Figure 2

Representative images of each surgical procedures. Laminoplasty included open-door method and double-door method. There is no significant difference in any postoperative assessment between both procedures. Preoperative (A) and postoperative (D) radiograms of the OPLL patient received laminoplasty. Posterior recompression with instrumented fusion (PDF) was performed as combinatory procedure of laminoplasty or laminectomy followed by instrumented posterior fusion. Preoperative (B) and postoperative (E) radiograms of the OPLL patient received PDF. Anterior decompression with fusion (ADF) was performed as subtotal corpectomy with extirpation or floating of ossification foci followed by autologous bone graft with anterior plating. Preoperative (C) and postoperative (F) radiograms of the OPLL patient received ADF.