Distal radial joint orientation line
Distal radial joint orientation line
- Acronym: DRJOL
Definition
The distal radial joint orientation line is a landmark used to assess angular deformities of the radius and provide indications for their correction.
In the sagittal plane, the distal radial joint orientation line is determined from a mediolateral radiograph or multiplanar reconstruction of the radius/ulna. It is the line drawn between the cranial part of the articular surface for the carpus of the radius and the caudal part of the articular surface for the carpus of the radius.
In the frontal plane, the distal radial joint orientation line is determined from a craniocaudal radiograph or multiplanar reconstruction of the radius. It is the line drawn between the lateral part of the articular surface for the carpus of the radius and the medial part of the articular surface for the carpus of the radius, ignoring the medial styloid process. Alternatively, 2 points can be connected tangentially to the proximal part of the intermedioradial carpal bone.
References
Fox J, Tomlinson JL. Principles of Angular Limb Deformity Correction. In: Tobias KM, Johnston SA, editors. Veterinary Surgery Small Animal. St Louis (MI): Elsevier Saunders; 2012. p.657-668.
Fox et al. (2006). Principles of Uniapical and Biapical Radial Deformity Correction Using Dome Osteotomies and the Center of Rotation of Angulation Methodology in Dogs. Veterinary Surgery;35:67–77. doi:10.1111/j.1532-950X.2005.00114.x
Kwon et al. (2022). Evaluation of the radial procurvatum using the center of rotation of angulation methodology in chondrodystrophic. Dogs Front Vet Sci; 8:774993. doi: 10.3389/fvets.2021.774993
