Abstract
Previous studies have identified the importance and difficulty associated with accurately positioning radial head replacements due to the complex shape of the native radial head. Errors in implant positioning are further exacerbated when the radial head is fractured or has previously been excised. Anatomic landmarks, such as the biceps tuberosity and radial styloid, are highly variable between patients making them suboptimal for clinical use. We hypothesized that a computer and image-assisted guidance system for radial head implant positioning would lead to highly accurate positioning.
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