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PubMedDate not supplied

An experimental model to measure the torque of pin insertion and extraction for external fixation.

An original system used to measure torque of pin insertion and extraction in external fixation is presented. The system is made up of an electronic dynamometric key and an analogic/digital switchboard that may be linked up to a personal computer. The in vitro results show the simplicity of use and the versatility of the system, that is capable of providing the surgeon with accurate indicative values as to the mechanical resistance of the bone-pin interface during implantation of any fixator.

Biomechanical Phenomena↗

PubMedDate not supplied

[AIDS-related cryptococcosis: diagnostic aspects, prognostic and therapeutic implications].

Diagnostic techniques of AIDS-related cryptococcosis were assessed in a series of 43 HIV-infected patients, and microbiological features were correlated to the clinical course and outcome of disease. Polysaccharide antigen detection was the most sensitive method for central nervous system infection, followed by direct microscopy and culture: in 4 patients this visceral mycosis was initially diagnosed by the detection of isolated cerebrospinal fluid antigen. Thirty-one patients out of 43 suffered from disseminated infection (with positive blood cultures and/or antigenemia). The occurrence of clinical relapses, a lethal outcome, and time to relapses or to death, did not differ significantly between patients with isolated central nervous system and those with disseminated cryptococcosis.

AIDS-Related Opportunistic Infections↗