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extensor tendons

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https://www.readbyqxmd.com/read/28444241/cervical-spine-muscle-tendon-unit-length-differences-between-neutral-and-forward-head-postures-biomechanical-study-using-human-cadaveric-specimens
#1
Saeed Khayatzadeh, Olivia A Kalmanson, Dale Schuit, Robert M Havey, Leonard I Voronov, Alexander J Ghanayem, Avinash G Patwardhan
Background: Forward Head Posture (FHP) may be associated with neck pain and poor health-related quality of life. Literature describes only qualitative muscle length changes associated with FHP. Objective: To quantify how muscle-tendon unit lengths are altered when human cadaveric specimens are placed in alignments representing different severities of FHP. Design: Biomechanical study using 13 fresh-frozen cadaveric cervical spine specimens (Occiput-T1, 54±15yrs)...
April 21, 2017: Physical Therapy
https://www.readbyqxmd.com/read/28442856/functional-outcome-of-fixation-of-complex-intra-articular-distal-radius-fractures-with-a-variable-angle-distal-radius-volar-rim-plate
#2
M Spiteri, W Ng, J Matthews, D Power
Aim To evaluate the outcome of these complex fractures using a volar approach and the DePuy Synthes variable-angle 2.4-mm distal radius rim plate. This plate is precontoured to the volar rim for placement distal to the watershed line allowing purchase of the rim fragment of the lunate facet. Its low profile and smooth edges are designed to minimize flexor tendon irritation. Method We report on a consecutive series of far distal AO-23B3 and AO-23C3 fractures treated using this plate in a tertiary hand center between November 2011 and May 2014...
April 2017: Journal of Hand and Microsurgery
https://www.readbyqxmd.com/read/28436371/pigmented-villonodular-synovitis-various-manifestations-inconsistent-terminology-and-treatment-cases-study
#3
Paweł Kokoszka, Waldemar Woźniak, Łukasz Łapaj, Jacek Kruczyński
Pigmented villonodular synovitis (PVNS) as well as tenosynovial giant cell tumor (TGCT) are both diagnosed and described in two forms, namely a localized and diffuse type. They form a diverse group of proliferative lesions in articular synovium and tendon sheaths. The inconsistent terminology impedes communication between patients, orthopedic surgeons, radiologists and pathologists, leading to misunderstandings and delaying treatment. In this paper, we present three cases of PVNS/TGCT (involving the fourth toe extensor tendon sheath, hip joint after resurfacing and flexor hallucis longus tendon sheath) together with suggestions regarding the unification of the terminology as well as diagnosis and treatment...
January 26, 2017: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28435563/ultrasound-guided-percutaneous-lavage-in-the-treatment-of-calcific-tendinopathy-of-elbow-extensor-tendons-a-case-report
#4
M Abate, V Salini, C Schiavone
We report the efficacy of the ultrasound-guided percutaneous treatment in the management of elbow extensor tendons calcific tendinopathy. The ultrasound-guided percutaneous treatment is broadly used with positive results in patients suffering from rotator cuff calcific tendinopathy. However, this interventional method has been reported only in one patient in the medical literature. A 34 years-old female who complained pain, swelling and severe functional limitation of the right elbow was referred to our unit...
July 2016: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/28428916/extensor-carpi-ulnaris-instability-following-ulnar-shortening-osteotomy
#5
Mohamed Noureldin, Sanjeev Kakar
Background Ulnar shortening osteotomy (USO) is a well-established procedure for the treatment of ulnar impaction syndrome. Although uncommon, the procedure can be associated with complications including nonunion, malunion, and hardware irritation. Case Description We present a 56-year-old woman who developed extensor carpi ulnaris (ECU) tendon instability following an USO. Literature Review The etiology of such a complication can be multifactorial. Clinical Relevance The recurrence of ulnar pain following an USO should raise the suspicion of possible ECU instability within the differential diagnosis...
