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Pelvic stability

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https://www.readbyqxmd.com/read/28342586/biomechanical-analysis-of-the-fixation-systems-for-anterior-column-and-posterior-hemi-transverse-acetabular-fractures
#1
Jianyin Lei, Pengfei Dong, Zhiqiang Li, Feng Zhu, Zhihua Wang, Xianhua Cai
OBJECTIVE: The aim of this study was to evaluate the biomechanical properties of common fixation systems for complex acetabular fractures. METHODS: A finite element (FE) pelvic model with anterior column and posterior hemi-transverse acetabular fractures was created. Three common fixation systems were used to fix the posterior wall acetabular fractures: 1. Anterior column plate combined with posterior column screws (group I), 2. Anterior column plate combined with quadrilateral area screws (group II) and 3...
March 22, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28328567/effects-of-a-simulated-game-on-upper-extremity-pitching-mechanics-and-muscle-activations-among-various-pitch-types-in-youth-baseball-pitchers
#2
Gretchen D Oliver, Hillary Plummer, Lisa Henning, Michael Saper, Gabrielle Glimer, Allison Brambeck, James R Andrews
BACKGROUND: Throwing requires proper stability and orientation of the pelvis and scapula for efficient energy transfer during pitching. Fatigue of the pelvis and scapular musculature throughout the course of a game can impair pitching performance, and place excessive demands on the throwing arm leading to injury. The purpose of this study was to examine differences in pelvis, torso, and upper extremity pitching mechanics and muscle activations between the fastball, change-up, and curveball pitches in youth baseball pitchers following a simulated game...
March 21, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28318990/junctional-hemorrhage-control-for-tactical-combat-casualty-care
#3
REVIEW
Russ S Kotwal, Frank K Butler
During historic, as well as more recent, conflicts, most combat casualties who die from their injuries do so in the prehospital setting. Although many of the injuries incurred by these casualties are nonsurvivable, a number of injuries are still potentially survivable. Of those injuries that are potentially survivable, the majority are truncal, junctional, and extremity hemorrhage. Novel and effective approaches directed toward prehospital hemorrhage control have emerged in recent years, some of which can prove useful in the management of junctional hemorrhage whether in a military or civilian setting...
March 16, 2017: Wilderness & Environmental Medicine
https://www.readbyqxmd.com/read/28297181/the-biomechanical-and-energetic-advantages-of-a-mediolaterally-wide-pelvis-in-women
#4
Cara M Wall-Scheffler, Marcella J Myers
Here, we argue that two key shifts in thinking are required to more clearly understand the selection pressures shaping pelvis evolution in female hominins: (1) the primary locomotor mode of female hominins was loaded walking in the company of others, and (2) the periodic gait of human walking is most effectively explained as a biomechanically controlled process related to heel-strike collisions that is tuned for economy and stability by properly-timed motor inputs (a model called dynamic walking). In the light of these two frameworks, the evidence supports differences between female and male upper-pelvic morphology being the result of the unique reproductive role of female hominins, which involved moderately paced, loaded walking in groups...
April 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28286623/effective-management-of-bone-fractures-with-the-illuminoss%C3%A2-photodynamic-bone-stabilization-system-initial-clinical-experience-from-the-european-union-registry
#5
Thomas Gausepohl, Dietmar Pennig, Steffen Heck, Sascha Gick, Paul A Vegt, Jon E Block
The IlluminOss(®) system (IS) uses a light-curable polymer contained within an inflatable balloon catheter, forming a patient customized intramedullary implant. A registry was established in Germany and The Netherlands to prospectively collect technical and clinical outcomes in patients treated with IS for fractures of the phalange, metacarpal, radius, ulna, distal radius, fibula, clavicle and/or olecranon. Humeral, femoral, tibial and pelvic fractures were included under compassionate use. Procedural success included successful placement of the device at the target fracture site and achievement of fracture stabilization...
