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https://www.readbyqxmd.com/read/28350557/double-versus-single-tendon-transfers-to-improve-shoulder-function-in-brachial-plexus-birth-palsy
#1
Dustin A Greenhill, William R Smith, F V Ramsey, Scott H Kozin, Dan A Zlotolow
BACKGROUND: In children with brachial plexus birth palsy (BPBP) undergoing tendon transfers to augment shoulder external rotation, it is unclear whether transfer of the latissimus dorsi with its combined latissimus dorsi and teres major (cLT) versus isolated teres major (iTM) tendon transfer yield different outcomes. METHODS: Records of patients with BPBP who underwent shoulder tendon transfers to augment external rotation were retrospectively reviewed. Transfer type (cLT or iTM) was considered indiscriminate by virtue of surgeon preference...
March 27, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28345997/evaluation-of-a-new-method-to-determine-the-tibial-tuberosity-advancement-distance-required-to-reduce-the-patellar-tendon-tibial-plateau-angle-to-90%C3%A2-with-the-modified-maquet-technique-in-dogs
#2
Paul Pillard, Veronique Livet, Quentin Cabon, Camille Bismuth, Juliette Sonet, Denise Remy, Didier Fau, Claude Carozzo, Eric Viguier, Thibaut Cachon
OBJECTIVE To assess use of a new radiographic method to determine the distance by which the tibial tuberosity should be advanced to reduce the patellar tendon-tibial plateau angle (PTA) to 90° by means of the modified Maquet technique (MMT) in dogs. SAMPLE 24 pelvic limbs from 12 adult medium-sized to large-breed canine cadavers. PROCEDURES Radiographs of stifle joints at 135° extension in true lateral position were used to determine tibial tuberosity advancement distances for use in the MMT. A method was devised to incorporate the planned osteotomy axis; distal patellar translations of 0, 3, 5, or 10 mm; and advancement cage implant application level along the osteotomy site in advancement planning measurements...
April 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28345960/graft-utilization-in-the-bridging-reconstruction-of-irreparable-rotator-cuff-tears-a-systematic-review
#3
Matthew R Lewington, Devin P Ferguson, T Duncan Smith, Robert Burks, Catherine Coady, Ivan Ho-Bun Wong
BACKGROUND: Rotator cuff tears are one of the most common conditions affecting the shoulder. Because of the difficulty in managing massive rotator cuff tears and the inability of standard techniques to prevent arthropathy, surgeons have developed several novel techniques to improve outcomes and ideally alter the natural history. PURPOSE: To systematically review the existing literature and analyze reported outcomes to evaluate the effectiveness of using a bridging graft reconstruction technique to treat large to massive irreparable rotator cuff tears...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28345775/quantification-of-the-position-and-depth-of-the-flexor-hallucis-longus-groove-in-euarchontans-with-implications-for-the-evolution-of-primate-positional-behavior
#4
Gabriel S Yapuncich, Erik R Seiffert, Doug M Boyer
OBJECTIVE: On the talus, the position and depth of the groove for the flexor hallucis longus tendon have been used to infer phylogenetic affinities and positional behaviors of fossil primates. This study quantifies aspects of the flexor hallucis longus groove (FHLG) to test if: (1) a lateral FHLG is a derived strepsirrhine feature, (2) a lateral FHLG reflects inverted and abducted foot postures, and (3) a deeper FHLG indicates a larger muscle. METHODS: We used linear measurements of microCT-generated models from a sample of euarchontans (n = 378 specimens, 125 species) to quantify FHLG position and depth...
