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Pelvic stability

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https://www.readbyqxmd.com/read/29652243/dorsal-rhizotomy-for-children-with-spastic-diplegia-of-cerebral-palsy-origin-usefulness-of-intraoperative-monitoring
#1
George Georgoulis, Andrei Brînzeu, Marc Sindou
OBJECTIVE The utility of intraoperative neuromonitoring (ION), namely the study of muscle responses to radicular stimulation, remains controversial. The authors performed a prospective study combining ventral root (VR) stimulation for mapping anatomical levels and dorsal root (DR) stimulation as physiological testing of metameric excitability. The purpose was to evaluate to what extent the intraoperative data led to modifications in the initial decisions for surgical sectioning established by the pediatric multidisciplinary team (i...
April 13, 2018: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29643712/surgical-results-of-a-one-stage-combined-anterior-lumbosacral-fusion-and-posterior-percutaneous-pedicle-screw-fixation
#2
Chien-Yuan Huang, Kuang-Ting Yeh, Tzai-Chiu Yu, Ru-Ping Lee, Ing-Ho Chen, Cheng-Huan Peng, Kuan-Lin Liu, Jen-Hung Wang, Wen-Tien Wu
Objectives: Lumbosacral fusion through either an anterior or a posterior approach to achieve good lordosis and stability is always a challenging surgical operation and is often accompanied by a higher rate of pseudarthrosis than when other lumbar segments are involved. This study evaluated the clinical and radiological results of lumbosacral fusions achieved through a combined anterior and posterior approach. Materials and Methods: From June 2008 to 2012, 20 patients who had L5-S1 instability and stenosis were consecutively treated, first by anterior interbody fusion using an allogenous strut bone graft through the pararectus approach and then by posterior pedicle screw fixation...
January 2018: Ci Ji Yi Xue za Zhi, Tzu-chi Medical Journal
https://www.readbyqxmd.com/read/29643588/effect-of-lumbar-stabilization-exercise-on-disc-herniation-index-sacral-angle-and-functional-improvement-in-patients-with-lumbar-disc-herniation
#3
Dae-Keun Jeong, Hyun-Ho Choi, Jeong-Il Kang, Hyun Choi
[Purpose] This study aimed to examine the effects of pelvic movements on the back function of patients with lumbar disc herniation when lumbar stabilization exercise was applied to the patients, suggest an intervention method that can be used in future clinical therapies. [Subjects and Methods] Thirty patients with lumbar disc herniation underwent the intervention 30 minutes per day, three times per week for 4 weeks. Of them, 15 patients were assigned to the balance center stabilization resistance exercise group (experimental group I) and the other 15 were assigned to the three-dimensional stabilization exercise group (experimental group II)...
December 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29618349/3d-printing-based-minimally-invasive-cannulated-screw-treatment-of-unstable-pelvic-fracture
#4
Leyi Cai, Yingying Zhang, Chunhui Chen, Yiting Lou, Xiaoshan Guo, Jianshun Wang
BACKGROUND: Open reduction and internal fixation of pelvic fractures could restore the stability of the pelvic ring, but there were several problems. Minimally invasive closed reduction cannulated screw treatment of pelvic fractures has lots advantages. However, how to insert the cannulated screw safely and effectively to achieve a reliable fixation were still hard for orthopedist. Our aim was to explore the significance of 3D printing technology as a new method for minimally invasive cannulated screw treatment of unstable pelvic fracture...
April 4, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29610337/human-bony-labyrinth-is-an-indicator-of-population-history-and-dispersal-from-africa
#5
Marcia S Ponce de León, Toetik Koesbardiati, John David Weissmann, Marco Milella, Carlos S Reyna-Blanco, Gen Suwa, Osamu Kondo, Anna-Sapfo Malaspinas, Tim D White, Christoph P E Zollikofer
The dispersal of modern humans from Africa is now well documented with genetic data that track population history, as well as gene flow between populations. Phenetic skeletal data, such as cranial and pelvic morphologies, also exhibit a dispersal-from-Africa signal, which, however, tends to be blurred by the effects of local adaptation and in vivo phenotypic plasticity, and that is often deteriorated by postmortem damage to skeletal remains. These complexities raise the question of which skeletal structures most effectively track neutral population history...
