Cervical total disc replacement using a novel compressible prosthesis: Results from a prospective Food and Drug Administration-regulated feasibility study with 24-month follow-up.

Background: Anterior cervical fusion, an established procedure to treat cervical radiculopathy, sacrifices the natural function of the disc, while placing increased stresses on adjacent spinal levels. In contrast, the cervical total disc replacement (cTDR) maintains motion and decreases adjacent-level stresses. The purpose of this study was to investigate the safety and effectiveness of a next-generation cTDR device in patients with symptomatic cervical radiculopathy.

Vertebral augmentation treatment of painful osteoporotic compression fractures with the Kiva VCF Treatment System.

Background: Vertebral compression fractures (VCFs) can cause significant pain and functional impairment, and their cumulative effect can lead to progressive morbidity. This single-arm, prospective feasibility trial, conducted at 4 clinical sites, was undertaken to evaluate the clinical outcomes associated with the use of an innovative vertebral augmentation device, the Kiva VCF Treatment System (Benvenue Medical, Santa Clara, California), in the management of symptomatic VCFs associated with osteoporosis.

Methods: Vertebral augmentation treatment was performed for persistent back pain symptoms in 57 patients (mean age, 71.

Horizontal and vertical movements of host-seeking Ixodes pacificus (Acari: Ixodidae) nymphs in a hardwood forest.

The nymph of the western black-legged tick (Ixodes pacificus) is an important bridging vector of the Lyme disease spirochete (Borrelia burgdorferi) to humans in the far-western United States. The previously unknown dispersal capabilities of this life stage were studied in relation to logs, tree trunks, and adjacent leaf-litter areas in a mixed hardwood forest using mark-release-recapture methods. In two spatially and temporally well-spaced trials involving logs, the estimated mean distances that nymphs dispersed ranged from approximately 0.

Host-seeking behavior of Ixodes pacificus (Acari: Ixodidae) nymphs in relation to environmental parameters in dense-woodland and woodland-grass habitats.

In the far-western United States, the bacteria that cause Lyme disease (Borrelia burgdorferi, Bb) and human granulocytic anaplasmosis (Anaplasma phagocytophilum, Ap) are transmitted by the western black-legged tick (Ixodes pacificus). In a dense woodland, human behaviors involving contact with wood were recently found to pose greater risk for encountering I. pacificus nymphs than behaviors entailing exclusive exposure to leaf litter.

Demineralized bone matrix composite grafting for posterolateral spinal fusion.

In a prospective series, the 24-month fusion status was evaluated radiographically among patients undergoing instrumented posterolateral lumbosacral spinal fusion. Seventy-three patients had a diagnosis of degenerative disk disease or degenerative spondylolisthesis and had supplemental bone grafting with demineralized bone matrix (DBM) putty (Grafton DBM; Osteotech, Eatontown, NJ) enriched with aspirated bone marrow (DBM bone marrow), DBM putty combined with iliac crest autograft (DBM autograft), or autograft. Overall, approximately 63% (12 of 19) of DBM bone marrow, 70% (19 of 27) of DBM autograft, and 67% (18 of 27) of autograft patients were fused at 24 months (P = .

Grafting long bone fractures with demineralized bone matrix putty enriched with bone marrow: pilot findings.

In this pilot study, the preliminary effectiveness of a composite graft consisting of demineralized bone matrix (DBM) putty (Grafton DBM) and aspirated bone marrow was evaluated for treating long bone fractures. Patients were ssigned randomly to treatment with the DBM putty composite (n = 10) or iliac crest autograft (n = 8), and had a minimum of 12 months of radiographic follow-up. Ninety percent of DBM patients (9/10) achieved full bone formation compared to 75% of autograft patients (6/8) (P = .

Reducing the risk of deep wound infection in primary joint arthroplasty with antibiotic bone cement.

Despite significant advances in intraoperative antimicrobial procedures, deep wound infection remains the most serious complication associated with primary, cemented total joint arthroplasty. A systematic review was conducted to evaluate studies of antibiotic bone cement prophylaxis for reducing the risk of deep wound infection. The literature included 22 articles providing estimates of the prophylactic effectiveness of antibiotic cement.

Glycemic characteristics in continuously monitored patients with type 1 and type 2 diabetes: normative values.

Objective: The purpose of this study was to generate normative values for periods of euglycemia as well as for daily patterns of glycemic excursions in patients with type 1 and type 2 diabetes monitored continuously for a maximum period of 21 days and blinded to glucose levels.

Research Design And Methods: This was a multicenter, prospective observational study in which 101 consecutive patients with type 1 (n = 60) or type 2 (n = 41) diabetes underwent blinded continuous glucose monitoring. Serial glucose measurements were divided into periods of euglycemia (70-180 mg/dl), hyperglycemia (>180 mg/dl), and hypoglycemia (<70 mg/dl).

Hybrid therapy with right atrial catheter ablation and previously ineffective antiarrhythmic drugs for the management of atrial fibrillation.

Background: Many patients with paroxysmal atrial fibrillation (AF) become refractory to antiarrhythmic drugs (AADs). Early studies suggested that linear catheter ablation in the right atrium may provide sufficient substrate modification to reestablish therapeutic efficacy of previously ineffective AADs.

Methods: This prospective before-after multicenter trial evaluated the safety and effectiveness of hybrid therapy that included right atrial catheter ablation coupled with a regimen of previously ineffective AADs on AF episode frequency and symptoms in drug refractory patients with paroxysmal AF.

Donor age and gender effects on osteoinductivity of demineralized bone matrix.

Allogeneic demineralized bone matrix (DBM) has been used extensively as a clinical graft material because of its inherent osteoinductive and osteoconductive properties. There is continued debate over the acceptable age range of donors for bone and whether the effectiveness of the tissue as a graft is influenced by gender. Contradictory evidence has been obtained with DBM prepared from both animals and humans.

Results of an intervention to improve lead safety among painting contractors and their employees.

Background: Residential and commercial painters disturb lead paint on older buildings, exposing workers and potentially building occupants. An intervention strategy was evaluated for improving lead safety in these small businesses.

Methods: Twenty-one painting contractors received 32 hr of training, technical assistance, and a safety manual; their employees attended an 8-hr training session.