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Infraspinatus

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https://read.qxmd.com/read/30770957/an-intact-subscapularis-tendon-and-compensatory-teres-minor-hypertrophy-yield-lower-failure-rates-for-non-operative-treatment-of-irreparable-massive-rotator-cuff-tears
#1
Tae-Hwan Yoon, Sung-Jae Kim, Chong-Hyuk Choi, Soon-Phil Yoon, Yong-Min Chun
PURPOSE: To investigate whether subscapularis integrity and compensatory teres, minor hypertrophy is associated with maintaining relatively good function and tolerable pain levels during non-operative treatment. METHODS: This study included 108 patients with irreparable, massive rotator cuff tears involving at least two tendons and stage III or IV muscle hypotrophy and fatty infiltration on oblique sagittal magnetic resonance imaging, in which even a partial repair does not seem feasible...
February 15, 2019: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://read.qxmd.com/read/30770251/diagnostic-value-of-clinical-tests-for-infraspinatus-tendon-tears
#2
Mirco Sgroi, Thomas Loitsch, Heiko Reichel, Thomas Kappe
PURPOSE: To analyze and compare the diagnostic value and interpretation of 6 established clinical tests for infraspinatus tendon tears; to assess their ability to distinguish between partial- and full-thickness tears of the infraspinatus tendon; and to investigate whether conducting multiple tests increases the precision of diagnosis. METHODS: A total of 91 patients scheduled for shoulder arthroscopy from March 2015 to April 2017 were included in the present study...
February 12, 2019: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://read.qxmd.com/read/30766638/assessment-of-ultrasonography-as-a-diagnostic-tool-in-shoulder-pain-and-alterations-in-glenohumeral-range-of-motion-in-tennis-players
#3
Krzysztof Guzowski, Artur Stolarczyk, Zbigniew Czyrny, Anna Dębek, Bernard Kranc
Introduction: Shoulder pain and alterations in the range of motion are common disorders in tennis players. However, the relation between shoulder structures and these conditions is unknown. Aim: To evaluate whether, using ultrasonography, one can identify tennis players with shoulder pain and those having specific changes of the range of rotation of the glenohumeral joint. Material and methods: A total of 66 subjects were assessed through examination of the range of rotation of the glenohumeral joint and ultrasonography...
January 2019: Wideochirurgia i Inne Techniki Mało Inwazyjne, Videosurgery and Other Miniinvasive Techniques
https://read.qxmd.com/read/30740373/a-rare-cause-of-compression-of-the-suprascapular-nerve-the-paraglenoid-cyst
#4
Sabri Mahjoub, Ahmed Amine Lahmar, Mourad Zarâa, Belhadj Massoud Ahmed, Mohamed Abdelkafi, Mondher Mbarek
Introduction: The ductal syndromes of the shoulder combine all the compressive processes of the suprascapular nerve at the level of its passage in the spinoglenoid notch and this for several causes. The most common is a lesion of the labrum resulting in the formation of a cyst. These cysts are rare and often underestimated. Provoking a compression of the suprascapular nerve, they are likely to cause an atrophy of the external rotator muscles of the cuff. Case Report: We present a rare case of a paraglenoid cyst resulting in a ductal syndrome by suprascapular nerve compression...
September 2018: Journal of Orthopaedic Case Reports
https://read.qxmd.com/read/30740365/unusual-case-of-a-volleyball-athlete-presenting-with-posterior-shoulder-pain-and-infraspinatus-muscle-wasting
#5
Tan Shi Ming, Lim Dao Min, Tan HweeChye Andrew
Introduction: Entrapment of the suprascapular nerve is an uncommon but important differential in patients who present with posterior shoulder pain. Frequently misdiagnosed as rotator cuff or cervical disc disease, this increasingly recognized entity can result from traction-related or compression-related etiology. Two sites of compression include the suprascapular and spinoglenoid notches with the latter less commonly encountered. Case Report: In our study, we describe a case of arthroscopic decompression of suprascapular nerve entrapment at the spinoglenoid notch due to hypertrophied spinoglenoid ligament using an improvised arthroscopic technique...
