| K-F Ring | Kayser-Fleischer Ring |
|---|---|
| HO | hand orthosis; heterotopic ossification; high oxygen; hip orthosis; history of; Holt-Oram [syndrome]... |
| OALL | ossification of anterior longitudinal ligament |
| OPLL | ossification of posterior longitudinal ligament |
| ABR | abortus Bang ring [test]; absolute bed rest; auditory brainstem response |