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Search Results: 1 - 10 of 2824 matches for " joint arthrometry. "
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Concordancia inter-observador em testes de avalia??o proprioceptiva do joelho por goniometria
Carvalho, Alberito Rodrigo de;Rahn, Márcio Edyr;Diedrichs, Maiara;Lopes, Andréia Coleto;Gregol, Franciele;Grochoski, Renata;Pozzer, Leonardo Mascarello;Machado, Maurício Ant?nio;
Fisioterapia e Pesquisa , 2010, DOI: 10.1590/S1809-29502010000100002
Abstract: the purpose here was to determine inter-rater agreement in two tests that assess knee proprioception by goniometry, in a sample of 13 female university students (aged 23.8±6.4 years). proprioceptive accuracy was measured by means of the passive movement threshold detection test (t1), where leg is passively moved to target angle, and the sense of joint position test (t2), in which active movement to (previously passively reached) target angle is required. target angles were randomly selected; measurements were taken simultaneously by two (blinded) examiners at two identical goniometers placed at knee medial and lateral sides. when participants reported reaching the target angle, both evaluators recorded angle values actually reached. the difference (in absolute numbers) between target and reached angles was considered the"error value", which reflects proprioceptive acuity. inter-rater agreement was determined by kappa agreement test; kappa values found were 0.55 at t1 and 0.58 at t2, pointing to moderate agreement. since inter-rate agreement was moderate at both tests, it may be said that goniometry is of limited use for assessing knee proprioception.
Mensura??o da amplitude de movimento cervical em crian?as respiradoras orais
Neiva, PD;Kirkwood, RN;
Brazilian Journal of Physical Therapy , 2007, DOI: 10.1590/S1413-35552007000500005
Abstract: introduction: by clinical definition, mouth breathers use the mouth as their main air pathway during breathing. this results in modifications to tongue and head positioning and may have an influence on craniofacial mechanics during development. bringing the head forward is also common among mouth breathers and may lead to misalignments in adjacent segments of the human body. objective: to evaluate neck (cervical) range of motion (rom) among mouth-breathing children and compare this with a group of nose-breathing children. method: ten mouth-breathing children of both sexes aged 6.90 ± 1.37 years and ten nose-breathing children aged 7.70 ± 1.42 years participated in this study. the rom for neck flexion, extension and protrusion of the head were evaluated. student's t test for independent samples was used for the statistical analysis, considering p< 0.05 as the statistical significance level. results: the mouth-breathing children had a significantly smaller rom for neck extension (59.0o ± 10.79o), compared with the nose-breathing group (72.9o ± 8.82o ) (p= 0.001). the rom for flexion and protrusion was not statistically different between groups (59.0o ± 10.79o). conclusion: the mouth-breathing children presented smaller neck extension rom than the nose-breathing children did, but for protrusion and flexion rom there was no difference between the groups.
Analysis of the shoulder joint mobility in overhead sports before and after experimental treatment
Ka?anski Ivana,Proti?-Gava Branka,Soldatovi? Sr?an
Medicinski Pregled , 2011, DOI: 10.2298/mpns1112539k
Abstract: Introduction. ”Overhead” sports, characterized by predominant movements of the hands above the head, are associated with very dynamic, often acyclic movements and require strong muscles of humeroscapular regions with high mobility of the shoulder joint as well as flexibility and ability to relax these muscles. This study was aimed at analyzing the shoulder joint mobility before and after conducting kinesiology treatment for a period of 6 months. The research included two complex exercises. Material and methods. The study included 100 ”overhead” sports male athletes, who were randomly divided into the experimental and control group, aged 14 to 18 years. The range of motion was measured in degrees by goniometer. We calculated the central and depression parameter. Results. There was a statistically significant difference in flexion, extension, abduction, adduction, external and internal rotation at the final measure in favor of the experimental group at the level of significance p<0.001, and some positive effects of the applied exercises were observed. Discussion. Kinesitherapy had positive effects on the elasticity of the connective tissue capsule, ligaments and tendons. Changes in the shoulder area of the ”overhead” sports athletes can be reduced to the same extent and at the same time by stretching and strength exercises. Conclusion. The authors of this paper have given their modest contribution by suggesting a more appropriate planning of training and performance of players at training and matches. This paper tries to emphasize the importance of proper incorporation of the corrective exercises in training.
