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https://www.readbyqxmd.com/read/29142084/impaired-vestibular-responses-in-internuclear-ophthalmoplegia-association-and-dissociation
#1
Seo-Young Choi, Hyo-Jung Kim, Ji-Soo Kim
OBJECTIVE: To determine the role of the medial longitudinal fasciculus (MLF) in conveying vestibular signals. METHODS: In 10 patients with isolated acute unilateral internuclear ophthalmoplegia (INO) due to an acute stroke, we performed comprehensive vestibular evaluation using video-oculography, head impulse tests with a magnetic search coil technique, bithermal caloric tests, tests for the ocular tilt reaction, and measurements of subjective visual vertical and cervical and ocular vestibular evoked myogenic potentials (VEMPs)...
November 15, 2017: Neurology
https://www.readbyqxmd.com/read/29140160/clinical-measures-and-their-contribution-to-dysfunction-in-individuals-with-patellar-tendinopathy
#2
Hyunjae Jeon, Melanie L McGrath, Neal Grandgenett, Adam B Rosen
CONTEXT: Patellar tendinopathy is prevalent in physically active populations and it affects their quality of living, performance of activity, and may contribute to the early cessation of their athletic careers. A number of previous studies have identified contributing factors for patellar tendinopathy however their contributions to self-reported dysfunction remain unclear. OBJECTIVE: The purpose of this investigation was to determine if strength, flexibility, and various lower extremity static alignments contributed to self-reported function and influence the severity of patellar tendinopathy...
November 15, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29128877/the-location-of-the-medial-parapatellar-arthrotomy-influences-intraoperative-patella-tracking
#3
Scott R Nodzo, Maximilian Kasparek, Kilian Rueckl, Friedrich Boettner
PURPOSE: The medial parapatellar arthrotomy (MPPA) is a commonly utilized surgical approach; however, the placement of the arthrotomy and its influence on intraoperative patellar tracking has not been evaluated. METHODS: Six knees from three fresh frozen cadavers with transthoracic amputations were operated on. All underwent standard posterior stabilized total knee arthroplasty using a medial parapatellar approach placed at the border of the vastus medialis oblique (VMO)-quadriceps junction...
November 11, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29122127/fluoroscopic-iliosacral-screw-placement-made-safe
#4
Nadomir Gusic, Igor Grgorinic, Ivica Fedel, Domagoj Lemac, Nado Bukvic, Matko Gusic, Tedi Cicvaric, Zvonimir Lovric
AIM: Unstable posterior pelvic ring injuries should be stabilised successfully by percutaneous iliosacral screwing. The intervention takes place under intraoperative fluoroscopic guidance. The inlet and outlet views are crucial and are performed by tilting the image intensifier. Safely interpreting fluoroscopic views can be challenging in certain clinical scenarios. We demonstrated on a series of patients howpreoperative CT scans can be used to anticipate the appropriate intraoperative inlet and outlet fluoroscopic views and positioning of the patient on the operating table, thereby avoiding possible operating table obstacles...
November 2017: Injury
https://www.readbyqxmd.com/read/29112125/the-development-of-an-imu-integrated-clothes-for-postural-monitoring-using-conductive-yarn-and-interconnecting-technology
#5
Sung-Won Kang, Hyeob Choi, Hyung-Il Park, Byoung-Gun Choi, Hyobin Im, Dongjun Shin, Young-Giu Jung, Jun-Young Lee, Hong-Won Park, Sukyung Park, Jung-Sim Roh
Spinal disease is a common yet important condition that occurs because of inappropriate posture. Prevention could be achieved by continuous posture monitoring, but most measurement systems cannot be used in daily life due to factors such as burdensome wires and large sensing modules. To improve upon these weaknesses, we developed comfortable "smart wear" for posture measurement using conductive yarn for circuit patterning and a flexible printed circuit board (FPCB) for interconnections. The conductive yarn was made by twisting polyester yarn and metal filaments, and the resistance per unit length was about 0...
November 7, 2017: Sensors
https://www.readbyqxmd.com/read/29107489/contact-kinematics-correlates-to-tibial-component-migration-following-single-radius-posterior-stabilized-knee-replacement
#6
Matthew G Teeter, Kevin I Perry, Xunhua Yuan, James L Howard, Brent A Lanting
BACKGROUND: Contact kinematics between total knee arthroplasty components is thought to affect implant migration; however, the interaction between kinematics and tibial component migration has not been thoroughly examined in a modern implant system. METHODS: A total of 24 knees from 23 patients undergoing total knee arthroplasty with a single radius, posterior stabilized implant were examined. Patients underwent radiostereometric analysis at 2 and 6 weeks, 3 and 6 months, and 1 and 2 years to measure migration of the tibial component in all planes...
