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Sagittal balance

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https://www.readbyqxmd.com/read/28231557/comparison-of-body-s-center-of-mass-motion-relative-to-center-of-pressure-between-treadmill-and-over-ground-walking
#1
Hsuan-Lun Lu, Tung-Wu Lu, Hsiu-Chen Lin, Wing P Chan
Treadmills have been used in rehabilitation settings to provide convenient protocols and continuous monitoring of movement over multiple cycles at well-controlled speeds for gait and balance training. However, the potential differences in the movement control may affect the translation of the training outcomes to real life over-ground walking (OW). The similarities and differences in the balance control between treadmill walking (TW) and OW have largely been unexplored. The current study bridged the gap by comparing the motions of the body's center of mass (COM) relative to the center of pressure (COP) between TW and OW, in terms of the COM-COP inclination angle (IA) and its rate of change (RCIA)...
February 9, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28230573/global-sagittal-imbalance-due-to-change-in-pelvic-incidence-after-traumatic-spinopelvic-dissociation
#2
Han-Dong Lee, Chang-Hoon Jeon, Nam-Su Chung, Suk-Hyeong Won
OBJECTIVES: Traumatic spinopelvic dissociation separates the spinal column from the pelvis, which usually creates lumbosacral kyphosis. We aimed to examine how the spinopelvic profiles changes after traumatic spinopelvic dissociation, and which are the relevant factors for the sagittal imbalance of the spine. DESIGN: Retrospective analysis. SETTING: Level I trauma center PATIENTS:: Thirty-nine consecutive patients who were diagnosed with traumatic spinopelvic dissociation and had a minimum 2-year radiological follow-up were included...
February 20, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28212673/weight-compensation-characteristics-of-armeo%C3%A2-spring-exoskeleton-implications-for-clinical-practice-and-research
#3
Bonnie E Perry, Emily K Evans, Dobrivoje S Stokic
BACKGROUND: Armeo®Spring exoskeleton is widely used for upper extremity rehabilitation; however, weight compensation provided by the device appears insufficiently characterized to fully utilize it in clinical and research settings. METHODS: Weight compensation was quantified by measuring static force in the sagittal plane with a load cell attached to the elbow joint of Armeo®Spring. All upper spring settings were examined in 5° increments at the minimum, maximum, and two intermediate upper and lower module length settings, while keeping the lower spring at minimum...
February 17, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28210054/sagittal-plane-spinal-mobility-is-associated-with-dynamic-balance-ability-of-community-dwelling-elderly-people
#4
Yahiko Takeuchi
[Purpose] The purpose of this study was to clarify the correlation between the range of spinal mobility on the sagittal plane and the dynamic balance ability of elderly people living in communities. [Subjects and Methods] The persons studied were 31 healthy elderly people living in the community (16 females and 15 males). The range of mobility of the participants' spines in the sagittal plane was measured by using a spinal mouse(®). Balance ability was evaluated by using Functional reach (FR), Timed up and go (TUG), and Maximum walking speed (MWS)...
January 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28207661/analysis-of-factors-associated-with-sagittal-balance-in-normal-asymptomatic-individuals-a-retrospective-study-in-a-population-of-east-china
#5
Mingyuan Yang, Changwei Yang, Xiao Zhai, Jian Zhao, Xiaodong Zhu, Ming Li
STUDY DESIGN: A retrospective study. OBJECTIVE: To determine primary contributors to sagittal balance and establish a predictive equation of sagittal balance in normal asymptomatic subjects. SUMMARY OF BACKGROUND DATA: Sagittal balance has been verified to be associated with health-related quality of life. Although many studies have been performed to explore factors contributing to sagittal balance in various disease states, no study has been conducted in normal asymptomatic subjects in East China...
