Calculation of the mechanical properties for an amputee hip joint

The theoretical based of real forces exerted on the human hip joints are calculated. Newton's law at condition of equilibrium to forces and torques applied on human hip joints is suggested theoretically and then applied to a case of hip joint injure and prosthetic. It was found that the forces act on the hip joint is nearly two and a half times the weight of the certain person. The lost of weight for the amputee have been taken under account in calculation to improve local manufacturing in Sudan

Calculation of the mechanical properties for lower limb below knee amputee using partial differential equation and finite element method

The theoretical based of real displacement forces exerted on the below knee for an amputee prosthetic are considered. Partial differential equation [PDE] in boundary condition surround of prosthetic is theoretically suggested in order to find forces components and stresses. The theoretical model is applied to simulate the prosthetic. The data of image segmentations are found to support the results obtained using bio-mechanics simulation. Furthermore, it is important to mention that the fitted socket to the underneath knee prosthetic should have a large safe margin with surround of soft tissue

Use of noninvasive positive pressure ventilation during pregnancy: case series

Mechanical ventilation is commonly required in critically ill pregnant patients, requiring ICU admission, with higher morbidity and mortality related to airway management. Alternatively, noninvasive positive pressure ventilation [NIPPV] is increasingly used to treat nonpregnant patients. Pregnancy has been a contraindication to its use. We would like to report a case series of successful use of NIPPV in pregnancy. NIPPV is increasingly used to treat hypoxemic respiratory failure. It has rarely been used during pregnancy. On the other hand, acute respiratory failure [ARF] remains a leading cause of ICU admission in obstetric patients. The use of NIPPV in managing ARF in pregnant patients was not investigated. We report the outcome of treatment with NIPPV of four sickle cell disease pregnant patients with ARF caused by acute chest syndrome. Median APACHE II score for the four cases was 27. Intubation was avoided in all cases. None had aspiration. Mean duration of NIPPV was 40 h with ICU discharge after a mean of 4 days