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Maharjan S, Thu KW, Kongoun S, Sornkaew K, Richards J, Wattananon P. The role of an active muscular subsystem in prone instability test during rest and leg raise conditions. Eur J Phys Rehabil Med 2023; 59:586-592. [PMID: 37497551 PMCID: PMC10665712 DOI: 10.23736/s1973-9087.23.07834-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 07/04/2023] [Accepted: 07/17/2023] [Indexed: 07/28/2023]
Abstract
BACKGROUND Clinicians commonly used prone instability test (PIT) by assessing the posterior-to-anterior (PA) displacement to identify lumbar instability. Most studies focusing on passive subsystem found greater mobility in lower lumbar (L4-L5) than upper lumbar (L1-L3) spine. However, there is still a lack of evidence to demonstrate the role of active subsystem. Additionally, it is unclear whether sex affects PA displacements. AIM To determine differences in displacement among five lumbar segments, between two testing positions (rest and leg raise), and between male and female during PIT in individuals with chronic non-specific low back pain (CNLBP). DESIGN A cross-sectional study design. SETTING Spine biomechanics laboratory. POPULATION Individuals with CNLBP. METHODS An electromagnetic tracking system was used to measure PA displacement with sensors attached at T12, S2 and a hand-held dynamometer. Participants were asked to perform PIT, while a 100N force was applied to each lumbar segment during resting and leg raise positions. RESULTS Significantly less PA displacement (P<0.05) was seen in lower compared to upper lumbar spine and in leg raise compared to rest at L1 to L4. No significant interaction of sex with different lumbar levels and conditions (P>0.05) during PIT was found. CONCLUSIONS Although previous studies have reported that the lower lumbar spine had greater mobility, the lower amount of displacement during the rest position suggests the role of an active subsystem contributing to lumbar stability regardless of sex. CLINICAL REHABILTATION IMPACT A reduction in displacement during the leg raise position across L1 to L4 suggesting an interaction of stabilizing subsystems of the spine to provide lumbar stability.
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Affiliation(s)
- Soniya Maharjan
- Spine Biomechanics Laboratory, Faculty of Physical Therapy, Mahidol University, Nakhon Pathom, Thailand
| | - Khin W Thu
- Spine Biomechanics Laboratory, Faculty of Physical Therapy, Mahidol University, Nakhon Pathom, Thailand
| | - Sasithorn Kongoun
- Spine Biomechanics Laboratory, Faculty of Physical Therapy, Mahidol University, Nakhon Pathom, Thailand
| | - Kanphajee Sornkaew
- Spine Biomechanics Laboratory, Faculty of Physical Therapy, Mahidol University, Nakhon Pathom, Thailand
| | - Jim Richards
- Allied Health Research Unit, University of Central Lancashire, Preston, Lancashire, UK
| | - Peemongkon Wattananon
- Spine Biomechanics Laboratory, Faculty of Physical Therapy, Mahidol University, Nakhon Pathom, Thailand -
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Yasuda T, Jaotawipart S, Kuruma H. Effects of Thoracic Spine Self-mobilization on Patients with Low Back Pain and Lumbar Hypermobility: A Randomized Controlled Trial. Prog Rehabil Med 2023; 8:20230022. [PMID: 37483879 PMCID: PMC10359721 DOI: 10.2490/prm.20230022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 06/06/2023] [Indexed: 07/25/2023] Open
Abstract
Objectives This study used magnetic resonance imaging (MRI) to investigate the effects of thoracic spine self-mobilization on patients with low back pain (LBP) and lumbar hypermobility. Methods Twenty-four patients (15 men, 9 women) with LBP were randomly allocated to a thoracic spine self-mobilization group or sham group. The thoracic spine self-mobilization group performed thoracic spine active flexion and extension activities using two tennis balls fixed with athletic tape. Outcome measures were collected pre-intervention and after 4 weeks and included the Visual Analog Scale (VAS) for pain, the Oswestry Disability Index, lumbar rotation angle measured using MRI taken in the lateral position with 45° of trunk rotation, thoracolumbar rotation range of motion (ROM) in the sitting position, and stiffness of the erector spinae muscles. The effects of the intervention were analyzed using two-way repeated-measures analysis of variance (ANOVA), followed by multiple comparisons. The significance level was set at 5%. Results The results of the two-way repeated measures ANOVA indicated that the main effect of the group was significant (P<0.05) for VAS, the sum of the lumbar rotation angle, and the thoracolumbar rotation ROM. A significant group-by-time interaction was found for the sum of lumbar rotation angles. The results of the multiple comparison tests for VAS, sum of the lumbar rotation angle from L1 to S1, and thoracolumbar rotation ROM were significantly different after 4 weeks. Conclusions This study revealed a decrease in lumbar segmentation after thoracic spine mobilization. Thoracic spine mobilization may be effective in patients with LBP and hypermobility.
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Affiliation(s)
- Toru Yasuda
- Zama General Hospital, Kanagawa, Japan
- Graduate School of Human Health Sciences, Tokyo Metropolitan
University, Tokyo, Japan
| | | | - Hironobu Kuruma
- Graduate School of Human Health Sciences, Tokyo Metropolitan
University, Tokyo, Japan
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Daniel ES, Lee RYW, Williams JM. The reliability of video fluoroscopy, ultrasound imaging, magnetic resonance imaging and radiography for measurements of lumbar spine segmental range of motion in-vivo: A review. J Back Musculoskelet Rehabil 2023; 36:117-135. [PMID: 35988213 DOI: 10.3233/bmr-210285] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Lower back pain (LBP) is a principal cause of disability worldwide and is associated with a variety of spinal conditions. Individuals presenting with LBP may display changes in spinal motion. Despite this, the ability to measure lumbar segmental range of motion (ROM) non-invasively remains a challenge. OBJECTIVE To review the reliability of four non-invasive modalities: Video Fluoroscopy (VF), Ultrasound imaging (US), Magnetic Resonance Imaging (MRI) and Radiography used for measuring segmental ROM in the lumbar spine in-vivo. METHODS The methodological quality of seventeen eligible studies, identified through a systematic literature search, were appraised. RESULTS The intra-rater reliability for VF is excellent in recumbent and upright positions but errors are larger for intra-rater repeated movements and inter-rater reliability shows larger variation. Excellent results for intra- and inter-rater reliability are seen in US studies and there is good reliability within- and between-day. There is a large degree of heterogeneity in MRI and radiography methodologies but reliable results are seen. CONCLUSIONS Excellent reliability is seen across all modalities. However, VF and radiography are limited by radiation exposure and MRI is expensive. US offers a non-invasive, risk free method but further research must determine whether it yields truly consistent measurements.
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Affiliation(s)
| | - Raymond Y W Lee
- Faculty of Technology, University of Portsmouth, Portsmouth, UK
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In vivo measurement of intradiscal pressure changes related to thrust and non-thrust spinal manipulation in an animal model: a pilot study. Chiropr Man Therap 2022; 30:36. [PMID: 36068588 PMCID: PMC9446573 DOI: 10.1186/s12998-022-00445-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 08/01/2022] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND The intervertebral disc is a known back pain generator and is frequently the focus of spinal manipulative therapy evaluation and treatment. The majority of our current knowledge regarding intradiscal pressure (IDP) changes related to spinal manual therapy involves cadaveric studies with their inherent limitations. Additional in vivo animal models are needed to investigate intervertebral disc physiological and molecular mechanisms related to spinal manipulation and spinal mobilization treatment for low back disorders. METHODS Miniature pressure catheters (Millar SPR-1000) were inserted into either the L4-L5 or L5-L6 intervertebral disc of 3 deeply anesthetized adult cats (Oct 2012-May 2013). Changes in IDP were recorded during delivery of instrument-assisted spinal manipulation (Activator V® and Pulstar®) and motorized spinal flexion with/without manual spinous process contact. RESULTS Motorized flexion of 30° without spinous contact decreased IDP of the L4-L5 disc by ~ 2.9 kPa, while physical contact of the L4 spinous process decreased IDP an additional ~ 1.4 kPa. Motorized flexion of 25° with L5 physical contact in a separate animal decreased IDP of the L5-L6 disc by ~ 1.0 kPa. Pulstar® impulses (setting 1-3) increased IDP of L4-L5 and L5-L6 intervertebral discs by ~ 2.5 to 3.0 kPa. Activator V® (setting 1-4) impulses increased L4-L5 IDP to a similar degree. Net changes in IDP amplitudes remained fairly consistent across settings on both devices regardless of device setting suggesting that viscoelastic properties of in vivo spinal tissues greatly dampen superficially applied manipulative forces prior to reaching deep back structures such as the intervertebral disc. CONCLUSIONS This study marks the first time that feline in vivo changes in IDP have been reported using clinically available instrument-assisted spinal manipulation devices and/or spinal mobilization procedures. The results of this pilot study indicate that a feline model can be used to investigate IDP changes related to spinal manual therapy mechanisms as well as the diminution of these spinal manipulative forces due to viscoelastic properties of the surrounding spinal tissues. Additional investigation of IDP changes is warranted in this and/or other in vivo animal models to provide better insights into the physiological effects and mechanisms of spinal manual therapy at the intervertebral disc level.
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Langenfeld A, Wirth B, Scherer-Vrana A, Riner F, Gaehwiler K, Valdivieso P, Humphreys BK, Scholkmann F, Flueck M, Schweinhardt P. No alteration of back muscle oxygenation during isometric exercise in individuals with non-specific low back pain. Sci Rep 2022; 12:8306. [PMID: 35585081 PMCID: PMC9117220 DOI: 10.1038/s41598-022-11683-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 04/27/2022] [Indexed: 11/16/2022] Open
Abstract
The aim of our study was (I) To compare back muscle oxygenation and perfusion as well as Biering–Sorensen muscle endurance (BSME) test holding times between chronic non-specific low back pain (CNSLBP) patients and asymptomatic controls matched for age, body mass index (BMI), sex and physical activity, and (II) to investigate factors associated with BSME holding times. Muscle perfusion (tHb) and oxygenation (SmO2) were measured by near-infrared spectroscopy (NIRS) based oximetry in three back muscles during the BSME. Reliability of tHb and SmO2 was assessed in a separate sample. BSME holding time and SmO2 were compared between patients (n = 45) and controls (n = 45) and factors associated with BSME holding time were assessed using multiple linear regression. Reliability for SmO2 was excellent (ICC = 0.87–0.99). THb showed poor to moderate reliability and was not further used. Groups differed for BSME holding time (P = 0.03), pain intensity (P ≤ 0.0005) and subcutaneous tissue thickness (P = 0.01) but not for NIRS measures. Physical activity and BMI were associated with BSME holding times. Insufficient muscle oxygenation does not seem to be a major factor contributing to CNSLBP. Future investigation should evaluate other determinants of BSME holding times, such as motivation and recruitment of auxiliary muscles.
