05/23/2026
Three RADIOGRAPHIC Factors I Evaluate When Considering a Disc Replacement 👇
Cervical disc replacement can be an amazing motion-preserving option for the right patient, but patient selection matters.
When I’m evaluating someone for disc replacement, three things I pay close attention to are:
1️⃣ Severe disc height loss
If the disc space has collapsed by more than 50%, high impact studies have shown outcomes can become less predictable.
2️⃣ Instability or spondylolisthesis
This can suggest more significant arthritis or dysfunction in the posterior joints of the spine. A disc replacement ONLY treats the disc space in the front/middle part of the spine — it does not directly fix the facet joints in the back. Instability inherently implies facet dysfunction
3️⃣ Significant kyphosis
If the cervical spine is hunched too far forward, restoring motion with a disc replacement may not be the best option for every patient. Newer studies, have a challenged this notion, buuuut I’m OK being a traditionalist when it comes to CDAs.
There are definitely excellent surgeons who push the limits in select/many cases, and innovation is an important part of spine surgery. For my own patients, I tend to follow textbook IDE (Investigational Device Exemption) criteria and evidence-based guidelines closely. Practicing in the same city myself and my family were all born and raised in means -I’m not going anywhere, so for me- long-term outcomes are extraordinarily important!!
The goal is not just to do a newer surgery — the goal is to choose the surgery most likely to help that specific patient.