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https://www.readbyqxmd.com/read/28100024/evaluation-of-cast-re-orientation-on-a-dental-surveyor-using-three-tripod-techniques-a-survey-and-in-vitro-study
#1
Mohammed E Sayed, Idris A Busaily, Rana J Nahari, Ruaa O Hakami, Sami M Maashi, Naveen R Ramireddy
PURPOSE: To survey different educational levels (i.e., students, interns, technicians, and prosthodontic faculty) with regard to their opinions, attitudes, and adoption of three selected tripod techniques. The study will also investigate the accuracy of these techniques to reposition casts on the dental surveyor in anterio-posterior (AP) and lateral directions at both technique and educational levels. MATERIALS AND METHODS: Tripod points, scored lines, and cemented post tripod techniques were used in this study...
January 18, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28069503/wettability-gradient-on-the-elytra-in-the-aquatic-beetle-cybister-chinensis-and-its-role-in-angular-position-of-the-beetle-at-water-air-interface
#2
Mingxia Sun, Yuan Chen, Yongmei Zheng, Mingming Zhen, Chunying Shu, Zhendong Dai, Aiping Liang, Stanislav N Gorb
: The surface of the elytra in some species of aquatic beetles displays relatively low contact angles (CAs), even showing hydrophilic properties. In this study, we report on an observation that both sexes of Cybister chinensis beetle fresh elytral surface do not exhibit uniform CA, but rather a wettability gradient along the longitudinal axis in posterior direction. The wettability is very different between females and males due to the presence (female) or absence (male) of channels on the elytral surface...
January 6, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28067099/dynamic-rsa-for-the-evaluation-of-inducible-micromotion-of-oxford-uka-during-step-up-and-step-down-motion
#3
Kristian Horsager, Bart L Kaptein, Lone RøMer, Peter B Jørgensen, Maiken Stilling
Background and purpose - Implant inducible micromotions have been suggested to reflect the quality of the fixation interface. We investigated the usability of dynamic RSA for evaluation of inducible micromotions of the Oxford Unicompartmental Knee Arthroplasty (UKA) tibial component, and evaluated factors that have been suggested to compromise the fixation, such as fixation method, component alignment, and radiolucent lines (RLLs). Patients and methods - 15 patients (12 men) with a mean age of 69 (55-86) years, with an Oxford UKA (7 cemented), were studied after a mean time in situ of 4...
January 9, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/28061916/intracranial-and-intraocular-pressure-during-various-degrees-of-head-down-tilt
#4
Karina Marshall-Goebel, Edwin Mulder, Eric Bershad, Charles Laing, Anders Eklund, Jan Malm, Claudia Stern, Jörn Rittweger
BACKGROUND: More than half of astronauts develop ophthalmic changes during long-duration spaceflight consistent with an abnormal intraocular and intracranial pressure (IOP, ICP) difference. The aim of our study was to assess IOP and ICP during head-down tilt (HDT) and the additive or attenuating effects of 1% CO2 and lower body negative pressure (LBNP). METHODS: In Experiment I, IOP and ICP were measured in nine healthy subjects after 3.5 h HDT in five conditions: -6°, -12°, and -18° HDT, -12° with 1% CO2, and -12° with -20 mmHg LBNP...
January 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28059683/spinopelvic-sagittal-imbalance-as-a-risk-factor-for-adjacent-segment-disease-after-single-segment-posterior-lumbar-interbody-fusion
#5
Tomiya Matsumoto, Shinya Okuda, Takafumi Maeno, Tomoya Yamashita, Ryoji Yamasaki, Tsuyoshi Sugiura, Motoki Iwasaki
OBJECTIVE The importance of spinopelvic balance and its implications for clinical outcomes after spinal arthrodesis has been reported in recent studies. However, little is known about the relationship between adjacent-segment disease (ASD) after lumbar arthrodesis and spinopelvic alignment. The purpose of this study was to clarify the relationship between spinopelvic radiographic parameters and symptomatic ASD after L4-5 single-level posterior lumbar interbody fusion (PLIF). METHODS This was a retrospective 1:5 matched case-control study...
