Botulinum toxin type B in the treatment of residual limb hyperhidrosis for lower limb amputees: a pilot study.

Objective: Botulinum toxin type A is established in the treatment of hyperhidrosis. This pilot study was designed to prove the alleviating effect of botulinum toxin type B (BTX-B) in sweating of the residual limb, as BTX-B, even in low doses, is supposed to possess a more specific action in sympathetic nerves than botulinum toxin type A does at a wider radius of diffusion.

Design: Nine lower limb amputees received 1750 U BTX-B injected at the site of maximum sweating.

Application of an augmented reality tool for maxillary positioning in orthognathic surgery - a feasibility study.

Background: An augmented reality tool for computer assisted surgery named X-Scope allows visual tracking of real anatomical structures in superposition with volume rendered CT or MRI scans and thus can be used for navigated translocation of bony segments.

Methods: In a feasibility study X-Scope was used in orthognathic surgery to control the translocation of the maxilla after Le Fort I osteotomy within a bimaxillary procedure. The situation achieved was compared with the pre-operative situation by means of cephalometric analysis on lateral and frontal cephalograms.