Table 1.

Modified Neer Classification [13]

Classification	Description	Details
A	Healed	Cyst filled with new bone with small radiolucent area (< 1 cm)
B	Healed with a defect	Radiolucent area (< 50% diameter) with enough cortical thickness
C	Persistent cyst	Radiolucent area (≧ 50% diameter) with thin cortical rim
D	Recurrent cyst	Cyst reappears in the obliterated area or increased residual radiolucent area