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Biceps Tendon

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https://www.readbyqxmd.com/read/29776820/mechanical-interaction-between-neighboring-muscles-in-human-upper-limb-evidence-for-epimuscular-myofascial-force-transmission-in-humans
#1
Yasuhide Yoshitake, Daiki Uchida, Kosuke Hirata, Dean L Mayfield, Hiroaki Kanehisa
To confirm the existence of epimuscular myofascial force transmission in humans, this study examined if manipulating joint angle to stretch the muscle can alter the shear modulus of a resting adjacent muscle, and whether there are regional differences in this response. The biceps brachii (BB: manipulated muscle) and the brachialis (BRA: resting adjacent muscle) were deemed suitable for this study because they are neighboring, yet have independent tendons that insert onto different bones. In order to manipulate the muscle length of BB only, the forearm was passively set at supination, neutral, and pronation positions...
May 3, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29770180/factors-impacting-arthroscopic-rotator-cuff-repair-operational-throughput-time-at-an-ambulatory-care-center
#2
Emily J Curry, Catherine Logan, Kaytelin Suslavich, Kaitlyn Whitlock, Eric Berkson, Elizabeth Matzkin
Identifying patient factors influencing operational throughput time is becoming more imperative due to an increasing focus on value and cost savings in healthcare. The primary objective of this study was to determine patient factors influencing throughput time for primary rotator cuff repairs. Demographic information, medical history and operative reports of 318 patients from one ambulatory care center were retrospectively reviewed. Operating room set up, incision to closure and recovery room time were collected from anesthesia records...
March 29, 2018: Orthopedic Reviews
https://www.readbyqxmd.com/read/29768337/variation-in-origin-of-the-long-head-of-the-biceps-brachii-tendon-in-a-cadaver-a-case-report
#3
Shuji Katsuki, Hayato Terayama, Ryuta Tanaka, Ning Qu, Osamu Tanaka, Kanae Umemoto, Kaori Suyama, Kou Sakabe
INTRODUCTION: In general, the long head of the biceps brachii (LHB) tendon arises from the supraglenoid tubercle in the shoulder joint, and it has an important stabilizing mechanism for the humeral head in the shoulder joint. This case demonstrates that even if the LHB tendon can be palpated outside of the shoulder joint, it may disappear in the intertubercular sulcus (IS) and in the glenohumeral (GH) joint because of abnormal articulation. PATIENT CONCERNS: This case involved the cadaver of an 82-year-old Japanese man (number 1936, cause of death: hepatocellular tumor), who was selected from the bodies used for gross anatomy practice at the Tokai University School of Medicine in 2017...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29767346/biomechanical-properties-of-suprapectoral-biceps-tenodesis-double-knotless-screw-fixation-is-superior-to-single-knotless-screw-fixation
#4
Chih-Kai Hong, Chih-Hsun Chang, Florence L Chiang, I-Ming Jou, Ping-Hui Wang, Hung-Nan Wang, Kai-Lan Hsu, Fa-Chuan Kuan, Wei-Ren Su
INTRODUCTION: The purpose of this study is to biomechanically evaluate a new technique of double knotless screw fixation for suprapectoral biceps tenodesis and compare the results with that of the single knotless screw fixation as well as the interference screw fixation. METHODS: 24 fresh-frozen human cadaveric shoulders with a mean age of 68.3 ± 9 years were studied. The specimens were randomly divided into three experimental biceps tenodesis groups (n = 8): single knotless screw, double knotless screw and interference screw...
May 16, 2018: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29757663/bicipital-tendinopathy-and-carpal-valgus-following-a-distant-direct-thoracoabdominal-skin-flap-in-a-german-shepherd-with-necrotizing-fasciitis
#5
Benjamin Mielke, Nicola Kulendra, Zoe Halfacree, Elvin Kulendra
A 4 mo old German shepherd dog was presented following an acute onset lameness and swelling of the thoracic limb. Clinical signs, surgical findings, and culture results were consistent with a diagnosis of necrotizing fasciitis. Initial management consisted of extensive surgical debridement, wound lavage, and bandaging. Surgical closure was achieved with an axillary fold flap and distant direct single-pedicle thoracoabdominal flap. Three mo later, following deterioration of the lameness that was associated with carpal valgus, carpal subluxation, and tendinopathy of the distal radial insertion of the biceps brachii tendon, a closing wedge pancarpal arthrodesis and tenotomy of the biceps brachii tendon was performed...
