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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Augmentation of bone mineral acquisition in osteoporotic goat model and in vitro studies by extracorporeal shockwave. / CUHK electronic theses & dissertations collection

January 2006 (has links)
In cell culture, the cellular responses on Day 6 and Day 18, and matrix mineralization (Day 35) of human periosteal cells after stimulated by ESW, LIPUS and ESW+LIPUS treatments were studied. Our results showed that LIPUS only exerted transiently beneficial effects on Day 6, but no effect was observed on Day 18. In contrast, ESW inhibited the differentiation on Day 6, and then exerted a time-delayed stimulation effect on cellular response and matrix mineralization. Data of the ESW+LIPUS showed that it was mainly under ESW effects, but LIPUS might impact the beneficial effect of ESW on Day 18, leading to reduced ALP and matrix mineralization. The potentials of the osteocytes to function as mechanosensors and signal relay were also investigated with untreated periosteal cells that separately received conditioned medium from MLO-Y4 osteocyte-like cells, which received the ESW LIPUS and ESW+LIPUS treatments. The periosteal cells showed stimulated proliferation in the ESW+LIPUS and ESW groups, indicating that the stimulus of ESW was transferred in the conditioned medium. / In conclusion, although our in vivo and in vitro findings did not support our hypothesis of the beneficial effects of combined treatment, but ESW had been shown to improve BMD and bone microarchitecture in osteoporotic bone, by stimulation of osteogenic activities in osseous cells. ESW might potentially be developed as treatment for osteoporosis. Our study also indicated that stimulation of osteogenic activities may be the direct interaction of ESW on osteoblast/periosteal cells, or indirectly through biochemical signals relayed by the osteocytes which acted as mechanosensors. / Osteoporosis is a bone disorder with decreased bone mass and deteriorated microarchitecture, leading to increased fracture risk. By using non-invasive biophysical interventions that stimulate osteogenesis, i.e. extracorporeal shockwave (ESW) and low-intensity pulsed ultrasound (LIPUS), may reduce bone loss effectively. We hypothesized that the combined treatment of ESW and LIPUS might produce synergistic effects on osteoporotic bone. The aim of this study was to investigate the efficacy of using ESW treatment alone and combined treatment of ESW and LIPUS to increase bone mineral acquisition on intact osteoporotic bone in vivo, and to investigate their underlying mechanisms in vitro. / Ten osteoporotic goats were used and divided into ESW and ESW+LIPUS groups (n=5). The ESW group received shockwave at calcaneus, distal radius, and femoral condyle on the left limbs once per month. The ESW+LIPUS group also received ESW treatment monthly and LIPUS for 6 day/week. The opposite limbs served as contralateral control. After nine months, percentage BMD changes, mineral apposition rate, trabecular thickness in treatment sites were found higher than that of controls in both groups. Cumulatively increase of serum bone-specific alkaline phosphatase indicated that the improvements were due to the increased osteogenic activities in bone. Of all parameter, no significant difference was found between the ESW+LIPUS and ESW groups. / by Tam Kam Fai. / "August 2006." / Adviser: Kwok Sui Leung. / Source: Dissertation Abstracts International, Volume: 68-03, Section: B, page: 1550. / Thesis (Ph.D.)--Chinese University of Hong Kong, 2006. / Includes bibliographical references (p. 156-184). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. [Ann Arbor, MI] : ProQuest Information and Learning, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstracts in English and Chinese. / School code: 1307.
2

Densitometric Comparison of Autogenous Cancellous Bone Graft and Extracorporeal Shock Wave Therapy in the Tibial Tuberosity Advancement Procedure in Dogs

Barnes, Katherine Hirose 01 July 2015 (has links)
Objectives: To compare optical values in the osteotomy gap created after a Tibial Tuberosity Advancement (TTA) treated with autogenous cancellous bone graft (ACBG), extracorporeal shock wave therapy (ESWT), a combination of ACBG and ESWT, and absence of both ACBG and ESWT using densitometry. Methods: Dogs presenting for surgical repair of a cranial cruciate ligament rupture were randomly assigned to one of four groups; TTA with ACBG (TTA-G), TTA with ACBG and ESWT (TTA-GS), TTA with ESWT (TTA-S), and TTA with no additional therapy (TTA-O). Mediolateral radiographs at 0, 4 and 8 weeks after surgery were evaluated to compare healing of the osteotomy gap via densitometry. An analysis of variance (ANOVA) statistical analysis was used to compare the densitometric values between groups. Results: At 4 weeks after surgery, a significant difference in osteotomy gap density was noted between TTA-GS (8.4 millimeters of Aluminum equivalent [mmAleq]) and TTA-S (6.1mmAleq), and between TTA-GS (8.4 mmAleq) and TTA-O (6.4 mmAleq). There were no significant differences noted between groups at the 8 week recheck. Clinical Significance: There were no significant differences in the osteotomy gap density at 8 weeks after surgery regardless of the treatment modality used. The combination of ACBG and ESWT may lead to increased density of the osteotomy gap in the first 4 weeks after surgery. Densitometry using an aluminum step wedge is a feasible method for comparison of bone healing after TTA in dogs. / Master of Science
3

