Article
Lumbar ossification of the posterior longitudinal ligament as a distinct phenotype of diffuse spinal ligament ossification.
The spine journal : official journal of the North American Spine Society - 1 Jul 2026
Koike Yoshinao, Endo Tsutomu, Fujita Ryo, Yamada Katsuhisa, Kanayama Masahiro, Sudo Hideki, Kadoya Ken, Xue Huohuo, Terkawi Mohamad Alaa, Ukeba Daisuke, Ohnishi Takashi, Fukada Shotaro, Sodeyama Yohei, Suzuki Ryota, Ishii Misaki, Iwasaki Norimasa
Abstract excerpt
BACKGROUND CONTEXT: Lumbar ossification of the posterior longitudinal ligament (L-OPLL) has been underrecognized and remains poorly characterized clinically. We hypothesized that L-OPLL constitutes a distinct phenotype within the broader OPLL spectrum, sharing features of obesity and diffuse spinal ligament ossification. PURPOSE: To evaluate the clinical and radiographic features of L-OPLL and assess their...
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