September 2018: Journal of Orthopaedic Case Reports
https://read.qxmd.com/read/30734521/prevalence-of-myofascial-trigger-points-in-post-stroke-patients-with-painful-shoulders-a-cross-sectional-study
#6
Jorge Hugo Villafañe, Maria Pilar Lopez-Royo, Pablo Herrero, Kristin Valdes, Raquel Cantero-Téllez, Paolo Pedersini, Stefano Negrini
BACKGROUND: In patients with stroke, hemiplegic shoulder pain can be a major problem. One source of shoulder pain can be Myofascial Trigger Points (MTrPs). OBJECTIVE: To determine the prevalence of Myofascial Trigger Points (MTrPs) and the correlation between MTrPs and pain and function in patients presenting with shoulder pain following a stroke. DESIGN: Cross sectional study SETTING: IRCSS Fondazione Don Carlo Gnocchi. PATIENTS: A total of 50 patients with stroke with shoulder pain...
February 7, 2019: PM & R: the Journal of Injury, Function, and Rehabilitation
https://read.qxmd.com/read/30732923/qualitative-ultrasound-training-defining-the-learning-curve
#7
P J Mullaney
AIM: To assess the developing competence of two trainees learning groin and shoulder ultrasound when compared to an expert practitioner. MATERIALS AND METHODS: Specific pro formas were used to record ultrasound trainee performance in each scan region and their diagnosis was compared to the opinion of the expert. The data derived were reviewed using kappa analysis and training end points were defined as a minimum 80% trainee agreement with the expert. Retrospectively, cumulative sum analysis was applied to the data to assess case-by-case performance...
February 4, 2019: Clinical Radiology
https://read.qxmd.com/read/30691988/the-effect-of-subscapularis-muscle-contraction-on-coaptation-of-anteroinferior-glenohumeral-ligament-labrum-complex-after-bankart-repair
#8
Yoshiaki Itoigawa, Alexander W Hooke, John W Sperling, Scott P Steinmann, Kristin D Zhao, Eiji Itoi, Kai-Nan An
Facilitation of healing is important for the anteroinferior glenohumeral ligament-labrum complex (AIGHL-LC) after Bankart repair in shoulder dislocation. The purpose of this study was to investigate the effect of subscapularis muscle loading on contact area and contact pressure between the subscapularis and AIGHL-LC and between the glenoid bone and the AIGHL-LC following Bankart repair. Twenty-two fresh-frozen cadaveric shoulders were used. They were attached to a shoulder-positioning device to which a compression force was applied...
January 22, 2019: Journal of Biomechanics
https://read.qxmd.com/read/30677082/high-pitch-120-kvp-30-mas-low-dose-dual-source-chest-ct-with-iterative-reconstruction-prospective-evaluation-of-radiation-dose-reduction-and-image-quality-compared-with-those-of-standard-pitch-low-dose-chest-ct-in-healthy-adult-volunteers
#9
Hyun Kyung Lim, Hong Il Ha, Hye Jeon Hwang, Kwanseop Lee
PURPOSE: Objective of this study was to evaluate the effectiveness of the iterative reconstruction of high-pitch dual-source chest CT (IR-HP-CT) scanned with low radiation exposure compared with low dose chest CT (LDCT). MATERIALS AND METHODS: This study was approved by the institutional review board. Thirty healthy adult volunteers (mean age 44 years) were enrolled in this study. All volunteers underwent both IR-HP-CT and LDCT. IR-HP-CT was scanned with 120 kVp tube voltage, 30 mAs tube current and pitch 3...
2019: PloS One
https://read.qxmd.com/read/30660043/examining-upper-extremity-muscle-demand-during-selected-push-up-variants
#10
Andrew J Ho, Alan C Cudlip, Daniel C Ribeiro, Clark R Dickerson
Push-ups are regularly adapted for specific muscular demands. The push-up plus (PUP) has been used to emphasize serratus anterior activation. Alterations in body posture have been suggested for targeted activation of muscles surrounding the shoulder and rotator cuff, but little data exists to inform these changes. The purpose of this research was to examine upper extremity muscle activity changes when varying aspects of the PUP. Healthy male participants (n = 20) performed PUP trials using combinations of hand contact area (knuckles/palms), humeral rotation (neutral/60° internal/60° external) and hand location (shoulder height/±30% arm length superior/inferior) at a fixed cadence...
