Lumbar Facet Joint Replacement
Lumbar Facet Joint Replacement
Lumbar Facet Joint Replacement
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<strong>Facet</strong> <strong>Joint</strong> Degeneration<br />
Grade I Grade II<br />
Grade III Grade IV<br />
[Fujiwara, et al., Spine (2000) 25:23, pp 3036–3044]<br />
Grade I Grade II<br />
Grade III Grade IV<br />
[Tischer, T. et al., Eur. Spine J. (2006) 15: 308–315]<br />
• Grade I: uniformly thick cartilage covers the articular surfaces completely.<br />
• Grade II: cartilage covers the entire surface of the articular process but an<br />
eroded irregular region is evident.<br />
• Grade III: cartilage incompletely covers the articular surfaces with regions<br />
of underlying bone exposed to the joint.<br />
• Grade IV: cartilage is absent except for traces on the articular process.
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