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https://www.readbyqxmd.com/read/29145990/the-role-of-superior-capsule-reconstruction-in-rotator-cuff-tears
#1
REVIEW
Paul Sethi, Wm Grant Franco
Massive, irreparable rotator cuff disease is a challenging problem to treat, especially in the younger active patient. This condition allows the deltoid to generate anterosuperior translation and shoulder dysfunction. Ideally, this dysfunction may be improved with rotator cuff repair. However, in the setting of irreparable rotator cuff disease, normal function is challenging to restore. Superior capsule reconstruction theoretically improves function by recentering the humeral head and improving glenohumeral kinematics...
January 2018: Orthopedic Clinics of North America
https://www.readbyqxmd.com/read/29140190/evaluation-of-a-shoulder-injury-prevention-program-in-wheelchair-basketball
#2
Jereme Wilroy, Elizabeth Hibberd
CONTEXT: Previous literature has theorized that alterations in shoulder physical characteristics are present in wheelchair athletes and contribute to shoulder pain and injury. Limited empirical evidence is present that evaluates the effectiveness of a shoulder injury prevention program focusing on improving these altered characteristics. OBJECTIVE: To evaluate the effectiveness of a 6-week intervention program at improving characteristics that increases the risk of developing pain or shoulder injury...
November 15, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29135783/beyond-the-bottom-of-the-foot-topographic-organization-of-the-foot-dorsum-in-walking
#3
Taryn Klarner, Gregory E P Pearcey, Yao Sun, Trevor S Barss, Chelsea Kaupp, Bridget Munro, Nick Frank, E Paul Zehr
INTRODUCTION: Sensory feedback from the foot dorsum during walking has only been studied globally by whole nerve stimulation. Stimulating the main nerve innervating the dorsal surface produces a functional stumble corrective response that is phase-dependently modulated. We speculated that effects evoked by activation of discrete skin regions on the foot dorsum would be topographically organized, as with the foot sole. METHODS: Nonnoxious electrical stimulation was delivered to five discrete locations on the dorsal surface of the foot during treadmill walking...
December 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29122192/physiological-consequences-of-using-an-upper-limb-exoskeleton-during-manual-handling-tasks
#4
Jean Theurel, Kevin Desbrosses, Terence Roux, Adriana Savescu
This study aimed to assess the physiological consequences of using an upper limb exoskeleton during manual handling task, as muscle activity, upper limb kinematics, postural balance and cardiac cost. Participants performed three tasks (load lifting (LIFT), carrying (WALK) and stacking-unstacking (STACK)) with (EXOS) and without (FREE) an exoskeleton. During LIFT and STACK, the activity of the deltoid anterior muscle was significantly lower for EXOS than for FREE. During LIFT, the activity of the triceps brachii (TB) and tibialis anterior muscles significantly increased for EXO...
February 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29121490/inter-joint-coordination-changes-during-and-after-muscle-fatigue
#5
Jeffrey C Cowley, Deanna H Gates
People produce multi-joint movements by organizing many degrees of freedom into a few major covarying relationships, indicating a high level of inter-joint coordination. These relationships can be identified using data decomposition analyses (e.g. principal components analysis, non-negative matrix factorization). The purpose of this study was to determine how movement coordination changes during muscle fatigue by analyzing the covariance structure of multi-joint movements. Sixteen (16) healthy adults completed a continuous, timed ratcheting task with the right arm for three 1-min intervals before, during, and after an intermittent shoulder fatigue protocol...
November 6, 2017: Human Movement Science
https://www.readbyqxmd.com/read/29117846/lunotriquetral-ligament-reconstruction-utilizing-a-palmaris-longus-autograft
#6
Carl M Harper, Matthew L Iorio
Injury to the lunotriquetral ligament can result in midcarpal instability, with resultant alterations in normal wrist kinematics and subsequent arthrosis. We performed a previously undescribed technique of lunotriquetral ligament reconstruction in two patients utilizing a palmaris longus tendon autograft. Average age at presentation was 24 years old with a mean follow up of 10 months. Average range of motion was 62.5° of flexion and 57.5° of extension. Total arc of motion was 83% of the contralateral uninvolved extremity...
December 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/29103062/intrapersonal-and-interpersonal-evaluation-of-upper-extremity-kinematics
#7
Artūras Linkel, Inga Raudonytė, James Shippen, Barbara May, Kristina Daunoravičienė, Aleksander Sawicki, Julius Griškevičius
BACKGROUND: The quality of upper extremity (UE) function can be evaluated by measuring the kinematic parameters of patient movements. OBJECTIVE: This investigation focused on finding the angles and angular velocity amplitudes of UE motions in healthy participants to compare with the experimental results of patients with a UE disability who are trying to recover previous movement conditions. METHODS: The UE motions of 23 healthy adult volunteers were tested using a three-dimensional motion capture system and measuring hand segment motions...
