background: subjects with knee osteoarthritis typically have higher knee adduction moment. current research efforts are mainly focused on therapeutic procedures that potentially may modify disease progression. this preliminary study was designed as a single blind (examiner) randomized control trial to investigate the impact of conventional physical therapy on pain, and knee joint load in subjec...

the aim of this paper is to show the importance of analytic hyperbolic geometry introduced in [9]. in [1], ungar and chen showed that the algebra of the group sl(2,c) naturally leads to the notion of gyrogroups and gyrovector spaces for dealing with the lorentz group and its underlying hyperbolic geometry. they defined the chen addition and then chen model of hyperbolic geometry. in this paper,...

In this paper the stress distribution of a complete assembly of femur and hip prosthesis is investigated with realistic boundary conditions under nine routine activities using finite element analysis. In each activity, different forces of varying magnitude and orientation were applied on the prosthesis during a period of time to examine the critical points developed in the entire 3D model. This...

objectives: the aim of the present study was to compare the performance of the vertical jump task and the level of disability between the coper and non-coper athletes with an anterior cruciate ligament-minus knee. methods: thirty-four professional male athletes with isolated complete anterior cruciate ligament-tear (age 20-29 years and 6-12 months time past injury) were recruited in this study....

This study demonstrates for the first time the development of engineered tissues based on anatomic geometries derived from widely used medical imaging modalities such as computed tomography (CT) and magnetic resonance imaging (MRI). Computer-aided design and tissue injection molding techniques have demonstrated the ability to generate living implants of complex geometry. Due to its complex geom...

background postural instability is one of the common problems of aging. however, with increased age many systems of body such as musculoskeletal system are affected and changed. one of these changes is knee flexion contracture. the study aimed to investigate the simulated knee flexion contracture effects on postural stability in elderly. material and methods 15 elderly subjects (11 men, 4 women...

In this paper, a three-dimensional Boundary Element model of the proximal tibia of the human knee is described and stresses and displacements in the tibial plateau under static loading are computed. The geometry is generated via three-dimensional reconstruction of Computerized Tomographies and Magnetic Resonance Imaging. Various models of different lengths from the tibia plateau are calculated....

BACKGROUND While body mass index (BMI), a modifiable parameter, and knee morphology, a nonmodifiable parameter, have been identified as risk factors for anterior cruciate ligament (ACL) rupture, the interaction between them remains unknown. An understanding of this interaction is important because greater compressive axial force (perhaps due to greater BMI) applied to a knee that is already at ...

Prosthetic knee replacement is a surgical procedure designed to restore knee joint function in cases of advanced osteoarthritis and fracture. Since tibial morphology and microstructure vary among different individuals, the surgeon’s anatomical expertise and knowledge of various implant designs is essential. In order to contribute to the pre-surgical diagnosis of bone degradation, we investigate...

background there is controversy regarding routine prophylaxis for deep vein thrombosis (dvt) in patients treated via a short leg cast or splint following lower extremity trauma. results there were 95 patients with an average age of 38 ± 13.7 (77.9% males); 46 patients had at least one risk factor for dvt. the d-dimer test was positive in 21(22.1%) patients. dvt was confirmed by due in 3 patient...