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Glenohumeral AND strength

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https://www.readbyqxmd.com/read/30514628/shoulder-biomechanics-of-rc-repair-and-instability-a-systematic-review-of-cadaveric-methodology
#1
Patrick Williamson, Amin Mohamadi, Arun J Ramappa, Joseph P DeAngelis, Ara Nazarian
BACKGROUND: Numerous biomechanical studies have addressed normal shoulder function and the factors that affect it. While these investigations include a mix of in-vivo clinical reports, ex-vivo cadaveric studies, and computer-based simulations, each has its own strengths and limitations. A robust methodology is essential in cadaveric work but does not always come easily. Precise quantitative measurements are difficult in in-vivo studies, and simulation studies require validation steps...
November 14, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/30509515/the-reachable-3-d-workspace-volume-is-a-measure-of-payload-and-body-mass-index-a-quasi-static-kinetic-assessment
#2
Miguel Nobre Castro, John Rasmussen, Shaoping Bai, Michael Skipper Andersen
An experimental protocol with five tasks is proposed for a low-cost empirical assessment of the reachable 3-D workspace (RWS), including both close-to-torso and far-from-torso regions. Ten participants repeated the protocol for four distinct hand payloads. The RWS expressed as a point cloud and its non-convex alpha-shape were obtained for each case. Moreover, individual strength surrogates for glenohumeral flexion and abduction, and elbow flexion were collected using a dynamometer. The RWS volume was statistically modelled using payload, body-mass-index and the strength surrogates as predictors...
February 2019: Applied Ergonomics
https://www.readbyqxmd.com/read/30487753/isokinetic-characteristics-of-amateur-boxer-athletes
#3
Ioannis Tasiopoulos, Pantelis T Nikolaidis, Alexandra Tripolitsioti, Apostolos Stergioulas, Thomas Rosemann, Beat Knechtle
Aim: The kinetic chain of the punch of boxers is characterized by the contribution of the shoulder; however, the isokinetic muscle strength of shoulder's rotators muscles has not been well studied so far, especially with regards to performance. Therefore, the aim of the present study was (a) to profile the isokinetic muscle strength of rotators of the glenohumeral joint, bilateral (BL), unilateral (UL) and functional ratios in amateur boxers, and (b) to examine the variation of these muscle strength characteristics by performance level...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/30388669/musculoskeletal-predictors-of-non-contact-injury-in-cricketers-few-and-far-between-a-longitudinal-cohort-study
#4
Benita Olivier, Janine Gray
OBJECTIVE: To determine the musculoskeletal risk factors for injury amongst professional, domestic cricket players. DESIGN: Longitudinal cohort study. SETTING: Medical suites associated with the respective cricket franchises. PARTICIPANTS: Professional, domestic cricket players (n = 97). MAIN OUTCOME MEASURES: A pre-participatory musculoskeletal screening battery consisting of 21 tests including flexibility, neural tension, stability, strength, balance and pain provocation tests at the start of the cricket season...
November 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/30359870/effects-of-an-anteroposterior-mobilization-of-the-glenohumeral-joint-in-overhead-athletes-with-chronic-shoulder-pain-a-randomized-controlled-trial
#5
Lluch E, D Pecos-Martín, V Domenech-García, P Herrero, T Gallego-Izquierdo
BACKGROUND: Passive oscillatory mobilizations are often employed by physiotherapists to reduce shoulder pain and increase function. However, there is little data about the neurophysiological effects of these mobilizations. OBJECTIVES: To investigate the initial effects of an anteroposterior (AP) shoulder joint mobilization on measures of pain and function in overhead athletes with chronic shoulder pain. DESIGN: Double-blind, controlled, within-subject, repeated-measures design...
December 2018: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/30192247/preoperative-narcotic-use-and-inferior-outcomes-after-anatomic-total-shoulder-arthroplasty-a-clinical-and-radiographic-analysis
#6
Kirk M Thompson, Justin D Hallock, Richard A Smith, Tyler J Brolin, Frederick M Azar, Thomas W Throckmorton
INTRODUCTION: Our purpose was to determine whether the chronic use of preoperative narcotics adversely affected clinical and/or radiographic outcomes. METHODS: Seventy-three patients (79 shoulders) with primary total shoulder arthroplasty for osteoarthritis were evaluated clinically and radiographically at preoperative visits and postoperatively at a minimum follow-up of 2 years: 26 patients (28 shoulders) taking chronic narcotic pain medication for at least 3 months before surgery and 47 patients (51 shoulders) who were not taking narcotics preoperatively...
September 5, 2018: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/30176442/regional-activation-of-anterior-and-posterior-supraspinatus-differs-by-plane-of-elevation-hand-load-and-elevation-angle
#7
Alan C Cudlip, Clark R Dickerson
The supraspinatus is one of the muscles of the rotator cuff, and growing research on fibre type composition and mechanical advantages in specific postures suggest this muscle may have distinct anterior and posterior regions. Activation differences between these regions may identify important functional differences. This research quantified muscular activation of these regions throughout a range of motion with differing hand loads. Forty participants completed paced humeral elevations in 7 planes of elevation (0/15/30/40/60/75/90°) using 3 hand loads (unloaded arm/20%/40% maximal elevation strength)...
