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https://www.readbyqxmd.com/read/30469105/compensatory-strategy-for-ankle-dorsiflexion-muscle-weakness-during-gait-in-patients-with-drop-foot
#1
Michalina Błażkiewicz, Andrzej Wit
BACKGROUND: Pathological movement patterns are characterized by abnormal kinematics, kinetics and muscle activations that alter the distribution of muscle forces during walking. AIM: The objective of this study was to identify what compensatory strategy is evident in muscle force distribution in patients with drop-foot, in response to weakness in the dorsiflexor muscles. METHODS: A sample of 10 patients with drop-foot were evaluated by a computerized gait analysis system and compared to a group of 10 healthy subjects...
November 13, 2018: Gait & Posture
https://www.readbyqxmd.com/read/30451406/the-diagnosis-and-management-of-shoulder-pain
#2
Gina M Allen
Diagnosis is crucial in decision-making when treating a patient with shoulder pain. Ultrasound is also very important in the diagnostic and therapeutic pathway, especially when surgery is being considered. This article outlines the diagnostic pathway using the patient's history, physical examination and ultrasound examination. It is important to correlate the clinical assessment with the imaging signs. It is also important to treat the patient and not the images as there may be abnormalities detected on imaging that are not symptomatic...
2018: Journal of Ultrasonography
https://www.readbyqxmd.com/read/30446788/shoulder-manipulation-under-targeted-ultrasound-guided-rotator-interval-block-for-adhesive-capsulitis
#3
David McKean, Philip Yoong, Rebecca Brooks, Joseph Papanikitas, Richard Hughes, Aniruddha Pendse, Bernard John McElroy
OBJECTIVE: To describe and evaluate the outcome following shoulder manipulation under rotator interval block for the treatment of adhesive capsulitis. MATERIALS AND METHODS: Patients with adhesive capsulitis referred by our local orthopaedic shoulder surgeons consented to targeted ultrasound-guided injection of the glenohumeral joint via the rotator interval. Inclusion criteria included a failure to respond to conservative treatment and the absence of a full-thickness rotator cuff tear...
November 16, 2018: Skeletal Radiology
https://www.readbyqxmd.com/read/30441617/non-invasive-detection-of-low-level-muscle-fatigue-using-surface-emg-with-wavelet-decomposition
#4
Guangyi Zhang, Evelyn Morin, Yaoxue Zhang, S Ali Etemad
Median frequency (MDF) is widely used for detection and tracking of muscle fatigue using surface electromyography (sEMG). However, MDF does not behave consistently or accurately distinguish fatigued from non-fatigued states. In this paper, we study the concept of low-level fatigue and propose increasing average ratio (IAR) and trigger pattern index (TPI) based on discrete wavelet transform (DWT) for distinguishing low-level muscle fatigue. We recorded sEMG using an 8-electode linear monopolar array during isometric contractions from brachioradialis (BRD), biceps brachii long head (BBL), and biceps brachii short head (BBS) muscles of different subjects when performing force exertion...
July 2018: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/30428802/simultaneous-phrenic-and-intercostal-nerves-transfer-for-elbow-flexion-and-extension-in-total-brachial-plexus-root-avulsion-injury
#5
Kanchai Malungpaishope, Somsak Leechavengvongs, Patamaporn Ratchawatana, Akaradech Pitakveerakul, Sarun Jindahara, Chairoj Uerpairojkit, Dechporn Putthiwara, Navapong Anantavorasakul, Valerie Huali Tan
BACKGROUND: To report the results of restoring the elbow flexion and extension in patients with total brachial root avulsion injuries by simultaneous transfer of the phrenic nerve to the nerve to the biceps and three intercostal nerves to the nerve of the long head of the triceps. METHODS: Ten patients with total brachial root avulsion injuries underwent the spinal accessory nerve transfer to the suprascapular nerve for shoulder reconstruction. Simultaneous transfer of the phrenic nerve to the nerve to the biceps via the sural nerve graft and three intercostal nerves to the nerve of the long head of the triceps was done for restoration of the elbow flexion and extension...
