The association between lower Hounsfield units of the upper instrumented vertebra and proximal junctional failure after limited lumbar fusion for adult spinal deformity. - Moridaira H; Inami S; Takahata M; Takeuchi D; Ueda H; Iimura T; Kanto T; Takada S; Doi K; Taneichi H (BMC musculoskeletal disorders, 2025)