Účinky rázové vlny v léčbě tendinopatie Achillovy šlachy / The Effects of Extracorporeal Shock Wave Therapy in Treatment of Achilles Tendinopathy

Katolický, Jakub January 2021 (has links)
Diplomová práce Účinky rázové vlny v léčbě tendinopatie Achillovy šlachy 1 Abstract This thesis focuses on the observation of the effects of low-energetic focused extracorporeal shock wave therapy (ESWT) in the treatment of Achilles tendinopathy. The theoretical part summarizes the current knowledge of anatomical, histological, kinesiological and biomechanical aspects of Achilles tendon (AT), as well as pathological processes, which can be described as Achilles tendinopathy, their differential diagnosis and treatment options. Last but not least, we present up-to-date information on the physical principles and biological effects of ESWT, not only in the treatment of AT diseases. The main goal of our research was to determine the effectiveness of low-energetic focused ESWT in the treatment of Achilles tendinopathy in comparison to the placebo group. The subject of observation was not only changes in clinical manifestations, but also possible changes in the morphology of AT using ultrasonography (USG). Methods: A total of 20 patients with symptomatic Achilles tendinopathy was included in the study, while only 18 of them completed the entire program, and therefore only the results of these patients were evaluated. They were randomly divided into two groups in 1:1 ratio. Group A was treated by ESWT with...
4

Retrográdní studie efektu terapie rázovou vlnou u funkčních poruch muskuloskeletálního systému / Retrograde study of the effect of the shock ware therapy for the functional disorders of the musculosceletal system

Horáková, Kateřina January 2013 (has links)
This thesis assesses the effectiveness of shock wave therapy for dysfunctional disorders of the musculoskeletal system. While we are well aware of the physical principles and history of shock wave generators, opinion differs on the treatment effectiveness mechanisms. The theoretical part of this work explains the effects of shock waves on various types of tissue, the differentiation of the cells, and the analgetic effect of therapy. It summarizes the indications, side effects and contraindications of shock wave therapy. The research part of this thesis deals with the effectiveness of shock wave therapy at the Department of Rehabilitation and Sports Medicine at the Motol University Hospital, which specialises in various musculoskeletal disorders. This thesis evaluates the correlation between the effectiveness of shock wave therapy and length of time the patient has experienced difficulties before undergoing treatment. This thesis also reviews whether the number of treatment applications has the capability to influence the outcome of therapy. The study is controlled by a control group of 22 patients. The total effectiveness of shock wave therapy is p = 1,12*10-10 . The shock wave therapy effectiveness of patients with heel spur is p = 0,00176. The shock wave therapy effectiveness of patients with...
5

Lateral epikondylalgia : evidens för stötvågsbehandling för smärtreducering och förbättrad handgreppsstyrka

Wulff, Monica January 2013 (has links)
Syfte Syftet med föreliggande studie var att försöka klargöra om stötvågsbehandling har någon effekt på smärta och handgreppstyrka hos patienter med lateral epikondylalgia. Frågeställningar 1. Har stötvågsbehandling någon effekt på smärta hos patienter med lateral epikondylalgia, i så fall vilken? 2. Har stötvågsbehandling någon effekt på handgreppsstyrka hos patienter med lateral epikondylalgia, i så fall vilken? Metod Sökning av litteratur utfördes i PubMed, Cochrane, Cinahl och PEDro. Detta resulterade i 14 artiklar, som granskades och bedömdes enligt PEDro Scale. Poängbedömningen utifrån PEDro Scale omsattes till Statens Beredning för medicinsk Utrednings (SBU) mall för bevisvärde. Utifrån artiklarnas sammantagna bevisvärde bestämdes evidensnivån enligt SBU:s fyra nivåer. Resultat Enligt GRADE-systemet förelåg det ett starkt vetenskapligt belägg för att stötvågsbehandling har en smärtlindrande effekt vid lateral epikondylalgia. Studier av likartad vetenskaplig kvalitet påvisar motsägande resultat avseende om stötvågsbehandling är bättre än placebo, kortison eller tenotomi. Detta innebär att det vetenskapliga underlaget är otillräckligt och att mer forskning behövs. Enligt GRADE-systemet förelåg det ett starkt vetenskapligt belägg för att stötvågsbehandling leder till förbättrad handgreppsstyrka vid lateral epikondylalgia. Vidare förelåg det ett starkt vetenskapligt belägg för att stötvågsbehandling inte är bättre än någon annan behandling gällande ökning av handgreppsstyrka vid lateral epikondylalgia. Slutsats Stötvågsbehandling har en smärtlindrande effekt hos patienter med lateral epikondylalgia. Det finns dock ingen evidens för att stötvågsbehandling är bättre ur smärthänseende än någon annan behandling såsom placebo, kortison eller tenotomi. Stötvågsbehandling leder till förbättrad handgreppsstyrka men är inte bättre än placebo, kortison eller tenotomi på att öka handgreppsstyrkan hos patienter med lateral epikondylalgia. / Aim The aim of the present study was to try to find out whether shock wave therapy has any effect on pain and grip strength in patients with lateral epicondylitis. Objectives 1. Does shock wave therapy reduce pain in patients with lateral epicondylitis? 2. Does shock wave therapy improve grip strength in patients with lateral epicondylitis? Method A literature review was performed in the databases PubMed, Cochrane, Cinahl and PEDro. Fourteen articles were found and critically reviewed. These articles were scored according to the PEDro scale and the scores were translated into a scale of evidence by the Statens Beredning för medicinsk Utredning (SBU) and the level of evidence was determined based on the four different grades presented by the SBU. Results According to the GRADE-system there was a strong scientific evidence for a reduction of pain using shock wave therapy in patients with lateral epicondylitis. Contradictory results whether shock wave therapy was better than placebo, corticosteoroid injection or tenotomy have been reported in studies of similar scientific quality. This means that more research is needed in this field. According to the GRADE-system there was a strong scientific evidence for an improvement of grip strength using shock wave therapy. Furthermore, there was a strong scientific evidence for that shock wave is not better than any other therapy in terms of improving grip strength in patients with lateral epicondylitis. Conclusion Shock wave therapy reduces pain in patients with lateral epicondylitis. There is, however, no evidence for shock wave therapy to be superior to any other treatment such as placebo, corticosteoroid injection or tenotomy. Shock wave therapy improves grip strenght but is not better than placebo, corticoidsteroid injection or tenotomy in increasing grip strength in patients with lateral epicondylitis.
6

