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measurements of the subacromial space

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https://www.readbyqxmd.com/read/28211284/decreased-axial-coracoid-inclination-angle-is-associated-with-rotator-cuff-tears
#1
Carlos Torrens, Eduard Alentorn-Geli, Juan Francisco Sanchez, Anna Isart, Fernando Santana
PURPOSE: Coracoid morphology has been related to coracoid impingement mainly resulting in anterior shoulder pain aggravated by forward flexion and internal rotation. However, the coracoid process morphology can also affect the inclination of the coracoacromial ligament and subsequently the subacromial space in the same way that acromial slope does. The purpose of this study was to evaluate the influence of the coracoid body-glenoid surface, coracoid tip-glenoid surface, and coracoid body-coracoid tip angles (coracoid inclination angles) on rotator cuff tears (RCTs)...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28188359/in-vivo-analysis-of-coracoid-and-subacromial-shoulder-impingement-mechanism-during-clinical-examination
#2
Tim Leschinger, Christopher Wallraff, Dirk Müller, Matthias Hackenbroch, Henning Bovenschulte, Jan Siewe
BACKGROUND: Understanding the mechanisms of shoulder impingement created by clinical tests is crucial to accurately evaluate the condition. The objective of this study was to relate mechanisms of subacromial and coracoid impingement occurring in positions of the shoulder during clinical examination, in quantitative and qualitative terms. METHODS: A 1.0T open magnetic resonance imaging system was used in 18 female and 19 male subjects, to determine the distances between the humeral head and the acromion or coracoid, and contact with the rotator cuff (RC)...
February 11, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28042977/full-can-test-mechanisms-of-a-positive-test-in-patients-with-shoulder-pain
#3
Mark K Timmons, Sevgi S Yesilyaprak, Jeff Ericksen, Lori A Michener
BACKGROUND: The full can test is theorized to produce compressive loads on the supraspinatus tendon within the subacromial space. Characterizing the width of the subacromial outlet, scapular orientation, and shoulder pain during the full can test will improve the mechanistic understanding of the positive full can test. METHODS: Cross-sectional repeated measures design. Participants with subacromial pain syndrome (n=30) were compared to a matched control group (n=30) during 2 conditions: passive support, and the full can test...
February 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/27834581/cross-sectional-area-of-the-supraspinatus-muscle-and-acromio-humeral-distance-in-overhead-athletes-with-and-without-shoulder-pain-a-cross-sectional-study
#4
Josep C Benitez-Martinez, Jose Casaña-Granell, Yasmin Ezzatvar de Llago, Carlos Villaron-Casales, Gemma V Espi-Lopez, Fernando Jimenez-Diaz
CONTEXT: The supraspinatus muscle has an important role in the stabilization of the glenohumeral joint. Identifying abnormalities concerning its size and the subacromial space in the presence of pain may be relevant to provide more specific treatments focused on the etiology of pain. OBJECTIVE: to determinate whether painful shoulder causes changes in the supraspinatus cross-sectional area (CSA) and the acromio-humeral distance (AHD) between overhead athletes. DESIGN: Cross-sectional study...
November 11, 2016: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/27776926/ultrasound-evaluation-of-the-subacromial-space-in-healthy-subjects-performing-three-different-positions-of-shoulder-abduction-in-both-loaded-and-unloaded-conditions
#5
RANDOMIZED CONTROLLED TRIAL
Stefano Longo, Alberto Corradi, Giovanni Michielon, Francesco Sardanelli, Luca Maria Sconfienza
BACKGROUND: Subacromial space (SS) narrowing may result in unsafe contact of rotator cuff tendons and bursa with the acromion, possibly promoting rotator cuff pathologies and pain. We measured SS in asymptomatic subjects after three movements employed for shoulder muscles' training. PARTICIPANTS AND MAIN OUTCOME MEASURES: Twenty-five males (age 24±5years; stature 175±8 cm; body mass 74±12 kg) underwent SS ultrasound evaluation while executing with (WL) and without (NL) 4-kg load: 90° shoulder abduction (SA) without humerus rotation (90°neutral); 90° SA maximal humeral external rotation (90°er); maximum SA (above 90°) during upright row (UR)...
