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Teres minor

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https://www.readbyqxmd.com/read/30091009/the-pattern-of-idiopathic-isolated-teres-minor-atrophy-with-regard-to-its-two-bundle-anatomy
#1
Yusuhn Kang, Joong Mo Ahn, Choong Guen Chee, Eugene Lee, Joon Woo Lee, Heung Sik Kang
OBJECTIVE: We aimed to analyze the pattern of teres minor atrophy with regard to its two-bundle anatomy and to assess its association with clinical factors. MATERIALS AND METHODS: Shoulder MRIs performed between January and December 2016 were retrospectively reviewed. Images were evaluated for the presence and pattern of isolated teres minor atrophy. Isolated teres minor atrophy was categorized into complete or partial pattern, and partial pattern was further classified according to the portion of the muscle that was predominantly affected...
August 8, 2018: Skeletal Radiology
https://www.readbyqxmd.com/read/30062459/retaining-or-excising-the-supraspinatus-tendon-in-complex-proximal-humeral-fractures-treated-with-reverse-prosthesis-a-biomechanical-analysis-in-two-different-designs
#2
Joan Miquel, F Santana, E Palau, M Vinagre, K Langohr, A Casals, C Torrens
PURPOSE: We aimed to biomechanically evaluate the effect of the supraspinatus tendon on tuberosity stability using two different reverse shoulder arthroplasty (RSA) models for complex proximal humeral fractures (PHFs). METHODS: Four-part proximal humeral fractures were simulated in 20 cadaveric shoulders. Two different RSA designs were implemented: a glenosphere-medialized model and a glenosphere-lateralized model. Tuberosities were reconstructed, and displacement of bony fragments was measured (mm) by placing three sensors: in the humeral diaphysis (D), in the greater tuberosity (GT), and in the lesser tuberosity (LT)...
July 31, 2018: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/30040788/effects-of-selected-rehabilitative-exercises-on-external-rotator-muscles-and-trapezius-muscles-of-masonry-workers
#3
Greesh Kumar Singh, Sanjay Srivastava, Mukesh Kumar, Shellyka Ratnakar
BACKGROUND: Masonry workers engaged in occupational work-activities have high risk of shoulder injury that often develops to functional loss and disability. Rehabilitative exercises (REs) have potential for slowing this development. OBJECTIVE: The objective is to study the effects of three selected REs on integrated electromyography activations of the external rotator muscles and trapezius muscles of masonry workers. METHODS: Ten subjects, masonry workers having shoulder pain, have volunteered for this study...
2018: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/30010102/electromyographic-analysis-of-selected-shoulder-muscles-during-rehabilitation-exercises
#4
Mukesh Kumar, Sanjay Srivastava, V Soami Das
BACKGROUND: Overhead work-activities and repetitive use of arm in occupational tasks are known risk factors to cause shoulder injury that often develops to functional disability. Rehabilitation exercises (REs) are capable of slowing this development. OBJECTIVE: The main objective of the present work is to experiment with common REs and to identify those which produce significant integrated electromyography (iEMG) activation of selected shoulder muscles namely, posterior deltoid, infraspinatus, teres minor, upper trapezius, middle trapezius and lower trapezius...
July 6, 2018: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/29987440/rotator-cable-in-pathological-shoulders-comparison-with-normal-anatomy-in-a-cadaveric-study
#5
Michał Tomasz Podgórski, Łukasz Olewnik, Piotr Grzelak, Michał Polguj, Mirosław Topol
The rotator cable is a semicircular thickening of the glenohumeral joint capsule. It travels between tubercles of the humerus and interweaves with the supra- and infraspinatus muscle tendons. The rotator cable anchors these tendons to the tubercles, playing the role of a suspension bridge. However, little is known about the modifications of this cable that result from pathologies to the rotator cuff tendons. Thus, we aim to compare the morphology of the normal rotator cable with cables in specimens with rotator cuff injuries...