April 2, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29574485/vaginal-hysterectomy-with-apical-fixation-and-anterior-vaginal-wall-repair-for-prolapse-surgical-technique-and-medium-term-results
#6
Juliane Marschke, Carlo Michael Pax, Kathrin Beilecke, Frank Schwab, Ralf Tunn
INTRODUCTION AND HYPOTHESIS: Stabilization of the vaginal apex (level 1) is an important component of operations to correct pelvic organ prolapse (POP). We report functional and anatomical results and patient-reported outcomes of our technique of vaginal vault fixation at the time of vaginal hysterectomy. METHODS: One hundred and nine patients-mean 69 years, range 50.4-83.8; body mass index (BMI) 26.3, range 17.7-39.5-with symptomatic stage 2-3 uterine prolapse combined with stage 3-4 cystocele underwent vaginal hysterectomy with anterior vaginal wall repair; the apex was formed with high closure of the peritoneum and incorporation of the uterosacral and round ligaments...
March 24, 2018: International Urogynecology Journal
https://www.readbyqxmd.com/read/29564309/current-medical-treatment-of-uterine-fibroids
#7
REVIEW
Geum Seon Sohn, SiHyun Cho, Yong Man Kim, Chi-Heum Cho, Mee-Ran Kim, Sa Ra Lee
Uterine fibroids (leiomyomas or myomas), benign monoclonal tumors, are the most common benign tumors in women. Heavy or prolonged menstrual bleeding, abnormal uterine bleeding, resultant anemia, pelvic pain, infertility, and/or recurrent pregnancy loss are generally associated with uterine fibroids. Although curative treatment of this tumor relies on surgical therapies, medical treatments are considered the first-line treatment to preserve fertility and avoid or delay surgery. The aim of this review is to provide available and emerging medical treatment options for symptomatic uterine fibroids...
March 2018: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/29560395/intraoperative-femoral-head-dislodgement-during-total-hip-arthroplasty-a-report-of-four-cases
#8
Ahmed Siddiqi, Carl T Talmo, James V Bono
Dislodgment of trial femoral heads and migration into the pelvis during total hip arthroplasty is a rarely reported complication with limited published cases. There are three primary mechanisms of femoral head separation: dislodgement during reduction attempt, disassociation from anterior dislocation while assessing anterior stability, and during dislocation after implant trialing. If the trial femoral migrates beyond the pelvic brim, it is safer to finish the total hip arthroplasty and address the retained object after repositioning or in a planned second procedure with a general surgeon...
March 2018: Arthroplasty Today
https://www.readbyqxmd.com/read/29554909/pelvic-modelling-and-the-comparison-between-plate-position-for-double-pelvic-osteotomy-using-artificial-cancellous-bone-and-finite-element-analysis
#9
William McCartney, Bryan MacDonald, Ciprian Andrei Ober, Rubén Lostado-Lorza, Fátima Somovilla Gómez
BACKGROUND: Finite element analysis was used to compare fixation methods for double pelvic osteotomy (DPO). Using 3D scanning a stereolithography (stl) image was produced of a canine pelvis and this was subsequently refined in computer aided design (CAD). Using the CAD files, the images were imported in MSC Marc software to produce a working finite element (FE) model with 3 dimensional tetrahedral elements with linear shaped functions. The dimensions of a precontoured pelvic osteotomy plate with eight screws and a twisted seven screw straight plate were used to build the 2 fixations implants for the FE models...
March 20, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29553943/the-accurate-free-hand-placement-of-s2-alar-iliac-s2ai-screw
#10
Taolin Fang, Glenn S Russo, Gregory D Schroeder, Christopher K Kepler
Achieving an osseous fusion across the lumbosacral spine is still challenging in spine surgery. For the long multisegmental fusion surgery, it is crucial to build a robust and substantial foundation, which sometimes necessitates the distal spinal fixation to the pelvis. The pelvic fixation technique involves advancing the screw through the alar, thereby providing more purchase across the sacroiliac joint and into the ilium. The S2 alar iliac screws can obtain immediate stability and proper biomechanical strength of constructs...