January 6, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28042977/full-can-test-mechanisms-of-a-positive-test-in-patients-with-shoulder-pain
#6
Mark K Timmons, Sevgi S Yesilyaprak, Jeff Ericksen, Lori A Michener
BACKGROUND: The full can test is theorized to produce compressive loads on the supraspinatus tendon within the subacromial space. Characterizing the width of the subacromial outlet, scapular orientation, and shoulder pain during the full can test will improve the mechanistic understanding of the positive full can test. METHODS: Cross-sectional repeated measures design. Participants with subacromial pain syndrome (n=30) were compared to a matched control group (n=30) during 2 conditions: passive support, and the full can test...
December 24, 2016: Clinical Biomechanics
https://www.readbyqxmd.com/read/28042432/upper-full-arch-rehabilitation-with-sinus-by-pass-with-tilted-implants-via-tapered-threaded-expanders-in-low-density-bone-a-clinical-trial
#7
M Andreasi Bassi, C Andrisani, S Lico, Z Ormanier, C Arcuri
PURPOSE: In the present paper the use of tapered-screw bone expanders (TSBEs) is proposed, in combination with the placement of tilted implants, in close proximity to the anterior sinus wall, solving the problem of the reduced height of the alveolar bone in the sub-antral area. The Authors present a case series of full-arch rehabilitations performed with this procedure named: Tilted Implant Expansion Osteotomy (TIEO). MATERIALS AND METHODS: 12 patients (5 males and 7 females, average age 58...
April 2016: Oral & Implantology
https://www.readbyqxmd.com/read/28042117/spinopelvic-mobility-and-acetabular-component-position-for-total-hip-arthroplasty
#8
M Stefl, W Lundergan, N Heckmann, B McKnight, H Ike, R Murgai, L D Dorr
AIMS: Posterior tilt of the pelvis with sitting provides biological acetabular opening. Our goal was to study the post-operative interaction of skeletal mobility and sagittal acetabular component position. MATERIALS AND METHODS: This was a radiographic study of 160 hips (151 patients) who prospectively had lateral spinopelvic hip radiographs for skeletal and implant measurements. Intra-operative acetabular component position was determined according to the pre-operative spinal mobility...
January 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28040875/distal-junctional-kyphosis-in-patients-with-scheuermann-s-disease-a-retrospective-radiographic-analysis
#9
Amir Ghasemi, Timo Stubig, Luigi A Nasto, Malik Ahmed, Hossein Mehdian
PURPOSE: To investigate the relationship between preoperative and postoperative spinopelvic alignment and occurrence of DJK/DJF. STUDY DESIGN/SETTING: This was a retrospective observational cohort study. PATIENT SAMPLE: The sample included 40 patients who underwent posterior correction of SK from January 2006 to December 2014. OUTCOME MEASURES: Correlation analysis between the preoperative and postoperative spinopelvic alignment parameters and development of DJK over the course of the study period were studied...
December 31, 2016: European Spine Journal
https://www.readbyqxmd.com/read/28039353/fluoroscopy-guided-sacroiliac-intraarticular-injection-via-the-middle-portion-of-the-joint
#10
Daisuke Kurosawa, Eiichi Murakami, Toshimi Aizawa
: OBJECTIVE : Sacroiliac intraarticular injection is necessary to confirm sacroiliac joint (SIJ) pain and is usually performed via the caudal one-third portion of the joint. However, this is occasionally impossible for anatomical reasons, and the success rate is low in clinical settings. We describe a technique via the middle portion of the joint. DESIGN : Observational study. SUBJECTS : Enrolled were 69 consecutive patients (27 men and 42 women, with an average age of 53 years) in whom the middle portion of 100 joints was targeted...