May 2017: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/28422876/low-complication-rate-of-elastic-stable-intramedullary-nailing-esin-of-pediatric-forearm-fractures-a-retrospective-study-of-202-cases
#6
Christiane Kruppa, Pamela Bunge, Thomas A Schildhauer, Marcel Dudda
Elastic stable intramedullary nailing (ESIN) has been established as state of the art treatment for forearm fractures in children, if operative stabilization is required. Their use has been expanded to single bone shaft fractures, and also more complex injuries such as Monteggia fractures or Monteggia-like lesions. A wide range of complications has been reported in the literature, up to 70% in certain investigations. The purpose of this study was to assess the complication rate after ESIN treatment of forearm fractures in children and adolescents in a representative cohort of patients from a level 1 trauma center in Germany...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28416461/detection-of-penetration-of-the-dorsal-cortex-by-epiphyseal-screwsof-distal-radius-volar-plates-anatomical-study-comparing-ultrasoundandfluoroscopy
#7
Vernet Paul, Durry Anastasia, Nicolau Xavier, D'Ambrosio Adrien, Collinet Arnaud, Salazar Botero Santiago, Liverneaux Philippe, Hidalgo Diaz Juan José
Osteosynthesis of the distal radius by a volar plate can be complicated by lesions of extensor tendons by screws penetrating the dorsal cortex. The fluoroscopic skyline view enables to confirm the length of the screws. To avoid its risk of irradiation, some authors have recommended to use ultrasound instead. The goal of this study was to demonstrate that the detection rate of screws penetrating the dorsal cortex was at least as good using ultrasound compared to fluoroscopic skyline. A volar plate in which one screw penetrated the dorsal cortex was implanted in 10 cadaveric wrists...
April 14, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28411958/effects-of-step-length-and-step-frequency-on-lower-limb-muscle-function-in-human-gait
#8
Yoong Ping Lim, Yi-Chung Lin, Marcus G Pandy
The aim of this study was to quantify the effects of step length and step frequency on lower-limb muscle function in walking. Three-dimensional gait data were used in conjunction with musculoskeletal modeling techniques to evaluate muscle function over a range of walking speeds using prescribed combinations of step length and step frequency. The body was modeled as a 10-segment, 21-degree-of-freedom skeleton actuated by 54 muscle-tendon units. Lower-limb muscle forces were calculated using inverse dynamics and static optimization...
March 21, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28400179/the-optimal-orthosis-and-motion-protocol-for-extensor-tendon-injury-in-zones-iv-viii-a-systematic-review
#9
Alison L Wong, Madeline Wilson, Sakina Girnary, Matthew Nojoomi, Soumyadipta Acharya, Scott M Paul
STUDY DESIGN: Systematic review INTRODUCTION: There exist numerous combinations of orthoses and motion protocols for the treatment of proximal extensor tendon injuries. PURPOSE: The purpose of this study was to determine the optimal combination of motion protocol and orthotic treatment for the rehabilitation of proximal extensor tendon injuries (zones IV-VIII). METHODS: A systematic review of English language randomized clinical trials and cohort studies investigating extensor tendon rehabilitation from 1960 to 2016 was conducted in MEDLINE, Embase, Cochrane, CINAHL, PEDro, and OTseeker...
April 8, 2017: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/28399788/distal-radioulnar-joint-functional-anatomy-including-pathomechanics
#10
J R Haugstvedt, M F Langer, R A Berger
The distal radioulnar joint allows the human to rotate the forearm to place the hand in a desired position to perform different tasks, without interfering with the grasping function of the hand. The ulna is the stable part of the forearm around which the radius rotates; the stability of the distal radioulnar joint is provided by the interaction between ligaments, muscles and bones. The stabilizing structures are the triangular fibrocartilage complex, the ulnocarpal ligament complex, the extensor carpi ulnaris tendon and tendon sheath, the pronator quadratus, the interosseous membrane and ligament, the bone itself and the joint capsule...
