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https://www.readbyqxmd.com/read/28650739/the-effect-of-high-intensity-exercise-and-anticipation-on-trunk-and-lower-limb-biomechanics-during-a-crossover-cutting-manoeuvre
#1
Enda F Whyte, Chris Richter, Siobhan O'connor, Kieran A Moran
We investigated the effects of high intensity, intermittent exercise (HIIP) and anticipation on trunk, pelvic and lower limb biomechanics during a crossover cutting manoeuvre. Twenty-eight male, varsity athletes performed crossover cutting manoeuvres in anticipated and unanticipated conditions pre- and post-HIIP. Kinematic and kinetic variables were captured using a motion analysis system. Statistical parametric mapping (repeated-measures ANOVA) was used to identify differences in biomechanical patterns. Results demonstrated that both unanticipation and fatigue (HIIP) altered the biomechanics of the crossover cutting manoeuvre, whereas no interactions effects were observed...
June 26, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28649018/rear-foot-kinematics-when-wearing-lateral-wedge-insoles-and-foot-alignment-influence-the-effect-of-knee-adduction-moment-for-medial-knee-osteoarthritis
#2
Tomonori Sawada, Kenji Tanimoto, Kazuki Tokuda, Yoshitaka Iwamoto, Yuta Ogata, Masaya Anan, Makoto Takahashi, Nobuhiro Kito, Koichi Shinkoda
Lateral wedge insoles (LWIs) are prescribed for patients with medial knee osteoarthritis to reduce the external knee adduction moment (KAM). However, the biomechanical effects of LWIs are limited in some patients. The purpose of this study was to investigate whether the biomechanical effects of LWIs depend on individual foot alignment and to examine the relationship between change in KAM and changes in foot and ankle biomechanics when wearing LWIs. Twenty-one patients participated in this study. They were categorized into normal or abnormal foot groups based on the foot posture index (FPI)...
June 15, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28648704/total-knee-arthroplasty-using-bicruciate-stabilized-or-posterior-stabilized-knee-implants-provided-comparable-outcomes-at-2-years-a-prospective-multicenter-randomized-controlled-clinical-trial-of-patient-outcomes
#3
Jennie M Scarvell, Diana M Perriman, Paul N Smith, David G Campbell, Warwick J M Bruce, Bo Nivbrant
BACKGROUND: The bicruciate-stabilized (BCS) knee arthroplasty was developed to replicate normal knee kinematics. We examined the hypothesis that patients with osteoarthritis requiring total knee arthroplasty (TKA) will have better functional outcome and satisfaction with the BCS implant compared with an established posterior cruciate-stabilized implant. METHODS: This multicenter, randomized, controlled trial compared the clinical outcomes of a BCS implant against an established posterior cruciate-stabilized implant with 2-year follow-up...
May 22, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28648702/a-dual-pivot-pattern-simulating-native-knee-kinematics-optimizes-functional-outcomes-after-total-knee-arthroplasty
#4
R Michael Meneghini, Evan R Deckard, Marshall K Ishmael, Mary Ziemba-Davis
BACKGROUND: Few studies on kinematics correlate patterns to functional outcomes after total knee arthroplasty (TKA). The purpose of this study was to determine if lateral pivot motion in early flexion and medial pivot in high flexion, simulating native knee kinematics, produces superior clinical outcomes. A second objective was to determine if specific kinematic patterns produce superior outcomes. METHODS: One hundred twenty consecutive TKAs were performed using sensor trials to record intraoperative knee kinematics...
May 4, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28647205/measurement-properties-of-visual-rating-of-postural-orientation-errors-of-the-lower-extremity-a-systematic-review-and-meta-analysis
#5
REVIEW
Jenny Nae, Mark W Creaby, Anna Cronström, Eva Ageberg
OBJECTIVES: To systematically review measurement properties of visual assessment and rating of Postural Orientation Errors (POEs) in participants with or without lower extremity musculoskeletal disorders. METHODS: A systematic review according to the PRISMA guidelines was conducted. The search was performed in Medline (Pubmed), CINAHL and EMBASE (OVID) databases until August 2016. Studies reporting measurement properties for visual rating of postural orientation during the performance of weight-bearing functional tasks were included...
