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https://www.readbyqxmd.com/read/28324202/the-influence-of-surgical-approach-on-postoperative-pelvic-tilt-after-total-hip-arthroplasty
#1
Daisuke Inoue, Tamon Kabata, Yoshitomo Kajino, Tadashi Taga, Kazuhiro Hasegawa, Takashi Yamamoto, Tomoharu Takagi, Takaaki Ohmori, Hiroyuki Tsuchiya
BACKGROUND: Past reports have shown the tendency of posterior pelvic tilt to increase over time after total hip arthroplasty (THA). We have hypothesized that the volume and extent of released joint capsule may influence the change in postoperative pelvic tilt. This study was conducted to ascertain whether surgical approach during THA (posterior or anterior) has an effect on postoperative changes in pelvic tilt. METHODS: We conducted a retrospective review of 81 hips in 60 patients...
March 21, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28316957/the-evolution-of-computer-assisted-total-hip-arthroplasty-and-relevant-applications
#2
EDITORIAL
Jun-Dong Chang, In-Sung Kim, Atul M Bhardwaj, Ramachandra N Badami
In total hip arthroplasty (THA), the accurate positioning of implants is the key to achieve a good clinical outcome. Computer-assisted orthopaedic surgery (CAOS) has been developed for more accurate positioning of implants during the THA. There are passive, semi-active, and active systems in CAOS for THA. Navigation is a passive system that only provides information and guidance to the surgeon. There are 3 types of navigation: imageless navigation, computed tomography (CT)-based navigation, and fluoroscopy-based navigation...
March 2017: Hip & Pelvis
https://www.readbyqxmd.com/read/28303383/surgical-management-of-coronal-and-sagittal-imbalance-of-the-spine-without-pso-a-multicentric-cohort-study-on-compensated-adult-degenerative-deformities
#3
Alessandro Ramieri, Massimo Miscusi, Maurizio Domenicucci, Antonino Raco, Giuseppe Costanzo
PURPOSE: Sagittal imbalance of severe adult degenerative deformities requires surgical correction to improve pain, mobility and quality of life. Our aim was a harmonic and balanced spine, treating a series of adult degenerative thoracolumbar and lumbar kyphoscoliosis by a non posterior subtraction osteotomy technique. METHODS: We operated 22 painful thoracolumbar and lumbar compensated degenerative deformities by anterior (ALIF), extreme lateral (XLIF) and transforaminal (TLIF) interbody fusion and grade 2 osteotomy (SPO) to restore lumbar lordosis and mobilize the coronal curve...
March 16, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28295578/measurement-of-acetabular-version-based-on-biplanar-radiographs-with-3d-reconstructions-in-comparison-to-ct-as-reference-standard-in-cadavers
#4
Christoph A Agten, Maciej Jonczy, Oliver Ullrich, Christian W A Pfirrmann, Reto Sutter, Florian M Buck
INTRODUCTION: To quantify acetabular version using 3D reconstructions based on biplanar radiographs (BPR) with CT as reference standard. MATERIALS AND METHODS: No institutional review board approval was needed. Nine dry-bone pelvises underwent BPR in five different positions (rotation/tilt). 3D models of each pelvis were reconstructed by two radiologists on the basis of anatomical landmarks using semi-automated software. Automated software was used to assess the 3D models and to calculate acetabular versions perpendicular to the anterior pelvic plane on all levels in the craniocaudal direction in 1mm steps...
March 13, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28288331/within-assessor-reliability-and-minimal-detectable-change-of-gait-kinematics-in-a-young-obese-demographic
#5
Brian Horsak, Barbara Pobatschnig, Arnold Baca, Susanne Greber-Platzer, Alexandra Kreissl, Stefan Nehrer, Barbara Wondrasch, Richard Crevenna, Mohammad Keilani, Andreas Kranzl
INTRODUCTION: Three-dimensional gait analysis (3DGA) in obese populations is a difficult task due to a great amount of subcutaneous fat. This makes it more challenging to identify anatomical landmarks, thus leading to inconsistent marker placement. Therefore, the purpose of this study was to investigate the test-retest reliability for kinematic measurements of obese children and adolescents. METHODS: Nine males and two females with an age-based BMI above the 97th percentile (age: 14...
