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Fig. 2 | BMC Surgery

Fig. 2

From: Influence of the deviated center of rotation on facet joint degeneration after cervical disc replacement – an in vivo study with a minimum of 10-year follow-up

Fig. 2

Evaluation of facet joint degeneration by CT scan, with the white arrow pointing the degenerated facet joint. a Hypertrophy of facet joint, 1 point when hypertrophy is present on one side of the articular surface, and 2 points when it is on both sides. b Osteophytes, 1 point when osteophytes are present. c Irregularity of articular surface, 1 point when the articular surface is irregular. d Narrowing of joint space, 1 point when the joint space is narrowed

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