October 23, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/29091536/scapular-kinematics-by-sex-across-elevation-planes
#8
Bryan R Picco, Meghan E Vidt, Clark R Dickerson
Scapular kinematics are important indicators of dyskinesis, often suggesting underlying shoulder pathology, but the influence of sex is unknown. This study's objective was to examine scapular kinematics in healthy males and females. Positions of surface-mounted reflective markers were tracked during arm elevation movements in 0°/30°/40°/60°/90°/120° planes. Scapulothoracic rotations (protraction/retraction, medial/lateral rotation, posterior/anterior tilt) were calculated. ANOVA analysis evaluated main and interaction effects of sex, plane, phase, elevation angle...
November 1, 2017: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/29090988/youth-baseball-pitching-mechanics-a-systematic-review
#9
Samuel F Thompson, Trent M Guess, Andreas C Plackis, Seth L Sherman, Aaron D Gray
CONTEXT: Pitching injuries in youth baseball are increasing in incidence. Poor pitching mechanics in young throwers have not been sufficiently evaluated due to the lack of a basic biomechanical understanding of the "normal" youth pitching motion. OBJECTIVE: To provide a greater understanding of the kinetics and kinematics of the youth baseball pitching motion. DATA SOURCES: PubMed, MEDLINE, and SPORTDiscus databases were searched from database inception through February 2017...
November 1, 2017: Sports Health
https://www.readbyqxmd.com/read/29082227/muscle-synergies-based-characterization-and-clustering-of-poststroke-patients-in-reaching-movements
#10
Alessandro Scano, Andrea Chiavenna, Matteo Malosio, Lorenzo Molinari Tosatti, Franco Molteni
BACKGROUND: A deep characterization of neurological patients is a crucial step for a detailed knowledge of the pathology and maximal exploitation and customization of the rehabilitation therapy. The muscle synergies analysis was designed to investigate how muscles coactivate and how their eliciting commands change in time during movement production. Few studies investigated the value of muscle synergies for the characterization of neurological patients before rehabilitation therapies...
2017: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/29075834/sequence-specific-implicit-motor-learning-using-whole-arm-three-dimensional-reach-movements
#11
Jessica Baird, Jill Campbell Stewart
Implicit motor learning is essential to the acquisition of motor skills. Examination of implicit motor learning, however, has largely involved single-finger button presses or two-dimensional movements of a computer mouse or joystick. The purpose of this study was to examine sequence-specific implicit motor learning during practice of  a three-dimensional (3D) whole-arm reach task. Fifteen young, non-disabled individuals completed two consecutive days of practice of a 3D target task presented in a virtual environment with the dominant, right arm...
October 26, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29064724/the-effects-of-tackle-height-on-inertial-loading-of-the-head-and-neck-in-rugby-union-a-multibody-model-analysis
#12
Gregory J Tierney, Ciaran K Simms
OBJECTIVE: There is evidence of chronic injury to the head-and-neck region of Rugby Union players. The aim of this study was to use multibody simulations to examine the effects of tackle height on both Tackler and Ball Carrier head kinematics and neck dynamics. RESEARCH DESIGN: Quantitative Exploratory Study Methods and procedures: 45 front-on shoulder tackles with no direct contact to the head/neck were simulated with the MADYMO pedestrian model and used to assess differences between upper body tackles and lower body tackles...
October 24, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/29053545/three-dimensional-deformities-of-nonoperative-midshaft-clavicle-fractures-a-surface-matching-analysis
#13
Satoshi Oki, Noboru Matsumura, Yoshimori Kiriyama, Takuji Iwamoto, Kazuki Sato, Takeo Nagura
OBJECTIVE: The purpose of this study was to describe the 3-dimensional deformities of midshaft clavicle fractures, which had been treated nonoperatively, using computed tomography (CT) surface matching. METHODS: Twenty-one patients with unilateral midshaft clavicle fracture, who had been treated nonoperatively, were enrolled and evaluated retrospectively. The 3-dimensional deformity of the fractured clavicle was evaluated by CT surface matching. CT scans of 21 age- and sex-matched patients with initial traumatic shoulder dislocation or proximal humeral fracture were enrolled as a control group, and the differences in 3-dimensional deformities and lengths of the clavicles between the fracture group and the control group were evaluated...
November 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/29039871/superior-capsular-reconstruction
#14
Robert U Hartzler, Stephen S Burkhart
Superior capsular reconstruction (SCR) of the shoulder has recently gained popularity as an option for joint-preserving shoulder surgery for patients with an irreparable rotator cuff tear. In the absence of glenohumeral arthritis, rotator cuff tear irreparability should only be diagnosed for most patients after a careful diagnostic arthroscopy. Superior capsular reconstruction adds biological, passive, superior constraint to the glenohumeral joint, thereby optimizing the rotator cuff force couples and improving joint kinematics...