December 2018: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/30145130/concurrent-validity-of-handheld-dynamometer-measurements-for-scapular-protraction-strength
#8
Ricardo Marcos Liberatori Junior, Walter Ansanello Netto, Gabriela Ferreira Carvalho, Gisele Garcia Zanca, Salomão Chade Assan Zatiti, Stela Marcia Mattiello
BACKGROUND: Handheld dynamometers (HHD) provide quick and low-cost assessments of muscle strength and their use has been increasing in clinical practice. There is no available data related to the validity of HHD for this measurement. OBJECTIVE: To verify the concurrent validity of scapular protraction measurements using an HHD. METHODS: Individuals with traumatic anterior glenohumeral instability were allocated in Instability Group (n=20), healthy swimmers were allocated in Athletes Group (n=19) and healthy subjects were allocated in Sedentary Group (n=21)...
August 21, 2018: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/30090688/nonoperative-treatment-for-injuries-to-the-in-season-throwing-shoulder-a-current-concepts-review-with-clinical-commentary
#9
Michael A Stone, Omid Jalali, Ram K Alluri, Paul R Diaz, Reza Omid, Seth C Gamradt, James E Tibone, Erik N Mayer, Alexander Weber
Repetitive overhead throwing generates tremendous demands on the shoulder joint of the overhead athlete. Clinicians, therapists, and medical staff are charged with optimizing a throwing athlete's shoulder mobility and stability to maximize performance and prevent injury. Modifiable risk factors such as strength asymmetry, glenohumeral range of motion deficits, and scapulothoracic joint abnormalities contribute to the overhead athlete's predisposition to shoulder injury. Most shoulder injuries in the overhead thrower can be successfully treated nonoperatively to allow in-season return to sport...
April 2018: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/30074436/elite-male-field-hockey-players-have-symmetric-isokinetic-glenohumeral-strength-profiles-but-show-asymmetry-in-scapular-muscle-strength
#10
Fran Vanderstukken, Nick Jansen, Tom Mertens, Ann M Cools
Shoulders of elite field hockey players are loaded continuously during play. However, shoulder girdle muscle performance in this population has never been examined yet. This study aimed to compare isokinetic shoulder girdle performance in elite male field hockey players to matched controls, with respect to strength, endurance and muscle balance. The complete male national field hockey team of Belgium (n = 25) was included and matched to a gender- and age-matched control group of healthy participants (n = 25)...
August 3, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30027078/bankart-lesion-repair-biomechanical-and-anatomical-analysis-of-mason-allen-and-simple-sutures-in-a-swine-model
#11
Ricardo Barreto Monteiro Dos Santos, Cleber Maciel de Morais Prazeres, Ricardo Mertens Fittipaldi, João Monteiro Neto, Tiago Cerqueira Lima Nogueira, Saulo Monteiro Dos Santos
Objective: To evaluate the labral height and pullout resistance after the repair of Bankart lesions in the glenohumeral joint of swine models, using double-loaded anchors with two suture configurations: simple and Mason-Allen. Methods: Ten swine shoulders were used, in which Bankart lesions were created. For each specimen, the lesion was sutured randomly with Mason-Allen sutures or simple sutures. The labral height was measured before the lesion was created and after the labral repair...
July 2018: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/30025379/scapular-muscles-weakness-in-subjects-with-traumatic-anterior-glenohumeral-instability
#12
Walter Ansanello Netto, Gisele Garcia Zanca, Michele Forgiarini Saccol, Salomão Chade Assan Zatiti, Stela Márcia Mattiello
OBJECTIVE: To investigate possible alterations on scapular muscle strength in subjects with traumatic anterior glenohumeral instability. DESIGN: Cross-sectional study. SETTING: Laboratory setting. PARTICIPANTS: Fifty-two subjects of both sexes: 26 healthy and 26 with traumatic anterior glenohumeral instability. MAIN OUTCOME MEASURES: Subjects performed maximal isometric and concentric isokinetic contractions of shoulder protraction and retraction in scapular and sagittal planes, at slow (12...
September 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29961233/surgical-strategy-in-extensive-proximal-brachial-plexus-palsies
#13
M Le Hanneur, T Lafosse, A Cambon-Binder, Z Belkheyar
PURPOSE: To describe and assess an overall surgical strategy addressing extensive proximal brachial plexus injuries (BPI). METHODS: Forty-five consecutive patients' charts with C5-C6-C7 and C5-C6-C7-C8 BPI were reviewed. Primary procedures were nerve transfers to restore elbow function and grafts to restore shoulder function when a cervical root was available; when nerve surgery was not possible or had failed, tendon transfers were conducted at the elbow while addressing shoulder function with glenohumeral arthrodesis or humeral osteotomy...