July 10, 2018: Anatomical Science International
https://www.readbyqxmd.com/read/29954661/rotator-cuff-contact-pressures-at-the-tendon-implant-interface-after-anatomic-total-shoulder-arthroplasty-using-a-metal-backed-glenoid-component
#6
Richard Thomas, Martin Richardson, Minoo Patel, Richard Page, Morgan Sangeux, David C Ackland
BACKGROUND: Rotator cuff tears following anatomic total shoulder arthroplasty increase with duration of follow-up. This study aimed to evaluate contact pressure between the rotator cuff tendons and prosthesis after anatomic total shoulder arthroplasty and compare these with the tendon-contact pressures in the native shoulder. METHODS: Eight entire upper extremities were mounted onto a testing apparatus, and simulated muscle loading was applied to each rotator cuff tendon with the shoulder positioned in abduction, internal rotation, and external rotation...
June 25, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29945400/-precise-application-of-traditional-chinese-medicine-in-minimally-invasive-techniques
#7
Fu-Hui Dong
The miminally-invasive techniques of traditional Chinese medicine(TCM) uses different types of acupuncture needles to treat diseased locations with special techniques. These techniques include different methods of insertion and closed incision (press cutting, sliding cutting, scrape cutting, etc.). This needling technique is based on the traditional Chinese medicine theories of Pi Bu (cutaneous), Jing Jin (sinew), Jing Luo (meridian), Wu Ti (five body structure components) and Zang Fu (organ system). Commonly used needles include: needle Dao , needle with edge, Pi needle, Shui needle, Ren needle, Gou needle, Chang Yuan needle, Bo needle and so on...
June 25, 2018: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29881921/anatomic-analysis-of-the-whole-articular-capsule-of-the-shoulder-joint-with-reference-to-the-capsular-attachment-and-thickness
#8
Daisuke Momma, Akimoto Nimura, Satoru Muro, Hitomi Fujishiro, Takashi Miyamoto, Tadanao Funakoshi, Tomoyuki Mochizuki, Norimasa Iwasaki, Keiichi Akita
BACKGROUND: Although conventional Bankart repair has been the accepted procedure for traumatic anterior glenohumeral instability, the humeral avulsion of the glenohumeral ligament or an elongation of the capsule remains challenging to decide the appropriate treatment. The anatomical knowledge regarding the whole capsule of glenohumeral joint is necessary to accurately treat for the capsular disorders. The aims of the current study were to investigate the anatomical features of capsular attachment and thickness in a whole capsule of glenohumeral joint...
June 7, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29876126/a-novel-and-simple-classification-for-ligamentum-teres-pathology-based-on-joint-hypermobility
#9
REVIEW
John M O'Donnell, Manit Arora
Ligamentum teres (LT) pathology (including synovitis, partial and complete tears) is common at the time of hip arthroscopy with a reported prevalence of 51-90%. Currently, there are four published classifications of LT injuries and tears. The majority focuses on differentiating partial from full thickness tears, whereas a more recently published classification also incorporates the presumed underlying mechanism of pathology. A recent review of the current classification systems found that all are deficient for lack of inclusion of what constitutes a normal ligament, lack of inclusion of synovitis as a source of pathology and lack of inclusion of hypermobility as part of the treatment algorithm...
July 2018: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/29789254/prediction-of-the-irreparability-of-rotator-cuff-tears
#10
In-Bo Kim, Dong Wook Jung, Kuen Tak Suh
PURPOSE: To determine the influence of preoperative factors on reparability of rotator cuff tears (RCTs) and yield a predictive model for predicting irreparability preoperatively. METHODS: Among patients with full-thickness RCTs, the reparable group underwent arthroscopic rotator cuff repairs for reparable RCTs whereas the irreparable group underwent alternative surgical procedures for irreparable RCTs. We analyzed age, sex, chronic pseudoparalysis (CPP), mediolateral and anteroposterior tear sizes, acromiohumeral distance (AHD), tangent sign, fatty infiltration (FI) (group 1, Goutallier stage 0 or 1; and group 2, Goutallier stage 2, 3, or 4), and tendon involvement (TI) (type 1, supraspinatus; type 2, supraspinatus and subscapularis; type 3, supraspinatus and infraspinatus; and type 4, all 3 tendons)...