April 18, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28646383/anterior-cruciate-ligament-graft-fixation-first-in-anterior-and-posterior-cruciate-ligament-reconstruction-best-restores-knee-kinematics
#6
Libin Zheng, Soheil Sabzevari, Brandon Marshall, Junjun Zhu, Monica A Linde, Patrick Smolinski, Freddie H Fu
PURPOSE: To evaluate the effect of different graft fixation sequences in one-stage anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) reconstruction on (1) knee biomechanics and (2) tibiofemoral alignment. METHODS: Twelve porcine knees were used in this study. Five fixation sequences were performed (angle indicating knee flexion): (a) PCL at 30° and ACL at 30°, (b) PCL at 90° and ACL at 30°, (c) ACL at 30° and PCL at 30°, (d) ACL at 30° and PCL at 90°, and (e) ACL and PCL simultaneous fixation at 30°...
June 23, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28644677/young-athletes-after-anterior-cruciate-ligament-reconstruction-with-single-leg-landing-asymmetries-at-the-time-of-return-to-sport-demonstrate-decreased-knee-function-2-years-later
#7
Matthew P Ithurburn, Mark V Paterno, Kevin R Ford, Timothy E Hewett, Laura C Schmitt
BACKGROUND: Previous work shows that young athletes after anterior cruciate ligament reconstruction (ACLR) demonstrate single-leg (SL) landing movement asymmetries at the time of return to sport (RTS); however, the effect of movement asymmetries on longitudinal knee-related function after ACLR has not been examined. Hypothesis/Purpose: The purpose of this study was to examine the effect of SL drop-landing movement symmetry at the time of RTS on knee-related function 2 years later in young athletes after ACLR...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28644193/heel-raised-foot-posture-do-not-affect-trunk-and-lower-extremity-biomechanics-during-a-barbell-back-squat-in-recreational-weightlifters
#8
Szu-Ping Lee, Carrie Gillis, Javier J Ibarra, Derek Oldroyd, Ryan Zane
It is claimed that weightlifting shoes with a raised heel may lead to a more upright trunk posture, and thus reduce the risk of back injuries during a barbell back squat. These proclaimed biomechanical effects have not been thoroughly investigated. The purpose of this study was to compare trunk and lower extremity biomechanics during barbell back squats in 3 foot postures.14 recreational weightlifters (7 male and 7 female) between the ages of 18-50 performed barbell back squats in 3 conditions (barefoot on a flat surface, barefoot on a heel-raised platform, and wearing heel-raised weightlifting shoes) at 80% of their 1-RM...
June 19, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28644188/surgical-techniques-for-total-knee-arthroplasty-measured-resection-gap-balancing-and-hybrid
#9
Neil P Sheth, Adeel Husain, Charles Lenwood Nelson
Total knee arthroplasty (TKA) is effective in managing end-stage degenerative joint disease. Achieving favorable clinical outcomes is predicated on proper implant alignment, sizing, and rotation as well as adequate soft-tissue balancing. Modern TKA implants are designed to address the fundamental needs of attaining stability in both flexion and extension and of optimizing patellar tracking. Measured resection and gap balancing are the two different techniques used to implant the TKA components used today. Both techniques have been validated as durable and successful, and each has unique advantages and disadvantages...
