Current Concepts of Cervical Disc Arthroplasty

David Turkov; Alan Job; Cesar Iturriaga; Rohit B. Verma

doi:10.14444/8149

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Figure 1
Computed tomographic image of a patient after 2-level anterior cervical discectomy and fusion with allograft.
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Figure 2
Summary of the common cervical disc devices.13 PCM, porous coated motion; UHMWPE, ultra-high-molecular-weight polyethylene.
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Figure 3
M6-C disc.28

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Table

Summary comparing values from 3 different Food and Drug Administration investigational device exemption studies including ProDisc-C, Mobi-C, and M6-C.

Study and Disc	Mean Blood Loss	Surgical Time	Reduction in NDI	Reduction in VAS Neck Pain	Reduction in VAS Arm Pain	Rates of Reoperation	ASD
Murrey et al25
ProDisc-C (n = 106)	83.5 mL	107 min	32.5%	4.6 cm	4.3 cm	1.90%	^a
ACDF (n = 103)	63.5 mL	98.7 min	31.7%	4.3 cm	4.4 cm	8.50%	^a
Davis et al26
Mobi-C (n = 225)	^a	^a	36.5%	5.4 cm	5.6 cm	4.00%	41.50%
ACDF (n = 105)	^a	^a	28.5%	4.8 cm	5.3 cm	15.20%	85.90%
Sasso et al27
M6-C (n = 83)	31 mL	81 min	41.8%	5.9 cm	6.9 cm	0.00%	^a

The reductions in Neck Disability Index (NDI) and visual analog scale (VAS) measure the difference between the value measured prior to surgery and the value measured at 2 years postsurgery.
aData missing where unavailable.
ACDF, anterior cervical discectomy and fusion; ASD, adjacent segment disease.