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https://www.readbyqxmd.com/read/28632553/lumbar-retrolisthesis-in-aging-spine-what-are-the-associated-factors
#1
Feng Zhu, Hongda Bao, Zhen Liu, Zezhang Zhu, Shouyu He, Yong Qiu
STUDY DESIGN: A retrospective radiographic study. OBJECTIVE: The aim of this study is to demonstrate that lumbar retrolisthesis serves as an important compensatory mechanism and to identify the possible factor related to lumbar retrolisthesis. SUMMARY OF BACKGROUND DATA: Lumbar instability is one of the common degenerative changes, which presents as 2 radiologic features: anterolisthesis and retrolisthesis. Compared with the extensive studies on anterolisthesis, limit data are available on the characteristics and clinical relevance of lumbar retrolisthesis...
July 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28630728/parameters-for-assessment-of-the-inferior-acetabulum-morphology-in-300-adult-hips
#2
Munif A Hatem, Luiz A M da Cunha, João C M Abdo, Hal David Martin
The inferior acetabulum (IA) has been studied as a stabilizer of the hip in flexed positions with potential implications in femoroacetabular impingement and hip instability. However, there is a paucity of studies considering the normal morphology and parameters for assessment of the IA. The purpose of this study was to define parameters to assess the IA morphology and their normal range. Specifically, the objectives were to assess: (i) the width of the anterior horn (AH) and posterior horn (PH) of the acetabulum; (ii) the inclination of the articular surface of the AH angle (AHA) and PH angle (PHA) in the axial plane; (iii) the anterior opening angle of the IA and differences between genders...
January 2017: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/28611963/pelvic-insufficiency-fracture-in-severe-osteoporosis-patient
#3
Woong Chae Na, Sang Hong Lee, Sung Jung, Hyun Woong Jang, Suenghwan Jo
PURPOSE: To evaluate clinical features and the effect of parathyroid hormone (PTH) on treatment outcomes of patients with pelvic insufficiency fractures. MATERIALS AND METHODS: Fifteen patients diagnosed with pelvic insufficiency fractures were evaluated retrospectively. All patients had osteoporosis with mean lumbar T score of -3.9 (range, -3.1 to -6.4) and the mean age was 76.5 years. In all cases, simple radiography and computed tomography was used for final diagnosis; additional magnetic resonance imaging and technetium bone scans were used to confirm the diagnosis in 2 and 6 patients, respectively...
June 2017: Hip & Pelvis
https://www.readbyqxmd.com/read/28610768/intracranial-subarachnoid-fat-and-hemorrhage-secondary-to-sacral-fracture-with-spondylopelvic-dissociation
#4
J Carreres Polo, M V Álvarez Martínez, D Sánchez Mateos
We describe a case of fat droplets and blood in the cerebral subarachnoid space secondary in a patient with a complex sacral fracture without associated cranial trauma, a few days after admission. To our knowledge, there is only one published case with similar findings and without any other underlying lesion as cause. We explain the differences in the mechanism of production between this direct fat embolism and brain fat embolism syndrome, which is an intravascular embolism with different radiological appearance...
June 10, 2017: Radiología
https://www.readbyqxmd.com/read/28609701/the-3d-pelvic-inclination-correction-system-pics-a-universally-applicable-coordinate-system-for-isovolumetric-imaging-measurements-tested-in-women-with-pelvic-organ-prolapse-pop
#5
Caecilia S Reiner, Tom Williamson, Thomas Winklehner, Sean Lisse, Daniel Fink, John O L DeLancey, Cornelia Betschart
In pelvic organ prolapse (POP), the organs are pushed downward along the lines of gravity, so measurements along this longitudinal body axis are desirable. We propose a universally applicable 3D coordinate system that corrects for changes in pelvic inclination and that allows the localization of any point in the pelvis at rest or under dynamic conditions on magnetic resonance images (MRI) of pelvic floor disorders in a scanner- and software independent manner. The proposed 3D coordinate system called 3D Pelvic Inclination Correction System (PICS) is constructed utilizing four bony landmark points, with the origin set at the inferior pubic point, and three additional points at the sacrum (sacrococcygeal joint) and both ischial spines, which are clearly visible on MRI images...
