In a compression-distraction apparatus for osteosynthesis, including at least two supporting units (1), each incorporating at least two fixing pins (3) fitted in pin holders (2) which are made as a bolt (4) carrying plates (8) having open slots (10) for the pins (3) to fit and a set of spacer shims (9)...http://www.google.com.au/patents/US4978348?utm_source=gb-gplus-sharePatent US4978348 - Compression-distraction apparatus for osteosynthesis