgus torques. METHODS: Ten intact porcine knees were settled to a 6-degree of freedom robotic system, while the force and 3-dimensional path of the knees were recorded via Universal Force Sensor (UFS) during 3 cycles of 250-N axial load and 5-Nm valgus torque at 15°, 30°, 45°, and 60° of knee flexion...
December 23, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27975013/free-medial-plantar-flap-connection-with-a-posterior-tibial-artery-flap-in-reconstruction-of-fore-mid-foot-skin-defect
#7
Hao Wu, Jia-Gen Sheng, Chang-Qing Zhang
BACKGROUND: Although there are many surgical treatments for covering the skin defect of the fore-mid foot, how to reconstruct the weight-bearing region remains a challenge. The weight-bearing region of the sole needs to withstand the pressure and shearing stresses of walking, so the plantar skin is anatomically different from other skins in the areas of texture, thickness, subcutaneous tissue, etc. Medial plantar flaps that are harvested from the instep region are regarded as the first choice for weight-bearing region reconstruction because of their excellent functional and aesthetic long-term result...
November 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/27936066/the-influence-of-articular-cartilage-thickness-reduction-on-meniscus-biomechanics
#8
Piotr Łuczkiewicz, Karol Daszkiewicz, Jacek Chróścielewski, Wojciech Witkowski, Pawel J Winklewski
OBJECTIVE: Evaluation of the biomechanical interaction between meniscus and cartilage in medial compartment knee osteoarthritis. METHODS: The finite element method was used to simulate knee joint contact mechanics. Three knee models were created on the basis of knee geometry from the Open Knee project. We reduced the thickness of medial cartilages in the intact knee model by approximately 50% to obtain a medial knee osteoarthritis (OA) model. Two variants of medial knee OA model with congruent and incongruent contact surfaces were analysed to investigate the influence of congruency...
2016: PloS One
https://www.readbyqxmd.com/read/27835043/risk-factors-for-medial-tibial-stress-syndrome-in-active-individuals-an-evidence-based-review
#9
Zachary K Winkelmann, Dustin Anderson, Kenneth E Games, Lindsey E Eberman
: Reference/Citation: Hamstra-Wright KL, Bliven KC, Bay C. Risk factors for medial tibial stress syndrome in physically active individuals such as runners and military personnel: a systematic review and meta-analysis. Br J Sports Med. 2015;49(6)362-369. CLINICAL QUESTION:  What factors put physically active individuals at risk to develop medial tibial stress syndrome (MTSS)? DATA SOURCES:  The authors performed a literature search of CINAHL, the Cochrane Central Register of Controlled Trials, EMBASE, and MEDLINE from each database's inception to July 2013...
November 1, 2016: Journal of Athletic Training
https://www.readbyqxmd.com/read/27825417/evaluation-of-the-morphology-and-function-of-medial-collateral-ligament-aftertotal-knee-arthroplasty-with-high-frequency-ultrasound
#10
Ling Jiang, Yan-Qing Liu, Li-Gang Cui, Ying Meng, Hua Tian, Ke Zhang, Jin-Rui Wang
Objective To explore the feasibility and clinical value of ultrasonography in evaluating the morphology and function of medial collateral ligaments (MCL) after total knee arthroplasty (TKA). Methods Totally 38 patients undergoing routine KTA (group A) and 22 patients undergoing constrained condylar knee arthroplasty KTA with MCL injury (group B) were included. Long axis views of MCL were taken and the MCL thickness was measured on femur side and tibial side 1 cm away from the joint line, respectively. The thicknesses were compared between the two groups...
October 10, 2016: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/27747928/bmi-related-microstructural-changes-in-the-tibial-subchondral-trabecular-bone-of-patients-with-knee-osteoarthritis
#11
Nicolas Reina, Etienne Cavaignac, Régis Pailhé, Aymeric Pailliser, Nicolas Bonnevialle, Pascal Swider, Jean-Michel Laffosse
Overweight is a risk factor for osteoarthritis on the knees. Subchondral trabecular bone (SCTB) densification has been shown to be associated with cartilage degeneration. This study analyzed the microarchitectural changes in the SCTB of tibial plateaus to validate the hypothesis that the degree of remodeling is correlated with a patient's body weight. Twenty-one tibial plateaus were collected during total knee arthroplasty from 21 patients (15 women and 6 men). These patients had a mean age of 70.4 years (49-81), mean weight of 74...
October 17, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/27729482/medial-tibial-stress-syndrome-in-active-individuals-a-systematic-review-and-meta-analysis-of-risk-factors
#12
Mark F Reinking, Tricia M Austin, Randy R Richter, Mary M Krieger
CONTEXT: Medial tibial stress syndrome (MTSS) is a common condition in active individuals and presents as diffuse pain along the posteromedial border of the tibia. OBJECTIVE: To use cross-sectional, case-control, and cohort studies to identify significant MTSS risk factors. DATA SOURCES: Bibliographic databases (PubMed, Scopus, CINAHL, SPORTDiscus, EMBASE, EBM Reviews, PEDRo), grey literature, electronic search of full text of journals, manual review of reference lists, and automatically executed PubMed MTSS searches were utilized...