October 6, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29106743/quantifying-meniscal-kinematics-in-dogs
#7
Brian H Park, Scott A Banks, Antonio Pozzi
The dog has been used extensively as an experimental model to study meniscal treatments such as meniscectomy, meniscal repair, transplantation and regeneration. However, there is very little information on meniscal kinematics in the dog. This study used MR imaging to quantify in vitro meniscal kinematics in loaded dog knees in four distinct poses: extension, flexion, internal and external rotation. A new method was used to track the meniscal poses along the convex and posteriorly tilted tibial plateau. Meniscal displacements were large, displacing 13...
November 6, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29100772/the-effect-of-scapula-tilt-and-best-fit-circle-placement-when-measuring-glenoid-bone-loss-in-shoulder-instability-patients
#8
Philipp Moroder, Fabian Plachel, Anna Huettner, Lukas Ernstbrunner, Marvin Minkus, Elisabeth Boehm, Christian Gerhardt, Markus Scheibel
PURPOSE: To analyze the effect of lack of standardization on the reliability of current measurement techniques for glenoid bone loss in clinical practice. METHODS: Ten consecutive patients with anterior glenoid bone loss due to recurrent anterior shoulder instability and available computed tomographic (CT) scans of the affected shoulder were included in this study. One hundred seventy 3-dimensional en-face view images of the 10 glenoids with up to 20° degrees of tilt in the anterior, posterior, superior, and inferior direction were rendered...
October 31, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29097958/unresolved-congenital-torticollis-and-its-consequences-a-report-of-2-cases
#9
Mette Hobaek Siegenthaler
Objective: The purpose of this report was to describe the clinical presentation and case management of 2 children with congenital torticollis. Clinical Features: Two male children (ages 6 and 10 years) presented to a chiropractic clinic with a history of congenital torticollis. They showed signs and symptoms of postural deficiency and developmental delay: posterior plagiocephaly, facial scoliosis, head tilt, compensatory thoracic scoliosis, decreased range of motion in the cervical spine, palpable decreased segmental motion of the upper cervical spine, and an age-related delay in throwing and catching a ball and in one-leg standing...
September 2017: Journal of Chiropractic Medicine
https://www.readbyqxmd.com/read/29091536/scapular-kinematics-by-sex-across-elevation-planes
#10
Bryan R Picco, Meghan E Vidt, Clark R Dickerson
Scapular kinematics are important indicators of dyskinesis, often suggesting underlying shoulder pathology, but the influence of sex is unknown. This study's objective was to examine scapular kinematics in healthy males and females. Positions of surface-mounted reflective markers were tracked during arm elevation movements in 0°/30°/40°/60°/90°/120° planes. Scapulothoracic rotations (protraction/retraction, medial/lateral rotation, posterior/anterior tilt) were calculated. ANOVA analysis evaluated main and interaction effects of sex, plane, phase, elevation angle...
November 1, 2017: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/29090359/oblique-retroperitoneal-approach-for-lumbar-interbody-fusion-from-l1-to-s1-in-adult-spinal-deformity
#11
Ki-Tack Kim, Dae-Jean Jo, Sang-Hyun Lee, Eun-Min Seo
In recent years, with advancements in surgical techniques and instrumentation, the lateral lumbar interbody fusion is being used increasingly as an alternative procedure to anterior approach. In this study, we illustrated a oblique retroperitoneal approach for lumbar interbody fusion with one incision site and tilting of the operation table in adult spinal deformity and evaluate the radiographical findings and clinical outcomes of patients treated using this technique. This study included 32 patients scheduled to undergo anterior and posterior long-level fusions for lumbar degenerative kyphosis or degenerative lumbar scoliosis...
October 31, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/29075017/assessment-of-a-novel-pinhole-supplementary-implant-for-sulcus-fixation-in-pseudophakic-cadaver-eyes
#12
K T Tsaousis, L Werner, C L C Trindade, J Guan, J Li, N Reiter
PurposeTo evaluate a novel small-aperture supplementary implant that applies the principle of pinholes for management of irregular astigmatism, in postmortem human eyes.MethodsPseudophakic human cadaver eyes were imaged by anterior segment optical coherence tomography (AS-OCT) to assess position of the in-the-bag intraocular lens (IOL). Eyes were prepared as per the Miyake-Apple technique. Two versions of the supplementary implant (open-loop and tripod designs) were then inserted into the sulcus of each eye...
October 27, 2017: Eye
https://www.readbyqxmd.com/read/29069634/comparing-non-invasive-scapular-tracking-methods-across-elevation-angles-planes-of-elevation-and-humeral-axial-rotations
#13
T-J Grewal, A C Cudlip, C R Dickerson
Altered scapular motions premeditate shoulder impingement and other musculoskeletal disorders. Divergent experimental conditions in previous research precludes rigorous comparisons of non-invasive scapular tracking techniques. This study evaluated scapular orientation measurement methods across an expanded range of humeral postures. Scapular medial/lateral rotation, anterior/posterior tilt and protraction/retraction was measured using an acromion marker cluster (AMC), a scapular locator, and a reference stylus...