May 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28399657/cadaveric-evaluation-of-dorsal-intermetatarsal-approach-for-plantar-plate-and-lateral-collateral-ligament-repair-of-the-lesser-metatarsophalangeal-joints
#11
Phinit Phisitkul, Vinay Hosuru Siddappa, Tinnart Sittapairoj, Jessica E Goetz, Bryan D Den Hartog, John E Femino
BACKGROUND: Access to the plantar plate has been described using either a plantar approach or an extensive dorsal approach that required complete joint destabilization and often a metatarsal osteotomy. Clinical scenarios related to plantar plate tear vary and the pathologies in early stages are frequently limited to unilateral soft tissue structures; a less invasive operative approach may be possible. A novel approach requiring a release of only the lateral collateral ligament and the lateral half of the plantar plate is presented in this cadaver model; the extent of joint exposure possible is described...
April 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28394713/elbow-mri-findings-do-not-correlate-with-future-placement-on-the-disabled-list-in-asymptomatic-professional-baseball-pitchers
#12
Nicholas M Gutierrez, Christopher Granville, Lee Kaplan, Michael Baraga, Jean Jose
BACKGROUND: Injury rates among professional baseball players may reach as high as 5.8 per 1000 encounters, with pitchers being most vulnerable on account of the excessive biomechanical load on the upper extremity during the throwing motion. Anatomically, the shoulder is the most common site of pitching-related injury, accounting for 30.7% of injuries, closely followed by the elbow at 26.3%. Characteristic valgus loading imparts a predictable constellation of stresses on the joint, including medial tension, lateral compression, and posterior medial shearing...
April 1, 2017: Sports Health
https://www.readbyqxmd.com/read/28389821/variations-of-anatomy-on-mri-of-the-first-extensor-compartment-of-the-wrist-and-association-with-dequervain-tenosynovitis
#13
Connie Y Chang, Arvin B Kheterpal, Joao Rafael Terneria Vicentini, Ambrose J Huang
OBJECTIVE: To study anatomical variations on MRI of the first extensor compartment of the wrist in DeQuervain tenosynovitis (DQT). MATERIALS AND METHODS: A retrospective search for DQT patients yielded 47 subjects (51 ± 15 years, 36 female, 11 male). The age-matched control group (normal first extensor compartment) was 49 ± 15 years (29 female, 18 male). Two independent readers reviewed: the number of abductor pollicis longus (APL) tendon slips, tendon sheath septations (compartmentalization), and APL and EPB cross-sectional area (CSA) at the radial styloid...
April 7, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28383327/surgical-approach-for-elastic-stable-intramedullary-nail-in-pediatric-radius-shaft-fracture-a-systematic-review
#14
Sandra L Nørgaard, Sara S Riber, Frederik B Danielsson, Niels W Pedersen, Bjarke Viberg
When using elastic stable intramedullary nailing in children's distal radius shaft fractures, the surgical approach can either be lateral or dorsal. The aim of this article was to carry out a systematic review of the literature comparing the two types of approaches in terms of complications. An electronic search of databases was performed. Titles of articles were screened, and abstracts and full text were read. Data were extracted in terms of demographics and complications. The dorsal approach had a 2.6% rate of extensor pollicis longus tendon rupture, whereas the lateral approach had a 2...
April 5, 2017: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/28363294/the-use-of-dermal-skin-substitutes-for-the-treatment-of-the-burned-hand
#15
REVIEW
Ian C Sando, Kevin C Chung
The hand is commonly affected in burn injuries. Joints and extensor tendons are vulnerable given their superficial location. Durable coverage that permits relative frictionless tendon gliding and minimizes scar contracture is required to optimize functional outcomes. When soft tissue donor sites are limited, the use of dermal skin substitutes provides stable coverage with minimal scarring, good mobility, and acceptable appearance. A comprehensive review of dermal skin substitutes and their use with burn reconstruction of the hand is provided...