February 20, 2017: Orthopedic Reviews
https://www.readbyqxmd.com/read/28270223/biomechanical-characteristics-of-fixation-methods-for-floating-pubic-symphysis
#6
Wenhao Song, Dongsheng Zhou, Yu He
BACKGROUND: Floating pubic symphysis (FPS) is a relatively rare injury caused by high-energy mechanisms. There are several fixation methods used to treat FPS, including external fixation, subcutaneous fixation, internal fixation, and percutaneous cannulated screw fixation. To choose the appropriate fixation, it is necessary to study the biomechanical performance of these different methods. The goal of this study was to compare the biomechanical characteristics of six methods by finite element analysis...
March 7, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28243380/patient-reported-outcomes-from-sacroiliac-joint-fusion
#7
Vamsi K Kancherla, Shane M McGowan, Brittany N Audley, Gbolabo Sokunbi, Steven T Puccio
STUDY DESIGN: Retrospective, case series. PURPOSE: The purpose of this study is to determine morbidity, complications, and patient reported outcomes from minimally invasive sacroiliac joint (SIJ) fusion. OVERVIEW OF LITERATURE: Lumbar back pain emanating from the SIJ can be surgically treated via a percutaneous approach in the appropriately selected patient with minimal morbidity and acceptable functional outcomes. METHODS: Patients diagnosed by >2 physical examination maneuvers and subjective relief from a computed tomography-guided lidocaine-bupivacaine-steroid injection underwent SIJ fusion after failing conservative management with a combination of oral anti-inflammatory medications, physical therapy, and pelvic belt stabilization...
February 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/28236073/complications-after-percutaneous-internal-fixator-for-anterior-pelvic-ring-injuries
#8
Christian Fang, Hatem Alabdulrahman, Hans-Christophe Pape
OBJECTIVES: The aim of the study is to report on the observed incidence of complications following pedicle screw and rod internal fixator (INFIX) stabilization of pelvic ring fractures. METHODS: In a retrospective review of consecutive patient series conducted in a University level 1 trauma hospital, 43 patients (21 female and eight male), mean age 64.2 (range 16-87) with OTA/AO type B or C pelvic ring fractures received percutaneous pedicle screw and rod internal fixator (INFIX) anterior stabilization of pelvic ring fractures; 29 fulfilled inclusion criteria with three months' minimal follow-up or known complication...
February 24, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28222811/recurring-septic-shock-in-a-patient-with-blunt-abdominal-and-pelvic-trauma-how-mandatory-is-source-control-surgery-a-case-report
#9
Antonella Frattari, Giustino Parruti, Rocco Erasmo, Luigi Guerra, Ennio Polilli, Rosamaria Zocaro, Giuliano Iervese, Paolo Fazii, Tullio Spina
BACKGROUND: In critically ill patients with colonization/infection of multidrug-resistant organisms, source control surgery is one of the major determinants of clinical success. In more complex cases, the use of different tools for sepsis management may allow survival until complete source control. CASE PRESENTATION: A 42-year-old white man presented with traumatic hemorrhagic shock. Unstable pelvic fractures led to emergency stabilization surgery. Fever ensued with diarrhea, followed by septic shock...
February 22, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28199880/is-pelvic-fixation-the-only-option-to-provide-additional-stability-to-the-sacral-anchorage-in-long-lumbar-instrumentation-a-comparative-biomechanical-study-of-new-techniques
#10
David Volkheimer, Heiko Reichel, Hans-Joachim Wilke, Friederike Lattig
BACKGROUND: Supplementary iliac screws have the highest potential to protect S1-pedicle-screws from loosening in long fusion constructs. However, this technique bridges the iliosacral joint with potential disadvantages for the patient. This study aimed to evaluate if two different established fixation techniques can be used in addition to pedicle screws as alternative to iliac screws, and if these two techniques can provide similar stability when S1-pedicle-screws are loosened. METHODS: Flexibility testing with pure moments of 7...
