Study Design. Epidemiological analysis using CTs. Objective. To investigate the true incidence
of lumbar spondylolysis in the general population in Japan. Summary of Background …

Background Lumbar spondylolysis is a defect of the pars interarticularis known to occur as a
stress fracture. Its incidence varies considerably depending on ethnicity, sex, and sports …

Study Design. A histologic, biologic, and immunohistochemical assessment using human
samples of lumbar ligamentum flavum. Objective. To clarify the pathomechanism of loss of …

The progressive failure and scale effect of trap-door problems were evaluated, by comparing
experimental results with finite element analyses employing the elasto-plastic model …

This study evaluates the scale effect observed in the behavior of a shallow anchor in dense
sand, by comparing a conventional 1 g model test with a finite element analysis. The model …

The functional and anatomical results of distal end of radius fractures with severe displacement
in 22 elderly patients are reviewed in this retrospective study. The mean age of the …

Object Various kinds of trunk braces have been used to achieve bone healing in cases of
pediatric lumbar spondylolysis. However, the optimal brace for achieving bone healing is …

Minimally invasive percutaneous endoscopic discectomy (PED) with a transforaminal approach
under local anesthesia was started in the late 20th century. As the procedure requires a …

Introduction As the ligamentum flavum (LF) covers most of the posterolateral part of the
lumbar spinal canal, its thickening can be attributed to the development of lumbar canal …

The minimally invasive percutaneous endoscopic discectomy (PED) as the postero-lateral
approach with the local anesthesia was started in the late 20th century. The procedure only …