December 30, 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28032224/asymmetric-c7-pedicle-subtraction-osteotomy-for-correction-of-rigid-cervical-coronal-imbalance-secondary-to-post-traumatic-heterotopic-ossification-a-case-report-description-of-a-novel-surgical-technique-and-literature-review
#11
Alexander A Theologis, Kate D Bellevue, Erion Qamirani, Christopher P Ames, Vedat Deviren
PURPOSE: Deformities of the cervical spine are uncommon in the coronal plane. In this report, a unique case of a 31-year-old male with a fixed, 30° left coronal deformity due to heterotopic ossification 3 years status post poly-trauma was treated with an asymmetric C7 pedicle subtraction osteotomy (PSO). METHODS: Case report. RESULTS: Pre-operatively, the patient had a fixed 45-degree left tilt of his neck and radiographs demonstrated a rigid 30° scoliosis, 7 cm coronal imbalance, and 4 cm negative sagittal balance, diffuse bridging bone between the spinous processes and the facet joints of C5 to T1 bilaterally...
December 28, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27987606/surveillance-anticoagulation-or-filter-in-calf-vein-thrombosis
#12
Dustin Y Yoon, Ahsun Riaz, Katherine Teter, Ashley K Vavra, Melina R Kibbe, William H Pearce, Mark K Eskandari, Robert Lewandowski, Heron E Rodriguez
OBJECTIVE: This study compared the efficacy and complication rates of inferior vena cava (IVC) filters for calf vein thrombosis (CVT) vs conservative treatment with or without anticoagulation. METHODS: Vascular laboratory studies of patients who had an isolated CVT (anterior and posterior tibialis, peroneal, soleal, and gastrocnemius veins) from April 2009 to January 2014 were retrospectively analyzed from a single institution. Of 647 patients with isolated CVT, 285 (44%) received an IVC filter, and 362 (56%) received medical treatment alone (38...
January 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/27982204/corneal-structure-in-tilted-disc-syndrome
#13
Abuzer Gunduz, Nihat Polat, Tongabay Cumurcu, ErsinErsan Demirel, Ercan Özsoy
Purpose: To evaluate the central corneal thickness (CCT), corneal volume (CV), and anterior and posterior corneal surfaces using the Scheimpflug imaging system in patients diagnosed with tilted disc syndrome (TDS). Methods: The study group (Group 1) and the control group (Group 2) comprised 35 eyes of 35 age-, sex-, and refraction-matched cases. All cases underwent a full ophthalmic examination that included cycloplegic refraction, axial ocular length measurement, and Scheimpflug imaging...
September 2016: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/27978914/-three-dimensional-reconstruction-measurement-study-of-palatal-contour-changes-in-different-bone-ages-after-rapid-maxillary-expansion
#14
Z D Xiong, J Ke, G Z Zhao, Q H Lin, X M Yang, Y H Xiao
Objective: To compare dental and skeletal changes after rapid maxillary expansion in patients with different bone ages. Methods: Thirty-seven patients in different growth period were divided into three groups according to cervical vertebral maturation (CVM). There were 13 patients in the growth acceleration group, 13 patients in growth peak group, and 11 patients in growth deceleration group. Cone-beam computed tomography (CBCT) images were segmented and reconstructed using Mimics image processing software to assess the change of palatal morphology before and after treatment...
December 9, 2016: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/27974739/full-body-analysis-of-age-adjusted-alignment-in-adult-spinal-deformity-patients-and-lower-limb-compensation
#15
Cyrus M Jalai, Dana L Cruz, Bassel G Diebo, Gregory Poorman, Renaud Lafage, Shay Bess, Subaraman Ramachandran, Louis M Day, Shaleen Vira, Barthélemy Liabaud, Jensen K Henry, Frank J Schwab, Virginie Lafage, Peter G Passias
STUDY DESIGN: Single-center retrospective review. OBJECTIVE: This study evaluates the impact of increasing spinal deformity deviation from age-adjusted alignment ideals on lower extremity compensation. SUMMARY OF BACKGROUND DATA: Though current understanding of compensatory mechanisms in adult spinal deformity (ASD) is progressing due to full-body stereographic assessment, the impact of age-adjusted deformity targets on lower limb compensation remains unexamined...