March 27, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28344975/equine-dental-pulp-connective-tissue-particles-reduced-lameness-in-horses-in-a-controlled-clinical-trial
#5
Alicia L Bertone, Nathalie A Reisbig, Allison H Kilborne, Mari Kaido, Navid Salmanzadeh, Rebecca Lovasz, Joy L Sizemore, Logan Scheuermann, Rosalind J Kopp, Lisa J Zekas, Matthew T Brokken
OBJECTIVE: To assess if injection of allogeneic dental pulp tissue particles would improve lameness in horses with naturally occurring osteoarthritis (OA) or soft tissue (ST) injury. DESIGN: Prospective, randomized, blinded, and controlled clinical trial and client survey assessment. ANIMALS: Forty lame client-owned horses. PROCEDURES: Sterile dental pulp, recovered from otherwise healthy foals that perish during dystocia, was processed under good manufacturing processing to produce mechanically manipulated, unexpanded pulp tissue particles containing viable cells surrounded in extracellular matrix...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28344905/evolution-of-the-patellar-sesamoid-bone-in-mammals
#6
Mark E Samuels, Sophie Regnault, John R Hutchinson
The patella is a sesamoid bone located in the major extensor tendon of the knee joint, in the hindlimb of many tetrapods. Although numerous aspects of knee morphology are ancient and conserved among most tetrapods, the evolutionary occurrence of an ossified patella is highly variable. Among extant (crown clade) groups it is found in most birds, most lizards, the monotreme mammals and almost all placental mammals, but it is absent in most marsupial mammals as well as many reptiles. Here, we integrate data from the literature and first-hand studies of fossil and recent skeletal remains to reconstruct the evolution of the mammalian patella...
2017: PeerJ
https://www.readbyqxmd.com/read/28344444/distribution-of-platelet-rich-plasma-after-ultrasound-guided-injection-for-chronic-elbow-tendinopathies
#7
Gi-Young Park, Dong Rak Kwon, Hee Kyung Cho, Jinyoung Park, Jung Hyun Park
Characteristics of the spreads of platelet-rich plasma (PRP) are not widely known despite commonly use. This study aims to evaluate whether PRP stays within the injected area by using ultrasonography, to improve understanding of the spreads of intratendinous injected PRP. Thirty-nine patients (15 males, 24 females; mean age, 49.3 years), who had symptoms on their elbows (> 6 months) and diagnosed as lateral (25 elbows) or medial (14 elbows) tendinopathies of elbow, were included. The severity of tendon pathology was assessed by ultrasonography as tear or no tear...
March 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28342723/effects-of-eccentric-overload-training-on-patellar-tendon-and-vastus-lateralis-in-three-days-of-consecutive-running
#8
Fernando Sanz-López, César Berzosa, Fidel Hita-Contreras, Antonio Martínez-Amat
BACKGROUND: The analysis of structural changes in patellar tendon and muscle of healthy subjects in response to mechanical loads provides useful insight into the mechanism underlying overuse injuries. METHODS: Changes produced in tendon and muscles structures after eccentric overload training and three consecutive running days were examined. Twenty healthy subjects were recruited and divided into two groups. One group (ECC) performed eccentric overload squat training (six weeks)...
March 22, 2017: Knee
https://www.readbyqxmd.com/read/28341663/muscle-tendon-mechanics-explain-unexpected-effects-of-exoskeleton-assistance-on-metabolic-rate-during-walking
#9
Rachel W Jackson, Christopher L Dembia, Scott L Delp, Steven H Collins
The goal of this study was to gain insight into how ankle exoskeletons affect the behavior of the plantarflexor muscles during walking. Using data from previous experiments, we performed electromyography-driven simulations of musculoskeletal dynamics to explore how changes in exoskeleton assistance affected plantarflexor muscle-tendon mechanics, particularly for the soleus. We used a model of muscle energy consumption to estimate individual muscle metabolic rate. As average exoskeleton torque was increased, while no net exoskeleton work was provided, a reduction in tendon recoil led to an increase in positive mechanical work performed by the soleus muscle fibers...