February 15, 2017: Spine
https://www.readbyqxmd.com/read/28188024/robotic-assisted-gait-training-improves-walking-abilities-in-diplegic-children-with-cerebral-palsy
#6
L Wallard, G Dietrich, Y Kerlirzin, J Bredin
The robotic-assisted gait training therapy (RAGT), based on intensity and repetition of movement, presents beneficial effects on recovery and improvement of postural and locomotor functions of the patient. This study sought to highlight the effect of this RAGT on the dynamic equilibrium control during walking in children with Cerebral Palsy (CP) by analyzing the different postural strategies of the fullbody (upper/lower body) before and after this RAGT in order to generate forward motion while maintaining balance...
February 2, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/28185071/sagittal-spinal-alignment-in-asymptomatic-patients-over-30%C3%A2-years-old-in-the-korean-population
#7
Seil Sohn, Chun Kee Chung, Yongjung Jay Kim, Inbo Han, Su Min Kang, Ji Won Yoon, Hyejin Kim
BACKGROUND: We aim to provide sagittal and pelvic parameters according to different age groups in an asymptomatic population all over 30 years old and to investigate the possible causes of changes in these parameters. METHODS: Whole-spine, standing lateral radiographs were taken in 128 asymptomatic Korean people over 30 years old. The spinal parameters (the total thoracic kyphosis (TTK), maximal lumbar lordosis (MLL), total lumbar lordosis (TLL), lower lumbar lordosis (LLL), thoracolumbar junctional angle (TLJA), and lumbar inclination (LI)), pelvic parameters (pelvic incidence (PI), sacral slope (SS), and pelvic tilt (PT)), and spinal balance parameters (spinal balance, sacropelvic balance, and spinopelvic balance) were measured...
February 9, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28175440/169%C3%A2-laminoplasty-vs-laminectomy-with-posterior-spinal-fusion-for-multilevel-cervical-spondylotic-myelopathy-matched-cohorts-of-regional-sagittal-balance
#8
Darryl Lau, Ethan A Winkler, Khoi Duc Than, Dean Chou, Praveen V Mummaneni
No abstract text is available yet for this article.
August 1, 2016: Neurosurgery
https://www.readbyqxmd.com/read/28164163/change-of-sagittal-spinal-alignment-and-its-association-with-pain-and-function-after-lumbar-surgery-augmented-with-an-interspinous-implant
#9
Rebecca J Crawford, Quentin J Malone, Roger I Price
BACKGROUND: Interspinous spacer/implants like the Device for Intervertebral Assisted Motion (DIAM™) are controversially yet commonly used in the surgical treatment of lumbar degenerative pathologies. Criticism is based on ill-defined indications, lack of superiority over decompression, and a poorly understood mechanical effect. Yet, continued use by surgeons implies their perceived clinical merit. We examined radiographic spinal alignment for 12 months, and pain and function for 24 months, after DIAM-augmented surgery to improve the understanding of the mechanical effect relating to clinical outcomes in patients...
2017: Scoliosis and Spinal Disorders
https://www.readbyqxmd.com/read/28164114/impact-of-sagittal-balance-on-clinical-outcomes-in-surgically-treated-t12-and-l1-burst-fractures-analysis-of-long-term-outcomes-after-posterior-only-and-combined-posteroanterior-treatment
#10
M Mayer, R Ortmaier, H Koller, J Koller, W Hitzl, A Auffarth, H Resch, A von Keudell
Objective. Long-term radiological and clinical outcome retrospective study of surgical treatment for T12 and L1 burst fractures in perspective of sagittal balance measures. Methods. Patients with age of 16-60 years, complete radiographs, early surgical treatment surgery, and follow-up (F/U) > 18 months were included and strict exclusion criteria applied. Regional and thoracolumbar kyphosis angles (RKA and TLA) were measured preoperatively and at final F/U, as were parameters of the spinopelvic sagittal alignment...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28144735/influence-of-a-variation-in-the-position-of-the-arms-on-the-sagittal-connection-of-the-gravity-line-with-the-spinal-structures
#11
Jean Legaye, Ginette Duval-Beaupere
PURPOSE: To evaluate the influence of the position of the arms on the location of the body's gravity line. PREVIOUS DATA: The sagittal balance of the pelvi-spinal unit is organized so that the gravity line is localized in a way that limits the mechanical loads and the muscle efforts. This position of the gravity line was analyzed in vivo, in standing position, the arms dangling, by the barycentremeter, a gamma rays scanner. Then, several teams had the same purpose but using a force platform combined with radiographies...