December 2018: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/30419172/biceps-detachment-preserves-joint-function-in-a-chronic-massive-rotator-cuff-tear-rat-model
#6
Mengcun Chen, Snehal S Shetye, Julianne Huegel, Corinne N Riggin, Daniel J Gittings, Courtney A Nuss, Stephanie N Weiss, Andrew F Kuntz, Louis J Soslowsky
BACKGROUND: Lesions of the long head of the biceps tendon are often associated with massive rotator cuff tears (MRCTs), and biceps tenotomy is frequently performed for pain relief and functional reservation. However, the efficacy and safety of biceps tenotomy regarding the effects on the surrounding tissues in chronic MRCT are unclear. HYPOTHESIS: Biceps tenotomy would result in improved mechanical and histological properties of the intact subscapularis tendon and improved in vivo shoulder function while not compromising glenoid cartilage properties...
December 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/30402690/-osteosynthesis-of-bicondylar-tibial-plateau-fracture-in-a-prone-position-video-article
#7
REVIEW
M Krause, K-H Frosch
OBJECTIVE: The aim of the surgical treatment of intra-articular bicondylar tibial plateau fractures is the anatomical reconstruction and direct biomechanical optimal fixation of the fractured articular surface and the leg axis, taking the frequently associated soft tissue damage into account. INDICATIONS: This article presents a cadaver model of a simulated complex bicondylar tibial plateau fracture 41C3 according to the AO classification with fracture involvement of all 10 segments and indications for surgery due to a posteromedial shearing fracture and lateral articular destruction with posterolaterocentral impaction...
November 6, 2018: Der Unfallchirurg
https://www.readbyqxmd.com/read/30363038/progressive-workload-periodization-maximizes-effects-of-nordic-hamstring-exercise-on-muscle-injury-risk-factors
#8
Lucas Severo-Silveira, Maurício P Dornelles, Felipe X Lima-E-Silva, César L Marchiori, Thales M Medeiros, Evangelos Pappas, Bruno M Baroni
Severo-Silveira, L, Dornelles, MP, Lima-e-Silva, FX, Marchiori, CL, Medeiros, TM, Pappas, E, and Baroni, BM. Progressive workload periodization maximizes effects of Nordic hamstring exercise on muscle injury risk factors. J Strength Cond Res XX(X): 000-000, 2018-This study aimed to investigate the effect of 2 different Nordic hamstring exercise (NHE) training programs (constant workload vs. progressive workload) on multiple risk factors for hamstring strain injury in high competitive level athletes. Twenty-one premier league rugby union players (∼26 years) were randomized into 1 of 2 experimental groups and completed an 8-week NHE training program: constant training group (CTG) or progressive training group (PTG)...
October 22, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30349357/ultrasound-guided-interventions-for-painful-shoulder-from-anatomy-to-evidence
#9
REVIEW
Ke-Vin Chang, Kamal Mezian, Ondřej Naňka, Wei-Ting Wu, Chih-Peng Lin, Levent Özçakar
Shoulder pain is a common musculoskeletal disorder of variable etiology, ranging from rotator cuff pathology to peripheral nerve entrapment. Advances in ultrasound (US) technology have allowed static and dynamic evaluation of shoulder problems and most importantly, offer real-time, radiation-free guidance for interventions. The present review aims to describe shoulder anatomy in detail using information from cadaveric models and to illustrate US-guided techniques using clearly labeled figures and videos. The review will also present evidence of specific US-guided therapies for shoulder pain by summarizing landmark studies, systematic reviews, and meta-analyses...
2018: Journal of Pain Research
https://www.readbyqxmd.com/read/30326526/biceps-tendon-changes-in-youth-softball-pitchers-following-an-acute-bout-of-pitching
#10
Jeff W Barfield, Hillary A Plummer, Adam W Anz, James R Andrews, Gretchen D Oliver
Because pitch counts do not exist for softball, pitchers may throw between 1200 and 1500 pitches over 3-day tournaments. With this workload, a common symptom among softball pitchers is anterior shoulder pain. The purpose of this study was to examine long-head biceps tendon (LHBT) changes in youth softball pitchers following an acute bout of pitching. Nineteen softball pitchers (11.89±1.2 years; 158.23±9.71 cm; 61.59±14.76 kg) participated. Images of the LHBT were obtained prior to and immediately following a simulated game protocol...
