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Search Results: 1 - 10 of 2686 matches for " joint "
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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.
Metastatic Rectal Adenocarcinoma of the Hip and Knee Joints: A Case Series  [PDF]
Adam C. Rothenberg, Karl J. Henrikson, Suzanne C. Schiffman, Mark A. Goodman
Journal of Cancer Therapy (JCT) , 2014, DOI: 10.4236/jct.2014.54039

Two cases are presented of patients with a history of metastatic rectal adenocarcinoma presenting with a painful joint effusion. Both cases are potential examples of metastasis to periarticular bone with local infiltration to the synovium, which is one proposed mechanism of intrasynovial metastasis. While skeletal metastases are a relatively common occurrence in metastatic adenocarcinoma, intraarticular metastasis is extremely rare. These cases highlight the need to consider metastasis in the differential of joint swelling in the setting of a history of adenocarcinoma.

Use of Dental Inlay for Treatment of Hip Joint Dysregulation: A Case Report  [PDF]
Yoshiro Fujii
Case Reports in Clinical Medicine (CRCM) , 2015, DOI: 10.4236/crcm.2015.411072
Abstract: The purpose of this study was to demonstrate the improvement of hip joint dysregulation, including pain (coxalgia), tension, and restriction of joint mobility, using a dental gold alloy inlay. The subject was a 63-year-old man who was suffering from the abovementioned symptoms for several months. On placement of the gold alloy inlay on his chest, the joint flexibility was observed to increase, and the severity of the abovementioned symptoms decreased. When the inlay was placed in his tooth, the flexibility of the joint further increased, and all other symptoms disappeared. No side effects were observed, and the prognosis was good. We believe that these effects may be explained using the electromagnetic waves emitted by the inlay and by the restoration of biting conditions. Future multidisciplinary research focusing on possible underlying mechanisms regarding the relation between electromagnetic waves and dentistry is necessary.
Case Report: Osteochondral Fragment—A Rare Cause of Locked Metacarpophalangeal Joint  [PDF]
Kelvin Ramsey, S. Overstall, A. Fleming
Surgical Science (SS) , 2011, DOI: 10.4236/ss.2011.26076
Abstract: We describe the presentation of a patient with sudden, sharp pain associated with a snapping sensation, swelling and pain over the metacarpophalangeal joint (MCPJ) with no history of direct trauma. The finger was held in 30 degrees of flexion and significantly deviated to the ulnar side with loss of extension. A diagnosis of traumatic rupture of the radial sagittal band of the extensor mechanism was made but the cause at exploration was found to be impingement of an osteochondral fracture fragment. This is a rare cause of irreducible loose body ‘locking’ of the metacarpophalangeal joint.
Benign Giant Cell Tumor of the Foot Originating from Talonavicular Joint  [PDF]
Hakan Cift, Korhan Ozkan, Serkan Senol, Esat Uygur, Harzem Ozger
Open Journal of Orthopedics (OJO) , 2012, DOI: 10.4236/ojo.2012.22011
Abstract: Benign Giant Cell Tumor is a relatively common benign lesion which usually appears as an enlarging painless mass and has a synovial origin. Although benign giant cell tumors generally involve tendon sheaths, they are infrequently documented in the foot. A 45 years old female presented with a complaint of a lump on the top of her left foot. Under general anesthesia with a pneumatic tourtniquet the mass excised with great care not to leave any residual tumor tissue that can cause recurrence. Benign giant cell tumor of the foot can be associated with talonavicular joint capsule which can be detected with MRI imaging and total excision of the lesion is mandatory to prevent recurrence.
A case report: Bilateral atraumatic proximal tibiofibular joint osteoarthritis  [PDF]
Gilberto Yoshinobu Nakama, Guilherme C. Gracitelli, Alberto de Castro Pochini, Caio Augusto de Souza Nery, Mario Carneiro Filho
Case Reports in Clinical Medicine (CRCM) , 2013, DOI: 10.4236/crcm.2013.24073

Introduction: Proximal tibiofibular joint osteoarthritis is a rare disease most commonly occurring in the presence of either systemic inflammatory conditions or severe knee osteoarthritis. Case Presentation: The authors present a case report of isolated bilateral tibiofibular arthrosis in an otherwise healthy 28-year-old female patient. The patient presented with complaints of lateral knee pain. Radiographs and magnetic resonance imaging (MRI) revealed bilateral tibiofibular joint osteoarthritis. Trauma, repetitive use injury, and rheumatologic causes were excluded. The patient’s pain was initially managed conservatively, but she subsequently underwent tibiofibular arthrodesis for progressive pain symptoms. We review in this report the current literature on tibiofibular joint osteoarthritis and its treatment. Conclusion: Isolated tibiofibular joint osteoarthritis is a rare condition that may progress and requires surgical treatment to achieve optimal clinical outcomes.

Tuberculosis Arthritis of the Sternoclavicular Joint  [PDF]
Osman Walid, Triki Mohamed Amine, Kaziz Hamdi, Jemni Sonia, Naouar Nader, Ben Ayech Mohamed Laziz
Open Journal of Orthopedics (OJO) , 2015, DOI: 10.4236/ojo.2015.56018
Abstract: Tuberculosis remains a public health problem in developing country particularly in Tunisia. Bone location of tuberculosis infection is increasing and is often misdiagnosed due to the weakness of clinical presentation in early stages. Sternoclavicular joint tuberculosis is rare and unusual location of this disease. However, antibiotherapy and surgical debridement is still the basis of treatment. We report a case of sternoclavicular joint tuberculosis with a follow up of four years. The patient was treated surgically and put under antibiotherapy during twelve months. The site was sterilized. We report this case to show that debridement and antibiotherapy still efficient in tuberculous bone affection no matters the location.
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