December 28, 2018: Journal of Electromyography and Kinesiology
https://read.qxmd.com/read/30615492/swimming-practice-and-scapular-kinematics-scapulothoracic-muscle-activity-and-the-pressure-pain-threshold-in-young-swimmers
#11
Fernanda A P Habechian, Ana Letícia Lozana, Ann M Cools, Paula R Camargo
CONTEXT: Whereas alterations in scapular kinematics, scapulothoracic muscle activity, and pain sensitivity have been described in adult swimmers, no researchers have examined these outcomes in young swimmers. OBJECTIVES: To compare scapular kinematics, scapulothoracic muscle activation, and the pressure-pain threshold (PPT) of the shoulder muscles among young nonpractitioners (those who were not involved in sports involving the upper limbs), amateur swimmers, and competitive swimmers...
January 7, 2019: Journal of Athletic Training
https://read.qxmd.com/read/30615043/dry-needling-induced-pneumothorax
#12
Niyati Patel, Manali Patel, Brian Poustinchian
Dry needling is a widely used alternative therapy for musculoskeletal disorders, such as myofascial pain. The procedure involves placing a solid monofilament needle into myofascial trigger points or connective tissue to relieve pain. Some of the complications secondary to this procedure include cardiac tamponade, hematoma, infection, nerve injury, and pneumothorax. Although the incidence is low, the complications can be potentially life threatening. We present the case of a 44-year-old man who had dry needling of the infraspinatus, supraspinatus, rhomboid, and paraspinal muscles with subsequent development of a left apical pneumothorax...
January 1, 2019: Journal of the American Osteopathic Association
https://read.qxmd.com/read/30598873/humeral-retroversion-and-shoulder-muscle-changes-in-infants-with-internal-rotation-contractures-following-brachial-plexus-birth-palsy
#13
Fabian van de Bunt, Michael L Pearl, Tom van Essen, Johannes A van der Sluijs
AIM: To examine humeral retroversion in infants who sustained brachial plexus birth palsy (BPBI) and suffered from an internal rotation contracture. Additionally, the role of the infraspinatus (IS) and subscapularis (SSc) muscles in the genesis of this bony deformation is explored. METHODS: Bilateral magnetic resonance imaging (MRI) scans of 35 infants (age range: 2-7 mo old) with BPBI were retrospectively analyzed. Retroversion was measured according to two proximal axes and one distal axis (transepicondylar axis)...
December 18, 2018: World Journal of Orthopedics
https://read.qxmd.com/read/30596519/superior-capsule-reconstruction-for-reinforcement-of-arthroscopic-rotator-cuff-repair-improves-cuff-integrity
#14
Teruhisa Mihata, Thay Q Lee, Akihiko Hasegawa, Kunimoto Fukunishi, Takeshi Kawakami, Yukitaka Fujisawa, Mutsumi Ohue, Munekazu Doi, Masashi Neo
BACKGROUND: Retear of repaired rotator cuff tendons worsens patient outcome and decreases patient satisfaction. Superior capsule reconstruction (SCR) was developed to center the humeral head and thus restore the force couple for patients with rotator cuff tears. PURPOSE: To evaluate whether SCR for reinforcement before arthroscopic rotator cuff repair (ARCR) improves cuff integrity. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Thirty-four consecutive patients (mean age, 69...
December 31, 2018: American Journal of Sports Medicine
https://read.qxmd.com/read/30591872/transcapsular-decompression-of-shoulder-ganglion-cysts
#15
Cameron J Phillips, Adam C Field, Larry D Field
Paralabral cysts are an increasingly recognized cause of suprascapular nerve (SSN) impingement, often causing insidious weakness in the rotator cuff. Compression at the suprascapular notch is often due to the presence of a SLAP tear and leads to pain, weakness, and atrophy of both the supraspinatus and infraspinatus muscles. Compression of the SSN at the spinoglenoid notch leads to weakness and atrophy of the infraspinatus only. Arthroscopic decompression of cysts with repair of labral pathology is typically performed in a sublabral fashion, which may make visualization of the extent of the cyst difficult and places the SSN at increased risk...
