Silver from polyurethane dressing is delivered by gradient to exudate, tissue, and serum of patients undergoing negative-pressure wound treatment.

Objective: This study aimed to evaluate the distribution and concentration of silver eluted from silver-coated polyurethane dressing (V.A.C.

[Quantitative analysis of worn and torn particles in periprosthetic tissue of hip and knee with scanning electron microscopy].

Background: Arthroplasty is successful because biocompatible material is available, but its lifespan decreases due to inadequate fixation, mechanical wear and tear, or biological loss caused by osteolysis. This last is a tissue response to wear particles of the implanted material localized in the bone--prosthesis interface. We undertook this study to present the morphological analysis and characterization of the metal wear particles (MWP) in the periprosthetic tissue of patients with prosthetic loosening.

[Ultrastructure of the anterior capsule of the lens in different pathologies].

Background: We undertook this study to compare the ultrastructural analysis of capsules of normal lenses (phacorefractive procedures) and those of other types of cataracts also such as senile cataracts, with trans-surgical staining.

Methods: Capsule samples were obtained by circular continuous capsulorhexis during phacoemulsification procedures. All samples were fixed and conventionally processed for light- and transmission-electron microscopy analysis.

[Results of the experimental repair of osteochondral lesions in a pig model using tissue engineering].

Objective: To repair experimental osteochondral knee lesions in pigs using tissue engineering.

Material And Methods: Eight 40-kg pigs underwent surgery. Cartilage and periosteal biopsies of their control knee were taken.

[Peripheral hereditary neuropathies: Charcot-Marie-Tooth types 1 and 2].

Objective: We report 14 cases of patients with Charcot-Marie-Tooth types 1 (CMT) and type 2 (CMT2). The objective of this study was to determine the diagnostic value of structural studies of peripheral nerve and striated muscle biopsies and to discuss correlations with clinical symptoms and electrophysiologic findings.

Material And Methods: Nerve and muscle biopsies were obtained and processed according to standards methods for transmission electron microscopy.