Classification of Knee Joint Vibration Signals Using Bivariate Feature Distribution Estimation and Maximal Posterior Probability Decision Criterion
Yunfeng Wu,Suxian Cai,Shanshan Yang,Fang Zheng,Ning Xiang
Entropy , 2013, DOI: 10.3390/e15041375
Abstract: Analysis of knee joint vibration or vibroarthrographic (VAG) signals using signal processing and machine learning algorithms possesses high potential for the noninvasive detection of articular cartilage degeneration, which may reduce unnecessary exploratory surgery. Feature representation of knee joint VAG signals helps characterize the pathological condition of degenerative articular cartilages in the knee. This paper used the kernel-based probability density estimation method to model the distributions of the VAG signals recorded from healthy subjects and patients with knee joint disorders. The estimated densities of the VAG signals showed explicit distributions of the normal and abnormal signal groups, along with the corresponding contours in the bivariate feature space. The signal classifications were performed by using the Fisher’s linear discriminant analysis, support vector machine with polynomial kernels, and the maximal posterior probability decision criterion. The maximal posterior probability decision criterion was able to provide the total classification accuracy of 86.67% and the area (Az) of 0.9096 under the receiver operating characteristics curve, which were superior to the results obtained by either the Fisher’s linear discriminant analysis (accuracy: 81.33%, Az: 0.8564) or the support vector machine with polynomial kernels (accuracy: 81.33%, Az: 0.8533). Such results demonstrated the merits of the bivariate feature distribution estimation and the superiority of the maximal posterior probability decision criterion for analysis of knee joint VAG signals.
Estudo comparativo do arco de movimento da coluna lombar em indivíduos praticantes e n?o praticantes de esporte
Chertman, Carla;Santos, Humberto Maldonado Campoy dos;Pires, Leonardo;Wajchenberg, Marcelo;Martins, Delio Eulálio;Puertas, Eduardo Barros;
Revista Brasileira de Ortopedia , 2010, DOI: 10.1590/S0102-36162010000400008
Abstract: objetive: to compare the amplitude of trunk flexion and extension through goniometry in athletes and non-athletes, relating these data to popliteal angle and ischiotibial tests. methods: the amplitude of trunk flexibility and extension was evaluated in 50 individuals who practiced sports on a regular basis and 50 non-athletes who did not report painful symptomatology nor any symptom that could affect test performance. the measurements were made consecutively by two independent examiners by means of goniometry. the trunk flexibility and extension results were correlated to the popliteal angle and ischiotibial test, and the statistical correlation between them was analyzed. results: the average values obtained were 130.7 (101.9) for flexion and 40.2 (36.4) for extension. a significant statistical difference between the athletes and non-athletes was found in the following parameters: goniometer in flexion with examiner 1, goniometer in flexion with examiner 2 and ischiotibial test. no significant statistical differences have been found between the groups or in relation to the following parameters: goniometer in extension with examiner 1, goniometer in extension with examiner 2 and popliteal angle. conclusion: individuals who practice sports present higher values in trunk flexion than non-athletes. the use of goniometry to measure trunk amplitude showed variable measurements between examiners.
Confiabilidade inter e intraexaminadores nas mensura??es angulares por fotogrametria digital e goniometria
Santos, Jean Douglas Moura dos;Oliveira, Marco Antonio de;Silveira, Nelson José Freitas da;Carvalho, Sérgio de Souza;Oliveira, Adeno Gon?alves;
Fisioterapia em Movimento , 2011, DOI: 10.1590/S0103-51502011000300003
Abstract: introduction: the use of photogrammetry in support of goniometry or vice versa in clinical practice still requires consistent reasoning. objectives: the objectives of this study were to verify the inter and intra-tester reliability evaluators in the quantification of angular measurements obtained from the photogrammetry and goniometry and determine the reliability parallel between these two different assessment tools. materials and methods: 26 volunteers and 4 examiners were used in the study. data collection was performed in 04 sequential steps: demarcation of anatomical reference points, measurement and recording of goniometric values, image capture volunteer with the markers attached on the body and evaluation of photographic registration in the program imagej. results: the goniometer is a reliable instrument in most of the evidence, but the reliability of the measurements depends mainly on the standardization of procedures. methodological considerations regarding the establishment of reliability and standardization of the placement of markers are needed in order to offer options for further evaluation reliable for clinical practice. conclusion: both instruments are reliable and acceptable, but still needed more evidence to support their use of these instruments, because few researchers have used the same study design, and comparison of results between them, are often difficult.