December 2018: Arthroscopy Techniques
https://read.qxmd.com/read/30580126/arm-posture-influences-on-regional-supraspinatus-and-infraspinatus-activation-in-isometric-arm-elevation-efforts
#16
Talia Alenabi, Rachel L Whittaker, Soo Y Kim, Clark R Dickerson
This study aimed to evaluate the effect of arm posture on activation of the anterior and posterior regions of supraspinatus and the superior and middle regions of infraspinatus during resisted isometric arm elevations. Thirty-one healthy participants performed 18 isometric resistance exertions against a force cube in three elevation planes (flexion, scaption, abduction) and three elevation angles (30°, 90°, 150°) in maximal and sub-maximal resistance conditions. EMG data were obtained using four pairs of fine wire electrodes...
December 15, 2018: Journal of Electromyography and Kinesiology
https://read.qxmd.com/read/30578674/disease-duration-and-disability-in-dysfelinopathy-can-be-described-by-muscle-imaging-using-heatmaps-and-random-forests
#17
David Gómez-Andrés, Jorge Díaz, Francina Munell, Ángel Sánchez-Montáñez, Irene Pulido-Valdeolivas, Lionel Suazo, Cristián Garrido, Susana Quijano-Roy, Jorge A Bevilacqua
INTRODUCTION: The manner in which imaging patterns change over the disease course and with increasing disability in dysferlinopathy is not fully understood. METHODS: Fibroadipose infiltration of 61 muscles was scored based on whole-body MRI of 33 patients with dysferlinopathy and represented in a heatmap. We trained random forests to predict disease duration, motor function measure dimension 1 (MFM-D1) and modified Rankin scale (mRS) based on muscle scoring and selected the most important muscle for predictions...
December 22, 2018: Muscle & Nerve
https://read.qxmd.com/read/30574734/conservative-treatment-after-axillary-nerve-re-injury-in-a-rugby-player-a-case-report
#18
Antonio Frizziero, Filippo Vittadini, Alessandra Del Felice, Domenico Creta, Erika Ferlito, Roberto Gasparotti, Stefano Masiero
BACKGROUND: Axillary nerve injuries are uncommon, although the incidence is higher in athletes, both related to direct contusion or quadrilateral space syndrome. While few studies have investigated conservative strategies that could be proposed to avoid surgery, no previous case report documented the possible role of rehabilitation in axillary nerve re- injuries. CASE REPORT: Our patient is a 27-year-old male professional rugby player who experienced a recurrent episode of deltoid strength loss, after a previous axillary nerve injury...
December 21, 2018: European Journal of Physical and Rehabilitation Medicine
https://read.qxmd.com/read/30573430/long-term-results-after-arthroscopic-transosseous-rotator-cuff-repair
#19
Fabian Plachel, Andreas Traweger, Imre Vasvary, Jakob E Schanda, Herbert Resch, Philipp Moroder
BACKGROUND: The purpose of this study was to evaluate the long-term clinical and radiologic results after arthroscopic transosseous rotator cuff repair (TORCR). METHODS: A total of 69 patients with full-thickness supraspinatus tendon tears with or without infraspinatus tendon tears treated with arthroscopic TORCR by a single surgeon between 1998 and 2003 were included. Among them, 56 patients (81%) with a mean age of 58 ± 5 years (range, 42-70 years) were available for final follow-up examination after an average of 15 ± 2 years (range, 12-18 years)...
December 17, 2018: Journal of Shoulder and Elbow Surgery
https://read.qxmd.com/read/30573428/rotator-cuff-muscles-fatty-infiltration-increases-with-age-retrospective-review-of-210-patients-with-intact-cuff-on-computed-tomography-arthrography
#20
Jeremy Gueniche, Guillaume Bierry
HYPOTHESIS: We aimed to demonstrate that rotator cuff fatty infiltration (FI) increases physiologically with age and that a FI degree of 2 might be encountered in patients with an intact cuff. METHODS: We retrospectively evaluated the FI of 210 patients (classified in 7 age groups: <20, 20-30, 30-40, 40-50, 50-60, 60-70, and >70 years) who had an intact cuff on computed tomography (CT) arthrography. The Goutallier grading system was used to assess FI of rotator cuff muscles and of the deltoid muscle...
December 18, 2018: Journal of Shoulder and Elbow Surgery
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