Review

Long adult deformity fusions to L5 and the sacrum. A matched cohort analysis.

Spine. 2004 Sep 15;29(18):1996-2005.
Case Reports

Is the T9, T11, or L1 the more reliable proximal level after adult lumbar or lumbosacral instrumented fusion to L5 or S1?

Spine. 2007 Nov 15;32(24):2653-61.
Review

Proximal junctional kyphosis following adult spinal deformity surgery.

Eur Spine J. 2014 Dec 1; 23 (12): 2726-36.