March 2, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28242571/predictors-for-anterior-pelvic-tilt-following-surgical-correction-of-flexed-knee-gait-including-patellar-tendon-shortening-in-children-with-cerebral-palsy
#6
Harald Böhm, Matthias Hösl, Leonhard Döderlein
INTRODUCTION: Patellar tendon shortening procedure within single event multilevel surgeries was shown to improve crouch gait in Cerebral Palsy (CP) patients. However, one of the drawbacks associated to the correction of flexed knee gait may be increased pelvic anterior tilt with compensatory lumbar lordosis. RESEARCH QUESTION: Which CP patients are at risk for excessive anterior pelvic tilt following correction of flexed knee gait including patellar tendon shortening? METHODS: 32 patients with CP between 8 and 18 years GMFCS I&II were included...
February 21, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28219416/the-safe-screw-path-along-inferior-border-of-the-arcuate-line-at-acetabular-area-an-anatomical-study-based-on-ct-scans
#7
Chun Bi, Jiandong Wang, Xiaoxi Ji, Zhijian Ma, Fang Wang, Xiangsen Zeng, Dongmei Wang, Qiugen Wang
BACKGROUND: Misplaced screw during the internal fixation of acetabular fractures may penetrate the hip joint which might cause chondrolysis and traumatic osteoarthritis in the future. This study aims to acquire the safe path for screw insertion along inferior border of the arcuate line fixation route at acetabular area. METHODS: Computed tomography (CT) scans of 98 patients without pelvic trauma were rebuilt for three-dimensional models of pelvis. After depicting the fixation route curve, five cross-sections perpendicularly to the curve were established from the anterior of pelvis to the posterior along inferior border of the arcuate line...
February 20, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28219364/the-relationship-between-changes-of-cervical-sagittal-alignment-after-anterior-cervical-discectomy-and-fusion-and-spino-pelvic-sagittal-alignment-under-roussouly-classification-a-four-year-follow-up-study
#8
Dong-Ning Huang, Miao Yu, Nan-Fang Xu, Mai Li, Shao-Bo Wang, Yu Sun, Liang Jiang, Feng Wei, Xiao-Guang Liu, Zhong-Jun Liu
BACKGROUND: Anterior cervical discectomy and fusion (ACDF) is widely used in the treatment of cervical degenerative disease; however, the variation of cervical sagittal alignment changes after ACDF has been rarely explored. The purpose of this study is to determine the relationship between changes of cervical sagittal alignment after ACDF and spino-pelvic sagittal alignment under Roussouly classification. METHODS: A cohort of 133 Chinese cervical spondylotic patients who received ACDF from 2011 to 2012 was recruited...
February 20, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28218372/chronological-changes-in-functional-cup-position-at-10-years-after-total-hip-arthroplasty
#9
Yusuke Okanoue, Masahiko Ikeuchi, Shogo Takaya, Masashi Izumi, Koji Aso, Teruhiko Kawakami
PURPOSE: This study aims to clarify the chronological changes in functional cup position at a minimum follow-up of 10 years after total hip arthroplasty (THA), and to identify the risk factors influencing a significant difference in functional cup position during the postoperative follow-up period. METHODS: We evaluated the chronological changes in functional cup position at a minimum follow-up of 10 years after THA in 58 patients with unilateral hip osteoarthritis...
February 15, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28173931/the-immediate-effects-of-exercise-using-the-functional-re-adaptive-exercise-device-on-lumbopelvic-kinematics-in-people-with-and-without-low-back-pain
#10
A Winnard, D Debuse, M Wilkinson, R Tahmosybayat, N Caplan
BACKGROUND: Dysfunction of the lumbar multifidus (LM) and transversus abdominis (TrA) muscles is associated with low back pain (LBP). The Functional Re-adaptive Exercise Device (FRED) has shown potential as a non-specific LBP intervention by automatically recruiting LM and TrA. Loss or lordosis and altered lumbopelvic positioning has also been linked to LBP and is often trained within LM and TrA interventions. The effect that FRED exercise has on lumbopelvic positioning and lumbar lordosis is unknown...