July 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29757693/a-rotator-cuff-tear-concomitant-with-shoulder-stiffness-is-associated-with-a-lower-retear-rate-after-1-stage-arthroscopic-surgery
#11
In-Bo Kim, Dong-Wook Jung
BACKGROUND: Few studies have reported on the radiological characteristics and repair integrity of coexistent rotator cuff tears (RCTs) and shoulder stiffness after simultaneous arthroscopic rotator cuff repair and capsular release. PURPOSE: To evaluate the radiological characteristics and repair integrity of 1-stage arthroscopic surgery of RCTs concomitant with shoulder stiffness. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Among patients who underwent arthroscopic repair of full-thickness RCTs, the stiff group underwent simultaneous capsular release for shoulder stiffness, and the nonstiff group had no stiffness...
July 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29754845/do-magnetic-resonance-imaging-and-computed-tomography-provide-equivalent-measures-of-rotator-cuff-muscle-size-in-glenohumeral-osteoarthritis
#12
Peter N Chalmers, Lindsay Beck, Irene Stertz, Alexander Aleem, Jay D Keener, Heath B Henninger, Robert Z Tashjian
BACKGROUND: Rotator cuff muscle volume is associated with outcomes after cuff repair and total shoulder arthroplasty. Muscle area on select magnetic resonance imaging (MRI) slices has been shown to be a surrogate for muscle volume. The purpose of this study was to determine whether computed tomography (CT) provides an equivalent measurement of cuff muscle area to a previously validated MRI measurement. METHODS: We included 30 patients before they were undergoing total shoulder arthroplasty with both preoperative CT and MRI scans performed within 30 days of one another at 1 institution using a consistent protocol...
May 10, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29722319/dry-needling-at-myofascial-trigger-points-mitigates-chronic-post-stroke-shoulder-spasticity
#13
Li Tang, Yan Li, Qiang-Min Huang, Yang Yang
Post-stroke spasticity is associated with restriction in the range of motion of the shoulder. Reducing muscular dystrophy may help relieve muscular dysfunction in patients with post-stroke shoulder spasticity. Dry needle therapy is a method of needling the trigger points using a syringe needle without the use of a drug. Dry needle therapy is commonly used for pain at the shoulder, neck, waist, and back. In this case study, a 62-year-old male patient affected with cerebral hemorrhage of the right frontal lobe had received rehabilitative treatment for 12 years...
April 2018: Neural Regeneration Research
https://www.readbyqxmd.com/read/29687149/shoulder-muscle-volume-and-fat-content-in-healthy-adult-volunteers-quantification-with-dixon-mri-to-determine-the-influence-of-demographics-and-handedness
#14
Pascal S Kälin, Rebecca J Crawford, Magda Marcon, Andrei Manoliu, Samy Bouaicha, Michael A Fischer, Erika J Ulbrich
OBJECTIVE: We aimed to provide mean values for fat-fraction and volume for full-length bilateral rotator cuff and deltoid muscles in asymptomatic adults selected on the basis of their good musculoskeletal and systemic health, and to understand the influence of gender, age, and arm dominance. MATERIALS AND METHODS: Seventy-six volunteers aged 20 to 60 years who were screened for normal BMI and high general health were included in the study. MRI was performed at 3 Tesla using three-point DIXON sequences...
April 23, 2018: Skeletal Radiology
https://www.readbyqxmd.com/read/29681600/-diffusion-tensor-imaging-of-rotator-cuff-influence-of-arm-position
#15
Satoru Aono, Kinya Ishizaka, Khin Khin Tha, Sayaka Takamori, Suzuko Aoike, Taro Fujiwara
Diffusion tensor imaging (DTI) of skeletal muscles has been reported as capable to characterize physiological properties, tissue microstructure and architectural organization. However, the DTI indices may vary with the contractile state of the muscles, and in the rotator cuff muscles, a change in forearm position can result in variation of the DTI indices. The purpose of this study was to examine the influence of forearm position on the major DTI indices of the rotator cuff muscles. The DTI of right rotator cuff was acquired under the neutral position and external and internal rotation of the forearm in nine healthy volunteers...
