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https://www.readbyqxmd.com/read/28645455/kinematic-chain-reactions-on-trunk-and-dynamic-postural-steadiness-in-subjects-with-recurrent-low-back-pain
#1
Paul S Sung, Michael J Maxwell
Although subjects with recurrent low back pain (LBP) demonstrate altered trunk control, the kinematic and kinetic responses of the trunk have not been carefully investigated. This study was conducted to compare the standing time, spine range of motion (ROM), and dynamic postural steadiness index (DPSI) based on visual condition between subjects with and without recurrent LBP during upright one leg standing. Sixty-three individuals participated in the study, including 34 control subjects and 29 subjects with recurrent LBP...
June 8, 2017: Journal of Biomechanics
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
#2
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/28640152/preseason-workload-volume-and-high-risk-periods-for-noncontact-injury-across-multiple-australian-football-league-seasons
#3
Marcus J Colby, Brian Dawson, Jarryd Heasman, Brent Rogalski, Michael Rosenberg, Leanne Lester, Peter Peeling
Colby, MJ, Dawson, B, Heasman, J, Rogalski, B, Rosenberg, M, Lester, L, and Peeling, P. Preseason workload volume and high-risk periods for noncontact injury across multiple Australian Football League seasons. J Strength Cond Res 31(7): 1821-1829, 2017-The purpose of this study was to assess the association between preseason workloads and noncontact injury risk in Australian football players. Individual player injury data were recorded over 4 full seasons (2012-15) from one professional club. Noncontact injury incidence (per 1,000 "on legs" field training and game hours) was compared across the preseason, precompetition, and in-season phases to determine relative noncontact injury risk...
July 2017: Journal of Strength and Conditioning Research
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
#4
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/28633788/fluoroscopic-and-gait-analyses-for-the-functional-performance-of%C3%A2-a%C3%A2-custom-made-total-talonavicular-replacement
#5
Claudio Belvedere, Matteo Cadossi, Antonio Mazzotti, Sandro Giannini, Alberto Leardini
The present study evaluated the restoration of joint function in a special clinical case: a professional rock climber who underwent an original total talonavicular replacement with a custom-made prosthesis after a complex articular fracture. Full body gait analysis and 3-dimensional joint kinematics using single-plane fluoroscopy were performed on the same day at the 30-month follow-up examination. Gait analysis was performed using stereophotogrammetric, dynamometric, electromyographic, and baropodometric systems...
July 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
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
#6
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/28632524/callosal-motor-impersistence-a-novel-disconnection-syndrome
#7
Hee Jin Kim, Dongyeop Kim, Da-Heen Won, Juhee Chin, Kwang Ho Lee, Sang Won Seo, Kenneth M Heilman, Duk L Na
Motor impersistence, an inability to sustain a certain position or movement, is a motor-intentional disorder, caused more often by right than left hemisphere lesions. Since the right hemisphere is dominant for mediating motor persistence, callosal lesions that disconnect the left hemisphere from the right may induce impersistence of the right upper and lower limbs. After an undiagnosed left callosal infarction, a 65-year-old right-handed man suddenly developed a transient loss of volitional movement of his left leg...
June 2017: Cognitive and Behavioral Neurology: Official Journal of the Society for Behavioral and Cognitive Neurology
https://www.readbyqxmd.com/read/28632055/muscle-activity-in-sprinting-a-review
#8
Róisín M Howard, Richard Conway, Andrew J Harrison
The use of electromyography (EMG) is widely recognised as a valuable tool for enhancing the understanding of performance drivers and potential injury risk in sprinting. The timings of muscle activations relative to running gait cycle phases and the technology used to obtain muscle activation data during sprinting are of particular interest to scientists and coaches. This review examined the main muscles being analysed by surface EMG (sEMG), their activations and timing, and the technologies used to gather sEMG during sprinting...