July 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/28642490/relationship-between-kellgren-lawrence-score-and-3d-kinematic-gait-analysis-of-patients-with-medial-knee-osteoarthritis-using-a-new-gait-system
#10
Xiaolong Zeng, Limin Ma, Zefeng Lin, Wenhan Huang, Zhiqiang Huang, Yu Zhang, Chuanbin Mao
Knee osteoarthritis (KOA) is reported to have characteristic kinematics during walking. However, the relationship between Kellgren-Lawrence (K/L) score and the 3D kinematic gait of patients with medial KOA remains unclear. Here, ninety-seven patients with medial KOA and thirty-eight asymptomatic participants were involved. Patients with medial KOA were divided into early, moderate, and severe KOA based on the K/L score. Through kinematic gait analysis, we found a relationship between K/L score and 3D kinematic gait for patients...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28642097/are-two-dimensional-measured-frontal-plane-angles-related-to-three-dimensional-measured-kinematic-profiles-during-running
#11
Bart Dingenen, Filip F Staes, Lieselot Santermans, Lien Steurs, Maarten Eerdekens, Jurre Geentjens, Koen H E Peers, Maarten Thysen, Kevin Deschamps
OBJECTIVES: To investigate the temporal relationship between two-dimensional measured frontal plane joint angles and three-dimensional measured kinematic profiles during the stance phase of running, and to assess the intra- and intertester reliability of the two-dimensional angles. DESIGN: Observational study. SETTING: Research laboratory. PARTICIPANTS: Fifteen injury-free elite athletes. MAIN OUTCOME MEASURES: Contralateral pelvic drop (CPD), femoral adduction (FA), hip adduction (HA) and knee valgus (KV) were measured at the deepest landing position during midstance with two-dimensional video analysis during running...
March 4, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28641160/effects-of-hip-joint-centre-mislocation-on-gait-kinematics-of-children-with-cerebral-palsy-calculated-using-patient-specific-direct-and-inverse-kinematic-models
#12
Hans Kainz, Christopher P Carty, Sheanna Maine, Henry P J Walsh, David G Lloyd, Luca Modenese
Joint kinematics can be calculated by Direct Kinematics (DK), which is used in most clinical gait laboratories, or Inverse Kinematics (IK), which is mainly used for musculoskeletal research. In both approaches, joint centre locations are required to compute joint angles. The hip joint centre (HJC) in DK models can be estimated using predictive or functional methods, while in IK models can be obtained by scaling generic models. The aim of the current study was to systematically investigate the impact of HJC location errors on lower limb joint kinematics of a clinical population using DK and IK approaches...
June 4, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28641058/acute-kinematics-changes-in-marathon-runners-using-different-footwear
#13
Tania Socorro Amorim Soares, Camila Fonseca de Oliveira, Federico Pizzuto, Rui Manuel Garganta, João Paulo Vila-Boas, Mario Casimiro da Anunciação Paiva
The effects of running with or without shoes on injury prevention have been extensively studied, and several investigations have assessed biomechanical differences between them. However, findings are not consensual and further insights on biomechanical load associated with differently shod or barefoot conditions may be needed. This study aimed to observe if habitually shod marathon runners show acute alterations when running barefoot or with minimalist shoes, and to determine whether the running kinematical adaptations of wearing minimalist shoes were similar to barefoot running...
June 22, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28639442/weightbearing-ankle-dorsiflexion-range-of-motion-and-sagittal-plane-kinematics-during-single-leg-drop-jump-landing-in-healthy-male-athletes
#14
Brittany Dowling, April L McPherson, James M Paci
BACKGROUND: Passive ankle dorsiflexion range of motion (DROM) measures have been identified as a risk factor for injury during landings. However, passive measurements might not be indicative of dynamic ankle movement, whereas a weightbearing ROM might be a better tool when evaluating movement. The purpose of this study was to investigate the relationship between weightbearing DROM and sagittal plane landing mechanics in a single leg drop jump task. METHODS: 73 male athletes (22...
June 21, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28632776/dynamic-knee-valgus-alignment-influences-impact-attenuation-in-the-lower-extremity-during-the-deceleration-phase-of-a-single-leg-landing
#15
Akihiro Tamura, Kiyokazu Akasaka, Takahiro Otsudo, Jyunya Shiozawa, Yuka Toda, Kaori Yamada
Dynamic knee valgus during landings is associated with an increased risk of non-contact anterior cruciate ligament (ACL) injury. In addition, the impact on the body during landings must be attenuated in the lower extremity joints. The purpose of this study was to investigate landing biomechanics during landing with dynamic knee valgus by measuring the vertical ground reaction force (vGRF) and angular impulses in the lower extremity during a single-leg landing. The study included 34 female college students, who performed the single-leg drop vertical jump...
