The Montecristo mining district, northern Chile: the relationship between vein-like magnetite-(apatite) and iron oxide-copper-gold deposits.

Unlabelled: The Montecristo district, northern Chile, is one of the few places worldwide where there is a direct relationship between magnetite-(apatite) (MtAp) mineralization and iron oxide-copper-gold (IOCG) mineralization. The MtAp mineralization includes Ti-poor magnetite, fluorapatite, and actinolite and is crosscut and partially replaced by a younger IOCG mineralization that includes a second generation of actinolite and magnetite with quartz, chalcopyrite, pyrite, and molybdenite. The MtAp stage at Montecristo is interpreted as the crystallized iron-rich melts that used the pre-existing structures of the Atacama Fault System as conduits.

The triglyceride/glucose index as an insulin resistance marker in the pediatric population and its relation to eating habits and physical activity.

Introduction: To examine the triglyceride/glucose index (TyG) as an insulin resistance marker in obese children and adolescents and its relation to clinical and biochemical parameters, body composition and lifestyle.

Patients And Method: Sixty patients aged 7-16 years of age were enrolled. Anthropometric variables were recorded, together with pubertal stage, blood pressure and body composition assessed by bioimpedance.

Spontaneous Fractures of a Modern Modular Uncemented Femoral Stem.

Background: Femoral stem fracture following total hip arthroplasty is an uncommon event that requires immediate revision surgery.

Questions/purposes: We report on four patients who experienced stem fractures of one design and a review of the US Food and Drug Administration adverse event reports on this design.

Methods: Fracture surfaces of four EMPERION™ (Smith & Nephew, Memphis, TN) femoral stems were analyzed under optical and scanning electron microscopy.

Benefits of early intramedullary nailing in femoral metastases.

Purpose: Pathological fractures of the long bones are common complications of metastatic disease; however, the outcome of different surgical techniques for the treatment of these fractures has not been clearly defined. The aim of this study was to evaluate differences in prophylactic and therapeutic intramedullary nailing in femoral metastasic implants.

Methods: Sixty-five patients with metastasis of the femur were analysed retrospectively (37 females; 28 males) between 1995 and 2011 (follow-up 15 months).