LLD Assessment & Quantification
Quantification of LLD![](/sites/default/files/Pediatric Carpal Bones.jpg)
X-ray
1. Teleroentgenogram
- single exposure both legs
- long film with ruler
- Parallax errors
2. Orthoroentgengram
- same long Xray
- separate exposures hip, knee & AJ
- eliminates parallax error
- problem artefact
3. Scanogram