Imitation Effects on Joint Attention Behaviors of Children with Autism  [PDF]
Shauna Ezell, Tiffany Field, Jacqueline Nadel, Rae Newton, Greg Murrey, Vijaya Siddalingappa, Susan Allender, Ava Grace
Psychology (PSYCH) , 2012, DOI: 10.4236/psych.2012.39103
Abstract: This study examined the effects of adult imitation on three joint attention behaviors of nonverbal preschoolers with autism including referential looking, gaze following and gesturing to the adult. Videotapes taken from a previous study were recoded for the adult’s imitation behavior and the children’s joint attention behaviors (Field, Field, Sanders, & Nadel, 2001). In the original study, twenty nonverbal, 4 - 6-year- old children with autism were randomly assigned to one of two groups, an imitation or a contingent responsivity group. Both groups of children engaged in an intervention play phase during which the adult imitated the children or contingently responded to them and a subsequent spontaneous play phase. ANOVAs revealed that the imitation group children versus the contingent responsivity group children spent a greater percent time looking at the adult during the intervention phase and looking at the adult and following the adult’s gaze during the spontaneous play phase. A correlation analysis on the data collapsed across the 2 groups yielded significant correlations between adult imitation during the intervention phase and referential looking and gaze following during the spontaneous play phase. Overall, these results revealed that adults imitating preschoolers with autism elicited joint attention behaviors, highlighting the value of imitation as an intervention.
Tempoporomandibular joint: Morphological and phisiological aspects  [PDF]
Mauricio Moscovici
Advances in Bioscience and Biotechnology (ABB) , 2013, DOI: 10.4236/abb.2013.45080

This is a study where 60 temporomandibular joints were analysed. Method: dissection of anatomical parts, preserving TMJ itself, pterygoid lateral muscle, and its insertions. A special study of the articular disc was performed through histological slicing, for defining its structure and insertions. Results were compared with classical descriptions of different authors. Innervation of related structures is commented, as well as clinical aspects of TMJ conditions in view of its morphological and physiological aspects. Dental occlusion guide alterations, malocclusion, interfere on the TMJ movements, leading to meniscus traumatic compres-sion with possible chronic headache syndrome.

Effects of Polysilane-Coating on Interface of Electrofusion Joints for Maintaining Strength  [PDF]
Hiroaki Murase, Shinichi Kawasaki, Toshimichi Kitaoka, Jouji Furukawa, Hirofumi Ueda, Hiroyuki Nishimura, Kazushi Yamada
Materials Sciences and Applications (MSA) , 2015, DOI: 10.4236/msa.2015.64037
Abstract: The fusion strength of electrofusion joints using the polyethylene (PE) pipe connection greatly depends on the amount of sand which adheres to the interface by wind and so on, because there is no flow of melted resin at the fusion interface on electrofusion joints. Therefore, it is necessary to develop a method to prevent the fusion strength from reducing even in the case of sand adhesion. In this study, the fusion interface coated with polysilane, a kind of silicon polymer, effectively prevented the reduction of the fusion strength even if contaminated by sand. It was found that it brought the improvement of the fusion strength since when there was polysilane on the fusion interface. PS deeply permeated the polyethylene layer and lowered the viscosity of polyethylene.
Cartilage Repair by Joint Distraction and Motion Using an External Fixator for Massive Cartilage Defect  [PDF]
Tomofumi Nishino, Tomoo Ishii, Takaji Yanai, Fei Chang, Naoyuki Ochiai
Open Journal of Orthopedics (OJO) , 2013, DOI: 10.4236/ojo.2013.31008
Abstract: The objective of the present study was to investigate our novel methods for the repair of massive cartilage defects by joint distraction and motion using an external fixator. In this study, we used a rabbit model of massive articular cartilage defect in order to evaluate the effectiveness of using joint distraction and motion with a ring-type external fixator. This external fixator has a hinged joint with a center of rotation along the femoral transepicondylar axis, which allows the knee joint to freely flex and extend. Mesenchymal cells from bone marrow, induced by spongialization, were differentiated into mature chondrocytes and formed hyaline-like cartilage as a result of joint distraction and movement. The transplantation of autologous cells expanded from bone-marrow-derived mesenchymal cells, concentrated autologous bone marrow aspirate, and concentrated autologous peripheral blood cells were all effective in promoting cartilage repair. The quality of the cartilage after long-term joint distraction for 6 months was inferior to that after 12 weeks. In general, weight bearing on the regenerated cartilage promoted cartilage repair, although this effect differed based on when gradual weight bearing was begun. Specifically, gradual weight bearing beginning at 9 weeks produced superior results to that beginning at 6 weeks. Our methods provide an optimal environment for cartilage regeneration.
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