February 8, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28185875/salvage-stereotactic-body-radiotherapy-for-isolated-lymph-node-recurrent-prostate-cancer-single-institution-series-of-94-consecutive-patients-and-124-lymph-nodes
#11
Barbara Alicja Jereczek-Fossa, Giuseppe Fanetti, Cristiana Fodor, Delia Ciardo, Luigi Santoro, Claudia Maria Francia, Matteo Muto, Alessia Surgo, Dario Zerini, Giulia Marvaso, Giorgia Timon, Paola Romanelli, Elena Rondi, Stefania Comi, Federica Cattani, Federica Golino, Stefano Mazza, Deliu Victor Matei, Matteo Ferro, Gennaro Musi, Franco Nolè, Ottavio de Cobelli, Piet Ost, Roberto Orecchia
BACKGROUND: The purpose of the study was to evaluate the prostate serum antigen (PSA) response, local control, progression-free survival (PFS), and toxicity of stereotactic body radiotherapy (SBRT) for lymph node (LN) oligorecurrent prostate cancer. PATIENTS AND METHODS: Between May 2012 and October 2015, 124 lesions were treated in 94 patients with a median dose of 24 Gy in 3 fractions. Seventy patients were treated for a single lesion and 25 for > 1 lesion...
January 11, 2017: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/28174437/the-effects-of-a-pelvic-belt-on-trunk-and-lower-extremity-muscles-in-the-bridge-position
#12
Hyun-Gyu Cha, Yan-Ting Wu, Myoung-Kwon Kim
[Purpose] The purpose of this study was to investigate the effects of a pelvic belt on the activities of trunk and lower extremity muscles in normal adults. [Subjects and Methods] The subjects were 20 normal individuals without a history of orthopedic problems. The pelvic compression belt (The Com-Pressor, OPTP, Minneapolis, MN, USA) was an adjustable body belt with four elastic compression bands that provide stabilizing pressure and was designed to adjust the amount of force applied and to alter sites of compression...
December 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28157085/surgical-strategy-in-intra-pelvic-cup-migration-during-total-hip-arthroplasty-a-case-study
#13
Andrzej Pozowski, Mateusz Kowal, Jadwiga Kuciel Lewandowska, Małgorzata Paprocka Borowicz
We report the case of a 63-year-old female patient referred to our department due to an early postoperative complication resulting from intraoperative fault. During the preparation of a bone socket for the acetabular cup, the acetabular fossa was broken, forming an extensive segmental defect of the diameter of the reamer used. An attempt to stabilize the acetabular prosthesis using bone cement without repairing the bone defect was ineffective and inappropriate. During the deposition of the acetabular prosthesis on the cement, much of the cement was pushed beyond the outline of the bony acetabulum...
May 5, 2016: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28153459/total-hip-arthroplasty-in-the-spinal-deformity-population-does-degree-of-sagittal-deformity-affect-rates-of-safe-zone-placement-instability-or-revision
#14
Edward M DelSole, Jonathan M Vigdorchik, Ran Schwarzkopf, Thomas J Errico, Aaron J Buckland
BACKGROUND: Changes in spinal alignment and pelvic tilt alter acetabular orientation in predictable ways, which may have implications on stability of total hip arthroplasty (THA). Patients with sagittal spinal deformity represent a subset of patients who may be at particularly high risk of THA instability because of postural compensation for abnormal spinal alignment. METHODS: Using standing stereoradiography, we evaluated the spinopelvic parameters, acetabular cup anteversion, and inclination of 139 THAs in 107 patients with sagittal spinal deformity...