January 31, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28139188/sagittal-plane-analysis-of-the-spine-and-pelvis-in-degenerative-lumbar-scoliosis
#12
Fei Han, Li Weishi, Sun Zhuoran, Ma Qingwei, Chen Zhongqiang
BACKGROUND: Previous studies have reported the normative values of pelvic sagittal parameters, but no study has analyzed the sagittal spino-pelvic alignment in degenerative lumbar scoliosis (DLS) and its role in the pathogenesis. METHODS: Retrospective analysis was applied to 104 patients with DLS, together with 100 cases of asymptomatic young adults as a control group and another control group consisting of 145 cases with cervical spondylosis. The coronal and sagittal parameters were measured on the anteroposterior and lateral radiograph of the whole spine in the DLS group as well as in the two control groups...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28131688/isometric-muscle-activation-of-the-serratus-anterior-and-trapezius-muscles-varies-by-arm-position-a-pilot-study-with-healthy-volunteers-with-implications-for-rehabilitation
#13
Junsuke Miyasaka, Ryuzo Arai, Taisuke Ito, Nobuyuki Shingu, Satoshi Hasegawa, Satoko Ibuki, Noriaki Ichihashi, Shuichi Matsuda, Toshio Moritani
BACKGROUND: This study aimed to determine the most appropriate angle and moving direction of the arm for improving coordination of the periscapular muscles, including the serratus anterior (SA), upper trapezius (UT), middle trapezius (MT), and lower trapezius (LT). METHODS: Muscle activation amplitudes were evaluated in the SA, UT, MT, and LT in 11 healthy subjects by use of surface electromyography. The subjects were asked to maintain the arm position at 5 elevated positions with maximal effort against applied manual forces, which were directed from upper to lower (test 1), lower to upper (test 2), posterior to anterior in the frontal plane and lateral to medial in the sagittal plane (test 3), and anterior to posterior in the frontal plane and medial to lateral in the sagittal plane (test 4)...
January 26, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28128659/remifentanil-reduces-blood-loss-during-orthognathic-surgery
#14
Nobuyuki Matsuura, Taiki Okamura, Satoko Ide, Tatsuya Ichinohe
Remifentanil is reported to reduce oral tissue blood flow. We performed a retrospective investigation using logistic regression analysis of anesthesia records to investigate whether the use of remifentanil infusion in a balanced anesthesia technique was useful as a primary technique to reduce blood loss during orthognathic surgery. Subjects were 80 patients who underwent Le Fort I osteotomy and sagittal split ramus osteotomy of the mandible. The variables included gender, age, weight, type of maintenance anesthetic, type and dose or infusion rate of opioid, mean systolic blood pressure (SBP-mean), coefficient of variation of systolic blood pressure (CVSBP) during surgery, mean heart rate (HR-mean), duration of surgery, total blood loss, volume of infusion used, amount of local anesthetic used, body temperature, and urine output...