January 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/27687065/anatomical-and-morphological-study-of-the-subcoracoacromial-canal
#6
O Le Reun, J Lebhar, F Mateos, J L Voisin, H Thomazeau, M Ropars
INTRODUCTION: Many clinical anatomy studies have looked into how variations in the acromion, coracoacromial ligament (CAL) and subacromial space are associated with rotator cuff injuries. However, no study up to now had defined anatomically the fibro-osseous canal that confines the supraspinatus muscle in the subcoracoacromial space. Through an anatomical study of the scapula, we defined the bone-related parameters of this canal and its anatomical variations. MATERIALS AND METHODS: This study on dry bones involved 71 scapulas...
September 26, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/27613762/surgical-release-of-the-pectoralis-minor-tendon-for-scapular-dyskinesia-and-shoulder-pain
#7
Matthew T Provencher, Hannah Kirby, Lucas S McDonald, Petar Golijanin, Daniel Gross, Kevin J Campbell, Lance LeClere, George Sanchez, Shawn Anthony, Anthony A Romeo
BACKGROUND: Pectoralis minor (PM) tightness has been linked to pain and dysfunction of the shoulder joint secondary to anterior tilt and internal rotation of the scapula, thus causing secondary impingement of the subacromial space. PURPOSE: To describe outcomes pertaining to nonoperative and operative treatment via surgical release of the PM tendon for pathologic PM tightness in an active population. STUDY DESIGN: Case series; Level of evidence, 4...
January 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27469590/corticosteroid-injections-give-small-and-transient-pain-relief-in-rotator-cuff-tendinosis-a-meta-analysis
#8
REVIEW
Amin Mohamadi, Jimmy J Chan, Femke M A P Claessen, David Ring, Neal C Chen
BACKGROUND: The ability of injection of corticosteroids into the subacromial space to relieve pain ascribed to rotator cuff tendinosis is debated. The number of patients who have an injection before one gets relief beyond what a placebo provides is uncertain. QUESTIONS/PURPOSES: We asked: (1) Do corticosteroid injections reduce pain in patients with rotator cuff tendinosis 3 months after injection, and if so, what is the number needed to treat (NNT)? (2) Are multiple injections better than one single injection with respect to pain reduction at 3 months? METHODS: We systematically searched seven electronic databases for randomized controlled trials of corticosteroid injection for rotator cuff tendinosis compared with a placebo injection...
January 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27434235/dynamic-three-dimensional-shoulder-mri-during-active-motion-for-investigation-of-rotator-cuff-diseases
#9
Christine Tempelaere, Jérome Pierrart, Marie-Martine Lefèvre-Colau, Valérie Vuillemin, Charles-André Cuénod, Ulrich Hansen, Olivier Mir, Wafa Skalli, Thomas Gregory
BACKGROUND: MRI is the standard methodology in diagnosis of rotator cuff diseases. However, many patients continue to have pain despite treatment, and MRI of a static unloaded shoulder seems insufficient for best diagnosis and treatment. This study evaluated if Dynamic MRI provides novel kinematic data that can be used to improve the understanding, diagnosis and best treatment of rotator cuff diseases. METHODS: Dynamic MRI provided real-time 3D image series and was used to measure changes in the width of subacromial space, superior-inferior translation and anterior-posterior translation of the humeral head relative to the glenoid during active abduction...
2016: PloS One
https://www.readbyqxmd.com/read/27183829/relationship-between-extrinsic-factors-and-the-acromio-humeral-distance
#10
Tanya Anne Mackenzie, Lee Herrington, Lenard Funk, Ian Horsley, Ann Cools
BACKGROUND: Maintenance of the subacromial space is important in impingement syndromes. Research exploring the correlation between biomechanical factors and the subacromial space would be beneficial. OBJECTIVES: To establish if relationship exists between the independent variables of scapular rotation, shoulder internal rotation, shoulder external rotation, total arc of shoulder rotation, pectoralis minor length, thoracic curve, and shoulder activity level with the dependant variables: AHD in neutral, AHD in 60° arm abduction, and percentage reduction in AHD...