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Affiliation(s)
- Anke Langenfeld
- Department of Chiropractic Medicine, Balgrist University Hospital and University of Zurich, Forchstrasse 340, 8008, Zurich, Switzerland.
| | - Brigitte Wirth
- Department of Chiropractic Medicine, Balgrist University Hospital and University of Zurich, Forchstrasse 340, 8008, Zurich, Switzerland.,Winterthur Institute of Health Economics, School of Management and Law, University of Applied Sciences, Gertrudstr. 15, 8400, Winterthur, Switzerland
| | - Andrea Scherer-Vrana
- Department of Chiropractic Medicine, Balgrist University Hospital and University of Zurich, Forchstrasse 340, 8008, Zurich, Switzerland
| | - Fabienne Riner
- Department of Chiropractic Medicine, Balgrist University Hospital and University of Zurich, Forchstrasse 340, 8008, Zurich, Switzerland
| | - Kyra Gaehwiler
- Department of Chiropractic Medicine, Balgrist University Hospital and University of Zurich, Forchstrasse 340, 8008, Zurich, Switzerland
| | - Paola Valdivieso
- Laboratory of Muscle Plasticity, Balgrist University Hospital and University of Zurich, Balgrist Campus, Lengghalde 5, 8008, Zurich, Switzerland
| | - B Kim Humphreys
- Department of Chiropractic Medicine, Balgrist University Hospital and University of Zurich, Forchstrasse 340, 8008, Zurich, Switzerland
| | - Felix Scholkmann
- Scholkmann Data Analysis Services, Scientific Consulting and Physical Engineering, Schuppisstr. 5, 8057, Zurich, Switzerland.,Department for Neonatology, University Hospital Zurich and University of Zurich, Rämistrasse 100, 8091, Zurich, Switzerland
| | - Martin Flueck
- Laboratory of Muscle Plasticity, Balgrist University Hospital and University of Zurich, Balgrist Campus, Lengghalde 5, 8008, Zurich, Switzerland.,Swiss Federal Institute of Sport Magglingen SFISM, Lärchenplatz building HLP 107, 2532, Magglingen, Switzerland
| | - Petra Schweinhardt
- Department of Chiropractic Medicine, Balgrist University Hospital and University of Zurich, Forchstrasse 340, 8008, Zurich, Switzerland
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Are rotational passive stiffness and translational passive stiffness correlated? A porcine in vitro study. Clin Biomech (Bristol, Avon) 2022; 94:105610. [PMID: 35279438 DOI: 10.1016/j.clinbiomech.2022.105610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 02/22/2022] [Accepted: 03/01/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND Qualitative clinical assessments of spinal stiffness have been demonstrated to show moderate correlations with one-another. We hypothesized that these correlations would improve in an in vitro model of the functional spinal unit. If the stiffness of spinal units are different across loading regimes (e.g. flexion-extension versus shear), then it may provide one explanation as to the variability in findings from clinical assessments, since these tests tend not to discriminate rotational and translational degrees-of-freedom. Therefore, the purpose of this investigation was to quantify the relationships between rotational and translational stiffness measures in vitro. METHODS Forty-eight porcine cervical spine functional units were used in this investigation (20 C3-C4, 28 C5-C6). While under constant 300 N compressive load, range-of-motion tests for both flexion-extension (± 8 Nm, 0.5 deg./s) and anteroposterior shear (± 400 N, 0.2 mm/s) were conducted, to quantify moment-angle and force-deflection curves. Representative stiffness values were then obtained for flexion, extension, anterior shear, and posterior shear using segmented regression. The correlation matrix between these four measures was then used to explore their potential relationships. FINDINGS Of the six correlations conducted, only the relationship between posterior shear and extension stiffness was statistically significant (p = 0.014), despite featuring a low correlation coefficient (R2 = 0.123). INTERPRETATION The poor correlations between stiffness metrics in this study supports the disparate findings of tissue stiffness in vivo. Results from this investigation suggest that clinicians should be cognizant of which degrees-of-freedom they are assessing in the spine, as their stiffness values vary independently.
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Dugailly PM, Dethier C, Salem W. Immediate alteration of the lumbar intervertebral foramen during the so-called osteopathic locking technique: A preliminary analysis on healthy subjects. INT J OSTEOPATH MED 2021. [DOI: 10.1016/j.ijosm.2021.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Braunstein J, Hipp JA, Browning R, Grieco TF, Reitman CA. Analysis of translation and angular motion in loaded and unloaded positions in the lumbar spine. NORTH AMERICAN SPINE SOCIETY JOURNAL (NASSJ) 2020; 4:100038. [PMID: 35141606 PMCID: PMC8819970 DOI: 10.1016/j.xnsj.2020.100038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 09/17/2020] [Accepted: 11/16/2020] [Indexed: 12/02/2022]
Abstract
Background Context Abnormalities in intervertebral rotation and translation are important to diagnosis and treatment planning for common spinal disorders. Tests that do not sufficiently load the spine can result in mis-diagnosed motion abnormalities. Upright flexion and extension x-rays are commonly used despite known limitations. Additional evidence is needed in support of preliminary studies suggesting that the change from standing to supine may sufficiently stress the spine to diagnose motion abnormalities. Purpose Compare intervertebral translation between flexion and extension to translation between upright and supine positions in a representative clinical population. Study Design/Setting Prospective analysis of images retrospectively collected from routine clinical practices. Methods After obtaining IRB approval for analysis of previously obtained images, patients were identified via chart reviews where a neutral-lateral x-ray and an MRI or CT exam were obtained for diagnosis of a spinal disorder and where flexion-extension x-rays had been obtained to help diagnose abnormal intervertebral motion. The mid-sagittal slice from the MRI or CT exam was paired with the neutral-lateral radiograph. Intervertebral translation at the L4-L5 and L5-S1 levels between supine and standing and between flexion and extension were measured from the images using previously validated methods. The translations were classified as normal or abnormal with reference to a previously obtained database of intervertebral motion in radiographically normal and asymptomatic volunteers. Results At the L5-S1 level in particular, there tended to be greater translation between the supine and standing than between upright flexion and extension. On average, translations were below that found in asymptomatic volunteers. No abnormal translations were detected from flexion-extension radiographs whereas approximately 7% of levels had abnormal translations between supine and upright positions. Conclusions Intervertebral translations between supine and standing, measured using the mid-sagittal slice from a MRI or CT exam and a lateral x-ray with the patient standing can help to identify abnormal motion. This would be particularly valuable for patients with limited flexion and extension. This study thereby adds to the evidence in support of measuring intervertebral motion between the supine and upright positions to detect abnormal intervertebral motion.
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Affiliation(s)
- Jacob Braunstein
- Medical University of South Carolina Department of Orthopaedics and Physical Medicine. Charleston, SC
| | - John A. Hipp
- Medical Metrics Diagnostics, Inc, Houston, TX USA
- Corresponding author.
| | - Robert Browning
- Rush University Department of Orthopedic Surgery. Chicago, IL USA
| | | | - Charles A. Reitman
- Medical University of South Carolina Department of Orthopaedics and Physical Medicine. Charleston, SC
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Tennant LM, Nelson-Wong E, Kuest J, Lawrence G, Levesque K, Owens D, Prisby J, Spivey S, Albin SR, Jagger K, Barrett JM, Wong JD, Callaghan JP. A Comparison of Clinical Spinal Mobility Measures to Experimentally Derived Lumbar Spine Passive Stiffness. J Appl Biomech 2020; 36:397-407. [PMID: 33049702 DOI: 10.1123/jab.2020-0030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 05/12/2020] [Accepted: 06/17/2020] [Indexed: 11/18/2022]
Abstract
Spinal stiffness and mobility assessments vary between clinical and research settings, potentially hindering the understanding and treatment of low back pain. A total of 71 healthy participants were evaluated using 2 clinical assessments (posteroanterior spring and passive intervertebral motion) and 2 quantitative measures: lumped mechanical stiffness of the lumbar spine and local tissue stiffness (lumbar erector spinae and supraspinous ligament) measured via myotonometry. The authors hypothesized that clinical, mechanical, and local tissue measures would be correlated, that clinical tests would not alter mechanical stiffness, and that males would demonstrate greater lumbar stiffness than females. Clinical, lumped mechanical, and tissue stiffness were not correlated; however, gradings from the posteroanterior spring and passive intervertebral motion tests were positively correlated with each other. Clinical assessments had no effect on lumped mechanical stiffness. The males had greater lumped mechanical and lumbar erector spinae stiffness compared with the females. The lack of correlation between clinical, tissue, and lumped mechanical measures of spinal stiffness indicates that the use of the term "stiffness" by clinicians may require reevaluation; clinicians should be confident that they are not altering mechanical stiffness of the spine through segmental mobility assessments; and greater resting lumbar erector stiffness in males suggests that sex should be considered in the assessment and treatment of the low back.
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Sault JD, Jayaseelan DJ, Mischke JJ, Post AA. The Utilization of Joint Mobilization As Part of a Comprehensive Program to Manage Carpal Tunnel Syndrome: A Systematic Review. J Manipulative Physiol Ther 2020; 43:356-370. [PMID: 32861521 DOI: 10.1016/j.jmpt.2020.02.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 10/23/2019] [Accepted: 02/05/2020] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The purpose of this review is to identify the role of joint mobilization for individuals with Carpal tunnel syndrome (CTS). METHODS A systematic search of 5 electronic databases (PubMed, CINAHL, Scopus, Cochrane Central Register of Controlled Trials, and SPORTDiscus) was performed to identify eligible full-text randomized clinical trials related to the clinical question. Joint mobilization had to be included in one arm of the randomized clinical trials to be included. Two reviewers independently participated in each step of the screening process. A blinded third reviewer assisted in cases of discrepancy. The PEDro scale was used to assess quality. RESULTS Ten articles were included after screening 2068 titles. In each article where joint mobilization was used, positive effects in pain, function, or additional outcomes were noted. In most cases, the intervention group integrating joint mobilization performed better than the comparison group not receiving joint techniques. CONCLUSION In the articles reviewed, joint mobilization was associated with positive clinical effects for persons with CTS. No studies used joint mobilization in isolation; therefore, results must be interpreted cautiously. This review indicates that joint mobilization might be a useful adjunctive intervention in the management of CTS.
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Affiliation(s)
- Josiah D Sault
- University of Illinois Hospital and Health Sciences System, Chicago, Illinois
| | - Dhinu J Jayaseelan
- Department of Health, Human Function and Rehabilitation Sciences, The George Washington University, Washington, DC.
| | - John J Mischke
- School of Physical Therapy and Rehabilitation Science, University of Montana, Missoula, Montana
| | - Andrew A Post
- Department of Physical Therapy and Rehabilitation Science, University of Iowa, Iowa City, Iowa
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Sahu PK, Shankar Ganesh G. Physiotherapeutic management of a patient with spinal Schwannoma: A case report. J Bodyw Mov Ther 2020; 24:56-62. [PMID: 31987563 DOI: 10.1016/j.jbmt.2019.05.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Accepted: 05/21/2019] [Indexed: 10/26/2022]
Abstract
INTRODUCTION Tumors are generally considered as red flags to manual therapy. The purpose of this report is to describe the clinical course of a patient diagnosed with spinal Schwannoma at L2-L3 level, who was referred to physiotherapy (PT) for the treatment of low back pain radiating to the left lower limb. CASE DESCRIPTION A 30-year old man previously diagnosed with L2-L3 Schwannoma was referred for physiotherapy for the treatment of radiating pain. The patient had not responded favorably to symptomatic management. As the patient's history and physical examination were consistent with a mechanical dysfunction, it was decided to manage the patient along similar lines. The patient was treated with McKenzie extension and central postero-anterior mobilization over T4-T6 vertebrae. This intervention was followed up with strengthening and aerobic exercises. RESULTS The outcomes were measured by the numerical rating scale (NRS), Oswestry Disability Index (ODI) and the Global rate of Change (GRC) scale. The patient responded well to McKenzie extension exercises and Thoracic mobilization. The NRS (7 at rest; 10 on activity) at the time of referral reduced to (2 on activity) at the time of discharge. The outcomes were maintained after 7 months. CONCLUSION This case suggests that there is a need to undertake a detailed musculoskeletal examination and mobilization may be safely performed in patients diagnosed with spinal schwannomas. An individualized tailored approach may be beneficial in these patients.
