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https://www.readbyqxmd.com/read/28331907/brace-technology-thematic-series-the-3d-rigo-ch%C3%A3%C2%AAneau-type-brace
#1
Manuel Rigo, Mina Jelačić
BACKGROUND: Chêneau and Matthias introduced in 1979 a brace concept inspired in casting. The brace was initially named "CTM" from Chêneau-Toulouse-Münster. The name "CTM" is still popular in France but "Chêneau-type brace" is its common name in the rest of the world. Principles to construct this brace were originally based on anatomical descriptions rather than biomechanics, and its standard is poor. METHODS: This paper follows the format of the "Brace technology thematic series...
2017: Scoliosis and Spinal Disorders
https://www.readbyqxmd.com/read/28331301/correlation-between-movement-complexity-during-static-standing-and-balance-function-in-institutionalized-older-adults
#2
Momoko Yamagata, Tome Ikezoe, Midori Kamiya, Mitsuhiro Masaki, Noriaki Ichihashi
PURPOSE: Sample entropy (SampEn) is an analysis to evaluate movement complexity of the center of pressure (COP). A lower value of SampEn indicates lower complexity of COP variability, that is, rigidity, and lower degrees of freedom. Previous studies reported the association of increased SampEn with improved standing balance ability in young subjects. However, no studies have examined these relationships among older adults. Thus, we aimed to investigate the relationship between SampEn and standing balance ability in older adults...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28330796/chronic-low-back-pain-after-lumbosacral-fracture-due-to-sagittal-and-frontal-vertebral-imbalance
#3
L Boyoud-Garnier, M Boudissa, S Ruatti, G Kerschbaumer, P Grobost, J Tonetti
PROBLEM AND HYPOTHESIS: Over time, some patients with unilateral or bilateral lumbosacral injuries experience chronic low back pain. We studied the sagittal and frontal balance in a population with these injuries to determine whether mismatch in the pelvic and lumbar angles are associated with chronic low back pain. PATIENTS AND METHODS: Patients with posterior pelvic ring fractures (Tile C1, C2, C3 and A3.3) that had healed were included. Foreign patients and those with an associated spinal or acetabular fracture or nonunion were excluded...
March 19, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28328741/sagittal-plane-parameters-in-growing-rod-patients-following-final-fusion
#4
Robert F Murphy, John B Emans, Michael Troy, Patricia E Miller, Michael T Hresko, Lawrence I Karlin, Daniel J Hedequist, Michael P Glotzbecker
Almost half of growing rod (GR) patients that undergo final fusion (FF) have an extension of instrumented levels. The purpose of this study was to review sagittal plane radiographic parameters of patients with distal extension of instrumented levels at FF to those whose levels remained the same. Radiographs were assessed preoperatively, after GR insertion/first lengthening, following GR treatment before FFs, and after FF. Measurements included sagittal balance, lumbar lordosis, thoracic kyphosis, and distal junction angle (DJA)...
March 21, 2017: Journal of Pediatric Orthopedics. Part B
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
#5
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/28297177/kinematics-of-the-pelvis-torso-and-lower-limb-during-obstacle-negotiation-while-under-temporal-constraints
#6
Jesse C Christensen, Christopher R Wilson, Andrew S Merryweather, K Bo Foreman
Biomechanics of unobstructed locomotion consists of synchronized complex movements of the pelvis, torso, and lower limbs. These movement patterns become more complex as individuals encounter obstacles or negotiate uneven terrain. To date, limited research has explored how specifically the pelvis, torso, and lower limb segments relate to obstacle negotiation of varying sized objects combined with temporal constraints to perform the task. Understanding pelvis and adjoining segment movements during object negotiation will provide necessary information in identifying abnormal mechanics and potential fall risk characteristics in balance compromised patient populations...
April 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28296698/how-to-create-sagittal-balance-in-mis-correction-of-adult-spinal-deformity
#7
Neel Anand
No abstract text is available yet for this article.
April 1, 2017: Spine
https://www.readbyqxmd.com/read/28291409/association-between-bicortical-screw-fixation-at-upper-instrumented-vertebra-and-risk-for-upper-instrumented-vertebra-fracture
#8
Young-Seop Park, Seung-Jae Hyun, Ho Yong Choi, Ki-Jeong Kim, Tae-Ahn Jahng
OBJECTIVE The aim of this study was to investigate the risk of upper instrumented vertebra (UIV) fractures associated with UIV screw fixation (unicortical vs bicortical) and polymethylmethacrylate (PMMA) augmentation after adult spinal deformity surgery. METHODS A single-center, single-surgeon consecutive series of adult patients who underwent lumbar fusion for ≥ 4 levels (that is, the lower instrumented vertebra at the sacrum or pelvis and the UIV of the thoracolumbar spine [T9-L2]) were retrospectively reviewed...
