Mechanical radial axis
Mechanical radial axis
- Acronym: mRA
Definition
The mechanical radial axis is a landmark used to assess angular deformations of the radius and provide guidance for their correction. It is determined, in the frontal plane, from a cranio-caudal radiograph or a multiplanar reconstruction of the radius.
The mechanical radial axis in the frontal plane is defined by the axis connecting the midpoint of the proximal radial joint orientation line and the midpoint of the distal radial joint orientation line.
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.
Goodrich et al. Thoracic Limb Alignment in Healthy Labrador Retrievers: Evaluation of Standing Versus Recumbent Frontal Plane Radiography. Veterinary Surgery 43 (2014) 791–803. DOI:10.1111/j.1532-950X.2014.12140.x
