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https://www.readbyqxmd.com/read/29223630/postoperative-loss-of-midline-function-in-brachial-plexus-birth-palsy
#1
Dustin A Greenhill, Arianna Trionfo, Frederick V Ramsey, Scott H Kozin, Dan A Zlotolow
PURPOSE: To identify the rate of and predictive variables for functionally limited shoulder internal rotation in postoperative patients with brachial plexus birth palsy. METHODS: Records of patients with brachial plexus birth palsy who had surgery on the affected upper extremity during a 10-year period were retrospectively reviewed. Patient demographics, physical examinations, and all upper extremity procedures were recorded. Loss of midline function (LOM) was defined as a Modified Mallet Scale or Active Movement Scale (AMS) internal rotation score <3...
December 6, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29223629/a-new-clinical-sign-of-lumbrical-plus%C3%A2-finger
#2
Frédéric A Schuind, Fabian Moungondo, Pierre Van Wetter
Paradoxical finger extension is the classical clinical presentation of the lumbrical plus syndrome. We report a new additional sign, increased metacarpophalangeal flexion of the involved finger when the patient tries to make a fist. Three cases of lumbrical tightness are discussed, illustrating this new sign in 3 different clinical settings. The new sign was present in all 3 cases. Lumbrical tenotomy corrected the paradoxical interphalangeal extension and partly the increased metacarpophalangeal flexion. The lumbrical tendon has a relatively high moment arm relative to the metacarpophalangeal joint, which could explain the basis of this clinical sign...
December 6, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29223409/obtaining-adequate-tension-for-extensor-hallucis-longus-tendon-rupture-repair-using-wide-awake-surgery-a-case-report
#3
Takenori Matsuda, Akira Taniguchi, Koji Hayashi, Yasuaki Nakanishi, Yasuhito Tanaka
Wide-awake surgery has potential advantages for treating extensor or flexor tendon injury. We present a case of chronic extensor hallucis longus injury treated with turn-down reconstruction using wide-awake surgery with a selective nerve block. To the best of our knowledge, this is the first such case reported. The patient had dropped a knife proximal to the right hallux metatarsophalangeal joint. Because direct suturing was thought to be difficult, turn-down reconstruction was performed under a selective nerve block...
December 7, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29223017/biceps-femoris-fascicle-length-during-passive-stretching
#4
Eleftherios Kellis
The purpose of this study was to quantify the relative changes in fascicle (FL) and muscle-tendon unit (LMTU) length of the long head of the biceps femoris (BFlh) at different combinations of hip and knee joint positions. Fourteen participants performed passive knee extension trials from 0°, 45° and 90° of hip flexion. FL, LMTU, pennation angle (PA) and effective FL (FL multiplied by the cosine of the PA) of the BFlh were quantified using ultrasonography (US). Three-way analysis of variance designs indicated that at each hip angle, FL and LMTU increased and PA decreased from 90° to 0° of knee flexion...
December 5, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29222527/the-chemokines-cxcl12-and-cxcl14-differentially-regulate-connective-tissue-markers-during-limb-development
#5
Sonya Nassari, Cédrine Blavet, Marie-Ange Bonnin, Sigmar Stricker, Delphine Duprez, Claire Fournier-Thibault
Connective tissues (CT) support and connect organs together. Understanding the formation of CT is important, as CT deregulation leads to fibrosis. The identification of CT specific markers has contributed to a better understanding of CT function during development. In developing limbs, Osr1 transcription factor is involved in the differentiation of irregular CT while the transcription factor Scx labels tendon. In this study, we show that the CXCL12 and CXCL14 chemokines display distinct expression pattern in limb CT during chick development...