February 28, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28631272/a-unique-fatal-moose-attack-mimicking-homicide
#9
Petur Gudmannsson, Johan Berge, Henrik Druid, Göran Ericsson, Anders Eriksson
Fatalities caused by animal attacks are rare, but have the potential to mimic homicide. We present a case in which a moose attacked and killed a woman who was walking her dog in a forest. Autopsy showed widespread blunt trauma with a large laceration on one leg in which blades of grass were embedded. Flail chest was the cause of death. The case was initially conceived as homicide by means of a riding lawn mower. A review of the case by moose experts and analyses of biological trace material that proved to originate from moose, established the true source of injury...
June 20, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28630841/bipolar-hemiarthroplasty-in-a-patient-with-above-knee-amputation-surgical-technique
#10
Ramesh Perumal, Santhosh Ram Gaddam, J Vasudeva, J Dheenadhayalan, S Rajasekaran
INTRODUCTION: Femoral neck fractures are a common occurrence in lower limb amputees. Good post-operative results of hip hemiarthroplasty have been described in below-knee amputees. However, to our knowledge, very few such cases have been reported in above-knee amputees. CASE REPORT: We present a case of a 75-year-old male patient who underwent above-knee amputation of the right lower limb for severe crush injury right leg and a bipolar hemiarthroplasty for an ipsilateral fracture neck of femur sustained in the same road traffic accident...
January 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28630830/bilateral-humerus-and-right-femur-fracture-in-a-newborn-after-cesarean-section-for-breech-presentation-in-a-twin-pregnancy-a-very-rare-case-report
#11
P Rahul, Amit Rakesh Grover, S M Ajoy
INTRODUCTION: The most common fractures during vaginal delivery occur in the clavicle, humerus, and femur. Cesarean section reduces the chances of a child having a birth injury. However, in some difficult extractions, long bone fractures may occur. Cesarean section further reduces the incidence of birth injuries, especially in a breech delivery. Maneuvers employed during cesarean section, energetic traction, improper uterine incisions, and contracted uterus may cause these injuries. In the medical literature, there are few articles highlighting the occurrence of long bone fractures during cesarean section...
January 2017: Journal of Orthopaedic Case Reports
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
#12
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
https://www.readbyqxmd.com/read/28622786/dairy-cow-disability-weights
#13
Craig S McConnel, Ashleigh A McNeil, Joleen C Hadrich, Jason E Lombard, Franklyn B Garry, Jane Heller
Over the past 175 years, data related to human disease and death have progressed to a summary measure of population health, the Disability-Adjusted Life Year (DALY). As dairies have intensified there has been no equivalent measure of the impact of disease on the productive life and well-being of animals. The development of a disease-adjusted metric requires a consistent set of disability weights that reflect the relative severity of important diseases. The objective of this study was to use an international survey of dairy authorities to derive disability weights for primary disease categories recorded on dairies...
August 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28616638/piriformis-muscle-syndrome-with-assessment-of-sciatic-nerve-using-diffusion-tensor-imaging-and-tractography-a-case-report
#14
Keizo Wada, Tomohiro Goto, Tomoya Takasago, Daisuke Hamada, Koichi Sairyo
Piriformis muscle syndrome (PMS) is difficult to diagnose by objective evaluation of sciatic nerve injury. Here we report a case of PMS diagnosed by diffusion tensor imaging (DTI) and tractography of the sciatic nerve, which can assess and visualize the extent of nerve injury. The patient was a 53-year-old man with a 2-year history of continuous pain and numbness in the left leg. His symptoms worsened when sitting. Physical examination, including sensorimotor neurologic tests, the deep tendon reflex test, and the straight leg raise test, revealed no specific findings...
June 14, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28616222/a-case-report-of-an-unusual-cause-of-postoperative-leg-pain-after-posterior-lumbar-fusion
#15
R Daureeawoo, S Baliga, W Mohahmed, E B Ahmed
We report the case of a 36-year old man who underwent elective posterior lumbar spinal fusion after presenting with bilateral leg pain with associated back pain. He had undergone a L5/S1 discectomy in 2001, which provided good symptomatic relief. On this admission, he underwent elective L4-S1 posterolateral fusion and bilateral L4/5 and L5/S1 decompression. Intra-operatively a pedicle screw had to be re-inserted after fluoroscopy confirmed a lateral breech. The patient had no major postoperative complications until the sixth day when the patient re-presented with acute leg pain and weakness...
