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Glenohumeral joint

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https://www.readbyqxmd.com/read/29661113/histology-vascularity-and-innervation-of-the-glenoid-labrum
#1
Abduelmenem Alashkham, Abdulrahman Alraddadi, Paul Felts, Roger Soames
BACKGROUND: Although the glenoid labrum has an important role in shoulder stability, little is known about its composition, vascularity and innervation. The aims of this study were therefore to evaluate the histology, vascularity and innervation of the glenoid labrum. MATERIALS AND METHODS: Ten glenoid labrum specimens (three male, two female: mean age 81.2 years, range 76-90 years) were detached at the glenoid neck. Following decalcification, sections were cut through the whole thickness of each specimen perpendicular to the glenoid labrum at 12 radii corresponding to a clock face superimposed on the glenoid fossa...
May 2018: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29659379/bony-reconstruction-of-the-anterior-glenoid-rim
#2
Laurent B Willemot, Bassem T Elhassan, Olivier Verborgt
Recurrent anterior shoulder instability is associated with glenohumeral bone loss. Glenoid deficiency compromises the concavity-compression mechanism. Medial Hill-Sachs lesions can result in an off-track humeral position. Anterior glenoid reconstruction or augmentation prevents recurrence by addressing the pathomechanics. In Bristow and Latarjet procedures, the coracoid process is harvested for conjoint tendon transfer, capsular reinforcement, and glenoid rim restoration. Complications and the nonanatomic nature of the procedure have spurred research on graft sources...
April 13, 2018: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/29659313/shoulder-external-rotation-range-of-motion-and-pectoralis-minor-length-in-individuals-with-and-without-shoulder-pain
#3
Dayana P Rosa, Rodrigo V Santos, Vander Gava, John D Borstad, Paula R Camargo
BACKGROUND: There is evidence that pectoralis minor (PM) length influences scapula position and that scapula position relates to glenohumeral joint (GHJ) external rotation (ER) range of motion (ROM). OBJECTIVES: To explore the association between PM resting length and GHJ ER ROM in individuals with and without shoulder pain. The influence of GHJ ER ROM measurement position on this association was also evaluated. DESIGN: Cross-Sectional. METHODS: Fifty individuals (25 asymptomatic and 25 with shoulder pain) participated...
April 16, 2018: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/29653438/the-effect-of-a-cricket-fielding-session-on-glenohumeral-range-of-motion-and-active-joint-position-sense
#4
Liam Newton, Steve McCaig
OBJECTIVE: To assess the effects of a cricket fielding session, at an identified throwing injury risk workload, on shoulder joint position sense (JPS) and active range of motion (AROM) in cricketers. DESIGN: Repeated measures observational study. SETTING: Indoor cricket centre. PARTICIPANTS: Nineteen, asymptomatic University cricketers. MAIN OUTCOME: AROM was assessed supine at 90° abduction and from this 10% off end range IR and ER was used as the position matching angle to assess JPS...
April 4, 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29651902/shoulder-and-lower-back-joint-reaction-forces-in-seated-double-poling
#5
Marie Lund Ohlsson, Jonas Danvind, L Joakim Holmberg
Overuse injuries in the shoulders and lower back are hypothesized to be common in cross-country sit-skiing. Athletes with reduced trunk muscle control mainly sits with their knees higher than hips (KH). To reduce spinal flexion, a position with the knees below the hips (KL) was enabled for these athletes using a frontal trunk support. The aim of the study was to compare the shoulder joint (glenohumeral joint) and L4-L5 joint reactions between the sitting positions KL and KH. Five able-bodied female athletes performed submaximal and maximal exercise tests in the sitting positions KL and KH on a ski-ergometer...
April 13, 2018: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/29629805/comparison-between-image-guided-and-landmark-based-glenohumeral-joint-injections-for-the-treatment-of-adhesive-capsulitis-a-cost-effectiveness-study
#6
Soterios Gyftopoulos, Valentino Abballe, Mandeep S Virk, James Koo, Heather T Gold, Naveen Subhas
OBJECTIVE: The purpose of this study was to determine the cost-effectiveness of landmark-based and image-guided intraarticular steroid injections for the initial treatment of a population with adhesive capsulitis. MATERIALS AND METHODS: A decision analytic model from the health care system perspective over a 6-month time frame for 50-year-old patients with clinical findings consistent with adhesive capsulitis was used to evaluate the incremental cost-effectiveness of three techniques for administering intraarticular steroid to the glenohumeral joint: landmark based (also called blind), ultrasound guided, and fluoroscopy guided...