May 14, 2018: Journal of the American Animal Hospital Association
https://www.readbyqxmd.com/read/29730686/evaluation-of-tendinosis-of-the-long-head-of-the-biceps-tendon-by-strain-and-shear-wave-elastography
#6
Mehmet Hamdi Sahan, Mikail Inal, Veysel Burulday, Turgut Kultur
AIM: To investigate strain (SE) and shear wave elastography (SWE) characteristics of the long head of the biceps tendon (LHBT) tendinosis in comparison with magnetic resonance imaging (MRI) findings. MATERIAL AND METHODS: Twenty patients with a MRI diagnosis of tendinosis and twenty healthy subjects with normal LHBT in MRI were prospectively examined by SE and SWE. SE color mapping was divided into four types in accordance with elasticity designs: type I predominantly blue (hardest tissue), type II predominantly blue-green (hard tissue), type III predominantly green (intermediate tissue), type IV predominantly green-yellow-red (soft tissue)...
May 2, 2018: Medical Ultrasonography
https://www.readbyqxmd.com/read/29730466/development-of-the-long-head-of-the-biceps-brachial-tendon-a-possible-explanation-of-the-anatomical-variations
#7
Jorge Murillo-González, Crótida De La Cuadra-Blanco, Luis-A Arráez-Aybar, Manuel-E Herrera-Lara, Alvaro Minuesa-Asensio, José Ramón Mérida-Velasco
The anatomical variations of the proximal portion of the long head of the biceps brachii tendon (LHBT) are rarely observed in clinical practice. However, an increase in the rate of shoulder arthroscopic surgery has led to an increase in the observation of anatomical variations of this region. The aim of this work was to analyze the development of the LHBT in 23 human embryos ranging from the 6th to 8th weeks of development. The LHBT develops from the glenohumeral interzonal mesenchyme in the 6th week. By week 7, the myotendinous junction of the LHBT develops...
May 3, 2018: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29696497/cerebellar-ataxia-neuropathy-vestibular-areflexia-syndrome-canvas-with-chronic-cough-and-preserved-muscle-stretch-reflexes-evidence-for-selective-sparing-of-afferent-ia-fibres
#8
Jon Infante, Antonio García, Karla M Serrano-Cárdenas, Rocío González-Aguado, José Gazulla, Enrique M de Lucas, José Berciano
The aim of this study was to describe five patients with cerebellar ataxia, neuropathy and vestibular areflexia syndrome (CANVAS) with chronic cough and preserved limb muscle stretch reflexes. All five patients were in the seventh decade of age, their gait imbalance having been initiated in the fifth decade. In four patients cough antedated gait imbalance between 15 and 29 years; cough was spasmodic and triggered by variable factors. Established clinical picture included severe hypopallesthesia predominating in the lower limbs with postural imbalance, and variable degree of cerebellar axial and appendicular ataxia, dysarthria and horizontal gaze-evoked nystagmus...
April 25, 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29680434/persistence-of-deep-tendon-reflexes-during-partial-cataplexy
#9
Lucie Barateau, Fabio Pizza, Régis Lopez, Elena Antelmi, Giuseppe Plazzi, Yves Dauvilliers
OBJECTIVE: Deep-tendon reflexes are abolished during generalized cataplexy, but whether this is the case in partial cataplexy currently remains unknown. Partial cataplexy may mimic other neurologic/psychiatric phenomena, and knowledge of the reflexes status may provide information for differential diagnosis. We assessed whether deep-tendon reflexes are persistent during partial cataplexy. METHODS: Five drug-free patients with typical diagnoses of narcolepsy and clear-cut partial cataplexy were diagnosed in Reference Narcolepsy Centers in France and Italy...