October 16, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/30310840/inferior-shoulder-dislocation-after-shortening-osteotomy-of-the-humerus-a-case-report
#11
M Ceynowa, M Treder, F Dąbrowski, M Piotrowski, R Pankowski, M Rocławski
We present a case of a post-surgical complete dislocation after excessive proximal humeral shortening osteotomy performed in a patient operated on for atrophic non-union of a proximal humeral fracture. This complication has not been previously reported. The dislocation occurred due to extensive laxity of the soft tissue envelope, predominantly the deltoid muscle, as well as rotator cuff tear. The reconstructive procedurę consisted of vertical duplication of the capsule, reinforcement of the repair with coracoacromial ligament, tenodesis of the long head of the biceps tendon to the conjoined tendon and distal transfer of the deltoid muscle...
October 2018: Trauma Case Reports
https://www.readbyqxmd.com/read/30284028/antagonist-muscle-architecture-and-aponeurosis-tendon-strain-of-biceps-femoris-long-head-during-maximal-isometric-efforts
#12
Eleftherios Kellis
INTRODUCTION: Examination of the mechanical behavior of the hamstrings when acting as antagonists provides information about loading of this muscle group and its role for joint stability during forceful quadriceps contractions. The aim of this study was to quantify biceps femoris long head fascicle length (FL), angle of pennation (PA) and distal tendon/aponeurosis strain during maximum voluntary contraction efforts of the knee extensors using real-time ultrasound. METHODS: Fourteen participants performed passive joint movements and maximum voluntary knee extension and flexion efforts of the knee flexors at 0°, 45° and 90° of knee flexion...
October 3, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/30274549/effect-of-exercise-order-with-barbell-and-machine-modalities-on-upper-body-volume-load-and-myoelectric-activity
#13
Ewertton S Bezerra, Brad J Schoenfeld, Gabriel Paz, Déborah de Araújo Farias, Raphael L Sakugawa, Iago Vieira, Mateus Rossato, Humberto Miranda
The purpose of this study was to investigate the influence of exercise order on volume load (VL) and myoelectric activation (EMG) during the bench press (BP), military press (MP) and close-grip bench press (CGBP) exercises executed with a barbell and Smith machine. Twelve men experienced in resistance training performed four different exercise sessions in randomised order. Each session consisted of four sets of a given exercise order: O1 = CGBP + MP + BP with barbell; O2 = inverse O1 with barbell, O3 = same O1 with Smith Machine; O4 = same O2 with Smith machine...
October 2, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/30271783/distal-pullout-strengths-of-the-biceps-long-head-tendon-for-different-adjacent-tissue-and-tendon-pathologies-during-rotator-cuff-repair
#14
Young Jun Kim, Ohhyo Kwon, Hwa-Ryeong Lee, Sae Hoon Kim
Purpose. Pathologies of the long head of the biceps tendon (LHBT) are frequently recognized in cases of rotator cuff tear. Recommendations for managing such pathologies remain debatable, and distal migration of tenotomized biceps is always a concern when only tenotomy is performed. Methods. Seventy patients of mean age 60.4 ± 6.9 years (range: 44 to 82 years) were included in this retrospective study. During subpectoral tenodesis in rotator cuff repair, pullout tensions were measured using a digital tensiometer...
2018: BioMed Research International
https://www.readbyqxmd.com/read/30267195/collagen-type-iii-content-of-the-long-head-of-the-biceps-tendon-as-an-indicator-of-glenohumeral-arthritis
#15
Finosh G Thankam, Daugherty K Evan, Devendra K Agrawal, Matthew F Dilisio
Tendonosis is characterized by an increase in collagen type III relative to collagen type I, but the precise ratio of collagen type I to collagen type III in pathologic shoulder tendons has not been reported. A tendon continuously bathed in an OA synovial environment may exhibit histomorphologic differences as compared to those from shoulders with a preserved articular surface. The purpose of this study was to evaluate the biochemical and histological differences in the proximal portion of the long head of the biceps tendon (LHBT) from a non-arthritic versus an arthritic glenohumeral joint...