October 1, 2017: Orthopedics
https://www.readbyqxmd.com/read/29029633/pattern-of-improvement-in-upper-limb-pointing-task-kinematics-after-a-3-month-training-program-with-robotic-assistance-in-stroke
#15
Ophélie Pila, Christophe Duret, François-Xavier Laborne, Jean-Michel Gracies, Nicolas Bayle, Emilie Hutin
BACKGROUND: When exploring changes in upper limb kinematics and motor impairment associated with motor recovery in subacute post stroke during intensive therapies involving robot-assisted training, it is not known whether trained joints improve before non-trained joints and whether target reaching capacity improves before movement accuracy. METHODS: Twenty-two subacute stroke patients (mean delay post-stroke at program onset 63 ± 29 days, M2) underwent 50 ± 17 (mean ± SD) 45-min sessions of robot-assisted (InMotion™) shoulder/elbow training over 3 months, in addition to conventional occupational therapy...
October 13, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29028425/movement-variability-increases-with-shoulder-pain-when-compensatory-strategies-of-the-upper-body-are-constrained
#16
Juan López-Pascual, Álvaro Page, Pilar Serra-Añó
This cross-sectional study analyzed the influence of chronic shoulder pain (CSP) on movement variability/kinematics during humeral elevation, with the trunk and elbow motions constrained to avoid compensatory strategies. For this purpose, 37 volunteers with CSP as the injured group (IG) and 58 participants with asymptomatic shoulders as the control group (CG) participated in the study. Maximum humeral elevation (Emax), maximum angular velocity (Velmax), variability of the maximum angle (CVEmax), functional variability (Func_var), and approximate entropy (ApEn) were calculated from the kinematic data...
October 13, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/29024601/a-biomechanical-analysis-of-the-association-between-forearm-mechanics-and-the-elbow-varus-moment-in-collegiate-baseball-pitchers
#17
Matthew J Solomito, Erin J Garibay, Carl W Nissen
BACKGROUND: The incidence of upper extremity injury in baseball pitchers has increased over the past decade. This has resulted in a large body of research mainly focused on the kinematic and kinetic patterns of the elbow and shoulder to elucidate the cause of these injuries, with little attention on studying the associations of forearm rotation and upper arm joint moments. HYPOTHESIS: There will be significant differences in forearm kinematics and kinetics when comparing the fastball pitch with the curveball pitch...
October 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29023639/an-anatomical-and-mechanical-analysis-of-the-douc-monkey-genus-pygathrix-and-its-role-in-understanding-the-evolution-of-brachiation
#18
C D Byron, M C Granatosky, H H Covert
OBJECTIVES: Pygathrix is an understudied Asian colobine unusual among the Old World monkeys for its use of arm-swinging. Little data exists on the anatomy and mechanics of brachiation in this genus. Here, we consider this colobine to gain insight into the parallel evolution of suspensory behavior in primates. MATERIALS AND METHODS: This study compares axial and appendicular morphological variables of Pygathrix with other Asian colobines. Additionally, to assess the functional consequences of Pygathrix limb anatomy, kinematic and kinetic data during arm-swinging are included to compare the douc monkey to other suspensory primates (Ateles and Hylobates)...
October 11, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28987872/gender-difference-of-shoulder-pelvic-kinematic-integration-for-trunk-rotation-directions-in-healthy-older-adults
#19
Paul S Sung, Pamela Danial
BACKGROUND: The trunk coordination pattern has been extensively studied, and there is a higher pain prevalence and asymmetry in female older adults. However, there is a lack of investigation of different directions of trunk rotation and asymmetrical compensatory strategies of motor control between genders. The purpose of this study was to investigate shoulder and pelvic ranges of motion (ROM) as well as relative phases (RP) for the different directions of trunk rotation between genders in healthy older adults...
September 28, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28987866/kinematic-patterns-in-normal-and-degenerative-shoulders-part-ii-review-of-3-d-scapular-kinematic-patterns-in-patients-with-shoulder-pain-and-clinical-implications
#20
REVIEW
Marie-Martine Lefèvre-Colau, Christelle Nguyen, Clemence Palazzo, Frederic Srour, Guillaume Paris, Valerie Vuillemin, Serge Poiraudeau, Agnes Roby-Brami, Alexandra Roren
BACKGROUND: The global range of motion of the arm is the result of a coordinated motion of the shoulder complex including glenohumeral (GH), scapulothoracic, sternoclavicular and acromioclavicular joints. METHODS: This study is a non-systematic review of kinematic patterns in degenerated shoulders. It is a based on our own research on the kinematics of the shoulder complex and clinical experience. RESULTS: For patients with subacromial impingement syndrome without rotator-cuff tears, most kinematic studies showed a small superior humeral translation relative to the glenoid and decreased scapular lateral rotation and posterior tilt...
October 5, 2017: Annals of Physical and Rehabilitation Medicine
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