June 3, 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/28602246/pressure-signatures-can-influence-tissue-response-for-individuals-supported-on-an-alternating-pressure-mattress
#6
C Y Chai, O Sadou, P R Worsley, D L Bader
Prolonged mechanical loading can lead to the breakdown of skin and underlying tissues which can, in turn, develop into a pressure ulcer. The benefits of pressure relief and/or redistribution to minimise risk have been well documented. Manufacturers have developed alternating air pressure mattresses (APAMs) to provide periodic relief for individuals on prolonged bed-rest. The present study describes the development of a control system, termed Pneumatic Manager which can vary the signature of an APAM, namely its pressure amplitude, cell profile and cycle period...
May 10, 2017: Journal of Tissue Viability
https://www.readbyqxmd.com/read/28585249/closure-of-the-vertebral-canal-in-human-embryos-and-fetuses
#7
Hayelom K Mekonen, Jill P J M Hikspoors, Greet Mommen, Nutmethee Kruepunga, S Eleonore Köhler, Wouter H Lamers
The vertebral column is the paradigm of the metameric architecture of the vertebrate body. Because the number of somites is a convenient parameter to stage early human embryos, we explored whether the closure of the vertebral canal could be used similarly for staging embryos between 7 and 10 weeks of development. Human embryos (5-10 weeks of development) were visualized using Amira 3D(®) reconstruction and Cinema 4D(®) remodelling software. Vertebral bodies were identifiable as loose mesenchymal structures between the dense mesenchymal intervertebral discs up to 6 weeks and then differentiated into cartilaginous structures in the 7th week...
June 5, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28582642/movement-of-the-sacroiliac-joint-during-the-active-straight-leg-raise-test-in-patients-with-long-lasting-severe-sacroiliac-joint-pain
#8
Thomas J Kibsgård, Stephan M Röhrl, Olav Røise, Bengt Sturesson, Britt Stuge
BACKGROUND: The Active Straight Leg Raise is a functional test used in the assessment of pelvic girdle pain, and has shown to have good validity, reliability and responsiveness. The Active Straight Leg Raise is considered to examine the patients' ability to transfer load through the pelvis. It has been hypothesized that patients with pelvic girdle pain lack the ability to stabilize the pelvic girdle, probably due to instability or increased movement of the sacroiliac joint. This study examines the movement of the sacroiliac joints during the Active Straight Leg Raise in patients with pelvic girdle pain...
May 29, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28578842/what-is-the-impact-of-a-spinal-fusion-on-acetabular-implant-orientation-in-functional-standing-and-sitting-positions
#9
Jean Y Lazennec, Ian C Clark, Dominique Folinais, Imen N Tahar, Aidin E Pour
BACKGROUND: This study used EOS imaging of primary total hip arthroplasty (THA) patients, with and without predating spinal fusion, to investigate (1) the impact of spinal fusion on acetabular implant anteversion and inclination, and (2) whether more extensive spinal fusion (fusion starting above the thoracolumbar junction or extension of fusion to the sacrum) affects acetabular implant orientation differently than lumbar only spinal fusion. METHODS: Ninety-three patients had spinal fusion (case group), and 150 patients were without spinal fusion (controls)...
May 5, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28578478/smooth-pursuits-decrease-balance-control-during-locomotion-in-young-and-older-healthy-females
#10
Neil M Thomas, Susan Dewhurst, Theodoros M Bampouras, Tim Donovan, Andrea Macaluso, Giuseppe Vannozzi
Dynamic balance control-characterised as movement of the trunk and lower limbs-was assessed during fixation of a fixed target, smooth pursuits and saccadic eye movements in ten young (22.9 ± 1.5 years) and ten older (72.1 ± 8.2 years) healthy females walking overground. Participants were presented with visual stimuli to initiate eye movements, and posture and gaze were assessed with motion analysis and eye tracking equipment. The results showed an increase in medial/lateral (ML) trunk movement (C7: p = 0...
