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anterior pelvic tilt

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https://www.readbyqxmd.com/read/29322899/is-the-pelvis-stable-during-supine-total-hip-arthroplasty
#1
S M Shah, W L Walter, J Ngo
Intra- operative changes in pelvic position during total hip arthroplasty (THA) can affect acetabular orientation. We evaluated these changes during supine THA using a proprietary mobile application called PelvicTracker. Twenty- two patients undergoing THA using direct anterior approach were included in the study. In the sagittal plane, the pelvis was extended (anterior tilt) as compared to the start of surgery in 19/ 22 hips at the time of cup implantation (mean extension: 3.1°; range: 1°-6°). In the transverse plane, the pelvis was rolled to the opposite side of surgery in 12 hips (mean roll: 2...
March 2017: Acta Orthopaedica Belgica
https://www.readbyqxmd.com/read/29320923/the-effect-of-seated-pelvic-tilt-on-posterior-edge-loading-in-total-hip-arthroplasty-a-finite-element-investigation
#2
Jim Pierrepont, Long Yang, Jevan Arulampalam, Catherine Stambouzou, Brad Miles, Qing Li
Edge-loading of a ceramic-on-ceramic total hip replacement can lead to reproducible squeaking and revision. A patient's functional acetabular cup orientation, driven by their pelvic tilt, has been shown to be a significant factor in squeaking during hip flexion. The aim of this study was to investigate the effect of seated pelvic tilt on the contact mechanics at the ceramic bearing surface. A finite element model of a ceramic-on-ceramic total hip replacement was created. The cup was orientated at 40° inclination and 15° anteversion relative to the anterior pelvic plane...
January 1, 2018: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29277060/does-additional-patella-tendon-shortening-influence-the-effects-of-multilevel-surgery-to-correct-flexed-knee-gait-in-cerebral-palsy-a-randomized-controlled-trial
#3
M C M Klotz, Britta K Krautwurst, K Hirsch, M Niklasch, M W Maier, S I Wolf, T Dreher
BACKGROUND: The aims of this study were to investigate if patellar tendon shortening (PTS) as a part of SEMLS (single event multilevel surgery) is effective for reduction of flexed knee gait in children with cerebral palsy (CP) and, if PTS leads to stiff knee gait. METHODS: In a randomized controlled study 22 children with flexed knee gait (age: 10.4 ± 2.6 years, GMFCS Level I-III) were randomized and allocated to two groups (1: SEMLS + PTS; 2: SEMLS no PTS): SEMLS was performed for correction of flexed knee gait either with or without additional PTS...
December 5, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29200642/the-effects-of-calcaneal-posture-on-thoracolumbar-alignment-in-a-standing-position
#4
Seon-Chil Kim, Jae-Hoon Yi, Sang-Woo Jung, Dong-Kwon Seo
[Purpose] Severe calcaneus misalignment is correlated with low back pain, and affects pelvic alignment. However, little has been published with regard to the influence of pronation and supination on trunk alignment. Therefore, the present study aimed to investigate the influence of calcaneal inversion on pelvic and trunk alignment. [Subjects and Methods] A 3-dimensional motion analysis system was used to assess pelvic and trunk alignment in 10 healthy male subjects with unilateral and bilateral calcaneus inversion...
November 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29191100/preliminary-results-of-anterior-lumbar-interbody-fusion-anterior-column-realignment-for-the-treatment-of-sagittal-malalignment
#5
Pooria Hosseini, Gregory M Mundis, Robert K Eastlack, Ramin Bagheri, Enrique Vargas, Stacie Tran, Behrooz A Akbarnia
OBJECTIVE Sagittal malalignment decreases patients' quality of life and may require surgical correction to achieve realignment goals. High-risk posterior-based osteotomy techniques are the current standard treatment for addressing sagittal malalignment. More recently, anterior lumbar interbody fusion, anterior column realignment (ALIF ACR) has been introduced as an alternative for correction of sagittal deformity. The objective of this paper was to report clinical and radiographic results for patients treated using the ALIF-ACR technique...
December 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/29171827/comparing-the-anterior-posterior-and-lateral-approach-gait-analysis-in-total-hip-arthroplasty
#6
Stephen Petis, James Howard, Brent Lanting, Ian Jones, Trevor Birmingham, Edward Vasarhelyi
BACKGROUND: The choice of surgical approach for total hip arthroplasty (THA) remains a contentious issue with regards to clinical outcome optimization and restoring patient function. The purpose of this study was to determine the impact of surgical approach for THA on quantitative gait analysis. METHODS: Patients undergoing THA for primary osteoarthritis of the hip were assigned to 1 of 3 surgical approaches: anterior, posterior and lateral. Standardized implants were used at the time of surgery...