2017: PloS One
https://www.readbyqxmd.com/read/28632061/the-effect-of-unilateral-arm-swing-motion-on-lower-extremity-running-mechanics-associated-with-injury-risk
#16
Cristine Agresta, Christian R Ward, W Geoffrey Wright, Carole A Tucker
Many field sports involve equipment that restricts one or both arms from moving while running. Arm swing during running has been examined from a biomechanical and physiologic perspective but not from an injury perspective. Moreover, only bilateral arm swing suppression has been studied with respect to running. The purpose of this study was to determine the influence of running with one arm restrained on lower extremity mechanics associated with running or sport-related injury. Fifteen healthy participants ran at a self-selected speed with typical arm swing, with one arm restrained and with both arms restrained...
February 28, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28632053/the-effect-of-a-secondary-cognitive-task-on-landing-mechanics-and-jump-performance
#17
Boyi Dai, Ross F Cook, Elizabeth A Meyer, Yvonne Sciascia, Taylour J Hinshaw, Chaoyi Wang, Qin Zhu
Anterior cruciate ligament (ACL) injuries commonly occur during jump-landing tasks when individuals' attention is simultaneously allocated to other objects and tasks. The purpose of the current study was to investigate the effect of allocation of attention imposed by a secondary cognitive task on landing mechanics and jump performance. Thirty-eight recreational athletes performed a jump-landing task in three conditions: no counting, counting backward by 1 s from a randomly given number, and counting backward by 7 s from a randomly given number...
February 28, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28632046/targeting-associated-mechanisms-of-anterior-cruciate-ligament-injury-in-female-community-level-athletes
#18
Jonathan M D Staynor, Joanna C Nicholas, Gillian Weir, Jacqueline A Alderson, Cyril J Donnelly
This study aims to determine if biomechanically informed injury prevention training can reduce associated factors of anterior cruciate ligament injury risk among a general female athletic population. Female community-level team sport athletes, split into intervention (n = 8) and comparison groups (n = 10), completed a sidestepping movement assessment prior to and following a 9-week training period, in which kinetic, kinematic and neuromuscular data were collected. The intervention group completed a biomechanically informed training protocol, consisting of plyometric, resistance and balance exercises, adjunct to normal training, for 15-20 min twice a week...
February 24, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28629941/does-patella-lowering-improve-crouch-gait-in-cerebral-palsy-comparative-retrospective-study
#19
Eric Desailly, Camille Thévenin-Lemoine, Nejib Khouri
BACKGROUND: Patellalowering aims to improve quadriceps function as a means of correcting crouch gait in patients with cerebral palsy (PC). Few studies have assessed the effects of patella lowering as a component of multilevel surgery. HYPOTHESIS: Including patella lowering into the components of multilevel surgery is beneficial in patients with crouch gait and patella alta. MATERIAL ET METHODS: In 12 lower limbs with patella alta (Caton-Deschamps index >1...
June 16, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28628348/relation-between-peak-knee-flexion-angle-and-knee-ankle-kinetics-in-single-leg-jump-landing-from-running-a-pilot-study-on-male-handball-players-to-prevent-acl-injury
#20
Mariam A Ameer, Qassim I Muaidi
OBJECTIVES: The relationship between knee kinematics and knee-ankle kinetics during the landing phase of single leg jumping has been widely studied to identify proper strategies for preventing non-contact ACL injury. However, there is a lack of study on knee-ankle kinetics at peak knee flexion angle during jumping from running. Hence, the purpose of this study is to establish the relationship between peak knee flexion angle, knee extension moment, ankle plantar flexion moment and ground reaction force in handball players in order to protect ACL from excessive stress during single leg jumping...
June 19, 2017: Physician and Sportsmedicine
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