June 3, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28573969/human-spiruridiasis-due-to-physaloptera-spp-nematoda-physalopteridae-in-a-grave-of-the-shahr-e-sukhteh-archeological-site-of-the-bronze-age-2800-2500-bc-in-iran
#11
Mahsasadat Makki, Jean Dupouy-Camet, Seyed Mansour Seyed Sajjadi, František Moravec, Saied Reza Naddaf, Iraj Mobedi, Hossein Malekafzali, Mostafa Rezaeian, Mehdi Mohebali, Faranak Kargar, Gholamreza Mowlavi
Evidence of rare human helminthiasis in paleoparasitological records is scarce. we report here the finding of Physaloptera spp. eggs in a soil sample collected in the pelvic and sacrum bones area of a skeleton excavated from a grave of Shahr-e Sukhteh archeological site dating back to the Bronze Age. The site is located in southeastern Iran and has attracted the attention of numerous archeological teams owing to its vast expanse and diverse archeological findings since 1997. The spirurid nematodes Physaloptera spp...
2017: Parasite: Journal de la Société Française de Parasitologie
https://www.readbyqxmd.com/read/28570255/editorial-message-just-because-it-s-red-doesn-t-mean-it-s-infected
#12
Walid Mari, Sara Younes, Richard Simman
Deep tissue injury (DTI) is an injury to the soft tissue under the skin due to pressure and is usually over boney prominence. This injury is commonly seen in bedridden patients in hospitals and nursing homes. Although many efforts were made to elucidate the precise mechanism and clinical presentation, the pathogenesis and the final clinical outcome are yet to be determined. Although the current agreed upon presentation describes DTI as purple- or maroon-colored skin with ulceration, presented herein is an unusual case where DTI presented with only erythema and induration over the sacrum and right gluteal area...
May 2017: Wounds: a Compendium of Clinical Research and Practice
https://www.readbyqxmd.com/read/28569184/large-schwannoma-of-the-femur-a-common-tumor-at-an-unusual-site-a-case-report-and-review-of-the-literature
#13
Niranthi Perera, Chandu de Silva, Vasantha Perera
BACKGROUND: Schwannomas are benign nerve sheath tumors and are most frequently encountered as soft tissue tumors of peripheral nerves of the head and neck or the extensor extremities. Osseous involvement is very uncommon with fewer than 200 cases described in the world literature, the majority of which arise in the skull (including mandible), vertebrae, and sacrum. Long bone involvement is highly unusual and of the approximately 20 cases described thus far, only five have been documented to arise in the femur...
May 31, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28555312/long-fusions-to-s1-with-or-without-pelvic-fixation-can-induce-relevant-acute-variations-in-pelvic-incidence-a-retrospective-cohort-study-of-adult-spine-deformity-surgery
#14
Riccardo Cecchinato, Andrea Redaelli, Carlotta Martini, Carlotta Morselli, Jorge Hugo Villafañe, Claudio Lamartina, Pedro Berjano
PURPOSE: The purpose of this study is to verify if any changes occur in pelvic incidence (PI) in adult patients undergoing long fusion to sacrum for spine deformity and to describe the effect of fixation to pelvis on these variations. METHODS: We conducted a cross sectional study. Sixty-six adults patients, 87% females (mean ± SD age: 65.1 ± 7.6 years), undergoing fusion from the thoracic spine to the sacrum for adult spine deformity were included. Patients were divided in two different groups: Group A: sacral fixation alone and Group B: sacral fixation plus pelvis fixation...
May 29, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28554810/limiting-interpedicularscrew-displacement-increases-shear-forces-in-screws-a-finite-element-study
#15
Lucas Venancio Pires Carvalho Lima, Yann Philippe Charles, Philippe Rouch, Wafa Skalli
BACKGROUND CONTEXT: Screw loosening has been reported for non-fusion devices. Forces on pedicle screws could be related to kinematic parameters as the Interpedicular Displacement (ID), which consists of the displacement between superior and inferior screw heads from full extension to full flexion PURPOSE: To investigate the relationship between ID and screw loosening for different designs of posterior implants using a finite element model. METHODS: An L3-Sacrum previously validated spine FE model was used...