May 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29679723/comparison-of-hook-plate-with-versus-without-double-tunnel-coracoclavicular-ligament-reconstruction-for-repair-of-acute-acromioclavicular-joint-dislocations-a-prospective-randomized-controlled-clinical-trial
#10
Jian Yin, Zhaoyang Yin, Ge Gong, Chao Zhu, Chao Sun, Xinhui Liu
PURPOSE: This study was designed to compare the surgical outcomes of a hook plate with double-tunnel coracoclavicular (CC) ligament reconstruction by conjoined tendon transfer versus single hook plate surgery for the repair of acute type of Rockwood type III and V acromioclavicular (AC) joint dislocations. METHODS: The study cohort included 62 patients with acute (within 6 weeks after trauma) Rockwood type III and V AC joint dislocations who underwent surgery from February 2012 to September 2015...
April 18, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29657436/upper-extremity-weightlifting-injuries-diagnosis-and-management
#11
REVIEW
Kayvon Golshani, Mark E Cinque, Peter O'Halloran, Kenneth Softness, Laura Keeling, J Ryan Macdonell
Common upper extremity injuries in resistance training athletes include muscle strains, ligament sprains, pectoralis major tendon ruptures, distal biceps tendon ruptures, and chronic shoulder pain and capsulolabral injuries. While each injury is unique in its specific anatomic location and mechanism, each is preventable with proper exercise technique, safety and maintenance of muscle balance. Conservative treatment is the therapeutic modality of choice and these injuries generally resolve with workout modification, appropriate recovery, anti-inflammatory medication, and physical therapy...
March 2018: Journal of Orthopaedics
https://www.readbyqxmd.com/read/29656809/lateral-knee-compartment-portals-a-cadaveric-study-defining-a-posterolateral-viewing-safety-zone
#12
Brian Dilworth, Victor Fehrenbacher, John Nyland, Jamie Clark, Joseph W Greene
PURPOSE: This study attempted to define a reproducible "safe zone" based on extra- and intra-articular knee anatomy for placing one or 2 accessory portals in the lateral tibiofemoral compartment for posterolateral region viewing. METHODS: Standard portals were created in 10 cadaveric knees to enable posterolateral region arthroscopic lateral tibiofemoral joint compartment viewing. After identifying the lateral knee surface tissue "soft spot," an accessory posterolateral portal (A) was created using an 18-gauge spinal needle and 4-mm cannula under direct visualization of a 70° arthroscope through the anteromedial portal...
April 12, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29622263/editorial-commentary-is-the-biceps-tendon-a-valid-option-for-augmentation-in-rotator-cuff-repair-future-perspectives-on-superior-capsule-reconstruction
#13
EDITORIAL
Giuseppe Milano
Biceps autograft can be a viable option for biological augmentation of massive rotator cuff repair, albeit results of this procedure might depend on the surgical technique. In the present qualitative systematic review, 8 case series were analyzed, in which biceps autograft was used as a scaffold or tissue bridge. Indeed, leaving the proximal portion intact and fixing it onto the greater tuberosity can simulate a superior capsule reconstruction, with potentially high biologic and mechanical advantages.
April 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29622253/editorial-commentary-popeye-deformity-after-spontaneous-proximal-biceps-tendon-rupture-image-treat-or-ignore
#14
EDITORIAL
Eric Seth Millstein
We have long been accustomed to treat proximal biceps tendon ruptures with reassurance unless the patient cannot accept the resulting "Popeye" deformity. A recent study hypothesizes that these patients deserve a magnetic resonance imaging scan to identify associated rotator cuff pathology, specifically supraspinatus and subscapularis tendon tears. The authors of this study ask an important question and provide a compelling, if incomplete, answer.