July 2017: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/28616021/mri-analysis-and-clinical-significance-of-lower-extremity-muscle-cross-sectional-area-after-spinal-cord-injury
#16
REVIEW
Robert M Lester, Kori Johnson, Refka E Khalil, Rehan Khan, Ashraf S Gorgey
Shortly after spinal cord injury (SCI), the musculoskeletal system undergoes detrimental changes in size and composition, predominantly below the level of injury. The loss of muscle size and strength, along with increased immobility, predisposes persons with SCI to rapid and severe loss in bone mineral density and other health related consequences. Previous studies have highlighted the significance of measuring thigh muscle cross-sectional area, however, measuring the size and composition of muscles of the lower leg may provide insights on how to decrease the risk of various comorbidities...
May 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28611857/chronic-achilles-tendon-rupture-reconstruction-using-the-lindholm-method-and-the-vulpius-method
#17
Firat Ozan, Fatih Dogar, Kaan Gurbuz, Yakup Ekinci, Semmi Koyuncu, Hazim Sekban
BACKGROUND: We investigated the clinical and functional outcomes of chronic Achilles tendon rupture reconstruction via the Lindholm technique and via the Vulpius' lengthening of the gastrocnemius. METHODS: We evaluated 15 patients with chronic Achilles tendon rupture (Lindholm technique in eight patients and primary repair with the Vulpius technique in seven patients). In the final follow-up, the Hooker scale was used to measure the ankle functional capacity in all patients...
July 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28608862/vascular-density-of-inferior-tibiofibular-joint-cadaveric-experimental-study
#18
Łukasz Warchoł, Izabela Mróz, Ewa Mizia, Jarosław Zawiliński, Paweł Depukat, Wojciech Kurzydło, Krzystof A Tomaszewski
The study was carried out on 50 human lower legs obtained during autopsies (KBET: 122.6120.315.2016). The anatomy of the joint was studied using classical anatomical description methods. Based also on literature we have reviewed the current knowledge on the inferior tibiofibular joint blood supply considering the important clinically aspect - vascular density. Authors of this paper postulate relatively low vascular density of the region described and potential worse condition for healing in case of injury or after surgical procedures performed...
2017: Folia Medica Cracoviensia
https://www.readbyqxmd.com/read/28607787/ipsilateral-rupture-of-quadriceps-tendon-with-distal-tibia-fracture-a-case-report-and-review-of-the-literature
#19
Samik Banerjee, Timothy P Dooley, James R Parkinson
Traumatic rupture of the quadriceps tendon by itself is not an uncommon clinical condition. However, its association with concurrent ipsilateral closed distal tibia oblique fracture is exceedingly rare with only one previously reported case in English literature. The dual diagnosis of this atypical combination of injury may be masked by pain and immobilization of the more obvious fracture and may be missed, unless the treating physician maintains a high index of suspicion. Suprapatellar knee pain with or without a palpable gap in the quadriceps tendon and inability to straight leg raise in the setting of a distal tibia fracture should raise concern, but if initial treatment employs a long-leg splint the knee symptoms may be muted...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/28605310/stroboscopic-vision-to-induce-sensory-reweighting-during-postural-control
#20
Kyung-Min Kim, Joo-Sung Kim, Dustin R Grooms
CONTEXT: Patients with somatosensory deficits have been found to rely more on visual feedback for postural control. However, current balance tests may be limited in identifying increased visual dependence (sensory reweighting to the visual system), as options are typically limited to eyes open or closed conditions with no progressions between. OBJECTIVE: To assess the capability of stroboscopic glasses to induce sensory reweighting of visual input during single-leg balance...
June 12, 2017: Journal of Sport Rehabilitation
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