June 2016: Manual Therapy
https://www.readbyqxmd.com/read/27102401/reduction-of-the-subacromial-space-in-athletes-with-and-without-rotator-cuff-tendinopathy-and-its-association-with-the-strength-of-scapular-muscles
#11
Hio Teng Leong, Sammi Sin Mei Tsui, Gabriel Yin-Fat Ng, Siu Ngor Fu
OBJECTIVES: To compare the reduction of subacromial space (SAS) during arm abduction between overhead athletes with and without rotator cuff (RC) tendinopathy, and to explore the relationship between the strength of scapular muscles with the SAS. DESIGN: Cross-sectional study. METHODS: Sixty-six athletes (33 healthy and 33 with RC tendinopathy, mean age=22.3 years) participated in the study. Ultrasound measurement of the SAS with arm at 0°, 30° and 60° of shoulder abduction were taken, and the maximal isometric force in upper, middle and lower trapezius, and serratus anterior with manual muscle tests (MMT) were assessed using a handheld dynamometer...
December 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27069885/evaluation-of-the-acromiohumeral-distance-by-means-of-magnetic-resonance-imaging-umerus
#12
Flávio de Oliveira França, André Couto Godinho, Elísio José Salgado Ribeiro, Lorenzo Falster, Lucas Emanuel Gava Búrigo, Rafael Berenstein Nunes
OBJECTIVE: To demonstrate the relationship between the size, degree of retraction and topography of rotator cuff injuries and the degree of rise of the humeral head, and to evaluate the influence of gravity, using magnetic resonance imaging (MRI). METHODS: We evaluated 181 shoulder MRIs from 160 patients aged over 45 years, between November 2013 and July 2014. The patients were divided into two groups: one control (no lesion or partial damage to the rotator cuff); and the other with complete tears of the rotator cuff...
March 2016: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/26875065/proper-site-of-corticosteroid-injection-for-the-treatment-of-idiopathic-frozen-shoulder-results-from-a-randomized-trial
#13
Chul-Hyun Cho, Du Hwan Kim, Ki-Cheor Bae, Donggyu Lee, Kyoungtae Kim
OBJECTIVE: The objective is to determine whether corticosteroid injection into the subacromial space was not inferior to intra-articular injection in patients with idiopathic frozen shoulder (FS), and whether combined injections had an additive effect. METHODS: Patients with idiopathic FS (n=126) were randomly assigned to receive ultrasound-guided intra-articular (IA group), subacromial (SA group), or combined IA and subacromial injections (IA+SA group). All groups received a total dose of 40mg triamcinolone acetonide...
May 2016: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/26794629/comparison-of-upper-extremity-physical-characteristics-between-adolescent-competitive-swimmers-and-nonoverhead-athletes
#14
COMPARATIVE STUDY
Elizabeth E Hibberd, Kevin Laudner, David J Berkoff, Kristen L Kucera, Bing Yu, Joseph B Myers
CONTEXT: Alterations to upper extremity physical characteristics of competitive swimmers (posture, range of motion [ROM], and subacromial-space distance) are commonly attributed to cumulative training load during a swimmer's competitive career. However, this accepted clinical belief has not been established in the literature. It is important to understand whether alterations in posture and associated physical characteristics occur as a result of sport training or factors other than swimming participation to better understand injury risk and possible interventions...
January 2016: Journal of Athletic Training
https://www.readbyqxmd.com/read/26792567/morphological-analysis-of-acromion-and-hook-plate-for-the-fixation-of-acromioclavicular-joint-dislocation
#15
Jong Pil Yoon, Yeon Soo Lee, Geun Soo Song, Joo Han Oh
PURPOSE: Acromioclavicular (AC) joint dislocation is a common sports injury. Hook plate fixation is currently widely used to treat this injury, as it can promote the natural healing of the ligament with good clinical outcomes. However, subacromial erosion and impingement are frequently observed post-operatively. It was hypothesized that the morphology and the contact characteristics between the hook portion and the acromion are the main causes of complications after hook plate fixation with the currently available commercial designs...
