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Biceps Tendon

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https://www.readbyqxmd.com/read/28809705/effects-of-continuous-kinaesthetic-feedback-based-on-tendon-vibration-on-motor-imagery-bci-performance
#1
M Barsotti, D Leonardis, N Vanello, M Bergamasco, A Frisoli
BACKGROUND AND OBJECTIVES: Feedback plays a crucial role for using Brain Computer Interface (BCI) systems. This study proposes the use of vibration-evoked kinaesthetic illusions as part of a novel multisensory feedback for a Motor Imagery (MI) based BCI and investigates its contributions in terms of BCI performance and electroencephalographic (EEG) correlates. METHODS: Sixteen subjects performed two different right arm MI-BCI sessions: with the visual feedback only and with both visual and vibration-evoked kinaesthetic feedback, conveyed by the stimulation of the biceps brachi tendon...
August 14, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28808728/-subpectoral-tenodesis-of-the-long-head-of-the-biceps-tendon-with-an-interference-screw-and-a%C3%A2-cortical-button-clinical-and-cosmetic-results-after-1-year
#2
P-C Nolte, N Pister, F Holz, M Egenolf, T Chatterjee
BACKGROUND: Pathologies of the long head of biceps tendon (LHB) can cause anterior shoulder pain. Surgical treatment includes tenotomy and tenodesis (TD), however TD causes fewer cosmetic deformities and less cramping of the biceps muscle. To date, numerous techniques for TD have been described but the "gold standard" has not yet been established. OBJECTIVES: The purpose of this study is to evaluate the functional and cosmetic outcome following subpectoral biceps TD with an interference screw and a cortical-button (STLHB-IC) after 1 year...
August 14, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28795411/does-ultrasound-enhanced-instruction-of-musculoskeletal-anatomy-improve-physical-examination-skills-of-first-year-medical-students
#3
Bryant J Walrod, Allison Schroeder, Mark J Conroy, Laura C Boucher, Marcia Bockbrader, David P Way, Kendra L McCamey, Clinton A Hartz, Michael A Jonesco, David P Bahner
OBJECTIVES: Ultrasound imaging is commonly used to teach basic anatomy to medical students. The purpose of this study was to determine whether learning musculoskeletal anatomy with ultrasound improved performance on medical students' musculoskeletal physical examination skills. METHODS: Twenty-seven first-year medical students were randomly assigned to 1 of 2 instructional groups: either shoulder or knee. Both groups received a lecture followed by hands-on ultrasound scanning on live human models of the assigned joint...
August 10, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28779798/editorial-commentary-does-size-matter-drill-holes-in-subpectoral-biceps-tenodesis
#4
EDITORIAL
Brian B Gilmer
Proximal humerus fracture after subpectoral tenodesis (SPBT) of the long head of the biceps tendon is a rare but serious complication. Examination of the biceps tendon diameter after preparation for SPBT in vivo suggests that the use of a smaller tenodesis screw is technically possible. However, questions remain about the biomechanical strength of the tenodesis construct with a smaller interference screw and about whether or not the size of a drill hole is the predominant factor in determining the risk of fracture...
August 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28768671/paget-schroetter-syndrome-complicated-by-an-incidental-pulmonary-embolism
#5
Jakub Kaczynski, Joseph Sathiananthan
A young man presented with the severe right upper limb swelling following a heavy weight lifting that was thought to be caused by a biceps tendon rupture. However, subsequent investigations confirmed the diagnosis of Paget-Schroetter syndrome that was associated with an incidental pulmonary embolism. The patient underwent a successful thrombolysis followed by a surgical thoracic outlet decompression. Overall, the patient has made a good recovery.
August 2, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28767362/modeling-of-stretch-reflex-activation-considering-muscle-type
#6
Moon J Kang, Choongsoo S Shin, Hong H Yoo
Although the stretch reflex plays an important role in spasticity, so far the stretch reflex has not been sufficiently investigated. Previous stretch reflex activation models have some limitations, whereby they are not able to predict outcomes of some stretch reflex cases and do not consider uneven distribution of muscle length and stretch velocity on reflex activation. The purpose of this study was 1) to develop a modified stretch reflex activation model employing a new muscle length threshold and weighting factors for slow-twitch fiber and fast-twitch fiber, and 2) to validate the model using pendulum experiments of the lower and upper limbs...