December 27, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28121933/successful-treatment-of-metastatic-pheochromocytoma-in-the-spine-with-cement-augmentation
#15
Siyi Cai, Xiangyi Kong, Chengrui Yan, Yong Liu, Xi Zhou, Guixing Qiu
Metastatic pheochromocytoma in the spine is rare, and there is no standard curative management. Treatment via open surgery is often risky in the perioperative period, while osteoplasty by cement augmentation is a less invasive option.We describe 2 patients with recurrence of pheochromocytoma involving the spine and the pelvis who were successfully treated with osteoplasty by cement augmentation. A 31-year-old female underwent cement augmentation for a pelvic lesion 6 months after the resection and screw fixation of an L3 lesion...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28115984/pelvic-trauma-wses-classification-and-guidelines
#16
REVIEW
Federico Coccolini, Philip F Stahel, Giulia Montori, Walter Biffl, Tal M Horer, Fausto Catena, Yoram Kluger, Ernest E Moore, Andrew B Peitzman, Rao Ivatury, Raul Coimbra, Gustavo Pereira Fraga, Bruno Pereira, Sandro Rizoli, Andrew Kirkpatrick, Ari Leppaniemi, Roberto Manfredi, Stefano Magnone, Osvaldo Chiara, Leonardo Solaini, Marco Ceresoli, Niccolò Allievi, Catherine Arvieux, George Velmahos, Zsolt Balogh, Noel Naidoo, Dieter Weber, Fikri Abu-Zidan, Massimo Sartelli, Luca Ansaloni
Complex pelvic injuries are among the most dangerous and deadly trauma related lesions. Different classification systems exist, some are based on the mechanism of injury, some on anatomic patterns and some are focusing on the resulting instability requiring operative fixation. The optimal treatment strategy, however, should keep into consideration the hemodynamic status, the anatomic impairment of pelvic ring function and the associated injuries. The management of pelvic trauma patients aims definitively to restore the homeostasis and the normal physiopathology associated to the mechanical stability of the pelvic ring...
2017: World Journal of Emergency Surgery: WJES
https://www.readbyqxmd.com/read/28111126/rigid-patient-positioning-is-unreliable-in-total-hip-arthroplasty
#17
Michael T Milone, Ran Schwarzkopf, Patrick A Meere, Kaitlin M Carroll, Seth A Jerabek, Jonathan Vigdorchik
BACKGROUND: To our knowledge, no study has assessed the ability of rigid patient positioning devices to afford arthroplasty surgeons with ideal acetabular orientation throughout surgery. The purpose of this study is to use robotic arm-assisted computer navigation to assess the reliability of pelvic position in total hip arthroplasty performed on patients positioned with rigid positioning devices. METHODS: A prospective cohort of 100 hips (94 patients) underwent robotic-guided total hip arthroplasty in the lateral decubitus position from the posterior approach, 77 stabilized by universal lateral positioner, and 23 by peg board...
December 27, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28074359/pharmacological-management-of-chronic-pelvic-pain-in-women
#18
REVIEW
Erin T Carey, Sara R Till, Sawsan As-Sanie
Chronic pelvic pain (CPP) is a multifaceted condition that often has both peripheral and central generators of pain. An understanding of neurobiology and neuropsychology of CPP should guide management. Successful treatment of CPP is typically multimodal, and pharmacologic treatment strategies include analgesics, hormonal suppression, anesthetics, antidepressants, membrane stabilizers, and anxiolytics. Evidence for these and other emerging pharmacologic therapies is presented in this article.
January 10, 2017: Drugs
https://www.readbyqxmd.com/read/28057632/are-two-retrograde-3-5-mm-screws-superior-to-one-7-3-mm-screw-for-anterior-pelvic-ring-fixation-in-bones-with-low-bone-mineral-density
#19
Y P Acklin, I Zderic, S Grechenig, R G Richards, P Schmitz, B Gueorguiev
OBJECTIVES: Osteosynthesis of anterior pubic ramus fractures using one large-diameter screw can be challenging in terms of both surgical procedure and fixation stability. Small-fragment screws have the advantage of following the pelvic cortex and being more flexible.The aim of the present study was to biomechanically compare retrograde intramedullary fixation of the superior pubic ramus using either one large- or two small-diameter screws. MATERIALS AND METHODS: A total of 12 human cadaveric hemipelvises were analysed in a matched pair study design...
January 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28053843/influence-of-obesity-on-postural-stability-in-young-adults
#20
Sung Min Son
OBJECTIVES: The purpose of this study was to determine whether obesity is associated with less postural stability in young adults, and whether it is influenced by anterior pelvic tilt angle and sensory dysfunction. METHODS: Center of gravity (COG) velocity and total sway distance with eyes open or eyes closed on firm or foam floors were determined in 12 obese individuals and 12 individuals with normal weight. RESULTS: On firm and foam floors with eyes closed, center of gravity velocity and total sway distance were significantly greater in the obese group than in the normal-weight group...
December 2016: Osong Public Health and Research Perspectives
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