December 1, 2017: Canadian Journal of Surgery. Journal Canadien de Chirurgie
https://www.readbyqxmd.com/read/29151007/sagittal-pelvic-orientation-a-comparison-of-two-methods-of-measurement
#7
Aaron Buckland, Edward DelSole, Stephen George, Shaleen Vira, Virginie Lafage, Thomas Errico, Jonathan Vigdorchik
Pelvic tilt is an essential parameter in spinal deformity surgery and in acetabular positioning for total hip arthroplasty. However, the measurement of tilt varies between the hip and spine literature. Hip surgeons measure the anterior pelvic plane tilt, whereas spine surgeons measure the spinopelvic tilt. This study uses stereoradiography (EOS imaging SA, Paris, France) to assess the relationship and the inter-observer and intra-observer reliability of measuring these two common references for pelvic tilt...
December 2017: Bulletin of the Hospital for Joint Diseases
https://www.readbyqxmd.com/read/29136538/the-impact-of-core-muscles-training-on-the-range-of-anterior-pelvic-tilt-in-subjects-with-increased-stiffness-of-the-hamstrings
#8
Michał Tomasz Kuszewski, Rafał Gnat, Anna Gogola
The aim of this study is to verify the hypotheses that muscular coordination training of the core region in subjects showing increased hamstring stiffness results in an increase in anterior pelvic tilt and that there is a correlation between hamstring stiffness and anterior pelvic tilt. The two-group, non-blinded experimental controlled trial with three repeated measurements of the dependent variables. The experimental group received muscular coordination training during a period of two weeks, control group - no training...
November 11, 2017: Human Movement Science
https://www.readbyqxmd.com/read/29114511/the-study-of-trunk-and-pelvic-movement-on-mediolateral-ramps-of-various-ramp-angles-during-one-legged-standing
#9
Sang-Yeol Lee, Se-Yeon Park
The purpose of this study was to identify the instability of the trunk and the pelvis of subjects who were standing on differently angled ramps under conditions in which the ramps were crossed. Changes in the trunk and the pelvis while each subject was standing on one leg in the direction of the cross ramps at four angles (0°, 5°, 10°, and 15°) were measured. To identify instability, the trunk inclination, trunk imbalance, pelvic position, pelvic rotation, and pelvic torsion of 20 healthy male subjects were measured...
August 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29090359/oblique-retroperitoneal-approach-for-lumbar-interbody-fusion-from-l1-to-s1-in-adult-spinal-deformity
#10
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/29066106/quantitative-effect-of-pelvic-position-on-radiographic-assessment-of-acetabular-component-position
#11
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/29027688/preoperative-ultrasonographic-assessment-of-the-anterior-pelvic-plane-for-personalized-total-hip-replacement
#12
Andrzej Kochman, Adrian Goral, Josef Kozak, Wojciech Marek, Monika Morawska-Kochman, Marek Synder
OBJECTIVES: Correct positioning of the acetabular component is a key factor in minimizing the risk of dislocation after total hip replacement (THR) surgery. A "safe" orientation of the cup is usually defined by 2 angles measured between its geometric axis and the anterior pelvic plane. However, in the current state-of-the-art approach to THR surgery, the intraoperative orientation of the anterior pelvic plane cannot be measured. Even less is known about the functional orientation of the pelvis, which determines the postoperative orientation of the cup during the patient's everyday activities...
October 13, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28987526/anterior-lumbar-sagittal-alignment-after-anterior-or-lateral-interbody-fusion
#13
M Afathi, F Zairi, P Devos, M Allaoui, P Marinho, D Chopin, R Assaker
PURPOSE: Anterior or lateral interbody fusion is a treatment option for lumbar disc disease. A segmental change occurs after such surgery. This study was designed to evaluate the changes in the lumbar regional alignment after a single or two-level standalone anterior or lateral interbody fusion (ALIF or LLIF). METHODS: Data from patients referred to our institution between March 2013 and November 2015 for standalone ALIF or LLIF for low-grade isthmic spondylolisthesis or degenerative discopathy were retrospectively included in our analysis...
December 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28984507/anterior-or-posterior-walkers-for-children-with-cerebral-palsy-a-systematic-review
#14
Marilyn Poole, Doug Simkiss, Alice Rose, François-Xavier Li
OBJECTIVE: To review the literature comparing use of anterior and posterior walkers (PW's) by children with cerebral palsy (CP) to determine which walker type is preferable. METHODS: Electronic databases were searched using pre-defined terms by two independent reviewers. Reference lists of included studies were hand searched. Studies published between 1985 and 2016 comparing use of anterior and PW's by children with CP were included. All study designs and outcomes were accepted...
