3D maxillofacial surgery planning - one decade development of technology.

Nowadays, techniques and the use of patient specific implants seem to be the recent high technology standard in reconstructive surgery. Surgery planning is as old as the surgery procedures themselves. Any good surgeon, before entering the operating theatre, has a plan for how to proceed. It is based on knowledge and experience in combination of evaluation of all case relevant information. In fact, virtual surgery planning and CAD/CAM reflects the technological "state of the art" into the medical daily practice. Recently, 3D printing technologies became easy and accessible for everyone. Virtual 3D images substituted the plaster models, the film profile analysis switched to digital, 3D printed bone models of the case helped to understand the morphology of the deformity and prepare the osteotomies with "hands on the bone". The authors' own 20 years of experience on surgical planning, the development of digital technologies in oral and maxillofacial surgery is traced and comments on case examples are presented.

[Results of sonographic Examination of Some Tumours and Tumorous Affections of Soft Tissues of the Musculoskeletal Apparatus.]. / Výsledky sonografického vysetrování nekterých tumoru a tumorózních afekcí mekkých tkání pohybového aparátu.

On the basis of a selected group of eight patients the authors compare sonographic, clinical, peroperative and histological findings of tumours and tumorous affections of benign nature of soft tissues of the musculoskeletal apparatus. For a major contribution the authors consider the fact that it is a non-invasive graphic method convenient for the patient by which location and size of the tumour can be determined, as well as the relation of the mass to surrounding structures and to a certain extent also the consistency of the mass on the basis of the so-called A mode. However, the significance of sonography should not be overstimated. It is a com plementary method to other examinations. Mainly it is not able to substitute the resulting histological examination. Key words: sonography, non-invasive graphic method, correlation of sonographic, clinical, per-operative and histological findings.