Primary stability of the Activ L® intervertebral disc prosthesis in cadaver bone and comparison of the keel and spike anchoring concept.

BMC Musculoskelet Disord · 2021 · PMC8577002 · PMID 34749688

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did not reach statistical significanceno p-value reported

The keel anchoring system again showed smaller micromotion, but on this occasion it did not reach statistical significance.

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