GAIT ANALYSIS NORMAL AND PATHOLOGICAL FUNCTION SECOND EDITION PDF
Request PDF on ResearchGate | Gait Analysis: Normal and Pathological Function | In this second edition of Gait Analysis, Jacquelin Perry and Judith Burnfield. Gait Analysis: Normal and Pathological Function. Book · February with 1, Reads. Publisher: 2nd Edition. Publisher: Publisher: Slack. Mar 25, Pdf Online Gait Analysis: Normal and Pathological Function - Online - By Biomedical Sensors and Instruments, Second Edition by Togawa.
|Language:||English, Spanish, Japanese|
|ePub File Size:||15.68 MB|
|PDF File Size:||18.31 MB|
|Distribution:||Free* [*Regsitration Required]|
The multidirectional mobility of the hip makes this joint sensitive to dys- function in all 3 planes. A further complexity to assessing the effects of hip pathology is its . PURPOSE: The aim of this second edition is to analyze gait further by bringing the relevant data up to date and covering current research, more. This is a book that was commissioned and published in India. The editor, himself an internationally respected hand surgeon has assembled 48 chapters from.
These involve the development of a novel immune system lacking pathogenic immune cells [ 30 ]. During the advances of the AHSCT procedure, different combinations of immunosuppressive conditioning regimens have been proposed and studied in MS in order to avoid transplant-related toxicities.
A basic discrimination classifies conditioning regimens into high, intermediate, and low intensity regimens. High intensity regimens include total body irradiation, cyclophosphamide and antithymocyte globulin ATG , busulfan or cyclophosphamide, and ATG.
In some studies, additional ex vivo lymphocyte depletion has been performed using the CD34 cell selection method. Low intensity regimens include cyclophosphamide alone, melphalan alone, or fludarabine-based regimens, while intermediate intensity regimens, such as the BEAM regimen, have been widely incorporated mimicking the current practice in lymphomas [ 31 , 32 ].
Nevertheless, it should be noted that intermediate intensity regimens raise major concerns of long-term toxicity and fertility issues [ 3 ].
These issues will be discussed in the following paragraphs. The hypothesis that growth factor might cause a flare of the original disease has not been confirmed as a major toxicity event during long-term observation [ 3 ]. Leukapheresis: mobilization of hematopoietic stem cells following administration of cyclophosphamide and granulocyte-colony stimulating factor G-CSF. The autologous graft that is harvested from the peripheral blood by leukapheresis is then cryopreserved.
Conditioning: a cytotoxic high-dose conditioning regimen is administered during hospitalization for AHSCT. Transplantation: the autologous hematopoietic graft is then reinfused transplantation , and supportive care is provided during hospitalization for neutropenia until engraftment.
Engraftment: following engraftment, close outpatient monitoring and prophylactic treatment are necessary. Lastly, it should be noted that transplantation conditions must comply with the international guidelines, which require isolation during hospitalization and intensive prophylactic treatment against infections. Potentially dangerous infections are prevented by the prophylactic use of antibacterial, antiviral, and antifungal treatment for at least 3 months posttransplant. Alternative approaches of outpatient AHSCT have also been recently investigated in MS patients and may be further evaluated in the future [ 33 ].
A major pathophysiological difference between relapsing and progressive forms relates to the type of autoimmune response. Relapsing forms are characterized primarily by adaptive responses, while progressive forms by diffuse innate immune response within the CNS and neurodegenerative mechanisms triggered by uncontrolled chronic neuroinflammation [ 35 ].
Efficacy The most recent systematic reports of efficacy have been provided by two meta-analyses of 15 and 18 studies, respectively [ 25 , 36 ]. Patients with RRMS presented a significantly lower 2-year progression rate [ 25 ]. Another important outcome reported in the recent studies is the NEDA no evidence of disease activity status i. For a life-long disorder like MS, the long-term outcomes of any therapeutic intervention are particularly relevant.
A recent multicenter study explored this issue in patients from 13 countries treated with AHSCT between and and followed up for an average of 6.
Neurological progression after AHSCT was associated with older age, progressive instead of relapsing MS, and more than 2 previous disease-modifying therapies [ 37 ]. Another important aspect of efficacy is reflected in improvements of quality of life. AHSCT resulted in improved quality of life in two studies [ 20 , 38 ].
Gait Analysis: Normal and Pathological Function. Jacquelin Perry
Improvements in quality of life following AHSCT may be also associated with improvements in fatigue, since a recent study has provided relevant evidence in aggressive MS [ 39 ]. To be more specific, Hartung and colleagues calculated the annual cost of MS treatment with immunosuppressive or immunomodulatory drugs at approximately 50,—70, USD in [ 40 ].
This cost accrues indefinitely in contrast to the cost of AHSCT which is a one-time treatment not expected to cause direct costs posttransplant. Nevertheless, AHSCT confers acute and late toxicities that are rather limited compared to allogeneic transplantation and are similar to chemotherapy-induced toxicities.