March 3, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28291407/an-assessment-of-the-most-reliable-method-to-estimate-the-sagittal-alignment-of-the-cervical-spine-analysis-of-a-prospective-cohort-of-138-cases
#9
Roland D Donk, Michael G Fehlings, Wim I M Verhagen, Hisse Arnts, Hans Groenewoud, André L M Verbeek, Ronald H M A Bartels
OBJECTIVE Although there is increasing recognition of the importance of cervical spinal sagittal balance, there is a lack of consensus as to the optimal method to accurately assess the cervical sagittal alignment. Cervical alignment is important for surgical decision making. Sagittal balance of the cervical spine is generally assessed using one of two methods; namely, measuring the angle between C-2 and C-7, and drawing a line between C-2 and C-7. Here, the best method to assess sagittal alignment of the cervical spine is investigated...
March 3, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28281004/selective-hemivertebrae-resection-in-a-congenital-scoliosis-patient-with-multiple-hemivertebrae-deformities
#10
Yangpu Zhang, Jincai Yang, Lijin Zhou, Aixing Pan, Yong Hai
PURPOSE: To report the surgical experience of selective hemivertebrae resection for a case of congenital scoliosis with multiple hemivertebrae deformities. METHODS: A 14-year-old male presented with progressive rib hump, tilted torso and spine deformity was admitted in our department. No abnormalities were detected in neurological examination and the comprehensive imaging study demonstrated congenital scoliosis of multiple hemivertebrae in T5, T10, L1 and L3. Treatment of the patient commenced with a 10-day skin traction therapy prior to the surgery...
March 9, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28270208/aortic-length-measurements-for-pulse-wave-velocity-calculation-manual-2d-vs-automated-3d-centreline-extraction
#11
Arna van Engelen, Miguel Silva Vieira, Isma Rafiq, Marina Cecelja, Torben Schneider, Hubrecht de Bliek, C Alberto Figueroa, Tarique Hussain, Rene M Botnar, Jordi Alastruey
BACKGROUND: Pulse wave velocity (PWV) is a biomarker for the intrinsic stiffness of the aortic wall, and has been shown to be predictive for cardiovascular events. It can be assessed using cardiovascular magnetic resonance (CMR) from the delay between phase-contrast flow waveforms at two or more locations in the aorta, and the distance on CMR images between those locations. This study aimed to investigate the impact of different distance measurement methods on PWV. We present and evaluate an algorithm for automated centreline tracking in 3D images, and compare PWV calculations using distances derived from 3D images to those obtained from a conventional 2D oblique-sagittal image of the aorta...
March 8, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/28267910/-surgical-management-of-spinal-deformity-in-a-patient-with-escobar-syndrome-review-of-the-literature
#12
M C Hernández-Hernández, J A Canales-Nájera, J S De La Cruz-Álvarez, M E Tena-Zanabria, J Matus-Jiménez
BACKGROUND: The non-lethal variant of the Escobar or multiple pterygium syndrome is an entity of autosomal recessive inheritance linked to the X chromosome; it is characterized by multiple pterygia (hence its name) located mainly in the neck (95%) and armpits (55%), as well as other orthopedic malformations such as a vertical talus, congenital hip dislocation, and congenital scoliosis. OBJECTIVE: To present an optional surgical technique for the management of severe spinal deformities...
July 2016: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/28266956/iatrogenic-flatback-and-flatback-syndrome-evaluation-management-and-prevention
#13
Barrett S Boody, Brett D Rosenthal, Tyler J Jenkins, Alpesh A Patel, Jason W Savage, Wellington K Hsu
Flatback syndrome can be a significant source of disability, affecting stance and gait, and resulting in significant pain. Although the historical instrumentation options for thoracolumbar fusion procedures have been commonly regarded as the etiology of iatrogenic flatback, inappropriate selection, or application of modern instrumentation can similarly produce flatback deformities. Patients initially compensate with increased lordosis at adjacent lumbar segments and reduction of thoracic kyphosis. As paraspinal musculature fatigues and discs degenerate, maintaining sagittal balance requires increasing pelvic retroversion and hip extension...
March 6, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28264231/-lumbar-degenerative-kyphosis-is-not-byword-for-degenerative-sagittal-imbalance-time-to-replace-a-misconception
#14
REVIEW
Chang-Hyun Lee, Chun Kee Chung, Jee-Soo Jang, Sung-Min Kim, Dong-Kyu Chin, Jung-Kil Lee
Lumbar degenerative kyphosis (LDK) is a subgroup of the flat-back syndrome and is most commonly caused by unique life styles, such as a prolonged crouched posture during agricultural work and performing activities of daily living on the floor. Unfortunately, LDK has been used as a byword for degenerative sagittal imbalance, and this sometimes causes confusion. The aim of this review was to evaluate the exact territory of LDK, and to introduce another appropriate term for degenerative sagittal deformity. Unlike what its name suggests, LDK does not only include sagittal balance disorder of the lumbar spine and kyphosis, but also sagittal balance disorder of the whole spine and little lordosis of the lumbar spine...