Terapia por ondas de choque eletrohidráulicas aumenta a atividade de ERK-1/2 e Akt em tíbias íntegras de ratos por 21 dias após estímulo inicial / Eletrohydraulic extracorporeal shock wave therapy increases ERK-1/2 and Akt activities in rat intact tibia and fibula for 21 days following primary stimulation

Faria, Lídia Dornelas de, 1984- 28 August 2018 (has links)
Orientador: William Dias Belangero / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas / Made available in DSpace on 2018-08-28T23:43:39Z (GMT). No. of bitstreams: 1 Faria_LidiaDornelasde_M.pdf: 3066212 bytes, checksum: 6cb5506682740e2fcb2de4b1694998a3 (MD5) Previous issue date: 2015 / Resumo: A Terapia por ondas de choque (TOC) é uma alternativa não invasiva utilizada como método de indução a formação óssea que consiste em pulsos sonoros de alta energia transmitidas de modo focal a um tecido específico. Artigos demonstram aumento de vascularização, que ativação de proteínas como BMP (bone morphogenic protein) e Erk (extracellular signal-regulated kinase) induzindo diferenciação osteogênica após sua utilização no tecido ósseo. O presente estudo visou avaliar os níveis das proteínas Erk e Akt (akutely transforming), envolvidas na cascata protéica responsiva a deformação celular gerada por estímulo mecânico e consequente transformação em estímulo bioquímico induzindo a osteogênese. Os animais selecionados para o estudo foram anestesiados e divididos em dois diferentes grupos, onde no dia 1, o primeiro grupo foi submetido a TOC em sessão única de 500 impulsos gerados por aparelho eletrohidráulico a 0,12mJ/mm²na tíbia intacta e o segundo não recebeu TOC. Na sequência, os animais foram divididos em 3 subgrupos para cada tempo de segmento de 7, 14 e 21 dias A determinação dos níveis das proteínas propostas foi realizada por meio de immunoblotting. A fosforilação das proteínas Erk e Akt dos tecidos ósseos das tíbias extraídas dos ratos aumentou nos grupos submetidos a TOC após 7, 14 e se manteve elevado até o 21° dia quando comparado ao controle / Abstract: Extracorporeal shock wave therapy (ESWT) is a non-invasive alternative used as a method for inducing bone formation that consists of high-energy acoustic pulses transmitted in a focal way to a specific tissue. Studies show increase in vascularization which activate proteins such as BMP and Erk inducing osteogenic differentiation after its use in the bone tissue. The present study aimed at evaluating the levels of Erk and AKT proteins involved in the protein cascade responsive to cell deformation in biochemical stimulus inducing osteogenesis. The animals selected for the study were under anesthesia and divided in two different groups where on day 1 the first group was submitted to ESWT in one 500 pulse-session generated by an electrohydraulic device at 0,12mJ/mm² in intact tibia and fibula and the second did not receive ESWT. Then the animals were divided into 3 sub-groups, one for each segment times of 7, 14 and 21 days. Immunoblotting analysis was performed to determine the levels of the proposed proteins. The Erk and Akt protein phosphorylation of the bone tissues of extracted tibia from the animals increased in the groups submitted to ESWT and kept elevated until the 21st day when compared to the control group / Mestrado / Fisiopatologia Cirúrgica / Mestra em Ciências

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