April 9, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29629579/anatomical-total-shoulder-arthroplasty-in-young-patients-with-osteoarthritis
#7
M O Gauci, N Bonnevialle, G Moineau, M Baba, G Walch, P Boileau
Aims Controversy about the use of an anatomical total shoulder arthroplasty (aTSA) in young arthritic patients relates to which is the ideal form of fixation for the glenoid component: cemented or cementless. This study aimed to evaluate implant survival of aTSA when used in patients aged < 60 years with primary glenohumeral osteoarthritis (OA), and to compare the survival of cemented all-polyethylene and cementless metal-backed glenoid components. Materials and Methods A total of 69 consecutive aTSAs were performed in 67 patients aged < 60 years with primary glenohumeral OA...
April 1, 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29628689/going-forward-with-reverse-shoulder-arthroplasty
#8
REVIEW
Keshav Singhal, Rammohan R
Rotator cuff is a vital structure of glenohumeral joint, the dysfunction of which leads to debilitating pain and restricted movement. Arthroplasty using unconstrained anatomical prosthesis for treating these conditions have not been successful in the past. Reverse Shoulder Arthroplasty (RSA) is a novel technique specifically designed to address end stage glenohumeral arthritis in rotator cuff deficient joint. Short and mid-term studies have demonstrated a significant improvement in pain and range of motion of the shoulder joint...
January 2018: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/29589497/risk-factors-for-recurrent-instability-or-revision-surgery-following-arthroscopic-bankart-repair
#9
S A Mahure, B Mollon, B M Capogna, J D Zuckerman, Y W Kwon, A S Rokito
Aims The factors that predispose to recurrent instability and revision stabilization procedures after arthroscopic Bankart repair for anterior glenohumeral instability remain unclear. We sought to determine the rate and risk factors associated with ongoing instability in patients undergoing arthroscopic Bankart repair for instability of the shoulder. Materials and Methods We used the Statewide Planning and Research Cooperative System (SPARCS) database to identify patients with a diagnosis of anterior instability of the shoulder undergoing arthroscopic Bankart repair between 2003 and 2011...
March 1, 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29576905/treatment-of-glenohumeral-arthritis-pain-utilizing-spinal-cord-stimulation
#10
Stephen T Susa, Chris S Karas, Nathaniel K Long
Background: Dorsal column stimulation may be utilized to treat non-neuropathic pain attributed to glenohumeral arthritis. Case Description: An 84-year-old female presented with right shoulder pain for 3 years. She was diagnosed with glenohumeral arthritis and a complete loss of the joint space. She was treated with a dorsal column stimulator, requiring the electrodes to be placed from the inferior aspect of C3 to the superior aspect of T1. Six weeks postoperatively, she reported >90% coverage of her shoulder pain, demonstrated increased right arm function, and a reduction in her use of narcotics...
2018: Surgical Neurology International
https://www.readbyqxmd.com/read/29570749/influence-of-the-musculotendon-dynamics-on-the-muscle-force-sharing-problem-of-the-shoulder-a-fully-inverse-dynamics-approach
#11
Quental Carlos, Azevedo Margarida, Ambrósio Jorge, Gonçalves Sérgio, Folgado João
Most dynamic simulations are based on inverse dynamics, being the time-dependent physiological nature of the muscle properties rarely considered due to numerical challenges. Since the influence of muscle physiology on the consistency of inverse dynamics simulations remains unclear, the purpose of the present study is to evaluate the computational efficiency and biological validity of four musculotendon models that differ in the simulation of the muscle activation and contraction dynamics. Inverse dynamic analyses are performed using a spatial musculoskeletal model of the upper limb...
March 22, 2018: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/29569063/-arthroscopic-double-row-reconstruction-of-high-grade-subscapularis-tendon-tears
#12
F Plachel, S Pauly, P Moroder, M Scheibel
OBJECTIVE: Reconstruction of tendon integrity to maintain glenohumeral joint centration and hence to restore shoulder functional range of motion and to reduce pain. INDICATIONS: Isolated or combined full-thickness subscapularis tendon tears (≥upper two-thirds of the tendon) without both substantial soft tissue degeneration and cranialization of the humeral head. CONTRAINDICATIONS: Chronic tears of the subscapularis tendon with higher grade muscle atrophy, fatty infiltration, and static decentration of the humeral head...
March 22, 2018: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/29567036/fibrocartilaginous-metaplasia-identified-in-the-long-head-of-the-biceps-brachii
#13
Carlo Bottegoni, Luca Farinelli, Alberto Aquili, Sandra Manzotti, Marco Baldini, Antonio Gigante
BACKGROUND: In the glenohumeral joint, the long head of biceps brachii (LHBB) is exposed to tension and compression loading. The short head of biceps brachii (SHBB) works only in tension. It is known that tendon under compression might develop fibrocartilaginous metaplasia that improves the resistance to compression but reduces the resistance to tension. This study evaluated the presence of cartilage in LHBB and SHBB samples, supporting its possible role in tendon tear. METHODS: Between 2014 and 2016, 13 samples of LHBB and SHBB were collected during surgery for shoulder instability, glenohumeral arthritis, and massive rotator cuff tears...