January 2017: Musculoskelet Sci Pract
https://www.readbyqxmd.com/read/28165592/selection-of-a-surgical-approach-for-total-hip-arthroplasty-according-to-the-depth-to-the-surgical-site
#11
Takaaki Ohmori, Tamon Kabata, Toru Maeda, Yoshitomo Kajino, Tadashi Taga, Kazuhiro Hasegawa, Daisuke Inoue, Takashi Yamamoto, Tomoharu Takagi, Hiroyuki Tsuchiya
BACKGROUND: The surgical depths of approaches for total hip arthroplasty (THA) have not been reported previously. In this study, we investigate the relationships between the distances to the centre of the femoral head in different approaches and body mass index (BMI). METHODS: The study included patients with normal hip joints who presented to our hospital. We used the pelvic coordinate system relative to the anterior pelvic plane and the femur coordinate system relative to the posterior condylar plane...
February 4, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28163501/relationship-between-pelvic-alignment-and-weight-bearing-asymmetry-in-community-dwelling-chronic-stroke-survivors
#12
Suruliraj Karthikbabu, Mahabala Chakrapani, Sailakshmi Ganesan, Ratnavalli Ellajosyula
BACKGROUND AND PURPOSE: Altered pelvic alignment and asymmetrical weight bearing on lower extremities are the most common findings observed in standing and walking after stroke. The purpose of this study was to find the relationship between pelvic alignment and weight-bearing asymmetry (WBA) in community-dwelling chronic stroke survivors. MATERIALS AND METHODS: This cross-sectional study was conducted in tertiary care rehabilitation centers. In standing, the lateral and anterior pelvic tilt angle of chronic stroke survivors was assessed using palpation (PALM™) meter device...
December 2016: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28148659/variation-in-functional-pelvic-tilt-in-patients-undergoing-total-hip-arthroplasty
#13
J Pierrepont, G Hawdon, B P Miles, B O' Connor, J Baré, L R Walter, E Marel, M Solomon, S McMahon, A J Shimmin
AIMS: The pelvis rotates in the sagittal plane during daily activities. These rotations have a direct effect on the functional orientation of the acetabulum. The aim of this study was to quantify changes in pelvic tilt between different functional positions. PATIENTS AND METHODS: Pre-operatively, pelvic tilt was measured in 1517 patients undergoing total hip arthroplasty (THA) in three functional positions - supine, standing and flexed seated (the moment when patients initiate rising from a seated position)...
February 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28145398/assessment-of-bioelectrical-activity-of-pelvic-floor-muscles-depending-on-the-orientation-of-the-pelvis-in-menopausal-women-with-symptoms-of-stress-urinary-incontinence-continued-observational-study
#14
Kuba Ptaszkowski, Romuald Zdrojowy, Lucyna Slupska, Janusz Bartnicki, Janusz Dembowski, Tomasz Halski, Malgorzata Paprocka-Borowicz
BACKGROUND: Menopausal women often experience the prolapse of the uterus, bladder and rectum resulting from the failure and weakening of the pelvic floor muscles (PFM). Strengthening of the PFM through the standard exercises is recognized as an effective way of preventive measures and conservative treatment of the symptoms listed above, but still need to be improved. AIM: The goal was the objective assessment of resting and functional bioelectrical activity of pelvic floor muscle (PFM) in women during menopause and its comparison in three different positions of the pelvis: anterior pelvic tilt - position 1 (P1) posterior pelvic tilt - position 2 (P2) and neutral pelvic tilt - position 3 (P3)...