August 23, 2016: Spine
https://www.readbyqxmd.com/read/27956292/surgical-indications-outcomes-and-complications-with-the-use-of-a-modified-capsular-tension-ring-during-cataract-surgery
#16
Bo Li, Yongjun Wang, Monali S Malvankar-Mehta, Cindy M L Hutnik
PURPOSE: To determine the surgical indications, outcomes, and complications with the use of modified capsular tension rings (CTRs) during cataract surgery. SETTING: Ivey Eye Institute, Western University, London, Ontario, Canada. DESIGN: Systematic review. METHODS: A systematic review of databases was conducted for studies related to the use of modified CTRs during cataract surgery that were published between 1992 and 2015...
November 2016: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/27927544/assessment-of-lowest-instrumented-vertebra-tilt-on-radiographic-measurements-in-lenke-c-modifier-curves-undergoing-selective-thoracic-fusion-in-adolescent-idiopathic-scoliosis
#17
David L Skaggs, Derek A Seehausen, Kent T Yamaguchi, Raymond J Hah, Margaret L Wright, David B Bumpass, Han J Kim, Lindsay M Andras, Michael G Vitale, Lawrence G Lenke
STUDY DESIGN: Multicenter, retrospective cohort study. OBJECTIVES: The purpose of this study is to determine how the amount of residual lowest instrumented vertebra (LIV) tilt correlates with radiographic measurements. SUMMARY OF BACKGROUND DATA: When performing a selective thoracic posterior spinal fusion for adolescent idiopathic scoliosis (AIS), the LIV may be tilted into the lumbar curve or made horizontal. METHODS: This is a multicenter retrospective study of 33 consecutive patients with AIS, Lenke types 1 to 4, lumbar modifier C, and a minimum follow-up of 2 years, who underwent selective thoracic posterior spinal fusions...
March 2016: Spine Deformity
https://www.readbyqxmd.com/read/27921205/consistent-pattern-in-positional-instability-of-polyfocal-full-optics-accommodative-iol
#18
Yu Cheol Kim, Kyung Tae Kang, Youngdo Yeo, Ki-San Kim, Frank S Siringo
PURPOSE: We describe cases of dislocation or subluxation of the WIOL-CF(®) polyfocal full-optics intraocular lens (IOL) and suggest a consistent pattern and possible mechanism for the IOL instability. METHODS: This is a retrospective case series of five consecutive eyes in three patients with WIOL-CF(®) IOL instability at Keimyung University Dongsan Medical Center and Kimkisan Eye Center from 2012 to 2014. The medical records and ocular exam data for these patients were analyzed...
December 5, 2016: International Ophthalmology
https://www.readbyqxmd.com/read/27911346/influence-of-pelvic-tilt-on-functional-acetabular-orientation
#19
Robert K Zahn, Sarah Grotjohann, Matthias Pumberger, Heiko Ramm, Stefan Zachow, Michael Putzier, Carsten Perka, Stephan Tohtz
BACKGROUND: Pelvic tilt influences acetabular orientation (AO). Anatomical AO can be measured in relation to the anterior pelvic plane (APP), functional AO can be calculated relative to table's plane. OBJECTIVE: To assess to what extent functional AO is determined by pelvic tilt and if APP and table plane give equal information for correct AO. METHODS: AO was evaluated by computed tomography (CT) scans of 138 patients. Pelvic tilt, anatomical and functional AO were measured, differences between the two reference planes were calculated...
November 25, 2016: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/27906943/fluoroscopic-sacroiliac-joint-injection-is-oblique-angulation-really-necessary
#20
Sandeep Khuba, Anil Agarwal, Sujeet Gautam, Sanjay Kumar
BACKGROUND: The conventional technique for sacroiliac (SI) joint injection involves aligning the anterior and posterior aspects of the SI joint under fluoroscopic guidance and then entering the SI joint in the most caudal aspect. OBJECTIVE: We wish to highlight that there is no added advantage to aligning both the anterior and posterior joint lines of the SI joint as it is time consuming, associated with additional radiation exposure, and may make the entry into the posterior SI joint technically more difficult...
November 2016: Pain Physician
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