[Stress hip fractures in men in military training].

Introduction: Stress fractures are common injuries in the military population, they begin with the imposition of repetitive and excessive effort on the bone. This leads to the acceleration of bone remodeling and production of microfractures. The incidence, during their basic combat training, is 0.

Mechanical and structural adaptations to migration in the flight feathers of a Palaearctic passerine.

Current avian migration patterns in temperate regions have been developed during the glacial retreat and subsequent colonization of the ice-free areas during the Holocene. This process resulted in a geographic gradient of greater seasonality as latitude increased that favoured migration-related morphological and physiological (co)adaptations. Most evidence of avian morphological adaptations to migration comes from the analysis of variation in the length and shape of the wings, but the existence of intra-feather structural adjustments has been greatly overlooked despite their potential to be under natural selection.

[IGF-1 levels in anterior cruciate ligament reconstruction using allograft vs autograft in patients at Central Military Hospital].

Background: Treatment of ACL injury is surgical reconstruction. It is not known whether the result is better depending on the type of graft used. Insulin-like growth factor type 1(IGF-1) is a powerful stimulant of extracellular matrix and chondrocyte growth.