Matthias Lerch

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In recent years, various uncemented proximal metaphyseal hip stems were introduced for younger patients as a bone preserving strategy. Initial osteodensitometric analyses of the surrounding bone of short stems indicate an increase of bone mass with secondary bone ingrowth fixation as a predictor of long-term survival of these types of implants. We report(More)
In 68 children without brain-disease, 3 months to 8 years of age, auditory non-target event-related potentials have been elicited. A 500 Hz-tone of 500 ms duration served as frequent stimulus, while a seldom (20%) and irregularly offered 2000 Hz-tone of the same duration produced the event-related potentials. Comparison between the four kinds of(More)
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