June 30, 2018: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/29786625/differences-in-glenohumeral-joint-rotation-and-peak-power-output-between-super-league-and-championship-rugby-league-players
#14
Matthew R Haines
Haines, MR. Differences in glenohumeral joint rotation and peak power output between Super League and Championship Rugby League players. J Strength Cond Res 32(6): 1685-1691, 2018-Rugby league is a high-intensity sport with large impact forces sustained during play, resulting in high prevalence of shoulder injury. Consequently, shoulder strength and player power are important considerations for injury prevention and performance. Additionally, professional teams regularly compete against semiprofessional teams, where differences in physical conditioning could be marked...
June 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29624450/national-athletic-trainers-association-position-statement-evaluation-management-and-outcomes-of-and-return-to-play-criteria-for-overhead-athletes-with-superior-labral-anterior-posterior-injuries
#15
Lori A Michener, Jeffrey S Abrams, Kellie C Huxel Bliven, Sue Falsone, Kevin G Laudner, Edward G McFarland, James E Tibone, Charles A Thigpen, Timothy L Uhl
OBJECTIVE:   To present recommendations for the diagnosis, management, outcomes, and return to play of athletes with superior labral anterior-posterior (SLAP) injuries. BACKGROUND:   In overhead athletes, SLAP tears are common as either acute or chronic injuries. The clinical guidelines presented here were developed based on a systematic review of the current evidence and the consensus of the writing panel. Clinicians can use these guidelines to inform decision making regarding the diagnosis, acute and long-term conservative and surgical treatment, and expected outcomes of and return-to-play guidelines for athletes with SLAP injuries...
March 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29557687/passive-accessory-joint-mobilization-in-the-multimodal-management-of-chronic-dysesthesia-following-thalamic-stroke
#16
Kristina Griffin, Michael O'Hearn, Carla C Franck, Carol A Courtney
STUDY DESIGN: Case Report. PURPOSE: Stroke is the most common cause of long-term disability. Dysesthesia, an unpleasant sensory disturbance, is common following thalamic stroke and evidence-based interventions for this impairment are limited. The purpose of this case report was to describe a decrease in dysesthesia following manual therapy intervention in a patient with history of right lacunar thalamic stroke. CASE DESCRIPTION: A 66-year-old female presented with tingling and dysesthesia in left hemisensory distribution including left trunk and upper/lower extremities, limiting function...
March 20, 2018: Disability and Rehabilitation
https://www.readbyqxmd.com/read/29524909/shoulder-range-of-motion-and-strength-in-young-competitive-tennis-players-with-and-without-history-of-shoulder-problems
#17
Benoît Gillet, Mickaël Begon, Marine Diger, Christian Berger-Vachon, Isabelle Rogowski
OBJECTIVE: To assess the effect of a history of shoulder problems on the shoulder flexibility and strength in young competitive tennis players. DESIGN: Cross-sectional study. PARTICIPANTS: Ninety-one competitive and asymptomatic tennis players aged between 8 and 15 years old were divided into two groups according to the presence or absence of a history of shoulder problems. OUTCOME MEASURES: Glenohumeral joint ranges of motion and the strength of eight shoulder muscles were bilaterally assessed...
May 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29502706/editorial-commentary-reviewing-the-science-of-our-unscientific-criteria-for-return-to-sports-after-shoulder-stabilization
#18
EDITORIAL
Riley J Williams
In contrast to anterior cruciate ligament reconstruction, there is a paucity of primary studies that address the issue of return to play after anterior shoulder stabilization for glenohumeral instability. Most studies focused on clinical outcomes after anterior shoulder stabilization provide little detail on the authors' assessment protocols used in determining return to sport readiness. In fact, many issues germane to the postoperative rehabilitation process (biologic healing, motion recovery, strength recovery, and sport-specific considerations) remain poorly defined, and are not typically addressed using validated shoulder outcomes instruments...
March 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29484857/biomechanical-analysis-of-a-novel-intercalary-prosthesis-for-humeral-diaphyseal-segmental-defect-reconstruction
#19
Li-Ming Zhao, Dong-Mu Tian, Yue Wei, Jun-Hui Zhang, Zheng-Lin Di, Zhi-Yong He, Yong-Cheng Hu
OBJECTIVE: To study the biomechanical properties of a novel modular intercalary prosthesis for humeral diaphyseal segmental defect reconstruction, to establish valid finite element humerus and prosthesis models, and to analyze the biomechanical differences in modular intercalary prostheses with or without plate fixation. METHODS: Three groups were set up to compare the performance of the prosthesis: intact humerus, humerus-prosthesis and humerus-prosthesis-plate...
February 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29484249/the-utilization-of-mulligan-concept-thoracic-sustained-natural-apophyseal-glides-on-patients-classified-with-secondary-impingement-syndrome-a-multi-site-case-series
#20
Dawn P Andrews, Kari B Odland-Wolf, James May, Russell Baker, Alan Nasypany
Background and Purpose: Secondary impingement syndrome (SIS) is a common complaint in the sporting population particularly among athletes engaging in overhead activities. While symptoms may be present at the shoulder with patients complaining of SIS, spinal alignment or dysfunction can influence scapular positioning and overall shoulder girdle function. As an adjunct therapy to traditional interventions for SIS, thoracic high-velocity low-amplitude (HVLA) thrusts have been utilized and correlated with patient reported decreases in pain...
February 2018: International Journal of Sports Physical Therapy
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