July 31, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28751995/-monocept-a-brief-report-of-congenital-absence-of-the-long-head-of-the-biceps-tendon-and-literature-review
#7
Benjamin A Winston, Katlyn Robinson, Dennis Crawford
The long head of the biceps tendon plays an important role in shoulder stability and its functional absence has been shown to contribute to glenohumeral instability. Congenital absence of the long head to the biceps tendon is rare, although described in the literature. We report the case of an 18-year-old recreational athlete with recurrent shoulder instability and congenital absence of the long head of the biceps tendon (which we term "monocept") and mild ipsilateral upper extremity hemimelia. The patient was treated surgically with posterior capsular shift with anterior Bankart repair without complication...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/28744052/ultrasonography-of-the-shoulder-asymptomatic-findings-from-working-age-women-in-the-general-population
#8
Roberto Meroni, Daniele Piscitelli, Sansone Valerio, Paola Boria, Cecilia Perin, Giovanni De Vito, Cesare Maria Cornaggia, Cesare Giuseppe Cerri
[Purpose] The aim of this study was to estimate the prevalence of abnormal shoulder ultrasonographic findings in a sample of asymptomatic women. [Subjects and Methods] A secondary analysis of a cross-sectional study was performed. We recruited 305 women (aged 18-56 years). All the subjects had a structured interview screening for self-reported symptoms and underwent a shoulder ultrasonographic examination, in which both shoulders were examined. The radiologist was blinded to the clinical history of the participants...
July 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28739313/cardiac-amyloidosis-an-update-on-pathophysiology-diagnosis-and-treatment
#9
REVIEW
Omar K Siddiqi, Frederick L Ruberg
The amyloidoses are a group of systemic diseases characterized by organ deposition of misfolded protein fragments of diverse origins. The natural history of the disease, involvement of other organs, and treatment options vary significantly based on the protein of origin. In AL amyloidosis, amyloid protein is derived from immunoglobulin light chains, and most often involves the kidneys and the heart. ATTR amyloidosis is categorized as mutant or wild-type depending on the genetic sequence of the transthyretin (TTR) protein produced by the liver...
July 13, 2017: Trends in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28735427/biomechanical-evaluation-of-distal-biceps-tendon-repair-using-tension-slide-technique-and-knotless-fixation-technique
#10
David D Savin, Hristo Piponov, Jonathan N Watson, Ari R Youderian, Farid Amirouche, Giovanni F Solitro, Mark R Hutchinson, Benjamin A Goldberg
BACKGROUND: Acute distal biceps tendon ruptures are uncommon injuries that often affect young active males, typically resulting from an eccentric load on their dominant extremity. The purpose of this study was to compare pullout strength and tendon gapping in the tension slide technique (TST) versus a knotless fixation technique (KFT). METHODS: Two sets of experiments were performed using cadaveric elbow specimens. In the first experiment, eight elbows from different cadavers were tested to compare TST with a standard locking whipstitch with KFT, four elbows in each group, using a standard locking whipstitch...
July 22, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28719995/biomechanics-of-the-proximal-radius-following-drilling-of-the-bicipital-tuberosity-to-mimic-cortical-button-distal-biceps-repair-technique
#11
Nikhil R Oak, John R Lien, Alexander Brunfeldt, Jeffrey N Lawton
BACKGROUND: A fracture through the proximal radius is a theoretical concern after cortical button distal biceps fixation in an active patient. The permanent, nonossified cortical defect and medullary tunnel is at risk during a fall eliciting rotational and compressive forces. We hypothesized that during simulated torsion and compression, in comparison with unaltered specimens, the cortical button distal biceps repair model would have decreased torsional and compressive strength and would fracture in the vicinity of the bicipital tuberosity bone tunnel...
March 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28706821/arthroscopic-transtendinous-biceps-tenodesis-with-all-suture-anchor
#12
Chien-An Shih, Florence L Chiang, Chih-Kai Hong, Cheng-Wei Lin, Ping-Hui Wang, I-Ming Jou, Wei-Ren Su
There are several methods for long head of the biceps (LHB) tenodesis, yet the optimal option is still debatable. Here we introduce a technique for arthroscopic suprapectoral biceps tenodesis with an all-suture anchor, the transtendinous biceps tenodesis technique. The LHB tenodesis is performed by using the Y-Knot anchor (1.3-mm). A standard suprapectoral approach is used for the tenodesis. A 1.3-mm drill bit is used to drill through the midportion of the biceps tendon and underlying bone to make a pilot hole...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28706810/a-simple-all-arthroscopic-knotless-suture-lasso-loop-technique-for-suprapectoral-biceps-tenodesis
#13
David Saper, Xinning Li
A variety of pathology of the long head of the biceps tendon can contribute to anterior shoulder pain in adults that can be managed with either arthroscopic tenotomy or tenodesis when conservative treatment fails. Biceps deformity or the Popeye sign is a major concern in patients after tenotomy. Biceps tenodesis can be performed in a variety of ways with different sized anchors and at different locations (suprapectoral or subpectoral). Several studies have shown that patient outcomes and complication rates are similar between all-arthroscopic suprapectoral biceps tenodesis and open subpectoral biceps tenodesis...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28702397/reconstruction-of-the-distal-biceps-tendon-using-triceps-graft-a-technical-note
#14
Thiago Medeiros Storti, Alexandre Firmino Paniago, Rafael Salomon Silva Faria
Rupture of the distal biceps brachii tendon typically occur in a contraction against resistance with the elbow in 90° of flexion. Chronic ruptures are uncommon and are complicated by tendon and muscle retraction and poor quality. Some reconstruction techniques have been described in the literature, with variations on the surgical exposures, type of graft (allo or autograft), graft donor site, and type of attachment to the radial tuberosity. The authors report the case of a patient presented a rupture of the distal biceps brachii tendon that took place five weeks earlier and, therefore, underwent reconstruction using autograft from the central strip of triceps tendon through double incision and fixation with anchors to the radial tuberosity...