April 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29618652/the-metalloproteinase-proteoglycans-adamts7-and-adamts12-provide-an-innate-tendon-specific-protective-mechanism-against-heterotopic-ossification
#15
Timothy J Mead, Daniel R McCulloch, Jason C Ho, Yaoyao Du, Sheila M Adams, David E Birk, Suneel S Apte
Heterotopic ossification (HO) is a significant clinical problem with incompletely resolved mechanisms. Here, the secreted metalloproteinases ADAMTS7 and ADAMTS12 are shown to comprise a unique proteoglycan class that protects against a tendency toward HO in mouse hindlimb tendons, menisci, and ligaments. Adamts7 and Adamts12 mRNAs were sparsely expressed in murine forelimbs but strongly coexpressed in hindlimb tendons, skeletal muscle, ligaments, and meniscal fibrocartilage. Adamts7-/- Adamts12-/- mice, but not corresponding single-gene mutants, which demonstrated compensatory upregulation of the intact homolog mRNA, developed progressive HO in these tissues after 4 months of age...
April 5, 2018: JCI Insight
https://www.readbyqxmd.com/read/29599968/partial-avulsion-of-the-ulnaris-lateralis-and-enthesiopathy-of-the-lateral-epicondyle-of-the-humerus-in-a-thoroughbred-race-horse
#16
Neal Ashton
Background: There is relatively little literature on elbow disease in the horse. The only published reports on soft tissue conditions describe collateral ligament and biceps brachii injuries. Case presentation: A three-year old Thoroughbred gelding presented with a history of acute onset right forelimb lameness of less than one week duration, one month after commencing training in a National Hunt racing yard. Physical examination and peri-neural anaesthesia failed to localise the lesion...
2018: Irish Veterinary Journal
https://www.readbyqxmd.com/read/29599041/between-day-reliability-of-myotonpro-for-the-non-invasive-measurement-of-muscle-material-properties-in-the-lower-extremities-of-patients-with-a-chronic-spinal-cord-injury
#17
Chang-Yong Ko, Hyuk-Jae Choi, Jeicheong Ryu, Gyoosuk Kim
Measuring the muscle properties of patients with spinal cord injuries (SCIs) is important to better understand their biomechanical features. In this study, we sought to evaluate the between-day reliability of MyotonPRO, a handheld device that can measure muscle mechanical properties, and assess whether it is reliable to measure muscle properties over time in patients with SCI. Thirteen men with complete SCIs (age 53.9 ± 6.3 years, height 171.0 ± 5.2 cm, weight 66.1 ± 5.8 kg), and injury levels ranging from L1 to T12, were enrolled...
March 17, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29593980/anatomic-posterolateral-corner-reconstruction-with-autografts
#18
Carlos Eduardo Franciozi, Leonardo José Bernardes Albertoni, Guilherme Conforto Gracitelli, Fernando Cury Rezende, Luiz Felipe Ambra, Fábio Pacheco Ferreira, Marcelo Seiji Kubota, Sheila Jean McNeil Ingham, Marcus Vinícius Malheiros Luzo, Moisés Cohen, Rene Jorge Abdalla
Anatomic posterolateral corner reconstruction reproduces 3 main structures: the lateral collateral ligament, the popliteofibular ligament, and the popliteus tendon. The LaPrade technique reproduces all 3 main stabilizers. However, it requires a long graft, limiting its indication to clinical settings in which allograft tissue is available. We propose a surgical procedure that is a modification of the LaPrade technique using the same tunnel placement, hamstring autografts, and biceps augmentation when necessary...
February 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29573932/radiologic-and-histologic-evaluation-of-proximal-bicep-pathology-in-patients-with-chronic-biceps-tendinopathy-undergoing-open-subpectoral-biceps-tenodesis
#19
Clayton W Nuelle, Derek C Stokes, Keiichi Kuroki, Julia R Crim, Seth L Sherman
PURPOSE: To correlate preoperative magnetic resonance imaging (MRI) and intraoperative anatomic findings within the proximal long head biceps tendon to histologic evaluation of 3 separate zones of the tendon in patients with chronic biceps tendinopathy. METHODS: Sixteen patients with chronic biceps tendinopathy were treated with open subpectoral biceps tenodesis. Preoperative MRI tendon grading was as follows: normal tendon, increased signal, tendon splitting, incomplete/complete tear...
March 21, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29567036/fibrocartilaginous-metaplasia-identified-in-the-long-head-of-the-biceps-brachii
#20
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
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