Acute toxicities such as alopecia, infections, mucositis, and gastrointestinal symptoms are addressed by proper supportive care [ 43 ]. Late toxicities are of multisystem nature, involving the endocrine system, autoimmune phenomena, and infertility. Proper counseling and monitoring by both transplanters and neurologists are required according to current guidelines [ 44 ].
Upcoming multicenter randomized controlled studies are expected to provide further high quality data on the role of AHSCT in MS patients [ 45 ]. Other Factors Despite encouraging results in efficacy, safety, toxicity, and economic cost, several factors not associated with scientific validity limit the broad application of AHSCT.
These include both factors associated with transplant units that may have limited resources to treat these patients, treating neurologists that may not be familiar with this procedure, and healthcare reimbursement depending on the healthcare system [ 45 ].
Overcoming these obstacles is needed to offer AHSCT in selected patients according to state-of-the-art treatment recommendations. Of note, particular forms of pediatric MS severely affect brain development. In this context, the approach of AHSCT seems appealing in children with MS based on the rationale of a one-time treatment that promises elimination of inflammation.
These conditions are expected to allow normal brain development avoiding long-term exposure to immunomodulatory or immunosuppressive agents and improvement of quality of life for a long period of time.
Low intensity conditioning regimens might be preferable in the pediatric setting aiming to limit long-term toxic effects of cytotoxic agents. In this context, increased awareness from transplanters and neurologists is warranted to carefully monitor late effects of transplantation according to current recommendations [ 44 , 46 ]. This multicenter study reported outcomes in 22 patients. Mobilization of peripheral blood stem cells was achieved with the standard method of cyclophosphamide and growth factor administration.
Regarding safety, only one patient experienced unexpected serious adverse events. Several novel treatment options as well as high-efficacy therapeutic drugs have emerged including glatiramer acetate, mitoxantrone, natalizumab, fingolimod, teriflunomide, dimethyl fumarate, alemtuzumab, daclizumab, cladribine, and ocrelizumab [ 51 , 52 ]. In general, the majority of these immunomodulatory or immunosuppressive drugs need to be administered continuously in order to control disease activity.
Importantly, despite the expanding therapeutic options, a portion of patients responds insufficiently, whereas others present contraindications or complications to immunomodulatory or immunosuppressive drugs requiring an alternative therapeutic approach [ 53 ].
Therefore, updated recommendations regarding the role of AHSCT in the therapeutic algorithm of MS are required in the era of novel agents.
Existing guidelines place AHSCT as rescue treatment after failure of second-line treatment along with alemtuzumab and other off-line treatments ocrelizumab, rituximab [ 55 ].
In addition, the Belgian group most recently recommended AHSCT in aggressive RRMS patients after treatment failure of at least one highly effective treatment 2 courses of alemtuzumab or at least 6 months of treatment with mitoxantrone, cyclophosphamide, natalizumab, rituximab, and ocrelizumab. The same group recommended AHSCT in progressive patients with active disease only in case of ocrelizumab treatment failure, since ocrelizumab is indicated for primary progressive patients [ 56 ].
The critical question whether AHSCT might be used in combination with immunomodulatory or immunosuppressive drugs cannot be answered on the basis of existing data. The only available evidence stems from a recent study in patients that underwent AHSCT following discontinuation of natalizumab.
A minimum period of 6 months from the last natalizumab infusion was adopted with the use of a bridging therapy cyclophosphamide or corticosteroid methylprednisolone.
AHSCT was performed with acceptable toxicity with no fatalities or serious complications such as progressive multifocal leukoencephalopathy PML. These are classified into two major categories: endogenous cell therapy including mesenchymal stem cells MSCs and cell-based remyelinating therapy including oligodendrocyte progenitor cells OPCs and induced pluripotent stem cells iPSCs [ 59 ].
Figure 2 summarizes cell-based therapies in MS. Except for endogenous problems that need to be addressed in further studies, ethical considerations represent an important aspect of research in cell-based therapies.
Studies with cell-based therapies need to strictly comply with recent guidelines for human embryonic stem cell research [ 60 ]. Figure 2: A schematic representation of cell-based therapies in multiple sclerosis. Endogenous Cell Therapy Although early studies have suggested that MSCs differentiate into both neurons and oligodendrocytes [ 61 ], potential repair-promoting actions of MSCs in the CNS are based rather on their paracrine mechanisms of action than the phenomenon of transdifferentiation.
Therefore, the potential use of MSCs in MS in the context of endogenous cell therapy would be through amelioration of different pathological processes that contribute to tissue damage [ 62 ].
In line with this hypothesis, MSCs from MS patients have demonstrated similar growth in culture, differentiation potential, surface antigen expression, and immunomodulatory properties with MSCs from non-MS individuals [ 63 — 65 ].
Nevertheless, other studies have shown functional differences of MSCs [ 66 , 67 ]. Clinical reports of applications of cell-based therapies in patients with different underlying diseases have shown serious clinical complications including transient aseptic meningitis [ 68 ], acute disseminated encephalomyelitis [ 69 ], glioproliferative spinal cord tumor [ 70 ], and severe visual loss [ 71 ].