December 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29220207/mr-imaging-of-muscle-trauma-anatomy-biomechanics-pathophysiology-and-imaging-appearance
#6
Dyan V Flores, Catalina Mejía Gómez, Mauricio Estrada-Castrillón, Edward Smitaman, Mini N Pathria
Muscle is an important component of the muscle-tendon-bone unit, driving skeletal motion through contractions that alter the length of the muscle. The muscle and myotendinous junction (MTJ) are most commonly injured in the young adult, as a result of indirect mechanisms such as overuse or stretching, direct impact (penetrating or nonpenetrating), or dysfunction of the supporting connective tissues. Magnetic resonance (MR) imaging is widely used for assessment of muscle injuries. This review illustrates the MR imaging appearance of a broad spectrum of acute, subacute, and chronic traumatic lesions of muscle, highlighting the pathophysiology, biomechanics, and anatomic considerations underlying these lesions...
December 8, 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29219884/abduction-in-proximal-hamstring-tendon-avulsion-injury-mechanism-a-report-on-3-athletes
#7
Anne D van der Made, Rolf W Peters, Claire Verheul, Mario Maas, Gino M Kerkhoffs
Proximal hamstring tendon avulsions are typically sustained during forced hip hyperflexion combined with knee extension. We present 3 cases of athletes with a proximal hamstring tendon avulsion caused by an alternative injury mechanism that also involves a considerable hip abduction component (flexion-abduction injury mechanism). All cases had at least one concurrent injury of the medial thigh muscles, either on the ipsilateral or contralateral side. The 2 elite athletes with this injury mechanism returned to sport at preinjury level relatively quickly...
December 1, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/29219514/second-harmonic-generation-of-unpolarized-light
#8
Changqin Ding, James R W Ulcickas, Fengyuan Deng, Garth J Simpson
A Mueller tensor mathematical framework was applied for predicting and interpreting the second harmonic generation (SHG) produced with an unpolarized fundamental beam. In deep tissue imaging through SHG and multiphoton fluorescence, partial or complete depolarization of the incident light complicates polarization analysis. The proposed framework has the distinct advantage of seamlessly merging the purely polarized theory based on the Jones or Cartesian susceptibility tensors with a more general Mueller tensor framework capable of handling partial depolarized fundamental and/or SHG produced...
November 10, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29219218/rotator-cuff-tendon-assessment-using-magic-angle-insensitive-3d-ultrashort-echo-time-cones-magnetization-transfer-ute-cones-mt-imaging-and-modeling-with-histological-correlation
#9
Yanchun Zhu, Xin Cheng, Yajun Ma, Jonathan H Wong, Yaoqin Xie, Jiang Du, Eric Y Chang
BACKGROUND: Rotator cuff tendons (RCTs) are challenging to image due to the "magic angle effect" and their short T2 . PURPOSE: To assess the degree of magic angle sensitivity of human RCTs and to utilize a 3D ultrashort echo time Cones sequence with magnetization transfer preparation (UTE-Cones-MT) and two-pool quantitative MT modeling with histological correlation. We hypothesized that MT parameters would be less sensitive to the magic angle compared with conventional T2 measurements...
December 8, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29218649/treatment-of-flexor-tendon-reconstruction-failures-multicentric-experience-with-brunelli-active-tendon-implant
#10
A Poggetti, M Novi, M Rosati, D Ciclamini, M Scaglione, B Battiston
INTRODUCTION: Secondary repair of flexor tendon injuries remain a challenging procedure for hand surgeons. Usually, secondary reconstruction should be performed by staged approach. When the tendon and pulley integrity are intact, tenolysis may be the first surgical option. One-/two-stage tendon grafts are suggested when the integrity of flexor tendon is compromised. Active tendon implants (Brunelli prostheses) may represent an efficient option in patients with a poor prognosis, as well as whenever classical techniques fail...
