Spinal Parameter are Age Specific

Spinal Parameter are Age Specific

Today, I came across an engaging and thought-provoking discussion on the use and interpretation of spinal parameters in orthopedic practice, particularly concerning their application to varying age groups and conditions. The topic has garnered a significant amount of controversy, and rightly so, as it deftly challenges established medical practices and calls into question the one-size-fits-all approach to corrective spinal surgery.

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The discourse primarily centers around the established validity of spinal parameters in juvenile vs degenerative scoliosis management—a realm where these metrics have historically provided excellent guidance. Despite the deeply ingrained trust in these parameters due to decades of positive outcomes, I have observed that their application has been broadened somewhat indiscriminately over the past 15 years. It is increasingly common to see these parameters employed as justification for major surgeries aimed at correcting degenerative changes.?

My stance, honed by my professional experiences, is one of caution. I am of the firm belief that spinal parameters are indeed age-specific, and universal application without due consideration to the individual's age can prove not just overly ambitious but potentially detrimental. The notion of realigning the spine of an 80-year-old patient to match parameters typical of a 20-year-old does not just border on the unrealistic—based on what I've observed, it can actually be counterproductive.

Furthermore, recent studies have shone a light on the variability of spinal parameters between seated and standing positions, opening up another avenue of debate: to which position should these parameters be normalized when planning treatment? In my current practice, I've adopted a more conservative approach, wherein I strive to revert a patient's spinal alignment to their status approximately one year prior to the onset of symptoms.?

This methodology appears to be resonating well with my patients, yielding clinical improvements that are not only notable but enduring. Simultaneously, it underscores the value of individualized treatment over more extensive and invasive adjustments.

I am eager to hear from the wider medical community on this matter. The goal of my inquiry is not to incite a rigid or confrontational debate but rather to encourage a productive, collegial exchange of perspectives. How do my peers address the dilemma of spinal parameter adjustments in their practice, especially for older adults with degenerative spine conditions? What benchmarks and considerations are deemed most critical when determining the extent of corrective intervention?

Reflecting on the diverse opinions and techniques is crucial to enhancing our collective understanding and ultimately refining our approach to patient care in orthopedics.

Mike Selby

Complex Paediatric and Adult Spine Surgeon

9 个月

Bill Clifton can speak to his excellent review paper better than I can but there was definitely a trend to overcorrection arising out of initial French led enthusiasm…. Aged match SVA is something I still use but the debate arises in physiological v chronological age then as well. The one thing I believe is very important in any construct is restoration of lordosis from L4-S1. We will never completely solve PJK and ASD with fusions but - if you aim for 35-40 degrees for every patient and then you seem to get the base right so any revision means we can avoid PSOs which, whilst “fun”, are far riskier than any ACR…

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