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https://www.readbyqxmd.com/read/28428912/biomechanical-evaluation-of-carpal-kinematics-during-simulated-wrist-motion
#1
Helen Stoesser, Clare E Padmore, Masao Nishiwaki, Braden Gammon, G Daniel G Langohr, James A Johnson
Background Flexion and extension of the wrist is achieved primarily at the radiocarpal and midcarpal joints. Carpal kinematics have been investigated, although there remains no consensus regarding the relative contribution of each bone to wrist motion. Purpose To determine the kinematics of the scaphoid, lunate, and capitate during unconstrained simulated wrist flexion/extension and to examine the effect of motion direction on the contribution of each bone. Materials and Methods Seven cadaveric upper extremities were tested in a passive wrist simulator with 10N tone loads applied to the wrist flexors/extensors...
May 2017: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/28422876/low-complication-rate-of-elastic-stable-intramedullary-nailing-esin-of-pediatric-forearm-fractures-a-retrospective-study-of-202-cases
#2
Christiane Kruppa, Pamela Bunge, Thomas A Schildhauer, Marcel Dudda
Elastic stable intramedullary nailing (ESIN) has been established as state of the art treatment for forearm fractures in children, if operative stabilization is required. Their use has been expanded to single bone shaft fractures, and also more complex injuries such as Monteggia fractures or Monteggia-like lesions. A wide range of complications has been reported in the literature, up to 70% in certain investigations. The purpose of this study was to assess the complication rate after ESIN treatment of forearm fractures in children and adolescents in a representative cohort of patients from a level 1 trauma center in Germany...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28406879/physical-examination-of-the-knee-meniscus-cartilage-and-patellofemoral-conditions
#3
Robert D Bronstein, Joseph C Schaffer
The knee is one of the most commonly injured joints in the body. Its superficial anatomy enables diagnosis of the injury through a thorough history and physical examination. Examination techniques for the knee described decades ago are still useful, as are more recently developed tests. Proper use of these techniques requires understanding of the anatomy and biomechanical principles of the knee as well as the pathophysiology of the injuries, including tears to the menisci and extensor mechanism, patellofemoral conditions, and osteochondritis dissecans...
May 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/28400179/the-optimal-orthosis-and-motion-protocol-for-extensor-tendon-injury-in-zones-iv-viii-a-systematic-review
#4
Alison L Wong, Madeline Wilson, Sakina Girnary, Matthew Nojoomi, Soumyadipta Acharya, Scott M Paul
STUDY DESIGN: Systematic review INTRODUCTION: There exist numerous combinations of orthoses and motion protocols for the treatment of proximal extensor tendon injuries. PURPOSE: The purpose of this study was to determine the optimal combination of motion protocol and orthotic treatment for the rehabilitation of proximal extensor tendon injuries (zones IV-VIII). METHODS: A systematic review of English language randomized clinical trials and cohort studies investigating extensor tendon rehabilitation from 1960 to 2016 was conducted in MEDLINE, Embase, Cochrane, CINAHL, PEDro, and OTseeker...
April 8, 2017: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/28394713/elbow-mri-findings-do-not-correlate-with-future-placement-on-the-disabled-list-in-asymptomatic-professional-baseball-pitchers
#5
Nicholas M Gutierrez, Christopher Granville, Lee Kaplan, Michael Baraga, Jean Jose
BACKGROUND: Injury rates among professional baseball players may reach as high as 5.8 per 1000 encounters, with pitchers being most vulnerable on account of the excessive biomechanical load on the upper extremity during the throwing motion. Anatomically, the shoulder is the most common site of pitching-related injury, accounting for 30.7% of injuries, closely followed by the elbow at 26.3%. Characteristic valgus loading imparts a predictable constellation of stresses on the joint, including medial tension, lateral compression, and posterior medial shearing...