December 7, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/29218618/metal-artifact-reduction-mri-of-total-ankle-arthroplasty-implants
#11
Cesar de Cesar Netto, Lucas F Fonseca, Benjamin Fritz, Steven E Stern, Esther Raithel, Mathias Nittka, Lew C Schon, Jan Fritz
OBJECTIVES: To assess high-bandwidth and compressed sensing-(CS)-SEMAC turbo spin echo (TSE) techniques for metal artifact reduction MRI of total ankle arthroplasty (TAA) implants. METHODS: Following institutional approval and consent, 40 subjects with TAA implants underwent 1.5-T MRI prospectively. Evaluations included bone-implant interfaces, anatomical structures, abnormal findings and differential diagnoses before and after MRI. AUCs of P-P plots were used to determine superiority...
December 7, 2017: European Radiology
https://www.readbyqxmd.com/read/29218390/gemelli-obturator-complex-in-the-deep-gluteal-space-an-anatomic-and-dynamic-study
#12
Ramon Balius, Antonio Susín, Carles Morros, Montse Pujol, Dolores Pérez-Cuenca, Xavier Sala-Blanch
OBJECTIVE: To investigate the behavior of the sciatic nerve during hip rotation at subgluteal space. MATERIALS AND METHODS: Sonographic examination (high-resolution ultrasound machine at 5.0-14 MHZ) of the gemelli-obturator internus complex following two approaches: (1) a study on cadavers and (2) a study on healthy volunteers. The cadavers were examined in pronation, pelvis-fixed position by forcing internal and external rotations of the hip with the knee in 90° flexion...
December 7, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/29218364/ultrasound-evaluation-of-stress-injuries-and-physiological-adaptations-in-the-fingers-of-adolescent-competitive-rock-climbers
#13
Kathryn Garcia, Diego Jaramillo, Erika Rubesova
BACKGROUND: The impact of high-intensity, repetitive training on the fingers of adolescent climbers is relatively unknown. OBJECTIVE: To evaluate this effect by ultrasound (US) and to confirm some findings by magnetic resonance imaging (MRI). MATERIALS AND METHODS: The US study was performed in 20 adolescent rock climbers (ages 10-17 years) and 6 non-climbing controls (ages 11-15 years). US was used to examine the third digit of the right hand for differences in thickness of soft tissue, flexor and extensor tendon, volar plate and bony and growth plate adaptations...
December 7, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/29218229/the-role-of-arthroereisis-of-the-subtalar-joint-for-flatfoot-in-children-and-adults
#14
REVIEW
Alessio Bernasconi, François Lintz, Francesco Sadile
Subtalar arthroereisis has been reported as a minimally-invasive, effective and low-risk procedure in the treatment of flatfoot mainly in children but also in adults.It has been described as a standalone or adjunctive procedure, and is indicated in the treatment of flexible flatfoot, tibialis posterior tendon dysfunction, tarsal coalition and accessory navicular syndrome.Different devices for subtalar arthroereisis are currently used throughout the world associated with soft-tissue and bone procedures, depending on the surgeon rather than on standardised or validated protocols...
November 2017: EFORT Open Reviews
https://www.readbyqxmd.com/read/29217947/coexistence-of-peripheral-spondyloarthritis-and-familial-adenomatous-polyposis-a-rare-case-report-with-treatment-contradictions-and-review-of-the-literature
#15
Berna Urkmez, Muge Kepekci, Sevde Ozer Posul, Aylin Rezvani
Background: The coexistence of familial adenomatous polyposis and spondyloarthritis is rarely defined in literature. The primary aim of this presentation is to report a development of peripheral arthritis in 3 years following colon surgery with the diagnosis of familial adenomatous polyposis (FAP). The secondary aim is to discuss the challenge of in treatment of refractory arthritis, which needs to be treated with biologics. However, it is not yet known well about their safety on patients who have risks for cancer development...