March 24, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28341304/the-normal-variants-in-the-left-bundle-branch-system
#10
REVIEW
M V Elizari
This article reviewed the main anatomic and physiopathological aspects of the left bundle branch from its origin in the His bundle and its intraventricular distribution on the left endocardial surface. The results are based on the relevant literature and on personal observations executed on 206 hearts distributed as follows: 67 dogs, 60 humans, 45 sheep, 22 pigs, 10 cows, 2 monkeys, 1 guanaco, and 1 sea lion. The main anatomical features of the His-Purkinje conducting system may be summarized as follows: The bundle of His is composed by two segments: the penetrating and branching portions...
March 14, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28341266/influence-of-fixation-point-of-latissimus-dorsi-tendon-transfer-for-irreparable-rotator-cuff-tear-on-glenohumeral-external-rotation-a-cadaver-study
#11
K Bargoin, M Boissard, J Kany, J Grimberg
Latissimus dorsi tendon transfer is a surgical option for treating irreparable posterosuperior rotator cuff tears, notably when attempting to reconstruct active external rotation. We hypothesized that the positioning of the transfer's point of fixation would differ depending on the desired elbow-to-body external rotation or external rotation with the elbow abducted. MATERIAL AND METHODS: Seven shoulders from four whole frozen cadavers were used. We created two systems to install the subject in a semi-seated position to allow external rotation elbow to body and the arm abducted 90°...
December 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28341088/the-latest-treatment-strategy-for-the-rheumatoid-hand-deformity
#12
Hajime Ishikawa
With a remarkable improvement in the pharmacotherapy of rheumatoid arthritis (RA), severely handicapped patients are very rare to see. Healing, repair and drug-free, and toward radical cure are coming to be possible. In the clinical practice, more than 50% of the patients are in remission. However, some patients are still difficult to reach remission due to comorbidities and economic burden. In the patient with clinical remission, smoldering synovitis so called "silent destructor" is often detected by ultrasonograpy or by synovial histology in the small joints of the hand...
March 22, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28340944/snapping-knee-syndrome-caused-by-semitendinosus-and-semimembranosus-tendons-a-case-report
#13
Nikolaus von Dercks, Jan Dirk Theopold, Bastian Marquass, Christoph Josten, Pierre Hepp
We report the case of a 24-year-old female triathlon athlete with a snapping syndrome of both the distal semimembranosus and the semitendinosus tendon which has not been described so far. The semitendinosus tendon was harvested whereupon snapping has diminished. Tenoscopy and digital palpation showed the semimembranosus tendon to cause the snapping, as well. A careful step-by-step release of the anterior insertion of the tendon was performed with the result of a snapping-free range of motion of the patient's knee...
December 2016: Knee
https://www.readbyqxmd.com/read/28340663/compound-or-specially-designed-flaps-in-the-lower-extremities
#14
REVIEW
Bruno Battiston, Davide Ciclamini, Jin Bo Tang
Novel and combined tissue transfers from the lower extremity provide new tools to combat soft tissue defects of the hand, foot, and ankle, or fracture nonunion. Flaps can be designed for special purposes, such as providing a gliding bed for a grafted or repaired tendon or for thumb or finger reconstruction. Propeller flaps can cover soft tissue defects of the leg and foot. In repairing severe bone and soft tissue defects of the lower extremity, combined approaches, including external fixators, one-stage vascularized bone grafting, and skin or muscle flap coverage of the traumatized leg and foot, have become popular...
April 2017: Clinics in Plastic Surgery
https://www.readbyqxmd.com/read/28340211/familial-hypercholesterolemia-xanthelesma-arcus-corneae-tendon-xanthomas
#15
A K Pannu, N Sharma
No abstract text is available yet for this article.