January 30, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28137249/multiplanar-evaluation-of-radiological-findings-associated-with-acetabular-dysplasia-and-investigation-of-its-prevalence-in-an-asian-population-a-ct-based-study
#15
Tomohiro Mimura, Kanji Mori, Masahiro Kitagawa, Mariko Ueki, Yuki Furuya, Taku Kawasaki, Shinji Imai
BACKGROUND: Acetabular dysplasia (AD) is a well-known cause of osteoarthritis (OA) of the hip, with its prevalence previously determined on plain radiography. The prevalence of preexisting AD was reported as 7.3% in a patient-based Asian population. Although computed tomography (CT) could evaluate AD in multiple planes, its prevalence using multiplanar CT images has not been reported. We investigated its prevalence with CT on coronal, axial, and sagittal planes and then determined if adding the axial and sagittal planes enhanced the investigation...
January 31, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28134050/how-to-obtain-and-identify-the-acetabular-anterior-column-axial-view-projection-in-patients
#16
Xiaoreng Feng, Huijie Fan, Frankie Leung, Bin Chen
PURPOSE: This study aims at sharing our experience as how to obtain and identify axial view image of the acetabular anterior column in patients. METHODS: Pelvic computed tomography data of six normal adults were used to reconstruct three-dimensional (3D) models. The transparency of each 3D model was downgraded at the view perpendicular to the cross section of the anterior column axis to simulate the anterior column axial view image. Fluoroscopy was performed in all patients to obtain the anterior column axial view image in the operating room...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28127750/standing-sagittal-alignment-of-the-whole-axial-skeleton-with-reference-to-the-gravity-line-in-humans
#17
Kazuhiro Hasegawa, Masashi Okamoto, Shun Hatsushikano, Haruka Shimoda, Masatoshi Ono, Takao Homma, Kei Watanabe
Human beings stand upright with the chain of balance beginning at the feet, progressing to the lower limbs (ankles, knees, hip joints, pelvis), each of the spinal segments, and then ending at the cranium to achieve horizontal gaze and balance using minimum muscle activity. The details of the alignment and balance of the chain, however, are not clearly understood, due to the lack of information regarding the three-dimensional (3D) orientation of all bony elements in relation to the gravity line (GL). We performed a clinical study to clarify the standing sagittal alignment of whole axial skeletons in reference to the GL using the EOS slot-scanning 3D X-ray imaging system with simultaneous force plate measurement in a healthy human population...
January 27, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28075046/a-standardized-fluoroscopy-based-technique-to-measure-intraoperative-cup-anteversion
#18
Matthieu Zingg, Sana Boudabbous, Didier Hannouche, Xavier Montet, Friedrich Boettner
Direct anterior approach (DAA) with the patient lying supine has facilitated the use of intraoperative fluoroscopy and allows for standardized positioning of the patient. The current study presents a new technique to measure acetabular component anteversion using intraoperative fluoroscopy. The current paper describes a mathematical formula to calculate true acetabular component anteversion based on the acetabular component abduction angle and the c-arm tilt angle (CaT). The CaT is determined by tilting the c-arm until an external pelvic oblique radiograph with the equatorial plane of the acetabular component perpendicular to the fluoroscopy receptor is obtained...
January 11, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28074440/distal-femoral-extension-and-shortening-osteotomy-as-a-part-of-multilevel-surgery-in-children-with-cerebral-palsy
#19
Matthias C M Klotz, Klemens Hirsch, Daniel Heitzmann, Michael W Maier, Sebastien Hagmann, Thomas Dreher
BACKGROUND: There are several reports describing an increase in anterior pelvic tilt after hamstring lengthening in children with cerebral palsy (CP). Distal femoral extension and shortening osteotomy (DFESO) is an alternative treatment for correction of fl exed knee gait, but investigations analyzing outcome and infl uence on adjacent joint are few in the literature. The purpose of this study was to analyze the influence of DFESO on knee and pelvis in children with CP. Furthermore, it was of interest if an additional patellar tendon advancement (PA) infl uences outcome...
December 23, 2016: World Journal of Pediatrics: WJP
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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