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Affiliation(s)
- Pradeep Kumar Sahu
- Neurosciences Centre, All India Institute of Medical Sciences, New Delhi, 110029, India.
| | - G Shankar Ganesh
- Composite Regional Centre for Skill Development, Rehabilitation and Empowerment of Persons with Disabilities, Lucknow, Uttar Pradesh, India.
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Koo TK, Crews RL, Kwok WE. In Vivo Measurement of the Human Lumbar Spine Using Magnetic Resonance Imaging to Ultrasound Registration. J Manipulative Physiol Ther 2019; 42:343-352. [PMID: 31255312 DOI: 10.1016/j.jmpt.2019.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 03/08/2019] [Accepted: 03/30/2019] [Indexed: 11/18/2022]
Abstract
OBJECTIVE This study aimed to refine a magnetic resonance imaging (MRI)-ultrasound registration (ie, alignment) technique to make noninvasive, nonionizing, 3-dimensional measurement of the lumbar segmental motion in vivo. METHODS Five healthy participants participated in this validation study. We scanned the lumbar region of each participant 5 times using an ultrasound probe while he or she kept a prone lying posture on a plinth. Participant-specific models of L1-L5 were constructed from magnetic resonance (MR) images and aligned with the 3-dimensional ultrasound dataset of each scan using 4 variants of MRI-ultrasound registration approach (simplified intensity-based registration [1] with and [2] without including the transverse processes and their surrounding soft tissues [denoted as TP complex]; and hierarchical intensity-based registration [3] with and [4] without including the TP complex). The robustness and precision of these registration approaches were compared. RESULTS Although all registration approaches converged to a similar solution, excluding the TP complex improved the percentage of successful registration from 92% to 100%. There was no significant difference in the precision among the 4 MRI-ultrasound registration variants. For the simplified intensity-based registration without including the TP complex, average precision at each degree of freedom was 1.33° (flexion-extension), 2.48° (lateral bending), 1.32° (axial rotation), 2.15 mm (left/right), 1.08 mm (anterior-posterior), and 1.16 (superior-inferior), respectively. CONCLUSION Given that using simplified intensity-based MRI-ultrasound registration can substantially streamline the registration process and excluding the TP complex would improve the robustness of the registration, we conclude that this combination is the method of choice for in vivo human applications.
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Affiliation(s)
- Terry K Koo
- Foot Levelers Biomechanics Research Laboratory, New York Chiropractic College, Seneca, Falls, NY.
| | - Robert L Crews
- Foot Levelers Biomechanics Research Laboratory, New York Chiropractic College, Seneca, Falls, NY
| | - Wingchi E Kwok
- Department of Imaging Sciences, University of Rochester, University of Rochester Center for Advanced Brain Imaging & Neurophysiology, Rochester, NY
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Berry DB, Hernandez A, Onodera K, Ingram N, Ward SR, Gombatto SP. Lumbar spine angles and intervertebral disc characteristics with end-range positions in three planes of motion in healthy people using upright MRI. J Biomech 2019; 89:95-104. [PMID: 31047693 DOI: 10.1016/j.jbiomech.2019.04.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 04/02/2019] [Accepted: 04/12/2019] [Indexed: 12/17/2022]
Abstract
Understanding changes in lumbar spine (LS) angles and intervertebral disc (IVD) behavior in end-range positions in healthy subjects can provide a basis for developing more specific LS models and comparing people with spine pathology. The purposes of this study are to quantify 3D LS angles and changes in IVD characteristics with end-range positions in 3 planes of motion using upright MRI in healthy people, and to determine which intervertebral segments contribute most in each plane of movement. Thirteen people (average age = 24.4 years, range 18-51 years; 9 females; BMI = 22.4 ± 1.8 kg/m2) with no history of low back pain were scanned in an upright MRI in standing, sitting flexion, sitting axial rotation (left, right), prone on elbows, prone extension, and standing lateral bending (left, right). Global and local intervertebral LS angles were measured. Anterior-posterior length of the IVD and location of the nucleus pulposus was measured. For the sagittal plane, lower LS segments contribute most to change in position, and the location of the nucleus pulposus migrated from a more posterior position in sitting flexion to a more anterior position in end-range extension. For lateral bending, the upper LS contributes most to end-range positions. Small degrees of intervertebral rotation (1-2°) across all levels were observed for axial plane positions. There were no systematic changes in IVD characteristics for axial or coronal plane positions.
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Affiliation(s)
- David B Berry
- Department of Bioengineering, University of California San Diego, La Jolla, CA, USA
| | - Alejandra Hernandez
- Doctor of Physical Therapy Program, School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA, USA
| | - Keenan Onodera
- Department of Orthopaedic Surgery, University of California San Diego, La Jolla, CA, USA
| | - Noah Ingram
- Doctor of Physical Therapy Program, School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA, USA
| | - Samuel R Ward
- Department of Bioengineering, University of California San Diego, La Jolla, CA, USA; Department of Orthopaedic Surgery, University of California San Diego, La Jolla, CA, USA; Department of Radiology, University of California San Diego, La Jolla, CA, USA
| | - Sara P Gombatto
- Doctor of Physical Therapy Program, School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA, USA.
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Weber CI, Hwang CT, van Dillen LR, Tang SY. Effects of standing on lumbar spine alignment and intervertebral disc geometry in young, healthy individuals determined by positional magnetic resonance imaging. Clin Biomech (Bristol, Avon) 2019; 65:128-134. [PMID: 31031229 PMCID: PMC6613826 DOI: 10.1016/j.clinbiomech.2019.04.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 04/11/2019] [Accepted: 04/15/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Most diagnostic imaging of the spine is performed in supine, a relatively unloaded position. Although the spine is subjected to functional loading that changes the spinal alignment and intervertebral disc geometry, little data exists on how healthy spines adapt to standing. This study seeks to quantify the changes of the lumbar spine from supine to standing in young, back-healthy individuals using a positional magnetic resonance imaging system. METHODS This is an observational study that examined the changes in the lumbar spine alignment and intervertebral disc geometry between supine and standing of forty participants (19 males/21 females) without a history of low back pain. The regional lumbar spinal alignment was measured by the sagittal Cobb angle. Segmental intervertebral disc measurements included the segmental Cobb angle, anterior-to-posterior height ratio, and intervertebral disc width measured at L1/L2 - L5/S1 levels. Intra-class correlation was performed for intra- and inter-observer measurements. FINDINGS The intra-observer intra-class correlation consistency model ranged from 0.76 to 0.98 with the inter-observer correlation ranging from 0.68 to 0.99. The Cobb angle decreased in standing. The L5/S1 segmental Cobb angle decreased in standing. The L2/L3 and L3/L4 anterior-to-posterior height ratios increased and the L5/S1 anterior-to-posterior height ratio decreased in standing. No difference in intervertebral disc widths was observed from supine to standing. INTERPRETATIONS We established normative data for a back-healthy population, using a positional magnetic resonance imaging system, that could inform future investigations that examine the standing-induced adaptations of the lumbar spine in individuals with spinal or intervertebral disc pathologies.
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Affiliation(s)
- Christian I Weber
- Biomedical Engineering, Washington University in St. Louis, St. Louis, MO, USA
| | - Ching-Ting Hwang
- Movement Science Program, Washington University in St. Louis, St. Louis, MO, USA
| | - Linda R van Dillen
- Physical Therapy, Washington University in St. Louis, St. Louis, MO, USA; Orthopaedic Surgery, Washington University in St. Louis, St. Louis, MO, USA
| | - Simon Y Tang
- Biomedical Engineering, Washington University in St. Louis, St. Louis, MO, USA; Orthopaedic Surgery, Washington University in St. Louis, St. Louis, MO, USA.
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Ganesh S, Kumar M. Physiotherapist management of a patient with spastic perineal syndrome and subsequent constipation: a case report. Physiother Theory Pract 2019; 37:242-251. [PMID: 30983479 DOI: 10.1080/09593985.2019.1603259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Background and Purpose: The purpose of this case report is to describe the benefits of manual therapy techniques, including mobilization and stretching, in the management of a patient with chronic constipation. Case Description: A 17-year-old male with an 8-month history of constipation and complaint of incomplete evacuation after defecation was referred for therapy. The patient was diagnosed with a spastic perineal syndrome. Isolated puborectalis relaxation exercise was not successful in alleviating constipation. Physical examination showed tightness of left side piriformis, thoracic kyphosis, apparent limb shortening on the left side, and a right-on-right sacrum forward torsion. The patient was treated with stretching of left piriformis and mobilization of thoracic and lumbar vertebrae and sacroiliac joints along with puborectalis relaxation exercises. Outcomes: After 4 weeks of treatment, there was a reduction in Bowel Function Index (BFI) from 74.6 to 27.2. The patient also reported spending less time (<3 minutes) during defecation. The patient maintained his improvement at 7 months. Discussion: A detailed neuromuscular examination assisted in identifying the pathophysiology related to obstructive defecation for this patient. Controlled studies regarding the effectiveness of various physiotherapy interventions in the treatment of obstructive constipation are warranted.
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Affiliation(s)
- Shankar Ganesh
- Department of Physiotherapy, Composite Regional Center for Skill Development, Rehabilitation, and Empowerment of Persons with Disabilities., Composite Regional Centre for Persons with Disabilities , Lucknow, India
| | - Mritunjay Kumar
- PhyWorld Physiotherapy Clinic, Arjun Marg, Defence Colony , New Delhi, India
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Analyzing the Influence of Modic Changes on Patients with Lower Back Pain Undergoing Conservative Treatment. Pain Res Manag 2019; 2019:8185316. [PMID: 31015885 PMCID: PMC6444235 DOI: 10.1155/2019/8185316] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 03/03/2019] [Indexed: 12/19/2022]
Abstract
Objective This study aimed to investigate if the presence of Modic changes (MCs) was correlated with lower back pain (LBP) and LBP-related disability in patients who underwent nonsurgical treatment. Methods In this study, 129 patients who experienced consecutive LBP and underwent lumbar spine magnetic resonance imaging in our institute were divided into three groups according to the presence or type of MCs. The Oswestry Disability Index (ODI) and visual analog scale (VAS) were used to assess the outcomes of the treatment. Results Based on the achieved results, there was no significant difference between three groups before treatment (P > 0.05). Three months after undergoing nonsurgical treatment, the rates of improved ODI and VAS scores were statistically significantly different (P=0.014, 0.023). After an additional 3 months of treatment, in patients with Modic type I changes, the symptoms significantly improved in comparison with those 3 months prior (P=0.037, 0.026), while that improvement did not occur in patients with Modic type II changes (P > 0.05). Conclusions The existence of MCs affects the outcomes of nonsurgical treatment in patients with LBP. However, symptoms can be improved after an additional round of treatment for Modic type I changes, while this is not confirmed for Modic type II changes.