March 11, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/28338815/enhanced-tenogenic-differentiation-and-tendon-like-tissue-formation-by-chip-overexpression-in-tendon-derived-stem-cells
#16
Weifeng Han, Lei Chen, Junpeng Liu, Ai Guo
The carboxyl terminus of Hsc70-interacting protein (CHIP, also known as STUB1) plays critical roles in the proliferation and differentiation of many types of cells. The potential function of CHIP in tendon-derived stem cells (TDSCs) remains largely unknown at present. Here, we investigated the effects of CHIP on tenogenic differentiation of TDSCs via lentivirus-mediated overexpression. Forced expression of CHIP induced morphological changes and significantly enhanced cell proliferation, as well as tendon differentiation in vitro...
February 22, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28338382/does-foot-anthropometry-predict-metabolic-cost-during-running
#17
Herman van Werkhoven, Stephen J Piazza
Several recent investigations have linked running economy to heel length, with shorter heels being associated with less metabolic energy consumption. It has been hypothesized that shorter heels require larger plantarflexor muscle forces, thus increasing tendon energy storage and reducing metabolic cost. The goal of this study was to investigate this possible mechanism for metabolic cost reduction. Fifteen male subjects ran at 16 km·h(-1) on a treadmill and subsequently on a force-plate instrumented runway...
March 24, 2017: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/28338095/the-effect-of-microbial-mats-in-the-decay-of-anurans-with-implications-for-understanding-taphonomic-processes-in-the-fossil-record
#18
M Iniesto, I Villalba, A D Buscalioni, M C Guerrero, A I López-Archilla
The pattern and sequence of the decomposition of the Pipidae African dwarf frog (Hymenochirus boettgeri) is tracked in an experiment with microbial mats in order to explore soft tissue preservation over three years. Frog decay in microbial mats is preceded by rapid entombment (25-30 days) and mediated by the formation of a sarcophagus, which is built by a complex microbial community. The frog carcasses maintained a variety of soft tissues for years. Labile organic structures show greater durability within the mat, cells maintain their general shape (bone marrow cells and adipocytes), and muscles and connective tissues (adipose and fibrous tendons) exhibit their original organic structures...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28337656/what-factors-are-associated-with-femoral-component-internal-rotation-in-tka-using-the-gap-balancing-technique
#19
Seung-Yup Lee, Hong-Chul Lim, Ki-Mo Jang, Ji-Hoon Bae
BACKGROUND: When using the gap-balancing technique for TKA, excessive medial release and varus proximal tibial resection can be associated with internal rotation of the femoral component. Previous studies have evaluated the causes of femoral component rotational alignment with a separate factor analysis using unadjusted statistical methods, which might result in treatment effects being attributed to confounding variables. QUESTIONS/PURPOSES: (1) What pre- and intraoperative factors are associated with internal rotation of the femoral component in TKA using the gap balancing technique? (2) To what degree does femoral component rotation as defined by the navigation system differ from rotation as measured by postoperative CT? METHODS: Three hundred seventy-seven knees that underwent computer-assisted primary TKA attributable to degenerative osteoarthritis with varus or mild valgus alignment in which medial soft tissue release was performed, and those with preoperative radiographs including preoperative CT between October 2007 and June 2014 were included in the study...
March 23, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28336820/an-advanced-glycation-endproduct-age-rich-diet-promotes-accumulation-of-ages-in-achilles-tendon
#20
Dorthe Skovgaard, Rene B Svensson, Jean Scheijen, Pernilla Eliasson, Pernille Mogensen, Anne Mette F Hag, Michael Kjær, Casper G Schalkwijk, Peter Schjerling, Stig P Magnusson, Christian Couppé
Advanced Glycation Endproducts (AGEs) accumulate in long-lived tissue proteins like collagen in bone and tendon causing modification of the biomechanical properties. This has been hypothesized to raise the risk of orthopedic injury such as bone fractures and tendon ruptures. We evaluated the relationship between AGE content in the diet and accumulation of AGEs in weight-bearing animal Achilles tendon. Two groups of mice (C57BL/6Ntac) were fed with either high-fat diet low in AGEs high-fat diet (HFD) (n = 14) or normal diet high in AGEs (ND) (n = 11)...
March 2017: Physiological Reports
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