ABSTRACT
Abstract The aim of this study was to evaluate the biostimulation (BS) effect of the gallium-aluminum-arsenide (GaAlAs) diode laser by histopathology with an experimental osteoarthritis (OA) model in the temporomandibular joints (TMJ) of rabbits, in the early period. GaAlAs diode laser is used for pain reduction in TMJ disorders. Twenty-four adult male New Zealand white rabbits were randomly divided into three equal groups: Control Group (CG), Study Group 1 (SG-1), and Study Group 2 (SG-2). Mono-iodoacetate (MIA) was administered to the right TMJs of all rabbits. The rabbits did not undergo any treatment for four weeks to allow the development of osteoarthritis. In SG-1, laser BS was applied to the rabbits at 940 nm, 5 W, and 15 J/cm2 in continuous wave mode at 48-hour intervals for 14 sessions; and in SG-2, laser BS was applied with the same parameters at 24-hour intervals for 28 sessions. Laser BS was not applied to the rabbits in CG. All rabbits were sacrificed simultaneously. The TMJ cartilage, osteochondral junction, chondrocyte appearance, and subchondral ossification were evaluated histopathologically. There was no statistically significant difference between the groups in terms of cartilage, osteochondral junction, chondrocyte appearance, and subchondral ossification values (p > 0.05). The laser BS protocol used in the study had no positive histopathological effects on TMJ OA in the early period.
Subject(s)
Animals , Male , Osteoarthritis/radiotherapy , Temporomandibular Joint Disorders/radiotherapy , Low-Level Light Therapy/methods , Lasers, Semiconductor/therapeutic use , Osteoarthritis/pathology , Rabbits , Temporomandibular Joint/pathology , Temporomandibular Joint Disorders/pathology , Reproducibility of Results , Treatment Outcome , Chondrocytes/radiation effects , Chondrocytes/pathologyABSTRACT
La gonartrosis afecta a un elevado número de pacientes, y los que la padecen son enfermos crónicos, con características especiales por el dolor y depresión como consecuencia de la misma. La magnetoterapia, aunque ha sido utilizada para diversas afecciones reumáticas, no se ha empleado en la gonartrosis asociada a ejercicios terapéuticos, por lo que se realizó un estudio explicativo, experimental, tipo ensayo clínico terapéutico para comprobar la eficacia de los imanes permanentes asociados al ejercicio, en pacientes con gonartrosis en el Hospital Militar Docente Dr. Mario Muñoz Monroy, de Matanzas. Se conformaron dos grupos con 42 pacientes, uno experimental (imanes y ejercicios) y otro de control, donde se empleó el tratamiento convencional. Se evaluó el dolor a través del Test de Likert, la capacidad funcional por el de Waddell, así como la fuerza muscular y la amplitud articular, mediante la goniometría. Al culminar los tratamientos se realizó una evaluación final en ambos grupos de estudio, comprobándose que la mayoría de los pacientes alcanzaron resultados entre excelente y bueno, avalados por la disminución del dolor, el aumento del arco articular y de la fuerza muscular, así como la mejoría de la discapacidad que presentaban al inicio, haciendo una contrastación porcentual en ambos grupos de estudio...
Gonarthrosis affects a high number of patients, and those who suffer it are chronic patients, with special characteristics because of the pain and depression experienced in consequence. Magnetotherapy, although it has been used against several rheumatic diseases, has not been used in gonartrosis associated to therapeutic exercises. So, we carried out an explicative, experimental, clinico-therapeutical trial-type study, to verify the efficacy of the permanent magnets associated to exercising, in patients with gonartrosis in the Teaching Military Hospital Dr. Mario Muñoz Monroy, of Matanzas. Two groups with 42 patients were formed, one experimental (magnets and exercises) and a control one, where the conventional treatment was used. We evaluated pain using the Test of Likert, the functional capacity using the Waddell one, and also the muscular strength and the join amplitude using goniometry. When the treatment was finished we made a final assessment in both groups, verifying that most of the patients had results between excellent and good, shown for pain decreasing, increasing of the join arc and the muscular strength, and also for the improvement of the disability they presented at the beginning, making a percentual correlation in both groups...