March 16, 2018: Clinical Spine Surgery
https://www.readbyqxmd.com/read/29530426/the-significance-and-evolution-of-menstruation
#11
REVIEW
John Jarrell
Historically, the evolutionary origins of menstruation have been based on two theories: the ability to eliminate infectious agents carried to the uterus with spermatozoa and the comparative conservation of energy with menstruation compared to its absence. In the menstruating species, more recent theories have identified spontaneous decidualization as the key adaptive mechanism. Spontaneous decidualization is seen as a mechanism to provide the mother with protection from the invasive characteristics of the embryo...
February 8, 2018: Best Practice & Research. Clinical Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/29530093/femorotibial-kinematics-in-dogs-with-cranial-cruciate-ligament-insufficiency-a-three-dimensional-in-vivo-fluoroscopic-analysis-during-walking
#12
Selena Tinga, Stanley E Kim, Scott A Banks, Stephen C Jones, Brian H Park, Antonio Pozzi, Daniel D Lewis
BACKGROUND: Cranial cruciate ligament (CrCL) insufficiency is a degenerative condition that is a common cause of pelvic limb lameness and osteoarthritis in dogs. Surgical therapies developed to treat dogs with naturally occurring CrCL insufficiency aim to address the resultant instability, but the in-vivo alterations in stifle kinematics associated with CrCL insufficiency have not been accurately defined. The objective of this study was to quantify the 3-dimensional femorotibial joint kinematics of dogs with naturally occurring cranial cruciate ligament (CrCL) insufficiency during ambulation...
March 12, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29529664/the-safe-zone-range-for-cup-anteversion-is-narrower-than-for-inclination-in-tha
#13
William S Murphy, Ho Hyun Yun, Brett Hayden, Jens H Kowal, Stephen B Murphy
BACKGROUND: Cup malposition is a common cause of impingement, limitation of ROM, acceleration of bearing wear, liner fracture, and instability in THA. Previous studies of the safe zone based on plain radiographs have limitations inherent to measuring angles from two-dimensional projections. The current study uses CT to measure component position in stable and unstable hips to assess the presence of a safe zone for cup position in THA. QUESTIONS/PURPOSES: (1) Does acetabular component orientation, when measured on CT, differ in stable components and those revised for recurrent instability? (2) Do CT data support historic safe zone definitions for component orientation in THA? METHODS: We identified 34 hips that had undergone revision of the acetabulum for recurrent instability that also had a CT scan of the pelvis between August 2003 and February 2017...
February 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29526070/sacral-insufficiency-fractures-how-to-classify
#14
Gesa Bakker, Joerg Hattingen, Hartmut Stuetzer, Joerg Isenberg
OBJECTIVE: The diagnosis of insufficiency fractures of the sacrum in an elder population increases annually. Fractures show very different morphology. We aimed to classify sacral insufficiency fractures according to the position of cortical break and possible need for intervention. METHODS: Between January 1, 2008 and December 31, 2014, all patients with a proven fracture of the sacrum following a low-energy or an even unnoticed trauma were prospectively registered : 117 females and 13 males...
March 2018: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/29525232/why-owners-choose-an-orthosis-over-stifle-surgery-for-canine-cranial-cruciate-ligament-deficiency
#15
Gina E Bertocci, Nathan P Brown, Patrice M Mich
The objective of this study was to describe the patient population of dogs with cranial cruciate ligament (CrCL) deficiency that were prescribed a stifle orthosis. A total of 215 client-owned dogs with previously diagnosed CrCL deficiency were prescribed a stifle orthosis at a veterinary pain management and mobility clinic. Patient intake data collected included dog signalment, chief medical complaint, home environment and activity description, medical and surgical history, and diagnosing veterinarian. An orthopedic examination was conducted to assess pelvic limb function and determine pelvic limb morphologic measures...