2018: Nihon Hoshasen Gijutsu Gakkai Zasshi
https://www.readbyqxmd.com/read/29618110/identification-of-myofascial-trigger-points-in-breast-cancer-survivors-with-upper-limb-pain-interrater-reliability
#16
An De Groef, Marijke Van Kampen, Evi Dieltjens, Sophie De Geyter, Lore Vos, Tessa De Vrieze, Inge Geraerts, Nele Devoogdt
Objective: Despite the increasing awareness of the contribution of myofascial dysfunctions to upper limb pain in breast cancer survivors, reliability of the identification of myofascial trigger points (MTPs) in this population has not yet been investigated. Therefore, the aim of the present study was to investigate the interrater reliability of the identification of MTPs by palpation at the upper limb region in breast cancer survivors with upper limb pain. Design: Interrater reliability study...
November 22, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/29594336/a-rare-case-of-atypical-thoracodorsal-artery-a-challenge-for-flap-reconstruction
#17
Naveen Kumar, Ashwini P Aithal, Satheesha B Nayak, Ravi Bhaskar
The thoracodorsal artery mainly supplies the latissimus dorsi muscle. Anatomical details pertaining to the origin and distribution of thoracodorsal artery are important because the latissimus dorsi myocutaneous flap is one of the most reliable and versatile flaps used in reconstructive surgery. Atypical origin and course of the thoracodorsal artery is, therefore, a challenge for flap reconstruction surgeries. In the present case, we report multiple variations in the branching pattern of axillary artery. The thoracodorsal artery had an unusual origin from the second part of axillary artery...
August 2018: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29516107/-reversed-total-shoulder-arthroplasty-in-rotator-cuff-defect-arthropathy
#18
REVIEW
T Patzer
BACKGROUND: In a progredient rotator cuff tear with tendon retraction, fatty infiltration and atrophy of rotator cuff muscles the humerus cannot be centered and stabilized sufficiently in the glenohumeral joint. This leads to rotator cuff defect arthropathy as an eccentric osteoarthritis with acetabularization and wear of the acromion, as well as of the glenoid. INDICATION: A painful pseudoparalysis of the shoulder indicates the implantation of a reversed total shoulder arthroplasty (rTSA) to reduce pain and restore active motion...
May 2018: Der Orthopäde
https://www.readbyqxmd.com/read/29509615/the-association-between-rotator-cuff-muscle-fatty-infiltration-and-glenoid-morphology-in-glenohumeral-osteoarthritis
#19
Kenneth W Donohue, Eric T Ricchetti, Jason C Ho, Joseph P Iannotti
BACKGROUND: Glenoid morphology and rotator cuff muscle quality are important anatomic factors that can impact longevity of the glenoid component following total shoulder arthroplasty (TSA). We hypothesized that rotator cuff muscle fatty infiltration is associated with increased pathologic glenoid bone loss in glenohumeral osteoarthritis (OA). METHODS: We retrospectively reviewed 190 preoperative computed tomography (CT) scans of 175 patients (mean age, 66 years; range, 44 to 90 years) who underwent TSA for the treatment of primary glenohumeral OA...
March 7, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29473831/understanding-the-importance-of-the-teres-minor-for-shoulder-function-functional-anatomy-and-pathology
#20
Matthew D Williams, Thomas Bradley Edwards, Gilles Walch
Although the teres minor is often overlooked in a normal shoulder, it becomes a key component in maintaining shoulder function when other rotator cuff tendons fail. The teres minor maintains a balanced glenohumeral joint and changes from an insignificant to the most significant external rotator in the presence of major rotator cuff pathology. The presence or absence of the teres minor provides prognostic information on the outcomes of reverse total shoulder arthroplasty and tendon transfers. Clinical tests include the Patte test, the Neer dropping sign, the external rotation lag sign, and the Hertel drop sign...
March 1, 2018: Journal of the American Academy of Orthopaedic Surgeons
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