Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 2 de 2
Filtrar
Más filtros












Base de datos
Intervalo de año de publicación
1.
J Hand Surg Eur Vol ; 48(8): 757-761, 2023 09.
Artículo en Inglés | MEDLINE | ID: mdl-37066631

RESUMEN

This study investigated the contribution of different forearm muscles, namely the flexor carpi ulnaris, extensor carpi radialis longus and brevis, extensor carpi ulnaris and flexor carpi radialis, during the dart thrower's motion. Thirteen healthy participants were recruited. The forearm muscle activation patterns during the dart thrower's motion were measured using surface electromyography. The average root mean square for the extensor carpi ulnaris was found to be the highest during the dart thrower's motion. Muscle activations during the dart thrower's motion were heterogeneous among the participants. The results suggest the rehabilitation protocol for patients with wrist injuries should be reconsidered.


Asunto(s)
Antebrazo , Articulación de la Muñeca , Humanos , Antebrazo/fisiología , Articulación de la Muñeca/fisiología , Fenómenos Biomecánicos/fisiología , Rango del Movimiento Articular/fisiología , Músculo Esquelético/fisiología
2.
Comput Methods Biomech Biomed Engin ; 26(9): 1077-1085, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-35913092

RESUMEN

Understanding the stresses on the scapholunate interosseous ligament (SLIL) and its interaction with synovial fluid pressure could be vital to improve wrist treatment for various wrist conditions such as arthritis, sprains and tendonitis. This study investigated the interaction between the intra-articular pressure, specifically the synovial fluid pressure change and the SLIL stresses in a computational model during wrist radioulnar deviation (RUD). Magnetic resonance imaging (MRI) scans were used to acquire the anatomical model of the carpal bones and ligament, while the kinematics of scaphoid and lunate were obtained through dynamic computerized tomography (CT) scans. A two-way fluid-structure interaction (FSI) was used to model the dynamics between the scaphoid and lunate, the SLIL, and the synovial fluid. The synovial fluid pressure change was found to be small (-4.86 to 3.23 Pa) and close to that simulated in a previous work without the SLIL (-1.68 to 2.64 Pa). Furthermore, peaks of maximum fluid pressure were found to trail the peaks of ligament stress. Therefore, it is suggested that the influence of synovial fluid pressure on the ligament in the SLIL model is negligible and simulations of the scapholunate joint could forego fluid-structure interactions. Future studies can instead explore other structures in the carpus that can possibly contribute to the ligament stresses. Clinically, treatments can be targeted at these areas to help prevent or slow the progression of ligament injuries into serious consequences like the degenerative joint disease.


Asunto(s)
Articulaciones del Carpo , Hueso Semilunar , Hueso Escafoides , Articulación de la Muñeca/diagnóstico por imagen , Ligamentos Articulares/diagnóstico por imagen , Fenómenos Biomecánicos
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...