May 2017: Hand Clinics
https://www.readbyqxmd.com/read/28357555/morphological-study-and-relations-of-the-fascia-vasto-adductoria
#16
Eman Elazab Beheiry Elazab
The precise description of the fascia vasto-adductoria (FVA) has become an issue of great surgical and clinical importance. Neurovascular entrapment within the adductor canal (AC) may simulate many clinical conditions for cases presented with medial knee or leg pain and ischemic manifestations of the leg. The aim of the present work is to describe the morphological features of the FVA and to elucidate its neurovascular relations. Forty thigh specimens, pertaining to 15 embalmed and five fresh adult human cadavers, were dissected in pursuit of this aim...
March 29, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28355741/-mri-of-the-finger-ligament-and-tendon-injuries-imaging-technique-and-clinical-application
#17
Y X Li, W Ye, R J Bai, H L Zhan, Y Liu, Z H Qian, H Zhang
Objective: To explore the MRI technique and the clinical application in ligament and tendons of fingers. Methods: The study was reviewed and approved by an institutional review board of hospital.A total of 20 normal volunteers and 50 patients from Beijing Jishuitan Hospital between May 2012 and May 2015 with finger injuries were chosen to undergo magnetic resonance examination by using Achieva 3.0 T MR produced by Philips.Scanning from coronal, sagittal and axial view in T(1)-weighted and proton fat saturation sequence (PD-FS), choosing suitable parameters, in order to get clear images of finger tendons and ligaments...
March 21, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28355674/ultrasound-of-the-knee-common-pathology-excluding-extensor-mechanism
#18
Jon A Jacobson, Thumanoon Ruangchaijatuporn, Viviane Khoury, Olaf Magerkurth
Ultrasound can be used to diagnose many types of pathology and guide various diagnostic or therapeutic procedures. The most common applications for musculoskeletal ultrasound of the knee include evaluation of the joint recesses, the extensor mechanism, and bursae including Baker's cyst. However, a role exists for ultrasound in the evaluation of cartilage, other tendons, ligaments, peripheral nerves, osseous structures, and vasculature. This article reviews common pathologies of these structures as seen with ultrasound...
April 2017: Seminars in Musculoskeletal Radiology
https://www.readbyqxmd.com/read/28352603/analysis-of-pediatric-tendon-injuries-in-the-hand-in-comparison-with-adults
#19
Jin Sung Kim, Seung Je Sung, Young Joon Kim, Young Woong Choi
BACKGROUND: The purpose of this study was to identify the epidemiologic characteristics of hand tendon injuries in children and to compare these with those of adults. METHODS: This retrospective study was conducted on acute traumatic tendon injuries of the hand treated at our institution from 2005 to 2013, based on medical records and X-ray findings. Age, sex, hand injured, mechanism of injury, tendons and zones injured, number of affected digits, and comorbidities and complications were analyzed...
March 2017: Archives of Plastic Surgery
https://www.readbyqxmd.com/read/28348529/sport-specific-capacity-to-use-elastic-energy-in-the-patellar-and-achilles-tendons-of-elite-athletes
#20
Hans-Peter Wiesinger, Florian Rieder, Alexander Kösters, Erich Müller, Olivier R Seynnes
Introduction: During running and jumping activities, elastic energy is utilized to enhance muscle mechanical output and efficiency. However, training-induced variations in tendon spring-like properties remain under-investigated. The present work extends earlier findings on sport-specific profiles of tendon stiffness and cross-sectional area to examine whether years of distinct loading patterns are reflected by tendons' ability to store and return energy. Methods:Ultrasound scans were performed to examine the morphological features of knee extensor and plantar flexor muscle-tendon units in elite ski jumpers, distance runners, water polo players, and sedentary controls...
2017: Frontiers in Physiology
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