May 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28702386/disorders-of-the-long-head-of-the-biceps-tenotomy-versus-tenodesis
#15
Fabiano Rebouças Ribeiro, André Petry Sandoval Ursolino, Vinicius Ferreira Lima Ramos, Fernando Hovaguim Takesian, Antonio Carlos Tenor Júnior, Miguel Pereira da Costa
Disorders of the long head of biceps tendon are common in clinical practice. Their causes could be degenerative, inflammatory, instability (subluxation or luxation) or traumatic. They are generally associated to other diseases of the shoulder, mainly rotator cuff injuries. Currently, there is controversy in the literature regarding the indications for surgical treatment and the choice of the best technique for each case, due to the possibility of esthetic deformity, loss of muscle strength, and residual pain...
May 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28701853/low-incidence-of-failure-after-proximal-biceps-tenodesis-with-unicortical-suture-button
#16
Jay B Cook, David M Sedory, Michael C Freidl, Douglas R Adams
PURPOSE: Recent interest in suture button fixation has developed with regard to proximal biceps tenodesis fixation. Biomechanical studies have demonstrated viability of a unicortical suture button technique in vitro. Despite this, no clinical data has been reported to validate the biomechanical data. The purpose of this study is to report on complication and failure rates in the early postoperative period after bicep tenodesis with a unicortical suture button. METHODS: A retrospective review was performed of all biceps tenodesis performed at our institution over a 36-month period using a unicortical suture button for fixation...
September 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28685367/rare-muscular-variations-identified-in-a-single-cadaveric-upper-limb-a-four-headed-biceps-brachii-and-muscular-elevator-of-the-latissimus-dorsi-tendon
#17
Colin W Moore, Charles L Rice
Supernumerary or accessory heads of the biceps brachii are persistent muscular structures which can vary in number and location in the arm. Variations in other arm muscles, such as the coracobrachialis, can accompany supernumerary biceps brachii musculature in the upper limb. In this case report, we describe two rare muscular variants in a single adult male: a four-headed biceps brachii and the muscular elevator of the latissimus dorsi tendon. Additionally, accessory muscles of the brachialis and flexor digiti minimi brevis were identified in the upper limb...
July 6, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/28684148/in%C3%A2-vivo-analysis-of-biceps-tendon-characteristics-in-subpectoral-tenodesis
#18
Raffy Mirzayan, Tadashi Takara, Michael Batech, Christopher L McCrum
PURPOSE: To report the in vivo characteristics of the long head of the biceps tendon (LHBT); to evaluate the relation of age, gender, height, weight, and body mass index to the length and sutured and tubularized diameter of the LHBT; and to determine the smallest possible tunnel diameter for a subpectoral biceps tenodesis (SPBT) that can accommodate most patients. METHODS: The study included 66 patients (33 men and 33 women) with an average age of 54 years (range, 29-73 years) undergoing SPBT...
August 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28670360/pain-and-the-pathogenesis-of-biceps-tendinopathy
#19
REVIEW
Elise B Raney, Finosh G Thankam, Matthew F Dilisio, Devendra K Agrawal
Biceps tendinopathy is a relatively common ailment that typically presents as pain, tenderness, and weakness in the tendon of the long head of the biceps brachii. Though it is often associated with degenerative processes of the rotator cuff and the joint, this is not always the case, thus, the etiology remains considerably unknown. There has been recent interest in elucidating the pathogenesis of tendinopathy, since it can be an agent of chronic pain, and is difficult to manage. The purpose of this article is to critically evaluate relevant published research that reflects the current understanding of pain and how it relates to biceps tendinopathy...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28669468/editorial-commentary-when-you-have-a-hammer-everything-looks-like-a-nail-tenodesis-of-a-normal-biceps-tendon-at-the-time-of-arthroscopic-rotator-cuff-repair-should-be-avoided
#20
EDITORIAL
Brian B Gilmer
Because of difficulties in diagnosis of pathology of the long head of the biceps tendon and a desire to prevent later complications, there may be a tendency to perform a biceps tenodesis even when pathology is mild. Surprisingly, in this multivariate analysis of a large database, tenodesis of the biceps was associated with increased odds of revision rotator cuff repair. Although the statistical power of these findings must be viewed in light of the limitations of "big data," surgeons must still use all available tools to avoid treatment of normal anatomy...
July 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
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