Overview of Treatment for Ossification of the Longitudinal Ligament and the Ligamentum Flavum

Opll Operation

The Investigation Committee on Ossification of the Spinal Ligaments, subsidized by the Japanese Ministry of Health, Labor, and Welfare, has conducted various studies of the ossification of the posterior longitudinal ligament (OPLL) and ossification of the ligamentum flavum (OLF) since 1975. In 2002, the Committee established a subcommittee on clinical practice guidelines, which set out to systematically review articles on OPLL. This review, presented in this chapter, is based on knowledge...