May 26, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28549053/does-incremental-positioning-weight-shifts-reduce-pressure-injuries-in-critical-care-patients
#16
Lee Ann Krapfl, Julia Langin, Caitlin A Pike, Patricia Pezzella
BACKGROUND: Incremental positioning or weight shifts are often suggested as an alternative to standard repositioning/turning in critical care patients deemed clinically unstable. OBJECTIVE: This evidence-based report card reviews whether incremental positioning and/or weight shifts reduce hospital-acquired sacral/buttocks pressure injuries in critical care patients deemed too unstable to turn. METHODS AND SEARCH STRATEGY: A scoping review of the literature was conducted for studies related to repositioning and hospital-acquired pressure injuries in high-risk, critical care patients...
May 25, 2017: Journal of Wound, Ostomy, and Continence Nursing
https://www.readbyqxmd.com/read/28547931/laparoscopic-excision-of-neurogenic-retrorectal-tumors
#17
Tatsuya Manabe, Ryo Koba, Kinuko Nagayoshi, Yoshihiko Sadakari, Hayato Fujita, Shuntaro Nagai, Takashi Ueki, Eishi Nagai, Masafumi Nakamura
Retrorectal tumors (RT) are uncommon and usually managed by open surgical excision. Laparoscopic excision for RT has been reported in only a small number of papers. We aimed to assess the laparoscopic approach for RT and to discuss the factors that made this procedure difficult. We performed laparoscopic excision using a five-trocar technique for neurogenic RT in three patients. Tumors were successfully excised laparoscopically in two patients. However, the third patient required open conversion because the tumor was strongly adhered to the sacrum and could not be mobilized by dissection, resulting in poor visualization of the dissected site...
May 2017: Asian Journal of Endoscopic Surgery
https://www.readbyqxmd.com/read/28543392/mechanical-analysis-of-the-vascularized-fibular-graft-prosthetic-composite-vfgpc-for-internal-hemipelvectomy-reconstruction
#18
Jonathan Morris, Rui Yang, Michael Roth, Jonathan Gill, Richard Gorlick, Yungtai Lo, Bang H Hoang, Evan Garfein, David S Geller
INTRODUCTION: The vascularized fibular graft prosthetic composite (VFGPC) is used for reconstruction after internal hemipelvectomy. The purpose of this study was to create a mathematical model that calculates the mechanical effects of the vascularized fibular graft on the VFGPC. METHODS: The effects of the VFG positioning were calculated based on three-dimensional static analyzes to determine the direction, magnitude, and distribution of the forces through the prosthesis and VFG...
May 22, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28538593/dynamic-response-of-the-lumbar-spine-to-whole-body-vibration-under-a-compressive-follower-preload
#19
Li-Xin Guo, Wei Fan
STUDY DESIGN: A finite element study of dynamic response of the lumbar spine to whole-body vibration. OBJECTIVE: To develop and validate a finite element model for exploring the impact of whole-body vibration on the entire lumbar spine with a compressive follower preload applied. SUMMARY OF BACKGROUND DATA: Several finite element studies have investigated the biodynamic characteristics of the human lumbar spine when exposed to whole-body vibration...
May 22, 2017: Spine
https://www.readbyqxmd.com/read/28535399/dry-skin-and-pressure-ulcer-risk-a-multi-center-cross-sectional-prevalence-study-in-german-hospitals-and-nursing-homes
#20
Anna Lechner, Nils Lahmann, Konrad Neumann, Ulrike Blume-Peytavi, Jan Kottner
BACKGROUND: Pressure ulcers are a serious health problem in medical and nursing care. Therefore, effective prevention is crucial. Major pressure ulcer risk factors have been identified but the particular role of dry skin (xerosis cutis) is unclear. OBJECTIVES: To investigate possible associations between dry skin and pressure ulcers focusing on the sacrum/trochanter and at heel/ankle skin areas. DESIGN: Two multicenter cross-sectional studies...
May 18, 2017: International Journal of Nursing Studies
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