A number of additional issues remain to be resolved including the appropriate cell dose, number of infusions, and type of cell preparation, as well as cryopreservation, donor variance, culture expansion, immunogenicity, epigenetic reprogramming, and senescence [ 72 , 73 ].
Therefore, further clinical trials are warranted in this experimental field. Larger phase 2 studies of bone marrow-derived cells [ 74 , 75 ] and culture-expanded MSCs [ 76 ] are ongoing. Second, OPCs are retrieved in limited numbers from fetal tissue and have limited proliferative capacity when cultured.
Alternative approaches to overcome this problem would require the use of allogeneic cells in immunosuppressed recipients or the generation of OPCs from autologous iPSCs. Another alternative approach would be to find agents acting on intrinsic OPCs to stimulate remyelination. Third, OPCs are already present in chronic lesions of MS, indicating that remyelination is rather limited by other factors, such as their interaction with the axons and the microenvironment [ 78 ].
Therefore, proof-of-principle studies are needed in MS patients to provide safety and feasibility data on remyelination therapy. Lastly, iPSCs have the potential to differentiate to OPCs and could therefore represent a suitable source of autologous cell-based therapy. Recent studies of iPSC-derived neural precursors have observed neuroprotective but not remyelinating properties [ 79 ].
In addition, preclinical models have shown encouraging results in MS [ 80 , 81 ]. However, earlier applications of iPSCs have raised concerns on malignant transformation or immune rejection [ 82 , 83 ]. Over the years, safety and toxicity of AHSCT have improved along with improved efficacy in selected patient populations.
Although no direct comparisons are available, these results compare favorably with conventional treatments paving the way for the use of AHSCT in carefully selected MS patients even in the era of multiple novel treatment options. However, there is no definitive evidence for efficacy in MS, and novel cell-based therapies should be considered only in the context of rigorous clinical trials [ 59 ]. Therefore, future studies need to further explore combinations of cell-based therapy with conventional treatment in an effort to improve outcomes of MS patients.
Conflicts of Interest There are no conflicts of interest to report. Acknowledgments E. References I. Spyridonidis and I.
Stem Cells International
Sakellari, Eds. View at Google Scholar A. Fassas, A. Anagnostopoulos, A. Kazis et al. Snowden, R. Saccardi, M. Allez et al. Openshaw, B.
Lund, A. Kashyap et al. Burt, B. Cohen, E. Russell et al.
Kozak, E. Havrdova, and J. View at Google Scholar R. Nash, J. Bowen, P. McSweeney et al. Saiz, Y. Blanco, E. Carreras et al. Saccardi, G. Mancardi, A. Solari et al. Samijn, P.
Mondria et al. Xu, B. Ji, L. Su, H. Dong, X. Sun, and C. Fassas, J. Passweg, A. Anagnostopoulos et al. Fassas, V. Kimiskidis, I. Sakellari et al. Saccardi, T. Kozak, C. Bocelli-Tyndall et al. Fagius, J. Lundgren, and G. Burt, Y. Loh, B. Cohen et al. Halperin, G. Levine, S. Burt, R. Balabanov, X. Han et al. Vuolo, F.
Gualandi et al. Nash, G. Hutton, M. Normal and Pathological Function ebook download. Using a generalized inverse dynamics analysis approach, we identify the key independent variables needed to predict knee quasi-stiffness during walking, including gait speed, knee excursion, and subject height and weight.
Understanding joint stiffness is critical for evaluating gait function and designing devices such as prostheses and orthoses intended to emulate biological properties of human legs. Perry published more than scientific papers in her career and, in , she wrote Gait Analysis: Normal and Pathological Function, which became the definitive work in the field. Normative data of vertical ground reaction forces during landing from a jump. In addition to objective measures, a gait analysis should also be included.
Philadelphia, PA: Lippincott Williams and Wilkins, Then, based Perry J Gait analysis: Free ebook Gait Analysis:Shave R, Oxborough D. Vasconcelos, and M. The aim of this second edition is to analyze gait further by bringing the relevant data up to date and covering current research, more sophisticated methods, and the latest equipment available. Walsh, N. AHSCT was performed with acceptable toxicity with no fatalities or serious complications such as progressive multifocal leukoencephalopathy PML.
Lippincott Williams and Wilkins, Suitable candidates were also considered patients with malignant Marburg type MS and severe disability during the previous year.
Typical Crossing regions are identified in Figure 2.
- SWAMI VIVEKANANDA THOUGHTS IN ENGLISH PDF
- THE CONTRACT BY MELANIE MORELAND PDF
- MERIAM DYNAMICS 6TH EDITION PDF
- ANNA AND THE KING OF SIAM EBOOK
- HANDLE WITH CARE JODI PICOULT PDF
- ABUNDANCE BOOK JOHN RANDOLPH PRICE
- EMPIRE ARMY BOOK 8TH EDITION PDF
- RUBY ON RAILS TUTORIAL 2ND EDITION PDF
- LORENTZ TRANSFORMATION PDF