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Kinematics of the Spine During Sit-to-Stand Movement Using Motion Analysis Systems: A Systematic Review of Literature. J Sport Rehabil 2019; 28:77-93. [PMID: 28952872 DOI: 10.1123/jsr.2017-0147] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 07/18/2017] [Accepted: 08/22/2017] [Indexed: 11/18/2022]
Abstract
CONTEXT Clinical evaluation of the spine is commonplace in musculoskeletal therapies, such as physiotherapy, physical medicine/rehabilitation, osteopathic, and chiropractic clinics. Sit-to-stand (STS) is one of the most mechanically demanding daily activities and crucial to independence. Difficulty or inability to perform STS is common in individuals with a variety of motor disabilities, such as low back pain (LBP). OBJECTIVE The purpose of this systematic review was to evaluate available evidence in literature to determine 2-dimensional and 3-dimensional kinematics of the spine during STS in patients with LBP and healthy young adult participants using motion analysis systems (electromagnetic and marker based). METHODS Electronic databases (PubMed/MEDLINE [National Library of Medicine], Scopus, ScienceDirect, and Google Scholar) were searched between January 2002 and February 2017. Additionally, the reference lists of the articles that met the inclusion criteria were also searched. Prospective studies published in peer-reviewed journals, with full text available in English, investigating the kinematics of the spine during STS in healthy subjects (mean age between 18 and 50 y) or in patients with LBP using motion analysis systems, were included. Sixteen studies fulfilled the eligibility criteria. All information relating to methodology and kinematic modeling of the spine segments along with the outcome measures was extracted from the studies identified for synthesis. RESULTS The results indicated that the kinematics of the spine are greatly changed in patients with LBP. In order to develop a better understanding of spine kinematics, studies recommended that the trunk should be analyzed as a multisegment. It has been shown that there is no difference between the kinematics of patients with LBP and healthy population when the spine is analyzed as a single segment. Furthermore, between-gender differences are present during STS movement. CONCLUSION This review provided a valuable summary of the research to date examining the kinematics of the spine during STS.
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Sault JD, Post AA, Butler AY, O'Hearn MA. Mobilization of the lumbar spine in a 76-year-old male with mechanical low back pain and an abdominal aortic aneurysm: A case report. Physiother Theory Pract 2018; 36:855-862. [PMID: 30198815 DOI: 10.1080/09593985.2018.1511019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
BACKGROUND Abdominal aortic aneurysms (AAAs) are found in 1-12% of older males. Low back pain (LBP) is prevalent with incidence increasing with age and can respond to manual therapy (MT). To date, the safety of the application of MT for LBP in the presence of a known AAA has not been reported. This case reports on the short-term effects of MT in a patient with LBP and AAA and pre- and post-therapy imaging. CASE DESCRIPTION A 76-year-old male presented with mechanical LBP, groin pain, and a known 4.2-cm AAA. A lumbar magnetic resonance imaging showed significant multilevel abnormalities. Abdominal screening did not elicit back or groin pain. Lumbar and hip range of motion and accessory motion testing reproduced his complaints. He was treated with lumbar and hip MT. OUTCOMES After three visits, he reported that his groin pain resolved, and his back pain could be managed with home exercise. He reported a +6 on the global rating of change. Repeated follow-up imaging of his AAA demonstrated no significant change of his AAA. DISCUSSION No immediate adverse events were recorded, and repeated follow-up imaging indicated no significant AAA expansion. Considering that mobilization causes similar displacement to active motion, research into the safety of MT in this population is warranted as are guidelines for appropriate initial and ongoing clinical screening during treatment in this population.
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Affiliation(s)
- Josiah D Sault
- Outpatient Physical Therapy, University of Illinois Hospital and Health Sciences System , Chicago, IL, USA
| | - Andrew A Post
- Outpatient Physical Therapy, University of Illinois Hospital and Health Sciences System , Chicago, IL, USA
| | - Amanda Y Butler
- Outpatient Physical Therapy, University of Illinois Hospital and Health Sciences System , Chicago, IL, USA
| | - Michael A O'Hearn
- Rehabilitation Services, Lakeland Regional Health System , St. Joseph, MI, USA
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du Rose A. Have Studies that Measure Lumbar Kinematics and Muscle Activity Concurrently during Sagittal Bending Improved Understanding of Spinal Stability and Sub-System Interactions? A Systematic Review. Healthcare (Basel) 2018; 6:healthcare6030112. [PMID: 30205578 PMCID: PMC6163188 DOI: 10.3390/healthcare6030112] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 08/15/2018] [Accepted: 09/07/2018] [Indexed: 11/26/2022] Open
Abstract
In order to improve understanding of the complex interactions between spinal sub-systems (i.e., the passive (ligaments, discs, fascia and bones), the active (muscles and tendons) and the neural control systems), it is necessary to take a dynamic approach that incorporates the measurement of multiple systems concurrently. There are currently no reviews of studies that have investigated dynamic sagittal bending movements using a combination of electromyography (EMG) and lumbar kinematic measurements. As such it is not clear how understanding of spinal stability concepts has advanced with regards to this functional movement of the spine. The primary aim of this review was therefore to evaluate how such studies have contributed to improved understanding of lumbar spinal stability mechanisms. PubMed and Cochrane databases were searched using combinations of the keywords related to spinal stability and sagittal bending tasks, using strict inclusion and exclusion criteria and adhering to PRISMA guidelines. Whilst examples of the interactions between the passive and active sub-systems were shown, typically small sample sizes meant that results were not generalizable. The majority of studies used regional kinematic measurements, and whilst this was appropriate in terms of individual study aims, the studies could not provide insight into sub-system interaction at the level of the spinal motion segment. In addition, the heterogeneity in methodologies made comparison between studies difficult. The review suggests that since Panjabi’s seminal spinal control papers, only limited advancement in the understanding of these theories has been provided by the studies under review, particularly at an inter-segmental level. This lack of progression indicates a requirement for new research approaches that incorporate multiple system measurements at a motion segment level.
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Affiliation(s)
- Alister du Rose
- Faculty of Life Sciences and Education, University of South Wales, Treforest, Pontypridd, Wales CF37 1DL, UK.
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Thiry P, Reumont F, Brismée JM, Dierick F. Short-term increase in discs' apparent diffusion is associated with pain and mobility improvements after spinal mobilization for low back pain. Sci Rep 2018; 8:8281. [PMID: 29844484 PMCID: PMC5974269 DOI: 10.1038/s41598-018-26697-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 05/17/2018] [Indexed: 12/17/2022] Open
Abstract
Pain perception, trunk mobility and apparent diffusion coefficient (ADC) within all lumbar intervertebral discs (IVDs) were collected before and shortly after posterior-to-anterior (PA) mobilizations in 16 adults with acute low back pain. Using a pragmatic approach, a trained orthopaedic manual physical therapist applied PA mobilizations to the participants' spine, in accordance with his examination findings. ADC all was computed from diffusion maps as the mean of anterior (ADC ant ), middle (ADC mid ), and posterior (ADC post ) portions of the IVD. After mobilization, pain ratings and trunk mobility were significantly improved and a significant increase in ADC all values was observed. The greatest ADC all changes were observed at the L3-L4 and L4-L5 levels and were mainly explained by changes in ADC ant and ADC post , respectively. No significant changes in ADC were observed at L5-S1 level. The reduction in pain and largest changes in ADC observed at the periphery of the hyperintense IVD region suggest that increased peripheral random motion of water molecules is implicated in the IVD nociceptive response modulation. Additionally, ADC changes were observed at remote IVD anatomical levels that did not coincide with the PA spinal mobilization application level.
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Affiliation(s)
- Paul Thiry
- OMT Skills, Private physical therapy practice, La Louvière, 7100, Belgium
| | - François Reumont
- OMT Skills, Private physical therapy practice, La Louvière, 7100, Belgium
| | - Jean-Michel Brismée
- Center for Rehabilitation Research and Department of Rehabilitation Sciences, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
| | - Frédéric Dierick
- Forme & Fonctionnement Humain Lab, Physical Therapy Department, CERISIC, Haute Ecole Louvain en Hainaut, Montignies-sur-Sambre, 6061, Belgium. .,Université catholique de Louvain, Faculty of Motor Sciences, Louvain-la-Neuve, 1348, Belgium.
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Borotikar B, Lempereur M, Lelievre M, Burdin V, Ben Salem D, Brochard S. Dynamic MRI to quantify musculoskeletal motion: A systematic review of concurrent validity and reliability, and perspectives for evaluation of musculoskeletal disorders. PLoS One 2017; 12:e0189587. [PMID: 29232401 PMCID: PMC5726646 DOI: 10.1371/journal.pone.0189587] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 11/29/2017] [Indexed: 11/30/2022] Open
Abstract
Purpose To report evidence for the concurrent validity and reliability of dynamic MRI techniques to evaluate in vivo joint and muscle mechanics, and to propose recommendations for their use in the assessment of normal and impaired musculoskeletal function. Materials and methods The search was conducted on articles published in Web of science, PubMed, Scopus, Academic search Premier, and Cochrane Library between 1990 and August 2017. Studies that reported the concurrent validity and/or reliability of dynamic MRI techniques for in vivo evaluation of joint or muscle mechanics were included after assessment by two independent reviewers. Selected articles were assessed using an adapted quality assessment tool and a data extraction process. Results for concurrent validity and reliability were categorized as poor, moderate, or excellent. Results Twenty articles fulfilled the inclusion criteria with a mean quality assessment score of 66% (±10.4%). Concurrent validity and/or reliability of eight dynamic MRI techniques were reported, with the knee being the most evaluated joint (seven studies). Moderate to excellent concurrent validity and reliability were reported for seven out of eight dynamic MRI techniques. Cine phase contrast and real-time MRI appeared to be the most valid and reliable techniques to evaluate joint motion, and spin tag for muscle motion. Conclusion Dynamic MRI techniques are promising for the in vivo evaluation of musculoskeletal mechanics; however results should be evaluated with caution since validity and reliability have not been determined for all joints and muscles, nor for many pathological conditions.