July 2017: Ethiopian Journal of Health Sciences
https://www.readbyqxmd.com/read/29217766/ultrasonographic-scoring-system-for-superficial-digital-flexor-tendon-injuries-in-horses-intra-and-inter-rater-variability
#16
Rafael Alzola Domingo, Chris M Riggs, David S Gardner, Sarah L Freeman
Superficial digital flexor tendon (SDFT) tendinopathy is an important musculoskeletal problem in horses. The study objective was to validate an ultrasonographic scoring system for SDFT injuries. Ultrasonographic images from 14 Thoroughbred racehorses with SDFT lesions (seven core; seven diffuse) and two controls were blindly assessed by five clinicians on two occasions. Ultrasonographic parameters evaluated were: type and extent of the injury, location, echogenicity, cross-sectional area and longitudinal fibre pattern of the maximal injury zone (MIZ)...
December 7, 2017: Veterinary Record
https://www.readbyqxmd.com/read/29217532/imaging-detected-acute-muscle-injuries-in-athletes-participating-in-the-rio-de-janeiro-2016-summer-olympic-games
#17
Michel D Crema, Mohamed Jarraya, Lars Engebretsen, Frank W Roemer, Daichi Hayashi, Romulo Domingues, Abdalla Y Skaf, Ali Guermazi
BACKGROUND: Acute muscle injuries in elite athletes are responsible for a large portion of time loss injuries. AIM: To describe the frequency, the anatomic distribution, and severity of imaging-detected acute muscle injuries among athletes who competed in the Rio de Janeiro 2016 Summer Olympics. METHODS: We recorded all sports injuries reported by the National Olympic Committee medical teams and the Organising Committee medical staff during the 2016 Summer Olympics...
December 7, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29216702/-sonographic-evaluation-of-achilles-tendon-healing-in-tenotomies-for-congenital-clubfoot-and-ponsetis-treatment-a-12-week-follow-up
#18
J G Ríos-Ruiz, D M González-Torres, L A Valdez-Jiménez
OBJECTIVE: The aim of this study was to determine the healing time of Achilles tendon in pediatric patients treated with Achilles tenotomy with the Ponseti method in Shriners Childrens Hospital of Mexico, AC. MATERIAL AND METHODS: Experimental, analytical, prospective, longitudinal study of patients with a diagnosis of idiopathic congenital clubfoot treated with the Ponseti method with serial static and dynamic evaluation by ultrasound in real time with a Siemens Diagnostic Ultrasound System Sonoline 650, linear transducer 10...
May 2017: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/29216699/-diagnostic-value-of-a-predictive-model-for-complete-ruptures-of-the-rotator-cuff-associated-to-subacromial-impingement
#19
I R Águila-Ledesma, J L Córdova-Fonseca, O Medina-Pontaza, D A Núñez-Gómez, C Calvache-García, J M Pérez-Atanasio, R Torres-González
Pathology related to the rotator cuff remains among the most prevalent musculoskeletal diseases. There is an increasing need for imaging studies (MRI, US, arthroscopy) to test the diagnostic performance of the medical history and physical examination. OBJECTIVE: To prove the diagnostic value of a clinical-radiographic predictive model to find complete ruptures of the rotator cuff. MATERIAL AND METHODS: Descriptive, observational, prospective, transversal and analytical study...
May 2017: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/29215729/crosstalk-between-adipose-stem-cells-and-tendon-cells-reveals-a-temporal-regulation-of-tenogenesis-by-matrix-deposition-and-remodeling
#20
Raquel Costa-Almeida, Isabel Calejo, Rui L Reis, Manuela E Gomes
Tendon injuries constitute an unmet clinical challenge owing to the limited intrinsic regenerative ability of this tissue. Cell-based therapies aim at improving tendon healing through the delicate orchestration of tissue rebuilding and regain of function. Hence, human adipose-derived stem cells (hASCs) have been proposed as a promising cell source for boosting tendon regeneration. In this work, we investigated the influence of hASCs on native human tendon-derived cells (hTDCs) through the establishment of a direct contact co-culture system...
December 7, 2017: Journal of Cellular Physiology
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