April 1, 2017: Sports Health
https://www.readbyqxmd.com/read/28388232/increasing-and-decreasing-pain-causes-acute-responses-of-strength-and-running-mechanics-in-patellofemoral-pain
#6
David M Bazett-Jones, Wendy Huddleston, Stephen Cobb, Kristian O'Connor, Jennifer E Earl-Boehm
CONTEXT:   Patellofemoral pain (PFP) is typically exacerbated by repetitive activities that load the patellofemoral joint, such as running. Understanding the mediating effects of changes in pain in individuals with PFP might inform injury progression, rehabilitation, or both. OBJECTIVE:   To investigate the effects of changing pain on muscular strength and running biomechanics in those with PFP. DESIGN:   Crossover study. SETTING:   University research laboratory...
April 7, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28378509/hamstring-to-quadriceps-fatigue-ratio-offers-new-and-different-muscle-function-information-than-the-conventional-non-fatigued-ratio
#7
Matheus Daros Pinto, Anthony J Blazevich, Lars L Andersen, Pedro Mil-Homens, Ronei Silveira Pinto
Commonly used injury risk prediction tests such as the hamstring-to-quadriceps (H:Q) strength ratio appear to be poor predictors of non-contact injury. However, these tests are typically performed in a non-fatigued state, despite accumulated fatigue being an important risk factor for both hamstring strain (HS) and anterior cruciate ligament (ACL) injuries in professional soccer players PURPOSE: To examine the influence of neuromuscular fatigue on the H:Q strength ratio and the association between fatigued and non-fatigued ratio scores, after the effect of different H:Q calculation methods were compared and contrasted METHODS: Thirty-five professional soccer players performed a 30-repetition isokinetic fatigue test protocol...
April 4, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28369286/a-2-year-follow-up-after-a-2-year-rct-with-vitamin-d-and-exercise-effects-on-falls-injurious-falls-and-physical-functioning-among-older-women
#8
Kirsti Uusi-Rasi, Radhika Patil, Saija Karinkanta, Pekka Kannus, Kari Tokola, Christel Lamberg-Allardt, Harri Sievänen
Background: Both exercise and vitamin D are recommended means to prevent falls among older adults, but their combined effects on fall-induced injuries are scarcely studied. Methods: A 2-year follow-up of a previous 2-year randomized controlled trial with vitamin D and exercise (Ex) of 409 older home-dwelling women using a factorial 2 × 2 design (D-Ex-, D+Ex-, D-Ex+, D+Ex+). Besides monthly fall diaries, femoral neck bone mineral density (fn-BMD), and physical functioning were assessed at 1 and 2 years after the intervention...
March 21, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28363294/the-use-of-dermal-skin-substitutes-for-the-treatment-of-the-burned-hand
#9
REVIEW
Ian C Sando, Kevin C Chung
The hand is commonly affected in burn injuries. Joints and extensor tendons are vulnerable given their superficial location. Durable coverage that permits relative frictionless tendon gliding and minimizes scar contracture is required to optimize functional outcomes. When soft tissue donor sites are limited, the use of dermal skin substitutes provides stable coverage with minimal scarring, good mobility, and acceptable appearance. A comprehensive review of dermal skin substitutes and their use with burn reconstruction of the hand is provided...
May 2017: Hand Clinics
https://www.readbyqxmd.com/read/28355741/-mri-of-the-finger-ligament-and-tendon-injuries-imaging-technique-and-clinical-application
#10
Y X Li, W Ye, R J Bai, H L Zhan, Y Liu, Z H Qian, H Zhang
Objective: To explore the MRI technique and the clinical application in ligament and tendons of fingers. Methods: The study was reviewed and approved by an institutional review board of hospital.A total of 20 normal volunteers and 50 patients from Beijing Jishuitan Hospital between May 2012 and May 2015 with finger injuries were chosen to undergo magnetic resonance examination by using Achieva 3.0 T MR produced by Philips.Scanning from coronal, sagittal and axial view in T(1)-weighted and proton fat saturation sequence (PD-FS), choosing suitable parameters, in order to get clear images of finger tendons and ligaments...