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Affiliation(s)
- Bhushan Borotikar
- Laboratoire de Traitement de l’Information Médicale, INSERM U1101, Brest, France
- IMT Atlantique, Brest, France
- * E-mail:
| | - Mathieu Lempereur
- Laboratoire de Traitement de l’Information Médicale, INSERM U1101, Brest, France
- CHRU de Brest, Hôpital Morvan, Service de Médecine Physique et de Réadaptation, Brest, France
| | | | - Valérie Burdin
- Laboratoire de Traitement de l’Information Médicale, INSERM U1101, Brest, France
- IMT Atlantique, Brest, France
| | - Douraied Ben Salem
- Laboratoire de Traitement de l’Information Médicale, INSERM U1101, Brest, France
- Université de Bretagne Occidentale, Brest, France
- CHRU de Brest, Neuroradiologie, Imagerie Médico-Légale, Brest, France
| | - Sylvain Brochard
- Laboratoire de Traitement de l’Information Médicale, INSERM U1101, Brest, France
- CHRU de Brest, Hôpital Morvan, Service de Médecine Physique et de Réadaptation, Brest, France
- Université de Bretagne Occidentale, Brest, France
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TOPRAK ÇELENAY Ş, ÖZER KAYA D. Relationship of spinal curvature, mobility, and low back pain in womenwith and without urinary incontinence. Turk J Med Sci 2017; 47:1257-1262. [DOI: 10.3906/sag-1609-67] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Spine Kinematics During Prone Extension in People With and Without Low Back Pain and Among Classification-Specific Low Back Pain Subgroups. J Orthop Sports Phys Ther 2016; 46:571-9. [PMID: 27170528 DOI: 10.2519/jospt.2016.6159] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Study Design Cross-sectional observational design. Background Spine extension is used in physical therapy during examination and treatment for low back pain (LBP). However, kinematics during prone extension have not been examined using 3-D motion capture. Objectives The primary purpose was to determine differences in spine kinematics during prone extension between subjects with and without LBP. An exploratory analysis was conducted to examine kinematic differences among LBP subgroups. Methods Kinematics of the thoracic and lumbar spine were examined during prone extension, using optical motion capture, in 18 subjects with LBP and 17 subjects without LBP (control group). Excursion of each spinal region was calculated for the entire movement and during 25% increments of extension movement duration. Subjects with LBP were examined and assigned to subgroups using 3 different classification systems for LBP. Repeated-measures analysis-of-variance tests were used to examine effects of group (LBP, control), spine region, and increment of movement duration, and to explore effects of LBP subgroup. Results For spine kinematics, there was a significant group-by-region interaction effect (P<.05). Subjects with LBP displayed less lower lumbar extension (13.3° ± 4.9°) than control subjects (21.4° ± 9.2°). The majority of lower lumbar extension occurred during the first 50% of the motion for subjects with LBP. Subgroup-by-region interaction effects were significant for 2 of 3 LBP classification systems (P<.05). Conclusion Subjects with LBP displayed less lower lumbar extension than control subjects during prone extension. These differences should be considered when evaluating and prescribing prone extension. The interpretation of subgroup differences with prone extension kinematics is limited in the current study by the small sample size, but may need to be considered in future studies of spine kinematics. Level of Evidence Diagnosis, level 4. J Orthop Sports Phys Ther 2016;46(7):571-579. Epub 12 May 2016. doi:10.2519/jospt.2016.6159.
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Björnsdóttir SV, Guðmundsson G, Auðunsson GA, Matthíasson J, Ragnarsdóttir M. Posterior-anterior(PA) pressure Puffin for measuring and treating spinal stiffness: Mechanism and repeatability. ACTA ACUST UNITED AC 2015; 22:72-9. [PMID: 26559318 DOI: 10.1016/j.math.2015.10.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 10/12/2015] [Accepted: 10/19/2015] [Indexed: 11/19/2022]
Abstract
BACKGROUND Posterior-anterior (PA) pressure technique is widely used for assessing and treating spinal segments. PA pressure is manually applied and stiffness is subjectively assessed. The method has been deemed unreliable and is associated with occupational strain. OBJECTIVES To introduce a new ergonomically designed hand-held device measuring spinal stiffness, and to assess its repeatability. DESIGN Quasi experimental study. METHOD A convenience sample of 30 university students, 20-30 years old was used. The participants were tested two consecutive days by two physical therapy students using the new device; the PA pressure Puffin. The spinal segments under study were L1, Th12, Th7 and Th6 which all were tested three times with 9 kg force by both testers, both days. Intra-class correlation coefficients (ICC3,k) were used to assess intra- and inter-tester repeatability and analysis of variance with alpha-level at 0.05 was used to assess differences in joint mobility at the four segments measured. Linear regression analyses were used to assess repeatability. RESULTS Inter-tester and intra-tester coefficients (ICCs) ranged from 0.88 to 0.97 and from 0.83 to 0.97, respectively. There was no significant difference in displacement between Th6 and Th7 but all other joints were significantly different from each other. Displacement was always significantly greater the second day compared with day one (p < 0.05). CONCLUSIONS This close to final prototype of the PA pressure Puffin measures segmental spinal stiffness and its ergonomically designed handle provides a promising tool for physical therapists applying PA pressure. Further research is needed for validation and reliability assessments.
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Affiliation(s)
| | | | | | | | - María Ragnarsdóttir
- Landspítali - The National University Hospital of Iceland, Reykjavík, Iceland
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Sagittal Thoracic and Lumbar Spine Profiles in Upright Standing and Lying Prone Positions Among Healthy Subjects: Influence of Various Biometric Features. Spine (Phila Pa 1976) 2015; 40:E900-8. [PMID: 25839386 DOI: 10.1097/brs.0000000000000918] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN A prospective study was performed on the assessment of both thoracic and lumbar spine sagittal profiles (from C7 to S1). OBJECTIVE To propose a new noninvasive method for measuring the spine curvatures in standing and lying prone positions and to analyze their relationship with various biometric characteristics. SUMMARY OF BACKGROUND DATA Modifications of spine curvatures (i.e. lordosis or kyphosis) are of importance in the development of spinal disorders. Studies have emphasized the development of new devices to measure the spine sagittal profiles using a noninvasive and low-cost method. To date, it has not been applied for analyzing both lumbar and thoracic alterations for various positioning. METHODS Seventy-five healthy subjects (mean 22.6 ± 4.3 yr) were recruited to participate in this study. Thoracic and lumbar sagittal profiles were assessed in standing and lying prone positions using a 3D digitizer. In addition, several biometric data were collected including maximal trunk isometric strength for flexion and extension movement. Statistical analysis consisted in data comparisons of spine profiles and a multivariate analysis including biometric features, to classify individuals considering low within- and high between-variability. RESULT Kyphosis and lordosis angles decreased significantly from standing to lying prone position by an average of 13.4° and 16.6°, respectively. Multivariate analysis showed a sample clustering of 3 homogenous subgroups. The first group displayed larger lordosis and flexibility, and had low data values for height, weight, and strength. The second group had lower values than the overall trend of the whole sample, whereas the third group had larger score values for the torques, height, weight, waist, body mass index, and kyphosis angle but a reduced flexibility. CONCLUSION The present results demonstrate a significant effect of the positioning on both thoracic and lumbar spine sagittal profiles and highlight the use of cluster analysis to categorize subgroups after biometric characteristics including curvature measurement. LEVEL OF EVIDENCE N/A.
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Paraspinal Muscle Spindle Response to Intervertebral Fixation and Segmental Thrust Level During Spinal Manipulation in an Animal Model. Spine (Phila Pa 1976) 2015; 40:E752-9. [PMID: 25856263 PMCID: PMC4567492 DOI: 10.1097/brs.0000000000000915] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN In vivo cat model study. OBJECTIVE To determine whether intervertebral facet joint fixation and segmental thrust level alter paraspinal muscle spindle activity during simulated spinal manipulation. SUMMARY OF BACKGROUND DATA Intervertebral motion is commonly assessed by manual therapy practitioners during clinical evaluation and treatment. Mechanoreceptor activity elicited during spinal manipulation has been theorized as a potential mechanism of its efficacy. The degree to which intervertebral fixation and segmental thrust level alter paraspinal muscle spindle activity during high velocity low amplitude spinal manipulation (HVLA-SM) is unclear. METHODS Intervertebral fixation was created by inserting facet screws through the left L(5-6) and L(6-7) and left L(4-5), L(5-6), and L(6-7) facet joints of a cat spine. Changes in the mean instantaneous frequency of L6 muscle spindle discharge were determined during 5 HVLA-SM thrust durations (0-control, 75, 100, 150, 250 ms) delivered at the L4 or L6 spinous process in each of the 3 conditions within the same preparation: laminectomy-only (surgical control; n = 23), L(5-6) and L(6-7) fixations (n = 20), and L(4-5), L(5-6), and L(6-7) fixations (n = 7). Comparisons were made between thrust levels, thrust durations, and spinal joint conditions using a linear mixed model. RESULTS Insertion of facet screws compared with laminectomy-only significantly increased (P < 0.001) lumbar spinal stiffness during L6 HVLA-SM. Compared with laminectomy-only, both the 2 facet screw (100 ms; P < 0.05) and 3 screw conditions [75 ms and 100 ms (P < 0.001), 150 ms (P < 0.005), and 250 ms (P < 0.05)] significantly decreased L6 spindle response during the L6 HVLA-SM. HVLA-SM-delivered 2 segments rostral to the level of muscle spindle input significantly decreases spindle response compared with HVLA-SM-delivered at-level; however, nontarget HVLA-SM still elicits 60% to 80% of at-level muscle spindle response. CONCLUSION Intervertebral fixation decreases paraspinal muscle spindle response during L6 HVLA-SM in a cat model. Whereas HVLA-SM target accuracy maximizes spindle response, nontarget HVLA-SM still elicits substantial levels of muscle spindle activity. LEVEL OF EVIDENCE N/A.
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Slaven EJ, Goode AP, Coronado RA, Poole C, Hegedus EJ. The relative effectiveness of segment specific level and non-specific level spinal joint mobilization on pain and range of motion: results of a systematic review and meta-analysis. J Man Manip Ther 2014; 21:7-17. [PMID: 24421608 DOI: 10.1179/2042618612y.0000000016] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
STUDY DESIGN Systematic literature review and meta-analysis. OBJECTIVE IN SYMPTOMATIC SUBJECTS TO: (1) examine the effects of a single session of joint mobilization on pain at rest and with most painful movement, and (2) compare the effects when joint mobilization is provided to a specific or non-specific spinal level. BACKGROUND Joint mobilization is routinely used for treating spinal pain in conjunction with other interventions, but its unique effect is not well understood. Further, there is controversy about the role of 'specific level' techniques in producing benefit. METHODS Searches were performed for randomized controlled trials (RCTs) using electronic databases (MEDLINE, CINAHL, and PEDro) from 1966 through November 2010. Methodological quality was assessed using previously detailed criteria. Meta-analysis and meta-regression were conducted on eligible studies. RESULTS Eight RCTs with a mean methodological score of 10/12 were included. Significant heterogeneity (P = 0.075) was found in the overall meta-analysis estimate. When stratified by body location, no significant individual effect was found for pain at rest. However, there was a statistical mean difference [0.71 (95% confidence interval: 0.13-1.28)] between pain at rest for the cervical and lumbar individual means. CONCLUSIONS We found multiple studies which provided evidence that a single session of joint mobilization can lead to a reduction of pain at rest and with most painful movement. When using joint mobilization, the need for specific versus non-specific level mobilization may be influenced by anatomical region; the direction of effect in the cervical spine was toward specific mobilization and in the lumbar spine towards non-specific mobilization.
