Search results for "Surgery."
showing 10 items of 15774 documents
Effects of pregnancy on lumbar motion patterns and muscle responses.
2018
The kinematics of the lumbar region and the activation patterns of the erector spinae muscle have been associated with the genesis of low back pain, which is one of the most common complications associated with pregnancy. Despite the high prevalence of pregnancy-related low back pain, the biomechanical adaptations of the lumbar region during pregnancy remain unknown.This study analyzes lumbar spine motion and the activation pattern of the lumbar erector spinae muscle in healthy pregnant women.A case-control study.The study involved 34 nulliparous women (control group) and 34 pregnant women in the third trimester (week 36 ± 1).We recorded the parameters of angular displacement of the lumbar …
Arthrose und Osteoporose - Wirklich eine inverse Relation?
2005
Objective Increasing bone mineral density (BMD) has been found in several studies in patients with osteoarthritis (OA). Therefore, the simultaneous occurrence of osteoporosis (OP) and OA is denied by many clinicians. Because of our clinical impression, however, we suggest that we have to consider a common occurrence. In the present study we have examined the relationship between osteoathritis of the knee or the hip and osteoporosis. Method The BMD of the lumbar spine and the proximal femur of 117 OA patients (82 postmenopausal female patients aged 50-83 and 35 male patients aged 36-86 years) who subsequently required hip or knee replacements, but were otherwise healthy, was measured by dual…
Both Resistance and Agility Training Increase Cortical Bone Density in 75- to 85-Year-Old Women With Low Bone Mass
2004
A randomized, controlled, single-blinded 25-wk prospective study was conducted to compare the effects of group-based resistance and agility training on bone, as measured by both dual-energy X-ray absorptiometry (DXA) and peripheral quantitative computed tomography (pQCT), in older women with low bone mass. Ninety-eight community-dwelling women aged 75-85 yr were randomized to one of three experimental groups: resistance training (n = 32), agility training (n = 34), or stretching (sham exercise) (n = 32). Total hip, femoral neck, and trochanteric bone mineral density (BMD) were measured by DXA. Peripheral QCT measurements were performed at the tibia and radius. The pQCT outcome measures at t…
Effect of patella resurfacing on functional outcome and revision rate in primary total knee arthroplasty (Review).
2021
Anterior knee pain, as well as patellofemoral disorders, after total knee arthroplasty are important reasons for revision in total knee arthroplasty. Current prosthesis designs include patellar components for patella replacement, and together with improved rational design of the prosthesis and advancement in knee alignment these appear to reduce the incidence of anterior knee pain following total knee replacement, even if the etiology of anterior knee pain remains unclear. However, new complications related to patella resurfacing emerge with this approach. At present, there are three strategies involving patella replacement in total knee arthroplasty: There are surgeons who always replace t…
Repair of osteochondral defects in articular weightbearing areas in the rabbit's knee. The use of autologous osteochondral and meniscal grafts.
1987
Repair of osteochondral defects in articular weightbearing areas presents its own particular problems because of the low potential of hyaline cartilage for regeneration. Our first group of experiments on the knee of the rabbit confirms that the new regenerated cartilage comes from bone marrow which degenerates before developing into true hyaline cartilage. The second group of experiments shows that autologous grafts from the non-weightbearing articular area suitable for the repair of defects in weightbearing areas. In an third group, autologous meniscal fibrocartilage was used as a graft for the repair of osteochondral defects.
Dystroglycan regulates structure, proliferation and differentiation of neuroepithelial cells in the developing vertebrate CNS.
2007
AbstractIn the developing CNS α- and β-dystroglycan are highly concentrated in the endfeet of radial neuroepithelial cells at the contact site to the basal lamina. We show that injection of anti-dystroglycan Fab fragments, knockdown of dystroglycan using RNAi, and overexpression of a dominant-negative dystroglycan protein by microelectroporation in neuroepithelial cells of the chick retina and optic tectum in vivo leads to the loss of their radial morphology, to hyperproliferation, to an increased number of postmitotic neurons, and to an altered distribution of several basally concentrated proteins. Moreover, these treatments also altered the oriented growth of axons from retinal ganglion c…
Primary total hip arthroplasty with fourth-generation ceramic bearings: Clinical and survival results with a minimum follow-up of 5 years.
2019
Abstract Objective To evaluate the clinical results and survival of primary hip prosthesis with ceramic delta bearings (C-C) with a minimum follow-up of 5 years. Material and method A total of 205 primary hip arthroplasties performed between 2008 and 2012 were studied. The clinical results, pre-surgical and at 5 years of follow-up were evaluated using the Harris Hip Score (HHS), the Short Form-36 (SF-36), the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and the visual analogue scale (VAS). The position of the prosthetic components, periprosthetic osteolysis, loosening of the prosthetic components and ruptures of the ceramic components were studied radiologically. …
Infliximab, azathioprine or combination therapy in the treatment of active Crohn's disease.
2010
The treatment of moderate-to-severe steroid-dependent Crohn's disease has been a challenging issue for the gastroenterologist. Until to 10 years ago, immunosuppressors, mainly azathioprine or 6-mercaptopurine, were the best possible treatments available, and remission rates ranged from 30 to 60% according to the results of open studies and controlled trials. Recently, infliximab has been shown to be effective in steroid-dependent patients and, combined with azathioprine, it has been shown to increase 1-year remission rates. A recent large randomized controlled trial comparing infliximab, azathioprine and infliximab plus azathioprine demonstrated that the combination of infliximab plus azath…
In vitro comparison of the efficacy of two fractured implant-prosthesis screw extraction methods: Conventional versus mechanical.
2019
Abstract Statement of problem Implant-supported prostheses may be subject to esthetic, biological, or mechanical complications. Protocols for dealing with these mechanical problems are sparse. Purpose The purpose of this in vitro study was to compare the efficacy of a mechanical system for extracting fractured implant-prosthesis screws with the conventional method. Material and methods A total of 60 screws were divided into 2 groups according to their morphology (flat screws with a smooth shaft and threaded apical area and screws with a completely threaded body) and subjected to fatiguing and static load testing until fracture. The specimens were assigned to 3 operators with varying levels …
Posterior perilunate carpal dislocation associated with a multifragmentary distal radius fracture.
2009
Summary Dorsal perilunate wrist dislocations are rare. Associated carpal bones or radial styloid process fractures can occur and be included in the current classifications. The authors report an unusual association of dorsal perilunate wrist dislocation with a multifragmentary distal radius fracture. Such traumatic entity has never been previously described. Poor functional outcome may justify the inclusion of associated complex forearm bone fractures in wrist dislocation classifications.