March 19, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29557687/passive-accessory-joint-mobilization-in-the-multimodal-management-of-chronic-dysesthesia-following-thalamic-stroke
#14
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/29555246/functional-outcomes-18-months-after-total-and-midarm-transplantation-a-case-report
#15
M Iglesias, M Ramírez-Berumen, P Butrón, J Alberú-Gómez, F Salazar-Hernández, J Macias-Gallardo, R P Leal-Villalpando, J Zamudio-Bautista, V Acosta, L Jauregui, A Hernández-Campos, V Espinosa-Cruz, J Vázquez-Lamadrid, J González-Sánchez, J Cuellar-Rodriguez, J G Sierra-Madero, R Gaytan-Cervantes, S Contreras-Barbosa, A Navarro-Lara, J Guzman-Gonzalez, J Domínguez-Cherit, M Vilatoba, S Toussaint-Caire, F Vega-Boada, F J Gómez-Pérez, M Mayorquin-Ruiz
BACKGROUND: The function reported after arm transplantation is deemed beneficial relative to the marked disability that upper arm amputation causes. OBJECTIVE: We report a 51-year-old man with a Disabilities of the Arm, Shoulder and Hand (DASH) score of 75.83 who underwent bilateral arm transplantation in October 2015. PROCEDURE: The right arm was transplanted at the glenohumeral joint level, including transplantation of the humeral head, joint capsule, and rotator cuff ligaments and tendons...
March 16, 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29550641/analysis-of-shoulder-compressive-and-shear-forces-during-functional-activities-of-daily-life
#16
Christian Klemt, Joe A Prinold, Sharon Morgans, Samuel H L Smith, Daniel Nolte, Peter Reilly, Anthony M J Bull
BACKGROUND: Knowledge of forces acting through the glenohumeral joint during activities of daily living is a prerequisite for improving implant design and aiding rehabilitation planning. Existing data are limited by the number of activities performed and, in some cases, the lack of representation of the glenohumeral loading direction, although high shear force components may cause joint dislocation or implant loosening. This study aims to analyse shoulder compression and shear force components during essential functional activities of daily living...
March 14, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29546506/translational-movement-within-the-glenohumeral-joint-at-different-rotation-velocities-as-seen-by-cine-mri
#17
Kazuhisa Matsui, Takashi Tachibana, Katsuya Nobuhara, Yasushi Uchiyama
BACKGROUND: The glenohumeral joint is subjected to opposing forces when the direction of shoulder motion is changed, accelerating and decelerating to make the movements. The influence of motion velocity or acceleration on translation of the humeral head has not been evaluated although direction and distance of humeral head translation has been analyzed in real time in normal shoulders. We hypothesized that, in a normal shoulder, the humeral head does not deviate significantly or suddenly during active shoulder rotation regardless of motion velocity...
March 15, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29545694/effect-of-increased-functional-residual-capacity-on-the-active-range-of-thoracic-axial-rotation-in-healthy-young-men
#18
Akira Kubo, Masahiro Ishizaka, Yoshiki Takeuchi, Keita Shimura
[Purpose] To understand the effect of increased functional residual capacity (FRC) on the active range of thoracic axial rotation (AROTAR) in healthy young men. [Subjects and Methods] Thirty-nine right-handed healthy male volunteers (age=20.1 ± 1.6 years) participated in this study. A standard plastic goniometer was used to measure the AROTAR in the supine position with both glenohumeral joints fully flexed. AROTAR was recorded at the resting expiration level (REL) and for 4 different FRC levels: 500, 1,000, 1,500, and 2,000 ml air inhaled at REL...
February 2018: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29537865/critical-glenoid-bone-loss-in-posterior-shoulder-instability
#19
Christopher Nacca, Joseph A Gil, Rohit Badida, Joseph J Crisco, Brett D Owens
BACKGROUND: There is currently no consensus regarding the amount of posterior glenoid bone loss that is considered critical. Critical bone loss is defined as the amount of bone loss that occurs in which an isolated labral repair will not sufficiently restore stability. PURPOSE: The purpose is to identify the critical size of the posterior defect. STUDY DESIGN: Controlled laboratory study. METHODS: Eleven cadaveric shoulders were tested...
March 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29525201/glenohumeral-joint-translation-and-muscle-activity-in-patients-with-symptomatic-rotator-cuff-pathology-an-ultrasonographic-and-electromyographic-study-with-age-matched-controls
#20
Sangeeta Rathi, Nicholas F Taylor, Brendan Soo, Rodney A Green
OBJECTIVES: To determine whether patients with symptomatic rotator cuff pathology had more glenohumeral joint translation and different patterns of rotator cuff muscle activity compared to controls. DESIGN: Repeated measurements of glenohumeral translation and muscle activity in two positions and six testing conditions in two groups. METHODS: Twenty participants with a symptomatic and diagnosed rotator cuff tear and 20 age, and gender matched controls were included...
March 2, 2018: Journal of Science and Medicine in Sport
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