December 2017: Topics in Companion Animal Medicine
https://www.readbyqxmd.com/read/29523196/2-deoxy-2-18-fluoro-d-glucose-pet-ct-18fdg-pet-ct-may-not-be-a-viable-biomarker-in-pompe-disease
#16
U Plöckinger, V Prasad, A Ziagaki, N Tiling, A Poellinger
BACKGROUND: Pompe disease (PD) is an autosomal recessive, lysosomal storage disease due to a mutation of the acid α-glucosidase (GAA) gene. In adult patients, PD is characterized by slowly progressive limb-girdle and trunk myopathy and restrictive respiratory insufficiency. Enzyme replacement therapy (ERT) is available, improving or stabilizing muscle-function in some and slowing deterioration in other patients. Unfortunately, there is no biomarker available to indicate therapeutic efficacy and/or disease activity...
March 9, 2018: Human Genomics
https://www.readbyqxmd.com/read/29515395/synchronous-primary-renal-cell-carcinoma-and-pancreatic-ductal-adenocarcinoma-case-report-and-literature-review
#17
Tarik Mahfoud, Rachid Tanz, Mohamed Réda Khmamouche, Mohamed Allaoui, Rhizlane Belbaraka, Mouna Khouchani, Mohamed Ichou
Synchronous primary cancers involving the pancreas and kidney are extremely rare and poorly documented. We report the first case of this association treated with chemotherapy and tyrosine kinase inhibitor. A 70-year-old woman presented with a 2-month history of epigastric pain with weight loss of 12 kg. Two weeks previously, she had presented with jaundice and pelvic pain. A computed tomography (CT) scan of the body revealed the presence of an irregular mass in the body of the pancreas, encasing the celiac trunk, with dilatation of the biliary tract...
September 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/29510280/surgical-management-of-lumbosacral-giant-invasive-spinal-schwannoma-a-case-report-and-literature-review
#18
Danika Paulo, Alexa Semonche, Rachana Tyagi
BACKGROUND: Giant invasive spinal schwannomas (GISS) comprise a rare, specific subtype of schwannomas that extend over two spinal levels, erode vertebral bodies and invade extraspinal tissues. Optimal surgical management of resulting spinal instability has yet to be determined, and overall there is limited published literature on GISS. We report an innovative method used to treat a rare case of lumbosacral GISS using a triangular frame reconstruction to reconnect the spinal column to the pelvis after tumor debulking...
March 3, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29508007/-complications-of-the-lumbosacral-junction-in-adult-deformity-surgery-indications-and-technique-for-posterior-and-anterior-revision-surgery
#19
REVIEW
A Tateen, J Bogert, H Koller, A Hempfing
BACKGROUND: Surgical correction of ASD can be challenging. The indication for surgery is individual and after specification of the therapeutic goals, detailed planning of the surgery is essential to achieve a good postoperative result. COMPLICATIONS AND INDICATION: The reasons for the comparatively high complication rate are well investigated and are often located at the lumbosacral junction. In addition to negative general factors like osteoporosis, especially undercorrection of the sagittal profile and insufficient lumbo-pelvic stabilization are causative...
March 5, 2018: Der Orthopäde
https://www.readbyqxmd.com/read/29494822/reduction-of-frontal-plane-knee-load-caused-by-lateral-trunk-lean-depends-on-step-width
#20
Jennifer Anderson, Stephanie King, Andrzej Przybyla, Lakshminarayan Ranganath, Gabor Barton
The internal knee abduction moment (KAM) in osteoarthritis is reduced by increased lateral trunk lean (TL). Mechanistically, this occurs as the Centre of Mass (COM) moves further over the stance leg. Since the size of the base of support constrains the COM, an associated increase in step width (SW) would be expected to maintain stability. This study tested the effects of TL on SW and KAM in healthy participants (n = 21) who performed normal and 6° TL walks. The latter was controlled via audio-visual biofeedback...
February 21, 2018: Gait & Posture
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