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Schröder J, Braumann KM, Reer R. Wirbelsäulenform- und Funktionsprofile. DER ORTHOPADE 2014; 43:841-9. [DOI: 10.1007/s00132-014-2316-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Proportional lumbar spine inter-vertebral motion patterns: a comparison of patients with chronic, non-specific low back pain and healthy controls. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2014; 23:2059-67. [PMID: 24676852 DOI: 10.1007/s00586-014-3273-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Revised: 03/10/2014] [Accepted: 03/13/2014] [Indexed: 10/25/2022]
Abstract
INTRODUCTION Identifying biomechanical subgroups in chronic, non-specific low back pain (CNSLBP) populations from inter-vertebral displacements has proven elusive. Quantitative fluoroscopy (QF) has excellent repeatability and provides continuous standardised inter-vertebral kinematic data from fluoroscopic sequences allowing assessment of mid-range motion. The aim of this study was to determine whether proportional continuous IV rotational patterns were different in patients and controls. A secondary aim was to update the repeatability of QF measurement of range of motion (RoM) for inter-vertebral (IV) rotation. METHODS AND MATERIALS Fluoroscopic sequences were recorded of passive, recumbent coronal and sagittal motion, which was controlled for range and velocity. Segments L2-5 in 40 primary care CNSLBP patients and 40 matched controls were compared. Patients also completed the von Korff Chronic Pain Grade and Roland and Morris Disability Questionnaire. Sequences were processed using automated image tracking algorithms to extract continuous inter-vertebral rotation data. These were converted to continuous proportional ranges of rotation (PR). The continuous proportional range variances were calculated for each direction and combined to produce a single variable representing their fluctuation (CPRV). Inter- and intra-rater repeatability were also calculated for the maximum IV-RoM measurements obtained during controlled trunk motion to provide an updated indication of the reliability and agreement of QF for measuring spine kinematics. RESULTS CPRV was significantly higher in patients (0.011 vs. 0.008, Mann-Whitney two-sided p = 0.008), implying a mechanical subgroup. Receiver operating characteristic curve analysis found its sensitivity and specificity to be 0.78 % (60-90) and 0.55 % (37-73), respectively (area under the curve 0.672). CPRV was not correlated with pain severity or disability. The repeatability of maximum inter-vertebral range was excellent, but range was only significantly greater in patients at L4-5 in right side bending (p = 0.03). CONCLUSION The variation in proportional motion between lumbar vertebrae during passive recumbent trunk motion was greater in patients with CNSLBP than in matched healthy controls, indicating that biomechanical factors in passive structures play a part.
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Compressive preload reduces segmental flexion instability after progressive destabilization of the lumbar spine. Spine (Phila Pa 1976) 2014; 39:E74-81. [PMID: 24153162 DOI: 10.1097/brs.0000000000000093] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Biomechanical human cadaveric study. OBJECTIVE We hypothesized that increasing compressive preload will reduce the segmental instability after nucleotomy, posterior ligament resection, and decompressive surgery. SUMMARY OF BACKGROUND DATA The human spine experiences significant compressive preloads in vivo due to spinal musculature and gravity. Although the effect of destabilization procedures on spinal motion has been studied, the effect of compressive preload on the motion response of destabilized, multisegment lumbar spines has not been reported. METHODS Eight human cadaveric spines (L1-sacrum, 51.4 ± 14.1 yr) were tested intact, after L4-L5 nucleotomy, after interspinous and supraspinous ligaments transection, and after midline decompression (bilateral laminotomy, partial medial facetectomy, and foraminotomy). Specimens were loaded in flexion (8 Nm) and extension (6 Nm) under 0-N, 200-N, and 400-N compressive follower preload. L4-L5 range of motion (ROM) and flexion stiffness in the high-flexibility zone were analyzed using repeated-measures analysis of variance and multiple comparisons with the Bonferroni correction. RESULTS With a fixed set of loading conditions, a progressive increase in segmental ROM along with expansion of the high-flexibility zone (decrease of flexion stiffness) was noted with serial destabilizations. Application of increasing compressive preload did not substantially change segmental ROM, but did significantly increase the segmental stiffness in the high-flexibility zone. In the most destabilized condition, 400-N preload did not return the segmental stiffness to intact levels. CONCLUSION Anatomical alterations representing degenerative and iatrogenic instabilities are associated with significant increases in segmental ROM and decreased segmental stiffness. Although application of compressive preload, mimicking the effect of increased axial muscular activity, significantly increased the segmental stiffness, it was not restored to intact levels; thereby suggesting that core strengthening alone may not compensate for the loss of structural stability associated with midline surgical decompression. This suggests that there may be a role for surgical implants or interventions that specifically increase flexion stiffness and limit flexion ROM to counteract the iatrogenic instability resulting from surgical decompression. LEVEL OF EVIDENCE N/A.
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Effects of unilateral facet fixation and facetectomy on muscle spindle responsiveness during simulated spinal manipulation in an animal model. J Manipulative Physiol Ther 2013; 36:585-94. [PMID: 24161386 DOI: 10.1016/j.jmpt.2013.08.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Revised: 08/28/2013] [Accepted: 08/29/2013] [Indexed: 01/08/2023]
Abstract
OBJECTIVES Manual therapy practitioners commonly assess lumbar intervertebral mobility before deciding treatment regimens. Changes in mechanoreceptor activity during the manipulative thrust are theorized to be an underlying mechanism of spinal manipulation (SM) efficacy. The objective of this study was to determine if facet fixation or facetectomy at a single lumbar level alters muscle spindle activity during 5 SM thrust durations in an animal model. METHODS Spinal stiffness was determined using the slope of a force-displacement curve. Changes in the mean instantaneous frequency of spindle discharge were measured during simulated SM of the L6 vertebra in the same 20 afferents for laminectomy-only and 19 laminectomy and facet screw conditions; only 5 also had data for the laminectomy and facetectomy condition. Neural responses were compared across conditions and 5 thrust durations (≤ 250 milliseconds) using linear-mixed models. RESULTS Significant decreases in afferent activity between the laminectomy-only and laminectomy and facet screw conditions were seen during 75-millisecond (P < .001), 100-millisecond (P = .04), and 150-millisecond (P = .02) SM thrust durations. Significant increases in spindle activity between the laminectomy-only and laminectomy and facetectomy conditions were seen during the 75-millisecond (P < .001) and 100-millisecond (P < .001) thrust durations. CONCLUSION Intervertebral mobility at a single segmental level alters paraspinal sensory response during clinically relevant high-velocity, low-amplitude SM thrust durations (≤ 150 milliseconds). The relationship between intervertebral joint mobility and alterations of primary afferent activity during and after various manual therapy interventions may be used to help to identify patient subpopulations who respond to different types of manual therapy and better inform practitioners (eg, chiropractic and osteopathic) delivering the therapeutic intervention.
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Association of benign joint hypermobility with spinal segmental motion and its clinical implication in active young males. Spine (Phila Pa 1976) 2013; 38:E1013-9. [PMID: 23846448 DOI: 10.1097/brs.0b013e31828ffa15] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN A retrospective case-control analysis of prospectively collected data. OBJECTIVE First, to evaluate spinal intervertebral mobility in patients with joint hypermobility (JHM) and matched controls without JHM, and second, to investigate the influence of JHM on back pain, disability, and general health status in young males. SUMMARY OF BACKGROUND DATA Despite the significance of benign JHM in the musculoskeletal feature, there have been no studies regarding low back pain and segmental motion in subjects with JHM. Furthermore, the clinical significance of the excessive segmental motion in young males with JHM remains unknown. METHODS The JHM group included 32 subjects who had Beighton scale score of 4 or more according to 9° Beighton scale. The age-matched 32 young males without JHM were selectively included in the control group. In both groups, Oswestry Disability Index (ODI), visual analogue pain scale (VAS) for back pain, and Short-Form 36 was assessed. Radiological sagittal plane motions for each segment and whole lumbar spine were calculated as the difference between the Cobb angle measurements in the flexion and extension plain radiographs. In the lateral radiograph with neutral standing position, the intervertebral disc heights were also measured at each segment. RESULTS The JHM group showed significantly larger range of motion and higher intervertebral disc height at each matched segment than the control group. The JHM group had significant increased VAS for back pain and ODI score, compared with control group. The Short-Form 36 physical function, role physical, role emotional, and physical component summary in the JHM group were significantly lower than in the control group. CONCLUSION This study shows that young males with JHM were found to have excessive lumbar segmental motion that was associated with increased low back pain, disability, and limited physical activity.
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Zaki R, Bulgiba A, Nordin N, Azina Ismail N. A systematic review of statistical methods used to test for reliability of medical instruments measuring continuous variables. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2013; 16:803-7. [PMID: 23997908 PMCID: PMC3758037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Accepted: 10/10/2012] [Indexed: 11/16/2022]
Abstract
OBJECTIVE(S) Reliability measures precision or the extent to which test results can be replicated. This is the first ever systematic review to identify statistical methods used to measure reliability of equipment measuring continuous variables. This studyalso aims to highlight the inappropriate statistical method used in the reliability analysis and its implication in the medical practice. MATERIALS AND METHODS In 2010, five electronic databases were searched between 2007 and 2009 to look for reliability studies. A total of 5,795 titles were initially identified. Only 282 titles were potentially related, and finally 42 fitted the inclusion criteria. RESULTS The Intra-class Correlation Coefficient (ICC) is the most popular method with 25 (60%) studies having used this method followed by the comparing means (8 or 19%). Out of 25 studies using the ICC, only 7 (28%) reported the confidence intervals and types of ICC used. Most studies (71%) also tested the agreement of instruments. CONCLUSION This study finds that the Intra-class Correlation Coefficient is the most popular method used to assess the reliability of medical instruments measuring continuous outcomes. There are also inappropriate applications and interpretations of statistical methods in some studies. It is important for medical researchers to be aware of this issue, and be able to correctly perform analysis in reliability studies.
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Affiliation(s)
- Rafdzah Zaki
- Julius Centre University of Malaya, Department of Social & Preventive Medicine, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia,Corresponding author: Rafdzah Zaki, Julius Centre University of Malaya, Department of Social & Preventive Medicine, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Awang Bulgiba
- Department of Applied Statistics, Faculty of Economics & Administration, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Noorhaire Nordin
- Department of Applied Statistics, Faculty of Economics & Administration, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Noor Azina Ismail
- Department of Applied Statistics, Faculty of Economics & Administration, University of Malaya, 50603, Kuala Lumpur, Malaysia
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Lee NG, Lee JA, Kim JB. A Comparison of Three-dimensional Spine Kinematics during Multidirectional Trunk Movement between Elderly Subjects with Degenerative Spine Disease and Healthy Young Adults. J Phys Ther Sci 2013. [DOI: 10.1589/jpts.25.21] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Nam-Gi Lee
- Department of Physical Therapy, Graduate School, Yonsei University
| | - Jung-Ah Lee
- Department of Motor and Cognitive Rehabilitation, Korea National Rehabilitation Research Institute
| | - Jong-Bae Kim
- Department of Rehabilitation and Assistive Technology, Korea National Rehabilitation Research Institute
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Development and kinematic verification of a finite element model for the lumbar spine: application to disc degeneration. BIOMED RESEARCH INTERNATIONAL 2012; 2013:705185. [PMID: 23509766 PMCID: PMC3591128 DOI: 10.1155/2013/705185] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Accepted: 10/30/2012] [Indexed: 11/24/2022]
Abstract
The knowledge of the lumbar spine biomechanics is essential for clinical applications. Due to the difficulties to experiment on living people and the irregular results published, simulation based on finite elements (FE) has been developed, making it possible to adequately reproduce the biomechanics of the lumbar spine. A 3D FE model of the complete lumbar spine (vertebrae, discs, and ligaments) has been developed. To verify the model, radiological images (X-rays) were taken over a group of 25 healthy, male individuals with average age of 27.4 and average weight of 78.6 kg with the corresponding informed consent. A maximum angle of 34.40° is achieved in flexion and of 35.58° in extension with a flexion-extension angle of 69.98°. The radiological measurements were 33.94 ± 4.91°, 38.73 ± 4.29°, and 72.67°, respectively. In lateral bending, the maximum angles were 19.33° and 23.40 ± 2.39, respectively. In rotation a maximum angle of 9.96° was obtained. The model incorporates a precise geometrical characterization of several elements (vertebrae, discs, and ligaments), respecting anatomical features and being capable of reproducing a wide range of physiological movements. Application to disc degeneration (L5-S1) allows predicting the affection in the mobility of the different lumbar segments, by means of parametric studies for different ranges of degeneration.
