Greater tubercule offset
Greater tubercule offset
- Acronym: GTO
Definition
The greater tubecule offset of the humerus is a landmark used to assess anatomical variations of the humerus, particularly in the development of humeral prosthetic stem. It is determined in the frontal plane from a craniocaudal radiograph or multiplanar reconstruction of the humerus.
The greater tubecule offset is the distance between the proximal part of the greater tubercle of the humerus and the anatomic humeral axis.
Values of 5.9 +/- 2.7 mm have been reported for the greater tubecule offset in non-chondrodystrophic dogs.
References
Smith et al. Three-dimensional assessment of curvature, torsion, and canal flare index of the humerus of skeletally mature nonchondrodystrophic dogs. Am J Vet Res 2017;78:1140–1149 https://doi.org/10.2460/ajvr.78.10.1140