March 21, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28352603/analysis-of-pediatric-tendon-injuries-in-the-hand-in-comparison-with-adults
#11
Jin Sung Kim, Seung Je Sung, Young Joon Kim, Young Woong Choi
BACKGROUND: The purpose of this study was to identify the epidemiologic characteristics of hand tendon injuries in children and to compare these with those of adults. METHODS: This retrospective study was conducted on acute traumatic tendon injuries of the hand treated at our institution from 2005 to 2013, based on medical records and X-ray findings. Age, sex, hand injured, mechanism of injury, tendons and zones injured, number of affected digits, and comorbidities and complications were analyzed...
March 2017: Archives of Plastic Surgery
https://www.readbyqxmd.com/read/28350716/movement-strategies-among-groups-of-chronic-ankle-instability-coper-and-control
#12
S Jun Son, Hyunsoo Kim, Mattew K Seeley, J Ty Hopkins
INTRODUCTION: Comprehensive evaluation of movement strategies during functional movement is a difficult undertaking. Because of this challenge, studied movements have been over simplified. Furthermore, evaluating movement strategies at only a discrete time point(s) provide limited insight into how movement strategies may change or adapt in chronic ankle instability (CAI) patients. This study aimed to identify abnormal movement strategies in individuals with a history of ankle sprain injury during a sports maneuver compared to healthy controls...
March 27, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28347598/patellar-tendon-reconstruction-using-an-extended-gastrocnemius-flap-following-cryogenic-injury-to-the-knee
#13
Raymond H Kim, Amanda H Randolph, Conrad J Tirre, Matthew Morrey, Jason M Jennings
Cryogenic thermal necrosis after knee surgery is rare. We describe a patient who presented with an anterior knee soft tissue defect in conjunction with an extensor mechanism deficiency secondary to a cold thermal injury after an anterior cruciate ligament reconstruction. We treated the patient with a single stage surgical procedure combining patellar tendon reconstruction and soft tissue coverage utilizing the superficial portion of the patient's vascularized Achilles tendon attached to a medial gastrocnemius flap...
March 24, 2017: Knee
https://www.readbyqxmd.com/read/28344531/hand-and-wrist-injuries-in-elite-boxing-a-longitudinal-prospective-study-2005-2012-of-the-great-britain-olympic-boxing-squad
#14
Michael Loosemore, Joseph Lightfoot, Ian Gatt, Mike Hayton, Chris Beardsley
Background: The purpose of this investigation was to explore prospectively the nature and duration of hand and wrist injuries in training and competition in the Great Britain (GB) amateur boxing squad between 2005 and 2012. Methods: Longitudinal prospective injury surveillance of the GB boxing squad was performed from 2005 to 2012. The location, region affected, description, and the duration of each injury were recorded by the team doctor and team physiotherapist. We recorded whether the injury occurred during competition or training and also whether it was a new or a recurrent injury...
March 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28338524/chronic-boutonniere-deformities-supple-or-stiff-a-new-surgical-technique-with-early-mobilization-in-11-cases
#15
Elodie Dubois, Frederic Teboul, Thomas Bihel, Jean-N Goubier
Injuries to the central slip of the extensor mechanism can lead to a Boutonniere deformity with important functional consequences. We report a series of 11 patients treated by lengthening-dorsalizing the lateral bands and tightening the central slip with early mobilization. The average age of the patients was 42 years (14;52). The extension defect of the proximal interphalangeal (PIP) joint was 64 degrees (80;55) and the hyperextension of the distal interphalangeal joint was 10 degrees (15;5). The surgery was performed with peripheral nerve block (sensitive), allowing dynamic adjustment of the tendinous sutures...