October 12, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29066106/quantitative-effect-of-pelvic-position-on-radiographic-assessment-of-acetabular-component-position
#14
Dimitri E Delagrammaticas, Hasham M Alvi, Aaron J Kaat, Ryan R Sullivan, Michael D Stover, David W Manning
BACKGROUND: Intraoperative fluoroscopy aims to improve component position in total hip arthroplasty. Measurement bias related to image quality, however, has not been quantified. We aim to quantify measurement bias in the interpretation of acetabular component position as a function of pelvis and fluoroscopic beam position in a simulated supine total hip arthroplasty model. METHODS: Posterior-anterior pelvis and hip images were obtained using a previously described pelvic model with known acetabular component position...
September 25, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29053448/the-effects-of-coding-schemes-on-vibrotactile-biofeedback-for-dynamic-balance-training-in-parkinson-s-disease-and-healthy-elderly-individuals
#15
Beom-Chan Lee, Alberto Fung, Timothy A Thrasher
A coding scheme for earlier versions of vibrotactile biofeedback systems for balance-related applications was primarily binary in nature, either off or on at a given threshold (range of postural tilt), making it unable to convey information about error magnitude. The purpose of this study was to explore the effects of two coding schemes (binary vs. continuous) for vibrotactile biofeedback during dynamic weight-shifting exercises that are common physical therapists' recommended balance exercises used in clinical settings...
October 16, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/29034578/a-prospective-split-mouth-study-comparing-tilted-implants-with-angulated-connection-versus-conventional-implants-with-angulated-abutment
#16
Manú Van Weehaeghe, Hugo De Bruyn, Stefan Vandeweghe
BACKGROUND: An angulation of the implant connection could overcome the problems related to angulated abutments. PURPOSE: This study compares conventional implants with angulated abutment to tilted implants with an angulated connection. MATERIALS AND METHODS: Twenty patients were treated in the edentulous mandible. In the posterior jaw locations, one conventional tilted implant with angulated abutment and one angulated implant without abutment were placed...
October 16, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29034272/influence-of-head-position-on-the-cbct-accuracy-in-assessment-of-the-proximity-of-the-root-apices-to-the-inferior-alveolar-canal
#17
Sadaf Adibi, Shoaleh Shahidi, Saeed Nikanjam, Maryam Paknahad, Mohammadali Ranjbar
STATEMENT OF THE PROBLEM: The most important risk factor for inferior alveolar nerve (IAN) damage is the proximity of the mandibular root apices to the alveolar canal. Failure to position the patient's head at standardized orientation during cone beam computed tomography (CBCT) scans might adversely affect the relative position of the alveolar canal and mandibular root apices with subsequent treatment failure. PURPOSE: The purpose of the present study was to investigate the influence of the orientations of the skull during the scanning procedure on the accuracy of CBCT images in determining the positional relationship of the mandibular tooth apices to the alveolar canal...
September 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/29021758/acute-neuromuscular-adaptations-in-the-postural-control-of-patients-with-parkinson-s-disease-after-perturbed-walking
#18
Cristian F Pasluosta, Simon Steib, Sarah Klamroth, Heiko Gaßner, Julia Goßler, Julius Hannink, Vinzenz von Tscharner, Klaus Pfeifer, Juergen Winkler, Jochen Klucken, Bjoern M Eskofier
Patients suffering from Parkinson's disease (PD) present motor impairments reflected in the dynamics of the center of pressure (CoP) adjustments during quiet standing. One method to study the dynamics of CoP adjustments is the entropic half-life (EnHL), which measures the short-term correlations of a time series at different time scales. Changes in the EnHL of CoP time series suggest neuromuscular adaptations in the control of posture. In this study, we sought to investigate the immediate changes in the EnHL of CoP adjustments of patients with PD during one session of perturbed (experimental group) and unperturbed treadmill walking (control group)...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29018320/virtual-balancing-for-studying-and-training-postural-control
#19
Daniela Buettner, Daniela Dalin, Isabella K Wiesmeier, Christoph Maurer
Postural control during free stance has been frequently interpreted in terms of balancing an inverted pendulum. This even holds, if subjects do not balance their own, but an external body weight. We introduce here a virtual balancing apparatus, which produces torque in the ankle joint as a function of ankle angle resembling the gravity and inertial effects of free standing. As a first aim of this study, we systematically modified gravity, damping, and inertia to examine its effect on postural control beyond the physical constraints given in the real world...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28993086/chronological-changes-in-axial-alignment-of-the-ipsilateral-hip-and-knee-after-total-hip-arthroplasty
#20
Keisuke Akiyama, Katsuya Nakata, Makoto Kitada, Mitsuyoshi Yamamura, Hajime Owaki, Takeshi Fuji
BACKGROUND: Internal rotation of the hip and lateral patellar tilt increases after total hip arthroplasty (THA). However, it remains unknown whether these parameters change with time after the index THA. METHODS: A total of 91 patients undergoing 2-stage bilateral primary THAs between January 2008 and May 2014 were included to assess the association of chronological changes in internal rotation of the hip or lateral patellar tilt with anthropometric and perioperative parameter and changes in alignment after the index THA...
September 19, 2017: Journal of Arthroplasty
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