January 20, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/26637642/improving-shoulder-kinematics-in-individuals-with-paraplegia-comparison-across-circuit-resistance-training-exercises-and-modifications-in-hand-position
#16
Linda M Riek, Joshua Tome, Paula M Ludewig, Deborah A Nawoczenski
BACKGROUND: Circuit resistance training (CRT) should promote favorable kinematics (scapular posterior tilt, upward rotation, glenohumeral or scapular external rotation) to protect the shoulder from mechanical impingement following paraplegia. Understanding kinematics during CRT may provide a biomechanical rationale for exercise positions and exercise selection promoting healthy shoulders. OBJECTIVE: The purposes of this study were: (1) to determine whether altering hand position during CRT favorably modifies glenohumeral and scapular kinematics and (2) to compare 3-dimensional glenohumeral and scapular kinematics during CRT exercises...
July 2016: Physical Therapy
https://www.readbyqxmd.com/read/26636073/scapulothoracic-and-glenohumeral-kinematics-during-daily-tasks-in-users-of-manual-wheelchairs
#17
Kristin D Zhao, Meegan G Van Straaten, Beth A Cloud, Melissa M Morrow, Kai-Nan An, Paula M Ludewig
BACKGROUND: Rates of shoulder pain in individuals who use manual wheelchairs (MWCs) as their primary means of mobility have been reported to be as high as 70% during activities of daily living. Current prevailing thought is that mechanical impingement of the soft tissues that reside within the subacromial space between the humeral head and coracoacromial arch is a major contributor to the shoulder pain in users of MWCs. The subacromial space size is directly related to the kinematics at the shoulder joint...
2015: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/26620280/effects-of-exercise-therapy-for-the-treatment-of%C3%A2-symptomatic-full-thickness-supraspinatus-tears-on-in%C3%A2-vivo-glenohumeral-kinematics
#18
R Matthew Miller, Adam Popchak, Dharmesh Vyas, Scott Tashman, James J Irrgang, Volker Musahl, Richard E Debski
BACKGROUND: The high incidence of rotator cuff disease combined with high failure rates for nonoperative treatment of full-thickness rotator cuff tears underlines the importance of improving nonoperative management of rotator cuff tears. The study objective was to assess changes in in vivo glenohumeral kinematics of patients with a symptomatic full-thickness supraspinatus tear before and after a 12-week exercise therapy program. It was hypothesized that successful exercise therapy would result in improved kinematics (smaller translations and increased subacromial space)...
April 2016: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/26577128/empty-can-exercise-provokes-more-pain-and-has-undesirable-biomechanics-compared-with-the-full-can-exercise
#19
Mark K Timmons, Jeff J Ericksen, Sevgi S Yesilyaprak, Lori A Michener
BACKGROUND: The purpose of this investigation was to characterize the scapular position and scapular muscle activation during the empty can (EC) and full can (FC) exercises. The EC exercise has been shown to produce scapular kinematics associated with the mechanism leading to subacromial impingement syndrome (SAIS) but has not been investigated in patients with (SAIS). This investigation will help improve the treatment of patients with SAIS. METHODS: Participants with SAIS (n = 28) performed 5 consecutive repetitions of FC and EC exercises...
April 2016: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/26423256/macroscopic-and-microscopic-assessments-of-the-glenohumeral-and-subacromial-synovitis-in-rotator-cuff-disease
#20
COMPARATIVE STUDY
Chris H Jo, Ji Sun Shin, Ji Eun Kim, Sohee Oh
BACKGROUND: Whereas synovitis is one of most common findings during arthroscopic surgery in patients with rotator cuff diseases, no study has investigated its characteristics. We propose a macroscopic assessment system for investigating the characteristics of synovitis. METHODS: Fifty-four patients with a full-thickness rotator cuff tear undergoing arthroscopic rotator cuff repair with an average age of 62.5 ± 7.0 years were included. For the macroscopic assessment, 3 parameters, villous hypertrophy, hyperemia, and density, were measured and translated into grades in 3 regions-of-interest (ROI) in the glenohumeral joint and 4 ROIs in the subacromial space...
September 30, 2015: BMC Musculoskeletal Disorders
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