Figure 5
Micro-fusion. (A) Plain radiography of a 14-year-old girl; a radiolucent line was visible between the apophysis and the posteromedial iliac bone and was graded as Original Risser stage 4 and French Risser stage 3. (B) A coronal 3D reconstruction view; there was absence of any radiolucent line indicating definite fusion, and the staging by Original method was 5 and by French method was 4. Accurate estimation of fusion of iliac apophysis or micro-fusion is difficult on plain radiography.