October 6, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/28946520/transcutaneous-neuromuscular-electrical-stimulation-applied-to-optimal-points-on-the-lower-abdomen-and-lumbar-paraspinal-region-changes-gait-parameters-in-patients-with-lumbar-degenerative-kyphosis
#15
Gil Su Jung, Min Cheol Chang, Sang Wan Seo, Dong Gyu Lee, Sang Gyu Kwak, Hee Kyung Cho, Sang Ho Ahn
BACKGROUND: Lumbar degenerative kyphosis (LDK) is characterized by sagittal imbalance resulting from degenerative loss of lumbar lordosis. The ability of transcutaneous neuromuscular electrical stimulation (NMES) to activate deep lumbar stabilizing muscles has been demonstrated. OBJECTIVE: The aim of this study was to evaluate the effects of transcutaneous NMES applied to optimal points on the lower abdomen and lumbar paraspinal region on gait problems in patients with lumbar degenerative kyphosis (LDK)...
September 8, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28874968/posterior-only-approach-with-pedicle-screws-for-the-correction-of-scheuermann-s-kyphosis
#16
Adem Cobden, Akif Albayrak, Yalkin Camurcu, Hakan Sofu, Temel Tacal, Mehmet Akif Kaygusuz
STUDY DESIGN: Retrospective study (level of evidence: level 3). PURPOSE: The purpose of this study was to evaluate the clinical and radiological results of the posterior-only approach with pedicle screws for the treatment of Scheuermann's kyphosis (SK). OVERVIEW OF LITERATURE: The correction of SK with instrumentation can be performed using posterior-only or combined anterior-posterior procedures. With the use of all-pedicle screw constructs in spine surgery, the posterior-only approach has become a popular option for the definitive treatment of SK...
August 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/28869903/biomechanical-differences-between-cases-with-suspected-chronic-exertional-compartment-syndrome-and-asymptomatic-controls-during-running
#17
Andrew Roberts, David Roscoe, David Hulse, Alexander N Bennett, Sharon Dixon
Chronic exertional compartment syndrome (CECS) has been hypothesised, following clinical observations, to be the result of abnormal biomechanics predominantly at the ankle. Treatment of CECS through running re-education to correct these abnormalities has been reported to improve symptoms. However no primary research has been carried out to investigate the movement patterns of those with CECS. This study aimed to compare the running kinematics and muscle activity of cases with CECS and asymptomatic controls...
October 2017: Gait & Posture
https://www.readbyqxmd.com/read/28869637/evaluation-of-functional-and-structural-changes-affecting-the-lumbar-spine-in-professional-field-hockey-players
#18
Małgorzata Barbara Ogurkowska, Krzysztof Kawałek
PURPOSE: The aim of this study was to evaluate functional and structural changes in the lumbar spine which occurred as a consequence of playing field hockey. METHODS: The research group consisted of 20 male professional field hockey players. Computed tomography scans were collected to define the radiological density of the vertebral bodies and to calculate Young's modulus. An electrogoniometer was used to measure the range of movement. Geometric parameters, such as Lumbar Lordosis Angle, Index of Lumbar Lordosis, Whitmann-Ferguson Angle and Anterior Pelvic Tilt, were also measured...
2017: Acta of Bioengineering and Biomechanics
https://www.readbyqxmd.com/read/28829950/analysis-of-gait-patterns-pre-and-post-single-event-multilevel-surgery-in-children-with-cerebral-palsy-by-means-of-offset-wise-movement-analysis-profile-and-linear-fit-method
#19
Andrea Ancillao, Marjolein M van der Krogt, Annemieke I Buizer, Melinda M Witbreuk, Paolo Cappa, Jaap Harlaar
Gait analysis is used for the assessment of walking ability of children with cerebral palsy (CP), to inform clinical decision making and to quantify changes after treatment. To simplify gait analysis interpretation and to quantify deviations from normality, some quantitative synthetic descriptors were developed over the years, such as the Movement Analysis Profile (MAP) and the Linear Fit Method (LFM), but their interpretation is not always straightforward. The aims of this work were to: (i) study gait changes, by means of synthetic descriptors, in children with CP that underwent Single Event Multilevel Surgery; (ii) compare the MAP and the LFM on these patients; (iii) design a new index that may overcome the limitations of the previous methods, i...
August 19, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28822721/postural-assessment-in-class-iii-patients-before-orthognathic-surgery
#20
Fernando Zugno Kulczynski, Fernando de Oliveira Andriola, Pedro Henrique Deon, Denizar Alberto da Silva Melo, Rogério Miranda Pagnoncelli
PURPOSE: To determine the postural characteristics of patients with Class III dentofacial deformities before orthognathic surgery by photogrammetry using SAPO postural assessment software. MATERIALS AND METHODS: This was a cross-sectional study. Eligible participants were adult patients who had an indication for orthognathic surgery to correct skeletal Class III dentofacial deformities and were undergoing orthodontic preparation for surgery. Patients were recruited at the outpatient clinic for dentofacial deformities of the authors' institution from March to November 2015...
July 25, 2017: Journal of Oral and Maxillofacial Surgery
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