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Abstract
Since its founding in Montreal, Canada in 1974, the International Federation of Orthopaedic Manipulative Physical Therapists (IFOMPT) has been providing orthopaedic and manual therapists from around the world with the highest-quality learning opportunities through a conference held every 4 years. In 2012, IFOMPT is partnering with The International Private Practitioners Association (IPPA) to host this prestigious event in Quebec City, Canada. As more than 51% of the Canadian Physiotherapy Association membership is working in private practice, this adds even greater value to this quadrennial event. This conference emulates best-evidence practice in the marriage of research and clinical excellence by pulling together some of the best and brightest hands and minds in orthopaedic physiotherapy. Through a call for proposals that equally emphasized research, clinical excellence, and the knowledge translation link between the two, the IFOMPT mandate of clinical and academic excellence has been kept at the forefront of this year's conference. Included in this supplement are the IFOMPT 2012 keynote addresses, schedule, and abstracts.
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A structured review of spinal stiffness as a kinesiological outcome of manipulation: its measurement and utility in diagnosis, prognosis and treatment decision-making. J Electromyogr Kinesiol 2012; 22:708-23. [PMID: 22683056 DOI: 10.1016/j.jelekin.2012.04.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Revised: 04/20/2012] [Accepted: 04/30/2012] [Indexed: 11/24/2022] Open
Abstract
PURPOSE To review and discuss the methods used for measuring spinal stiffness and factors associated with stiffness, how stiffness is used in diagnosis, prognosis, and treatment decision-making and the effects of manipulative techniques on stiffness. METHODS A systematic search of MEDLINE, EMBASE, CINAHL, AMED and ICL databases was conducted. Included studies addressed one of four constructs related to stiffness: measurement, diagnosis, prognosis and/or treatment decision-making, and the effects of manipulation on stiffness. Spinal stiffness was defined as the relationship between force and displacement. RESULTS One hundred and four studies are discussed in this review, with the majority of studies focused on the measurement of stiffness, most often in asymptomatic persons. Eight studies investigated spinal stiffness in diagnosis, providing limited evidence that practitioner-judged stiffness is associated with radiographic findings of sagittal rotational mobility. Fifteen studies investigated spinal stiffness in prognosis or treatment decision-making, providing limited evidence that spinal stiffness is unlikely to independently predict patient outcomes, though stiffness may influence a practitioner's application of non-thrust manipulative techniques. Nine studies investigating the effects of manipulative techniques on spinal stiffness provide very limited evidence that there is no change in spinal stiffness following thrust or non-thrust manipulation in asymptomatic individuals and non-thrust techniques in symptomatic persons, with only one study supporting an immediate, but not sustained, stiffness decrease following thrust manipulation in symptomatic individuals. CONCLUSIONS The existing limited evidence does not support an association between spinal stiffness and manipulative treatment outcomes. There is a need for additional research investigating the effects of manipulation on spinal stiffness in persons with spinal pain.
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Dodgen E, Stratton E, Bowden A, Howell L. Spinal Implant Development, Modeling, and Testing to Achieve Customizable and Nonlinear Stiffness. J Med Device 2012. [DOI: 10.1115/1.4006543] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
The spine naturally has a nonlinear force-deflection characteristic which facilitates passive stability, and thus there is a need for spinal implants that duplicate this behavior to provide stabilization when the spine loses stiffness through injury, degeneration, or surgery. Additionally, due to the complexity and variability in the mechanics of spinal dysfunction, implants could potentially benefit from incorporating a customizable stiffness into their design. This paper presents a spinal implant with contact-aided inserts that provide a customizable nonlinear stiffness. An analytical model was utilized to optimize the device design, and the model was then verified using a finite element model. Validation was performed on physical prototypes, first in isolation using a tensile tester and then using cadaveric testing on an in-house spine tester. Testing confirmed the performance of the implant and it was observed that the device increased mechanical stability to the spinal segment in flexion-extension and lateral-bending.
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Affiliation(s)
- Eric Dodgen
- Department of Mechanical Engineering, Brigham Young University, Provo, UT 84602
| | - Eric Stratton
- Department of Mechanical Engineering, Brigham Young University, Provo, UT 84602
| | - Anton Bowden
- Department of Mechanical Engineering, Brigham Young University, Provo, UT 84602
| | - Larry Howell
- Department of Mechanical Engineering, Brigham Young University, Provo, UT 84602
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Abstract
The Orthopaedic Section of the American Physical Therapy Association (APTA) has an ongoing effort to create evidence-based practice guidelines for orthopaedic physical therapy management of patients with musculoskeletal impairments described in the World Health Organization’s International Classification of Functioning, Disability, and Health (ICF). The purpose of these low back pain clinical practice guidelines, in particular, is to describe the peer-reviewed literature and make recommendations related to (1) treatment matched to low back pain subgroup responder categories, (2) treatments that have evidence to prevent recurrence of low back pain, and (3) treatments that have evidence to influence the progression from acute to chronic low back pain and disability.
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Hamilton NA, Pressman M, Lillis T, Atchley R, Karlson C, Stevens N. Evaluating Evidence for the Role of Sleep in Fibromyalgia: A Test of the Sleep and Pain Diathesis Model. COGNITIVE THERAPY AND RESEARCH 2011; 36:806-814. [PMID: 24501433 DOI: 10.1007/s10608-011-9421-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The Sleep and Pain Diathesis (SAPD) Model predicts that sleep quality is related to Fibromylagia (FM) outcomes such as disability and depression and that these relationships are mediated by both pain and impaired emotional dysregulation. The purpose of this paper is to provide a preliminary test of this model using cross-sectional data. 35 adult women, who had been living with FM for an average of 13 years, completed a battery of questionnaires that included reports of pain, sleep, affect, and disability. Consistent with this model, FM patients who reported more disrupted sleep also reported higher levels of psychological disability (i.e., BDI depression symptoms) and physical disability. Moreover, the trajectory of the relationship between sleep and pain appears to be mediated by cognitive processes such as increased pain helplessness and, thus, the relationship between sleep and disability appears to be mediated via pain. These data are consistent with the SAPD model, and lend support for the need to include sleep related factors as a critical contributor to our understanding of FM.
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Hamilton NA, Atchley RA, Karlson CW, Taylor D, McCurdy D. The Role of Sleep and Attention in the Etiology and Maintenance of Fibromyalgia. COGNITIVE THERAPY AND RESEARCH 2011. [DOI: 10.1007/s10608-011-9390-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Nowroozi B, Harper C, De Kegel B, Adriaens D, Brainerd E. Regional variation in morphology of vertebral centra and intervertebral joints in striped bass, Morone saxatilis. J Morphol 2011; 273:441-52. [DOI: 10.1002/jmor.11034] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Revised: 09/10/2011] [Accepted: 10/01/2011] [Indexed: 11/12/2022]
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Haughton V. New imaging strategies in degenerative disease of the intervertebral disks: functional spine imaging. Neuroradiol J 2011; 24:560-3. [PMID: 24059713 DOI: 10.1177/197140091102400411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Accepted: 01/03/2011] [Indexed: 11/17/2022] Open
Abstract
As it does for the brain, functional imaging provides additional clinically valuable information on the spine, especially in the problem of back and neck pain. While conventional anatomic spine imaging demonstrates many abnormalities, such as herniation of the intervertebral disk, with nearly perfect accuracy, it does not effectively distinguish incidental degenerative changes in the disk from those that results in pain production. Functional imaging of the spine, still under development and evaluation, will facilitate the identification of painful disks and the selection of patients for innovative treatments that are presently under development. Functional imaging of the spine includes: MR spectroscopy, fMRI of the spinal cord, diffusion imaging, T2 relaxation time, T1 rho measurement and dynamic imaging. The purpose of this presentation is to review the status of these functional MR techniques. MRS: MR spectroscopy demonstrates tissue constituents that have characteristic resonant frequencies. For the disk, the substances that can be recognized in MR spectra and quantified include lactic acid and glycosaminoglycans. Lactic acid has been documented by direct sampling of the disk in painful degenerating disks. With MRS, the concentration of lactic acid is measured non-invasively. In pilot studies, lactic acid concentration effectively distinguishes symptomatic from asymptomatic degenerating disks.
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Affiliation(s)
- V Haughton
- Radiology Department, Wisconsin University Hospitals; Madison, Wisconsin, USA -
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Lumbar facet joint motion in patients with degenerative disc disease at affected and adjacent levels: an in vivo biomechanical study. Spine (Phila Pa 1976) 2011; 36:E629-37. [PMID: 21270686 PMCID: PMC3740386 DOI: 10.1097/brs.0b013e3181faaef7] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Controlled laboratory study. OBJECTIVE To evaluate the effect of lumbar degenerative disc diseases (DDDs) on motion of the facet joints during functional weight-bearing activities. SUMMARY OF BACKGROUND DATA It has been suggested that DDD adversely affects the biomechanical behavior of the facet joints. Altered facet joint motion, in turn, has been thought to associate with various types of lumbar spine pathology including facet degeneration, neural impingement, and DDD progression. However, to date, no data have been reported on the motion patterns of the lumbar facet joint in DDD patients. METHODS Ten symptomatic patients of DDD at L4-S1 were studied. Each participant underwent magnetic resonance images to obtain three-dimensional models of the lumbar vertebrae (L2-S1) and dual fluoroscopic imaging during three characteristic trunk motions: left-right torsion, left-right bending, and flexion-extension. In vivo positions of the vertebrae were reproduced by matching the three-dimensional models of the vertebrae to their outlines on the fluoroscopic images. The kinematics of the facet joints and the ranges of motion (ROMs) were compared with a group of healthy participants reported in a previous study. RESULTS In facet joints of the DDD patients, there was no predominant axis of rotation and no difference in ROMs was found between the different levels. During left-right torsion, the ROMs were similar between the DDD patients and the healthy participants. During left-right bending, the rotation around mediolateral axis at L4-L5, in the DDD patients, was significantly larger than that of the healthy participants. During flexion-extension, the rotations around anterioposterior axis at L4-L5 and around craniocaudal axis at the adjacent level (L3-L4), in the DDD patients, were also significantly larger, whereas the rotation around mediolateral axis at both L2-L3 and L3-L4 levels in the DDD patients were significantly smaller than those of the healthy participants. CONCLUSION DDD alters the ROMs of the facet joints. The rotations can increase significantly not only at the DDD levels but also at their adjacent levels when compared to those of the healthy participants. The increase in rotations did not occur around the primary rotation axis of the torso motion but around the coupled axes. This hypermobility in coupled rotations might imply a biomechanical mechanism related to DDD.
