Viola and Hastings classified ectopic ossification involving the radioulnar joint and proximal forearm. The type can be helpful in planning the best surgical approach. The authors are from Indiana University.
Requirement: CT or MRI study of the elbow and proximal forearm
Location of Ossification |
Type |
proximal radioulnar joint |
I |
proximal radioulnar joint to bicipital tuberosity |
II |
spares radioulnar joint, extending distally |
III |
Radioulnar Joint |
Extending Distally |
Type |
Yes |
No |
I |
Yes |
Yes |
II |
No |
Yes |
III |
Location of Ossification |
Subtype |
limited to anterior |
A |
limited to posterior |
B |
involves the midpoint |
C |
where:
• A patient may have more than one subtype, with A and B if there is sparing in the mid-portion.
Specialty: Surgery, orthopedic