October 11, 2016: Sports Health
https://www.readbyqxmd.com/read/27709059/medial-opening-wedge-proximal-tibial-osteotomy
#13
Jorge Chahla, Chase S Dean, Justin J Mitchell, Gilbert Moatshe, Raphael Serra Cruz, Robert F LaPrade
Genu varus malalignment can lead to medial compartment overload and progression of ipsilateral compartment osteoarthritis. To slow this process, a medial opening wedge proximal tibial osteotomy (PTO) can be performed. This type of PTO is indicated in patients with genu varus malalignment and isolated medial compartment osteoarthritis of the knee, prior to or concurrent with medial compartment cartilage procedures or meniscal transplants, chronic posterolateral corner deficiency, or chronic anterior cruciate ligament deficiency...
August 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27693442/hip-abductor-strength-and-lower-extremity-running-related-injury-in-distance-runners-a-systematic-review
#14
REVIEW
Matthew D Mucha, Wade Caldwell, Emily L Schlueter, Carly Walters, Amy Hassen
OBJECTIVES: Determine the association between hip abduction strength and lower extremity running related injury in distance runners. DESIGN: Systematic review. METHODS: Prospective longitudinal and cross sectional studies that quantified hip abduction strength and provided diagnosis of running related injury in distance runners were included and assessed for quality. Effect size was calculated for between group differences in hip abduction strength...
September 20, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27676145/is-there-a-relationship-between-bone-morphology-and-injured-ligament-on-imaging-studies-and-laxity-on-ankle-stress-radiographs
#15
S Y Lee, S-S Kwon, M S Park, M K Chung, K B Kim, S Koo, K M Lee
This study aimed to investigate the relationship between bone morphology and injured ligaments on imaging studies and laxity on ankle stress radiographs in patients with lateral ankle instability. In total, 115 patients who had undergone ankle MRI, ankle radiography, and stress radiography were included. Distal tibial articular surface angle, bimalleolar tilt, medial and lateral malleolar relative length, medial malleolar slip angle, anterior inclination of the tibia, and fibular position were measured on ankle radiographs...
December 2016: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/27640922/shockwave-treatment-for-medial-tibial-stress-syndrome-a-randomized-double-blind-sham-controlled-pilot-trial
#16
Phil Newman, Gordon Waddington, Roger Adams
OBJECTIVES: Up to 35% of runners develop medial tibial stress syndrome (MTSS) which often results in lengthy disruption to training and sometimes affects daily activities. There is currently no high quality evidence to support any particular intervention for MTSS. This study aims to investigate the effect of shockwave therapy for MTSS. DESIGN: A randomized, sham-controlled, pilot trial in a university-based health clinic including 28 active adults with MTSS. METHODS: Intervention included standard dose shockwave therapy for the experimental group versus sham dose for the control group, delivered during Week 1-3, 5 and 9...
August 5, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27632881/atrophy-and-depigmentation-after-pretibial-corticosteroid-injection-for-medial-tibial-stress-syndrome-two-case-reports
#17
Miette F Loopik, Marinus Winters, Maarten H Moen
INTRODUCTION: No reports have been published on the results of corticosteroid injections for medial tibial stress syndrome (MTSS). CASE PRESENTATION: The authors present 2 cases of women with MTSS who showed atrophy and depigmentation of the skin after pretibial corticosteroid injections. Case 1 is an 18-y-old woman presenting with pain in her lower leg for 12 mo. No improvement was noticed after conservative treatment, so she received local injections with corticosteroids...
December 2016: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/27612357/short-term-results-of-a-rehabilitation-program-for-service-members-with-lower-leg-pain-and-the-evaluation-of-patient-characteristics
#18
Mariëtte Z Meulekamp, Wieteke Sauter, Marieke Buitenhuis, Agali Mert, Peter van der Wurff
INTRODUCTION: Lower leg pain (LLP), including medial tibial stress syndrome (MTSS) and chronic exertional compartment syndrome (CECS), remains a major problem for the military. OBJECTIVE: Evaluation of patient characteristics and short-term results of the rehabilitation program for service members used in the Military Rehabilitation Centre Aardenburg. METHODS: This retrospective study includes 161 service members of the Netherlands Armed Forces...
September 2016: Military Medicine
https://www.readbyqxmd.com/read/27593733/medial-tibial-stress-shielding-a-limitation-of-cobalt-chromium-tibial-baseplates
#19
J Ryan Martin, Chad D Watts, Daniel L Levy, Raymond H Kim
BACKGROUND: Stress shielding is a well-recognized complication associated with total knee arthroplasty. However, this phenomenon has not been thoroughly described. Specifically, no study to our knowledge has evaluated the radiographic impact of utilizing various tibial component compositions on tibial stress shielding. METHODS: We retrospectively reviewed 3 cohorts of 50 patients that had a preoperative varus deformity and were implanted with a titanium, cobalt chromium (CoCr), or an all polyethylene tibial implant...
August 9, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27530386/global-rotation-has-high-sensitivity-in-acl-lesions-within-stress-mri
#20
João Espregueira-Mendes, Renato Andrade, Ana Leal, Hélder Pereira, Abdala Skaf, Sérgio Rodrigues-Gomes, J Miguel Oliveira, Rui L Reis, Rogério Pereira
PURPOSE: This study aims to objectively compare side-to-side differences of P-A laxity alone and coupled with rotatory laxity within magnetic resonance imaging, in patients with total anterior cruciate ligament (ACL) rupture. METHODS: This prospective study enrolled sixty-one patients with signs and symptoms of unilateral total anterior cruciate ligament rupture, which were referred to magnetic resonance evaluation with simultaneous instrumented laxity measurements...
August 16, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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