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Passias PG, Wang S, Kozanek M, Xia Q, Li W, Grottkau B, Wood KB, Li G. Segmental lumbar rotation in patients with discogenic low back pain during functional weight-bearing activities. J Bone Joint Surg Am 2011; 93:29-37. [PMID: 21209266 PMCID: PMC3004094 DOI: 10.2106/jbjs.i.01348] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Little information is available on vertebral motion in patients with discogenic low back pain under physiological conditions. We previously validated a combined dual fluoroscopic and magnetic resonance imaging system to investigate in vivo lumbar kinematics. The purpose of the present study was to characterize mechanical dysfunction among patients with confirmed discogenic low back pain, relative to asymptomatic controls without degenerative disc disease, by quantifying abnormal vertebral motion. METHODS Ten subjects were recruited for the present study. All patients had discogenic low back pain confirmed clinically and radiographically at L4-L5 and L5-S1. Motions were reproduced with use of the combined imaging technique during flexion-extension, left-to-right bending, and left-to-right twisting movements. From local coordinate systems at the end plates, relative motions of the cephalad vertebrae with respect to caudad vertebrae were calculated at each of the segments from L2 to S1. Range of motion of the primary rotations and coupled translations and rotations were determined. RESULTS During all three movements, the greatest range of motion was observed at L3-L4. L3-L4 had significantly greater motion than L2-L3 with left-right bending and left-right twisting movements (p < 0.05). The least motion occurred at L5-S1 for all movements; the motion at this level was significantly smaller than that at L3-L4 (p < 0.05). Range of motion during left-right bending and left-right twisting at L3-L4 was significantly larger in the degenerative disc disease group than in the normal group. The range of motion at L4-L5 was significantly larger in the degenerative group than in the normal group during flexion; however, the ranges of motion in both groups were similar during left-to-right bending and left-to-right twisting. CONCLUSIONS The greatest range of motion in patients with discogenic back pain was observed at L3-L4; this motion was greater than that in normal subjects, suggesting that superior adjacent levels developed segmental hypermobility prior to undergoing fusion. L5-S1 had the least motion, suggesting that segmental hypomobility ensues at this level in patients with discogenic low back pain.
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Affiliation(s)
- Peter G. Passias
- Bioengineering Laboratory, Department of Orthopaedic
Surgery, Massachusetts General Hospital, 1215 GRJ, 55 Fruit Street, Boston, MA
02114. E-mail address for P.G. Passias:
| | - Shaobai Wang
- Bioengineering Laboratory, Department of Orthopaedic
Surgery, Massachusetts General Hospital, 1215 GRJ, 55 Fruit Street, Boston, MA
02114. E-mail address for P.G. Passias:
| | - Michal Kozanek
- Bioengineering Laboratory, Department of Orthopaedic
Surgery, Massachusetts General Hospital, 1215 GRJ, 55 Fruit Street, Boston, MA
02114. E-mail address for P.G. Passias:
| | - Qun Xia
- Bioengineering Laboratory, Department of Orthopaedic
Surgery, Massachusetts General Hospital, 1215 GRJ, 55 Fruit Street, Boston, MA
02114. E-mail address for P.G. Passias:
| | - Weishi Li
- Bioengineering Laboratory, Department of Orthopaedic
Surgery, Massachusetts General Hospital, 1215 GRJ, 55 Fruit Street, Boston, MA
02114. E-mail address for P.G. Passias:
| | - Brian Grottkau
- Bioengineering Laboratory, Department of Orthopaedic
Surgery, Massachusetts General Hospital, 1215 GRJ, 55 Fruit Street, Boston, MA
02114. E-mail address for P.G. Passias:
| | - Kirkham B. Wood
- Bioengineering Laboratory, Department of Orthopaedic
Surgery, Massachusetts General Hospital, 1215 GRJ, 55 Fruit Street, Boston, MA
02114. E-mail address for P.G. Passias:
| | - Guoan Li
- Bioengineering Laboratory, Department of Orthopaedic
Surgery, Massachusetts General Hospital, 1215 GRJ, 55 Fruit Street, Boston, MA
02114. E-mail address for P.G. Passias:
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Good CJ. The great subluxation debate: a centrist's perspective. JOURNAL OF CHIROPRACTIC HUMANITIES 2010; 17:33-39. [PMID: 22693474 PMCID: PMC3342801 DOI: 10.1016/j.echu.2010.07.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2010] [Revised: 07/22/2010] [Accepted: 07/22/2010] [Indexed: 06/01/2023]
Abstract
OBJECTIVE This commentary describes the debate and some of the associated issues involving the subluxation construct. DISCUSSION The long-standing debate regarding the chiropractic subluxation has created substantial controversy within the profession. Currently, this phenomenon can be compared with a country with a 2-party system that has a large silent majority sitting between the 2 factions. It is argued that the position held by those in the middle (the centrists) may be the most rational view when considering all of the available evidence. It is also suggested that the subluxation construct is similar to the Santa Claus construct in that both have a factual basis as well as social utility. Ultimately, the centrists must become proactive if they want to protect the profession and further advance the evidence in regard to the subluxation. They must not only engage in the debate, but fund the research that will investigate various aspects of the subluxation and then help disseminate this evidence to fellow doctors of chiropractic, other practitioners, health care policy makers, and society at large. CONCLUSION The role of subluxation in chiropractic practice, the progression of this debate, and the future of the profession will be directly determined by the role that centrists choose to play.
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Affiliation(s)
- Christopher J. Good
- University of Bridgeport College of Chiropractic, 175 4th Ave, Stratford, CT 06615, USA. Cell.: +1 315 406 5842.
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47
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Preuss RA, Popovic MR. Three-dimensional spine kinematics during multidirectional, target-directed trunk movement in sitting. J Electromyogr Kinesiol 2009; 20:823-32. [PMID: 19674918 DOI: 10.1016/j.jelekin.2009.07.005] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2008] [Revised: 07/14/2009] [Accepted: 07/17/2009] [Indexed: 11/16/2022] Open
Abstract
The current study provides a quantitative assessment of three-dimensional spine motion during target-directed trunk movements in sitting. Subjects sat on an elevated surface, without foot support, and targets were placed in five directions, at three subject-specific distances (based on trunk height). Subjects were asked to lean toward the target, touch it with their head, and return to upright sitting. A retro-reflective motion analysis system was used to measure spine motion, using three kinematic trunk models (1, 3 and 7 segments). Significant differences were noted in the total trunk motion measured between the models, as well as between target distances and directions. In the most segmented model, inter-segmental trunk motion was also found to differ between trunk levels, with complex interaction effects involving target distance and direction. These findings suggest that inter-segmental spine motion is complex, task dependent, and often unevenly distributed between spine levels, with motion patterns differing between subjects, even in the absence of pathology. Use of a multi-segmental model provides the most interpretable findings, allowing for differentiation of individual motion patterns of the spine. Such an approach may be beneficial to the understanding of movement-related spine pathologies.
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Affiliation(s)
- Richard A Preuss
- Rehabilitation Engineering Laboratory, Lyndhurst Centre, Toronto Rehabilitation Institute, 520 Sutherland Drive, Toronto, Ontario, Canada.
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48
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Silfies SP, Mehta R, Smith SS, Karduna AR. Differences in Feedforward Trunk Muscle Activity in Subgroups of Patients With Mechanical Low Back Pain. Arch Phys Med Rehabil 2009; 90:1159-69. [PMID: 19501348 DOI: 10.1016/j.apmr.2008.10.033] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2008] [Revised: 09/28/2008] [Accepted: 10/01/2008] [Indexed: 01/22/2023]
Affiliation(s)
- Sheri P Silfies
- Rehabilitation Sciences Research Laboratory, Drexel University, Philadelphia, PA 19102-1192, USA.
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49
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Li G, Wang S, Passias P, Xia Q, Li G, Wood K. Segmental in vivo vertebral motion during functional human lumbar spine activities. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2009; 18:1013-21. [PMID: 19301040 DOI: 10.1007/s00586-009-0936-6] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2008] [Revised: 02/13/2009] [Accepted: 03/05/2009] [Indexed: 10/21/2022]
Abstract
Quantitative data on the range of in vivo vertebral motion is critical to enhance our understanding of spinal pathology and to improve the current surgical treatment methods for spinal diseases. Little data have been reported on the range of lumbar vertebral motion during functional body activities. In this study, we measured in vivo 6 degrees-of-freedom (DOF) vertebral motion during unrestricted weightbearing functional body activities using a combined MR and dual fluoroscopic imaging technique. Eight asymptomatic living subjects were recruited and underwent MRI scans in order to create 3D vertebral models from L2 to L5 for each subject. The lumbar spine was then imaged using two fluoroscopes while the subject performed primary flexion-extension, left-right bending, and left-right twisting. The range of vertebral motion during each activity was determined through a previously described imaging-model matching technique at L2-3, L3-4, and L4-5 levels. Our data revealed that the upper vertebrae had a higher range of flexion than the lower vertebrae during flexion-extension of the body (L2-3, 5.4 +/- 3.8 degrees ; L3-4, 4.3 +/- 3.4 degrees ; L4-5, 1.9 +/- 1.1 degrees , respectively). During bending activity, the L4-5 had a higher (but not significant) range of left-right bending motion (4.7 +/- 2.4 degrees ) than both L2-3 (2.9 +/- 2.4 degrees ) and L3-4 (3.4 +/- 2.1 degrees ), while no statistical difference was observed in left-right twisting among the three vertebral levels (L2-3, 2.5 +/- 2.3 degrees ; L3-4, 2.4 +/- 2.6 degrees ; and L4-5, 2.9 +/- 2.1 degrees , respectively). Besides the primary rotations reported, coupled motions were quantified in all DOFs. The coupled translation in left-right and anterior-posterior directions, on average, reached greater than 1 mm, while in the proximal-distal direction this was less than 1 mm. Overall, each vertebral level responds differently to flexion-extension and left-right bending, but similarly to the left-right twisting. This data may provide new insight into the in vivo function of human spines and can be used as baseline data for investigation of pathological spine kinematics.
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Affiliation(s)
- Guoan Li
- Bioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, MA 02114, USA.
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50
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The influence of ligamentous laxity and gender: implications for hand surgeons. J Hand Surg Am 2009; 34:161-3. [PMID: 19121743 DOI: 10.1016/j.jhsa.2008.09.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2008] [Accepted: 09/09/2008] [Indexed: 02/02/2023]
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