March 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/28259465/contribution-of-muscle-short-range-stiffness-to-initial-changes-in-joint-kinetics-and-kinematics-during-perturbations-to-standing-balance-a-simulation-study
#15
Friedl De Groote, Jessica L Allen, Lena H Ting
Simulating realistic musculoskeletal dynamics is critical to understanding neural control of muscle activity evoked in sensorimotor feedback responses that have inherent neural transmission delays. Thus, the initial mechanical response of muscles to perturbations in the absence of any change in muscle activity determines which corrective neural responses are required to stabilize body posture. Muscle short-range stiffness, a history-dependent property of muscle that causes a rapid and transient rise in muscle force upon stretch, likely affects musculoskeletal dynamics in the initial mechanical response to perturbations...
February 21, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28248894/extensive-corrective-fixation-surgeries-for-adult-spinal-deformity-improve-posture-and-lower-extremity-kinematics-during-gait
#16
Hideyuki Arima, Yu Yamato, Tomohiko Hasegawa, Sho Kobayashi, Go Yoshida, Tatsuya Yasuda, Tomohiro Banno, Shin Oe, Yuki Mihara, Daisuke Togawa, Yukihiro Matsuyama
STUDY DESIGN: Longitudinal cohort. OBJECTIVE: This study aimed to document changes in posture and lower extremity kinematics during gait in patients with adult spinal deformity (ASD) after extensive corrective surgery. SUMMARY OF BACKGROUND DATA: Standing radiographic parameters are typically used to evaluate ASD patients. Previously, preoperative walking and standing posture discrepancy were reported in ASD patients. However, we didn't include comparison between before and after surgery...
February 28, 2017: Spine
https://www.readbyqxmd.com/read/28248611/age-related-variations-in-global-spinal-alignment-and-sagittal-balance-in-asymptomatic-japanese-adults
#17
Kunio Yokoyama, Masahiro Kawanishi, Makoto Yamada, Hidekazu Tanaka, Yutaka Ito, Shinji Kawabata, Toshihiko Kuroiwa
OBJECTIVES: The global spinal sagittal alignment varies widely among healthy individuals as it is affected by not only race, but also aging. We investigated age-related changes in the spinal alignment in asymptomatic Japanese individuals. METHODS: The subjects comprised 220 individuals without any spine-related neurological symptoms or treatment history thereof who visited our outpatient clinic. Lateral radiographs of the whole spine were taken for all subjects in the standing position...
March 1, 2017: Neurological Research
https://www.readbyqxmd.com/read/28243367/preoperative-magnetic-resonance-imaging-evaluation-in-patients-with-adolescent-idiopathic-scoliosis
#18
Choon Sung Lee, Chang Ju Hwang, Nam Heun Kim, Hyun Min Noh, Mi Young Lee, So Jung Yoon, Dong-Ho Lee
STUDY DESIGN: Retrospective case series. PURPOSE: The purpose of this study was to examine the incidence of neural axis abnormalities and the relevant risk factors in patients with adolescent idiopathic scoliosis (AIS). OVERVIEW OF LITERATURE: The use of preoperative magnetic resonance imaging (MRI) to assess the whole spine in patients with idiopathic scoliosis is controversial, and indications for such MRI evaluations have not been definitively established...
February 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/28241769/instrumented-gait-analysis-a-measure-of-gait-improvement-by-a-wheeled-walker-in-hospitalized-geriatric-patients
#19
Samuel Schülein, Jens Barth, Alexander Rampp, Roland Rupprecht, Björn M Eskofier, Jürgen Winkler, Karl-Günter Gaßmann, Jochen Klucken
BACKGROUND: In an increasing aging society, reduced mobility is one of the most important factors limiting activities of daily living and overall quality of life. The ability to walk independently contributes to the mobility, but is increasingly restricted by numerous diseases that impair gait and balance. The aim of this cross-sectional observation study was to examine whether spatio-temporal gait parameters derived from mobile instrumented gait analysis can be used to measure the gait stabilizing effects of a wheeled walker (WW) and whether these gait parameters may serve as surrogate marker in hospitalized patients with multifactorial gait and balance impairment...
February 27, 2017: Journal of Neuroengineering and Rehabilitation
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
#20
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
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