2017: Anesthesia Progress
https://www.readbyqxmd.com/read/28127750/standing-sagittal-alignment-of-the-whole-axial-skeleton-with-reference-to-the-gravity-line-in-humans
#15
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/28110146/enhanced-arm-swing-alters-interlimb-coordination-during-overground-walking-in-individuals-with-traumatic-brain-injury
#16
Ksenia I Ustinova, Joseph E Langenderfer, Nilanthy Balendra
The current study investigated interlimb coordination in individuals with traumatic brain injury (TBI) during overground walking. The study involved 10 participants with coordination, balance, and gait abnormalities post-TBI, as well as 10 sex- and age-matched healthy control individuals. Participants walked 12m under two experimental conditions: 1) at self-selected comfortable walking speeds; and 2) with instructions to increase the amplitude and out-of-phase coordination of arm swinging. The gait was assessed with a set of spatiotemporal and kinematic parameters including the gait velocity, step length and width, double support time, lateral displacement of the center of mass, the amplitude of horizontal trunk rotation, and angular motions at shoulder and hip joints in sagittal plane...
January 19, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28106523/influence-of-postoperative-sagittal-balance-and-spinopelvic-parameters-on-the-outcome-of-patients-surgically-treated-for-degenerative-lumbar-spondylolisthesis
#17
Ingrid Radovanovic, Jennifer C Urquhart, Venkat Ganapathy, Fawaz Siddiqi, Kevin R Gurr, Stewart I Bailey, Christopher S Bailey
OBJECTIVE The object of this study was to determine the association between postoperative sagittal spinopelvic alignment and patient-rated outcome measures following decompression and fusion for lumbar degenerative spondylolisthesis. METHODS The authors identified a consecutive series of patients who had undergone surgery for lumbar degenerative spondylolisthesis between 2008 and 2012, with an average follow-up of 3 years (range 1-6 years). Surgery was performed to address the clinical symptoms of spinal stenosis, not global sagittal alignment...
January 20, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28090004/difference-in-dynamic-body-balance-between-forward-and-lateral-single-leg-hop-landing
#18
Yukiko Kawakami, Issei Ogasawara, Yasukazu Yonetani, Rikio Takao, Tatsuo Mae, Ken Nakata, Shuji Horibe
Since the loss of balance can result in falls or lower extremity injuries during sports or daily activities, quantitative evaluation of one's ability to maintain balance with changes in the direction of motion is crucial. The present study aimed to assess whether the trajectory length of the center of pressure (COP) and peak values of the ground reaction force (GRF) following a single-leg hop landing differ when hopping forward or laterally, and to ascertain disparities in balance characteristics due to differences in hop direction...
January 16, 2017: Kurume Medical Journal
https://www.readbyqxmd.com/read/28068837/immediate-effects-of-acupuncture-treatment-on-intra-and-inter-limb-contributions-to-body-support-during-gait-in-patients-with-bilateral-medial-knee-osteoarthritis
#19
Yen-Hung Liu, I-Pin Wei, Ting-Ming Wang, Tung-Wu Lu, Jaung-Geng Lin
Knee osteoarthritis (OA) often leads to altered balance control, joint motion and loading patterns during gait. Acupuncture has been proven to be effective in pain relief but its effects on inter-joint load-sharing for body balance have not been reported. The current study bridged the gap by quantifying the immediate effects of acupuncture on the inter-joint and inter-limb load-sharing in patients with knee OA during level walking in terms of the total support moment (Ms) and the contribution of individual joints to the total support moment...
2017: American Journal of Chinese Medicine
https://www.readbyqxmd.com/read/28065623/an-anatomic-investigation-into-the-relationship-between-posterior-condylar-offset-and-posterior-tibial-slope-of-one-thousand-one-hundred-thirty-eight-cadaveric-knees
#20
Douglas S Weinberg, Jeremy J Gebhart, Glenn D Wera
BACKGROUND: Posterior condylar offset (PCO) and posterior tibial slope (PTS) have critical consequences in total knee arthroplasty, especially with regards to sagittal plane balancing. However, there has only been limited investigation into the functional consequences of each, and there have only been anecdotal observations regarding any associations between PCO and PTS. METHODS: In a large osteological study of 1138 knees, standardized measurements of PCO and PTS were taken using previously described techniques on specimens of different age, race, and gender...
December 22, 2016: Journal of Arthroplasty
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