Chronic axial compression of the mouse tail segment induces MRI bone marrow edema changes that correlate with increased marrow vasculature and cellularity

bra target=_blank rel=nofollow href=http://www.medworm.com/index.php?rid=3304586cid=c_1_31_ffid=33779url=http://dx.doi.org/10.1002%2Fjor.21103 Chronic axial compression of the mouse tail segment induces MRI bone marrow edema changes that correlate with increased marrow vasculature and cellularity /abrMagnetic resonance imaging (MRI) of bone marrow edema (BME) has been found to be helpful in the diagnosis of back pain attributed to degenerative disk disease (DDD) and spondyloarthropathy (SA), but its interpretation is limited by a lack of knowledge of its nature and natural history. We assessed effects of compressive forces to mouse tail segments of WT and TNF-Tg mice with SA, via contrast enhanced-MRI and histology. Normalized marrow contrast enhancement (NMCE) of uninstrumented WT vertebrae significantly decrease, threefold (p 0.01) from 8 to 12 weeks of age, while the NMCE of TNF-Tg vertebrae remained elevated. Compressive loading (6× body weight) increased NMCE twofold (p 0.02) within 2 weeks in WT tails, which was equal to 6× loaded TNF-Tg tails within 4 weeks. Histology conf… br

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Ergonomic evaluation of masons laying concrete masonry units and autoclaved aerated concrete.

Ergonomic evaluation of masons laying concrete masonry units and autoclaved aerated concrete.
This study evaluated shoulder exposure parameters, low back stress, and worker perceptions in two groups of journey level masons, one using CMU and the other using AAC block. Results indicate that for the left arm AAC masons spent significantly more time than CMU masons in static (38.2% versus 31.1%, respectively), and less time in slow motions (48.2% versus 52.2%, respectively) and faster motions (13.6% versus 16.7%, respectively) (p<0.05). CMU masons had significantly greater shoulder and low back pain (p=0.009) and they held block significantly longer than AAC masons (p<0.001). Low back compressive forces were high for both materials. Masons handling AAC demonstrated less left upper extremity stress but both materials were estimated to be hazardous to the low back. PMID: 19926…

Comparison of trunk stiffness provided by different design characteristics of lumbosacral orthoses

Comparison of trunk stiffness provided by different design characteristics of lumbosacral orthoses
Abstract: Background: Lumbosacral orthoses (LSOs) are class I medical devices that are used in conservative and postoperative management of low back pain. The effectiveness of LSOs depends on their design aimed at enhancing trunk stiffness. Therefore, the purpose of this study was to compare two lumbar supports: extensible (made of neoprene and lycra) and non-extensible (made of polyester and nylon).Methods: Trunk stiffness and damping was estimated from trunk displacement data in response to a quick force release in trunk flexion, extension, and lateral bending. Fourteen male and 6 female subjects performed five trials at each experimental condition: (1) No LSO, (2) extensible LSO, (3) non-extensible LSO, (4) non-extensible LSO with a small rigid front panel, and (5) non-extensible LSO wi…

Musculoskeletal disorders in physically active conscripts: a one-year follow-up study in the Finnish Defence Forces

Musculoskeletal disorders in physically active conscripts: a one-year follow-up study in the Finnish Defence Forces
Conclusions: Preventive measures during military service should be targeted at decreasing low back pain and lower limb overuse injuries, because these inflict the largest burden of MSDs and tend to have a chronic nature. (Source: BMC Musculoskeletal Disorders)

An investigation of the reproducibility of ultrasound measures of abdominal muscle activation in patients with chronic non-specific low back pain

An investigation of the reproducibility of ultrasound measures of abdominal muscle activation in patients with chronic non-specific low back pain
The objectives of this study were to estimate the reproducibility of ultrasound measurements of automatic activation of the lateral abdominal wall muscles using a leg force task in patients with chronic low back pain. Thirty-five participants from an existing randomised, blinded, placebo-controlled trial participated in the study. A reproducibility analysis was undertaken from all patients using data collected at baseline and after treatment. The reproducibility of measurements of thickness, muscle activation (thickness changes) and muscle improvement/deterioration after intervention (differences in thickness changes from single images made before and after treatment) was analysed. The reproducibility of static images (thickness) was excellent (ICC2,1 = 0.97, 95% CI =&…

The Choice of Chairs and the Way You Sit Can Help End Back and Neck Pain

The Choice of Chairs and the Way You Sit Can Help End Back and Neck Pain
Back pain strikes nine out of ten adults but can be helped with the right chairs. Incorrect posture when seated is a major cause of back pain. Some chairs are designed to force correct posture but may be too uncomfortable to use. This article deals with finding the right chair and eliminating one of the major causes of back and neck pain.

Bad Back Forces Amiee Out of Corning - May 26, 2005

Bad Back Forces Amiee Out of Corning - May 26, 2005
The Golf Channel is Golf’s Home Page for live golf scores, news, tournament coverage, instruction, contests, stats, shopping and more.

Bad back forces veteran OL Gray out - Seahawks - The Olympian

Bad back forces veteran OL Gray out - Seahawks - The Olympian
A sore back left Seattle’s Chris Gray unable to practice Sunday, so second-year guard Steve Vallos filled in at center on a reshuffled starting offensive line.

Healing Whiplash Through Chiropractic Methods

Healing Whiplash Through Chiropractic Methods
The term whiplash refers to pain felt in the neck area after the soft tissue of the neck, namely the ligaments, tendons and muscles, has been injured during vehicle accidents, sporting activities, accidental falls and even an assault. Whenever force is applied to the neck, causing it to move beyond its normal range, it could lead to whiplash.