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Degenerative conditions of the lumbar spine treated with intervertebral titanium cages and posterior instrumentation for circumferential fusion.

J Spinal Disord. 1998 Dec 1; 11 (6): 479-86.
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Comparative charge analysis of one- and two-level lumbar total disc arthroplasty versus circumferential lumbar fusion.

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Anterior lumbar interbody fusion with processed sea coral (coralline hydroxyapatite) as part of a circumferential fusion.

Spine. 2002 Dec 15; 27 (24): E518-25; discussion E526-7.