The normal, healthy low back: some functional parameters

Nissan, Moshe; Bar-Ilan, K; Luger, Elchanan; Steinberg, Ely L.; Brown, Sara Nordholm; Dekel, S.

doi:10.3233/bmr-1999-12101

Cited by 8 publications

(1 citation statement)

References 2 publications

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“…Spinal flexibility represents functional trunk mobility 2) , which is functional outcome measure used in clinical and research studies 3,4) . Hence, clinicians need to understand the relationship between degeneration (e.g., spinal-related impairments) and spine kinematics (e.g., interand total segmental movements and angular displacement) in order to treat severe degenerative spinal disorders, such as ankylosing spondylitis and spondylolisthesis 2,5) .…”

Section: Introductionmentioning

confidence: 99%

A Comparison of Three-dimensional Spine Kinematics during Multidirectional Trunk Movement between Elderly Subjects with Degenerative Spine Disease and Healthy Young Adults

Lee

Kim

2013

J Phys Ther Sci

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Abstract.[Purpose] The purpose of this study was to compare the total segmental range of motion (ROM) of the thoracic-lumbar-sacral spine during multidirectional trunk movements between elderly subjects with degenerative spine disease (DSD) and healthy young adults.[Subjects] Twenty-five elderly subjects with DSD and 11 healthy young adults were recruited for this study.[Methods] Subjects performed five trunk movements, including forward flexion (FF), right and left anterior-lateral bending (Rt. and Lt. ALB), and right and left lateral bending (Rt. and Lt. LB).[Results] The total segmental ROM of FF, Rt. and Lt. ALB in the sagittal plane, and Rt. and Lt. ALB in the horizontal plane was significantly different between the groups. [Conclusion] We suggest that the decreased total segmental ROM resulted from degenerative joint structures, particularly facet joints, vertebral bodies, and discs. The present findings add to the evidence in support of a relationship between degenerative changes and threedimensional spine kinematics in the elderly population with DSD.

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Section: Introductionmentioning

confidence: 99%

A Comparison of Three-dimensional Spine Kinematics during Multidirectional Trunk Movement between Elderly Subjects with Degenerative Spine Disease and Healthy Young Adults

Lee

Kim

2013

J Phys Ther Sci

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Use of a permanent magnetic field to inhibit the development of canine osteoarthritis

Rogachefsky

Altman

Markov

et al. 2004

Bioelectromagnetics

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This study was designed to determine the potential of a permanent magnetic field to inhibit the progression of osteoarthritis (OA) in a canine model. The magnetic field was created by 72 domino-sized ceramic magnets with surface field strength of 1100 G (0.11 T). The magnetic field strength at the surface of the mattress was 450-500 G (45-50 mT) and was equally distributed over the mattress surface. Eighteen animals had closed resection of their right stifle anterior cruciate ligament. Their kennel floors were covered in one of three ways: no floor mattress (OA) (N = 6); a floor mattress with domino-sized ceramic pieces placed between two layers of foam (sham control OA-MAT) (N = 6); or a floor mattress with domino-sized ceramic permanent magnets placed between two layers of foam (OA-MAT-MAG) (N = 6). Animals were kept in their cages except for 4 h of exercise each day. The left stifle of six animals served as the normal control. The stifle joints were examined at 12 weeks for synovial effusion, gross anatomic appearance, microscopic anatomic appearance (Mankin score), and metalloproteinase (MMP)-1 and -3. Macroscopically, the OA-MAT-MAG group appeared to have less synovitis, less synovial effusion, less disruption of the cartilage surface, and less cartilage ulceration than did the OA group or the control mattress group. The mean Mankin score for the OA-MAT-MAG group was less than that for the OA group (4.2 +/- 0.8 vs. 6.7 +/- 0.3; P <.05) and the control mattress group (4.2 +/- 0.8 vs. 5.2 +/- 0.8; P >.05), but greater than that for the normal left group (4.2 +/- 0.8 vs. 1.0 +/- 0.4; P <.05). These scores show a trend of improvement for OA-MAT-MAG group but the difference with the sham control OA-MAT group was not statistically significant. In immunohistochemical studies, the OA-MAT-MAG group cartilage was stained less heavily for MMP-1 and MMP-3 than were the OA group cartilage and the control mattress group cartilage, but did not differ significantly in MMP-1 and MMP-3 from the normal left group cartilage. The OA-MAT-MAG group did not differ from the normal left group in MMP-3 as determined by Western blot analysis. The study suggests that OA of the medial femoral condyle developed in a canine model exposed to a magnetic field may be inhibited beyond the benefit provided by mattress. Further studies are needed to delineate more precisely the effect of the magnetic field in reducing the severity of OA.

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Effects of 0.4 T rotating magnetic field exposure on density, strength, calcium and metabolism of rat thigh bones

Zhang

Xue

Zhang

2005

Bioelectromagnetics

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The current study investigated the effects of 0.4 T rotary non-uniform magnetic field (RMF) exposure on bone density in ovariectomized (OVX) rats. Results showed that many bone indexes are significantly elevated after RMF exposure compared to the control OVX group and confirmed mechanistic evidence that strong magnetic field (MF) exposure could effectively increase bone density and might be used to treat osteoporosis. Synergy of daily RMF exposure (30 min a day for 30 days using an 8 Hz rotary 0.4 T MF) with calcium supplement tended to increase the indexes of thigh bone density, energy absorption, maximum load, maximum flexibility, and elastic deformation as compared to those of untreated OVX control group. Results also revealed that the indexes of alkaline phosphatase (ALP), serum phosphate, and serum calcium were higher in rats exposed to RMF with calcium than in the untreated OVX control group. Changes in bone mineral density (BMD) and bone mineral content (BMC) were observed in rats for three months including the first month RMF exposure. Bone density in rats exposed each day for 60 min increased during 1-month exposure and continued to increase during the post-exposure period. Furthermore, bone density and calcium content in rats exposed for 90 min daily decreased initially in the exposure month; however, ratio of increase was well above the control values by the end of the post-exposure period suggesting possible window and delayed effects. The study indicated that RMF exposure to both male and OVX female rats for 120 min a day over 15 day period should effectively promote increase of bone calcium contents (BCC) and bone-specific alkaline phosphatase (BAP) in rats thigh bone as well as a corresponding decrease in deoxypyridinoline crosslinks (DPD).

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The normal, healthy low back: some functional parameters

Cited by 8 publications

References 2 publications

A Comparison of Three-dimensional Spine Kinematics during Multidirectional Trunk Movement between Elderly Subjects with Degenerative Spine Disease and Healthy Young Adults

A Comparison of Three-dimensional Spine Kinematics during Multidirectional Trunk Movement between Elderly Subjects with Degenerative Spine Disease and Healthy Young Adults

Use of a permanent magnetic field to inhibit the development of canine osteoarthritis

Effects of 0.4 T rotating magnetic field exposure on density, strength, calcium and metabolism of rat thigh bones

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