March 23, 2017: Techniques in Hand & Upper Extremity Surgery
https://www.readbyqxmd.com/read/28338388/preferred-hip-strategy-during-landing-reduces-knee-abduction-moment-in-collegiate-female-soccer-players
#16
Anh-Dung Nguyen, Jeffrey B Taylor, Taylor G Wimbish, Jennifer L Keith, Kevin R Ford
CONTEXT: Hip focused interventions are aimed to decrease frontal plane knee loading related to anterior cruciate ligament (ACL) injuries. Whether a preferred hip landing strategy decreases frontal plane knee loading is unknown. OBJECTIVE: To determine if a preferred hip landing strategy during a drop vertical jump (DVJ) is utilized during a single leg landing (SLL) task and whether differences in frontal plane knee loading are consistent between a DVJ and a SLL task...
March 24, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28330449/a-cross-sectional-study-of-the-effects-of-load-carriage-on-running-characteristics-and-tibial-mechanical-stress-implications-for-stress-fracture-injuries-in-women
#17
Chun Xu, Amy Silder, Ju Zhang, Jaques Reifman, Ginu Unnikrishnan
BACKGROUND: Load carriage is associated with musculoskeletal injuries, such as stress fractures, during military basic combat training. By investigating the influence of load carriage during exercises on the kinematics and kinetics of the body and on the biomechanical responses of bones, such as the tibia, we can quantify the role of load carriage on bone health. METHODS: We conducted a cross-sectional study using an integrated musculoskeletal-finite-element model to analyze how the amount of load carriage in women affected the kinematics and kinetics of the body, as well as the tibial mechanical stress during running...
March 23, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28325429/stener-like-lesions-due-to-radial-collateral-ligament-rupture-in-the-metacarpophalangeal-joints-of-two-adjacent-fingers-a-case-report-and-review-of-literature
#18
A Toffoli, M Chammas
Rupture of the collateral ligaments in the metacarpophalangeal (MCP) joint of a finger is less common than in the thumb. Literature about these lesions is sparse but the number of chronic injuries reported underlies the number of cases overlooked by physicians at the first visit. A Stener-like lesion is characterized by interposition of the extensor hood or the sagittal band between the torn collateral ligament of the MCP joint of a finger and its insertion. It was originally described as interposition of the adductor aponeurosis of the thumb...
April 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28319872/intrathecal-baclofen-bolus-reduces-exaggerated-extensor-coactivation-during-pre-swing-and-early-swing-of-gait-after-acquired-brain-injury
#19
John W Chow, Stuart A Yablon, Dobrivoje S Stokic
OBJECTIVE: To characterize the concurrent activation of rectus femoris (RF) and medial gastrocnemius (MG) muscles (extensor coactivation) during gait in subjects with pronounced resting hypertonia after acquired brain injury (ABI) and examine changes after intrathecal baclofen (ITB) bolus injection. METHODS: Magnitude and duration of extensor coactivation during different phases of gait were assessed by recording gait kinematics and activity in bilateral RF and MG muscles in 18 controls and 18 ABI subjects before and at 2, 4, and 6h after a 50-μg ITB injection...
May 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28314214/gait-biomechanics-following-lower-extremity-trauma-amputation-vs-reconstruction
#20
Elizabeth Russell Esposito, Daniel J Stinner, John R Fergason, Jason M Wilken
BACKGROUND: Surgical advances have substantially improved outcomes for individuals sustaining traumatic lower extremity injury. Injuries once requiring lower limb amputation are now routinely managed with limb reconstruction surgery. However, comparisons of functional outcomes between the procedures are inconclusive. PURPOSE: To compare gait biomechanics after lower limb reconstruction and transtibial amputation. METHODS: Twenty-four individuals with unilateral lower limb reconstruction wearing a custom ankle-foot orthosis (Intrepid Dynamic Exoskeletal Orthosis), 24 with unilateral, transtibial amputation, and 24 able-bodied control subjects underwent gait analysis at a standardized Froude speed based on leg length...
February 21, 2017: Gait & Posture
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