A new jig for proximal tibial osteotomy.

The result of a proximal dome-shaped tibial osteotomy depends greatly on the accuracy of the surgical procedure. Contemporary jigs still are not sufficiently precise to provide three-dimensional guidance. A new jig was designed to place the pins correctly in both coronal and sagittal planes and to provide anterior advancement of the distal fragment of the tibia. The results obtained with this relatively simple device are predictable and reproducible.