نتایج جستجو برای: biomechanical testing
تعداد نتایج: 355482 فیلتر نتایج به سال:
Footwear-generated biomechanical manipulation of lower-limb joints has been shown to influence lower-limb biomechanics. Numerous studies report the influence of such interventions on the knee, however little is known about the influence of these interventions on the hip. The present study analyzed kinetic and kinematic changes about the hip of 12 healthy young males who underwent biomechanical ...
In high-grade spondylolisthesis, the surgical treatment should be aimed at achieving good stability to allow solid fusion in the face of high biomechanical forces at the lumbosacral junction. A 360 degrees fusion seems to be able to provide this stability. This is however extensive surgery and many problems and complications have been reported. In order to overcome these difficulties, various n...
OBJECTIVE To verify whether the combination of tibial cross pin fixation and femoral screw fixation presents biomechanical advantages when compared to femoral cross pin fixation and tibial screw fixation for the reconstruction of the anterior cruciate ligament (ACL). METHODS Thirty-eight porcine knees and bovine extensor digitorum tendons were used as the graft materials. The tests were perfo...
A new injectable biomimetic composite cement composed of nano-hydroxyapatite (n-HA) and polyamide 66 (polyhexamethylene adipamide) has been developed. This study investigated that in vitro biomechanical performances of three n-HA/PA composite cements in the augmentation of osteoporotic cancellous bone were different in various n-HA content to evaluate the clinical applicability. The thoracic ve...
Corticosteroids (CS) or hyaluronic acid (HA) is used in subacromial injection for the conservative treatment of rotator cuff tears (RCT); this study addresses the question of how CS and HA affect the tendon tissue and fibroblasts in vitro and in rats. Cell proliferation assays were performed in human tendon fibroblasts from RCT. Rats underwent surgery to create RCT, and the surgical sites were ...
Interfaces between tendon/ligament and bone ("entheses") are highly specialized tissues that allow for stress transfer between mechanically dissimilar materials. Entheses show very low regenerative capacity resulting in high incidences of failure after surgical repair. Tissue engineering is a promising approach to recover functionality of entheses. Here, we established a protocol to decellulari...
The labor-intensive nature of the construction industry requires workers to frequently perform physically demanding manual work, thereby exposing them risk musculoskeletal injury (approximately 31.2 cases per 10,000 full-time equivalent workers). Exoskeletons and exosuits (collectively called EXOs here) are designed protect from these injuries by reducing exertion muscle fatigue during work. Ho...
PURPOSE The authors applied a novel microindentation technique to characterize biomechanical properties of small ocular and orbital tissue specimens using the hertzian viscoelastic formulation, which defines material viscoelasticity in terms of the contact pressure required to maintain deformation by a harder body. METHODS They used a hard spherical indenter having 100 nm displacement and 100...
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