September 28, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/30265870/between-muscle-differences-in-coactivation-assessed-using-elastography
#16
Simon Avrillon, François Hug, Gaël Guilhem
PURPOSE: This study aimed to assess muscle coactivation in quadriceps and hamstring muscles using ultrasound shear wave elastography. METHODS: During maximal voluntary isometric contractions (MVC), both myoelectrical activity and shear modulus of antagonist muscles were measured (i.e., rectus femoris, vastus lateralis and vastus medialis during knee flexions and semitendinosus, semimembranosus and biceps femoris long head during knee extensions). To account for changes induced by inevitable joint rotation during MVC, the shear modulus values were compared to those measured at the same knee angle during a passive cycle...
December 2018: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/30253987/management-of-massive-rotator-cuff-tears-prospective-study-in-218-patients
#17
Maxime Cavalier, Stéphane Jullion, Jean Kany, Jean Grimberg, Yves Lefebvre, Didier Oudet, Sophie Grosclaude, Christophe Charousset, Pascal Boileau, Thierry Joudet, Nicolas Bonnevialle
BACKGROUND: No consensus exists about the management of massive and symptomatic rotator cuff tears (RCTs). The objective of this study was to compare the 12-month clinical outcomes of various treatment options for massive RCTs. HYPOTHESIS: Arthroscopic surgery has a role to play in the treatment of massive and apparently irreparable RCTs. MATERIAL AND METHODS: A prospective multicentre non-randomised study was performed in patients with massive RCTs managed non-operatively (NONOP) or by arthroscopic tenotomy/tenodesis of the long head of biceps (aTLB), arthroscopic partial tendon repair (aPTR), arthroscopic latissimus dorsi transfer (aLDT), or reverse shoulder arthroplasty (RSA)...
September 22, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/30233967/distal-biceps-tendon-anatomic-repair
#18
Christopher C Schmidt, Joseph F Styron, Edward A Lin, Brandon T Brown
Distal biceps injuries, which usually occur in active middle-aged men, can result in chronic pain and loss of supination and flexion strength3 ,4 . Surgical repair of a ruptured distal biceps tendon can reliably decrease pain and improve strength compared with nonoperative management3 ,4 . However, even following successful healing and rehabilitation of a surgically repaired biceps tendon, full supination strength is rarely restored5 -7 . The expected outcome following distal biceps repair using a traditional anterior approach is a measurable loss of rotational strength, especially from neutral to supinated positions5 ,7 ...
December 28, 2017: JBJS Essential Surgical Techniques
https://www.readbyqxmd.com/read/30233954/arthroscopic-tenodesis-of-the-long-head-of-the-biceps-tendon
#19
Yang-Soo Kim, Jin-Young Jeong, Hyo-Jin Lee
Lesions of the long head of the biceps brachii tendon (LHBT) are a common source of shoulder pain and dysfunction. Although the exact role of the LHBT in shoulder biomechanics is not clearly understood, pathological involvement of this tendon is a well-known pain generator and frequently the clinical presentation consists of both anterior pain and flexion loss. The initial treatment for lesions of the LHBT should be nonoperative, but if that fails or if the LHBT lesion is combined with rotator cuff lesions or other lesions that need to be repaired surgically, surgical intervention is indicated...
September 28, 2017: JBJS Essential Surgical Techniques
https://www.readbyqxmd.com/read/30230042/high-density-electromyography-activity-in-various-hamstring-exercises
#20
András Hegyi, Dániel Csala, Annamária Péter, Taija Finni, Neil J Cronin
Proximal-distal differences in muscle activity are rarely considered when defining the activity level of hamstring muscles. The aim of this study was to determine the inter-muscular and proximal-distal electromyography (EMG) activity patterns of hamstring muscles during common hamstring exercises. Nineteen amateur athletes without a history of hamstring injury performed 9 exercises, while EMG activity was recorded along the biceps femoris long head (BFlh) and semitendinosus (ST) muscles using 15-channel high-density electromyography (HD-EMG) electrodes...
September 19, 2018: Scandinavian Journal of Medicine & Science in Sports
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