Cervical spinal fusion — the surgical procedures for degenerative cervical disc disease, myelopathy, radiculopathy, trauma, and deformity creating the cervical spine device market including anterior cervical plates, cervical interbody cages, posterior cervical screw systems, and motion-preserving cervical disc arthroplasty devices — represents the second-largest spine surgery segment after lumbar surgery, with the Spinal Fusion Devices Market reflecting cervical spine as an important market dimension.

ACDF plate and cage market dominance — the anterior cervical discectomy and fusion (ACDF) procedure representing the most common cervical spine surgery performed — creates the dominant cervical fusion device market. Anterior cervical plates (Medtronic Atlantis, DePuy Synthes Cornerstone, Stryker Reflex Hybrid) providing supplemental fixation and ACDF interbody cages (PEEK or titanium) placed in the disc space after decompression represent the standard cervical fusion implant market.

Cervical disc arthroplasty competing with fusion — the motion-preserving cervical disc replacement devices (Medtronic Prestige LP, DePuy Synthes Prodisc-C, Globus Medical Secure-C) maintaining cervical motion at the treated segment to reduce adjacent segment disease risk — compete directly with ACDF fusion for the same patient population. Multiple Level 1 randomized clinical trials showing CDA equivalent or superior to ACDF in appropriately selected patients for radiculopathy have created the evidence basis for arthroplasty as a fusion alternative rather than a complement.

Posterior cervical fixation for multilevel disease — the lateral mass screw systems for posterior cervical stabilization in multi-level cervical myelopathy, cervical deformity, and revision surgery — represent the posterior cervical fixation market complementing anterior approaches. The growing recognition that combined anterior-posterior cervical approaches are needed for complex multilevel cervical disease creates the circumferential fusion device market at the premium end of cervical spine surgery.

Do you think cervical disc arthroplasty will eventually displace ACDF as the standard surgical treatment for single-level cervical radiculopathy in appropriately selected patients, or will surgeons maintain preference for the technically simpler and cheaper fusion procedure?

FAQ

What is ACDF and what implants does it use? ACDF (Anterior Cervical Discectomy and Fusion) removes the degenerated cervical disc and decompresses the nerve root and/or spinal cord from the anterior approach; implants used: interbody cage — placed in disc space to maintain height and provide anterior column support for bone graft and fusion; materials: PEEK (most common), titanium (standard or 3D-printed porous), or allograft structural graft (fibula or iliac crest); cage graft window packed with autograft, allograft, or DBM; anterior cervical plate (optional but commonly used) — titanium plate spanning the anterior vertebral bodies at treated levels, screws angling into bodies providing additional fixation while fusion consolidates; locking screw mechanisms prevent plate-screw backout; standalone cages (zero-profile or integrated screw) available that anchor directly to endplates without separate plate; single-level ACDF recovery approximately four to six weeks; multi-level requires anterior plate for adequate stability.

What are the results of cervical disc arthroplasty versus ACDF randomized trials? CDA versus ACDF FDA IDE trials: Prestige ST trial — CDA showed superior neurological success and overall success at seven years versus ACDF; ProDisc-C trial — CDA equivalent to ACDF with lower reoperation rate at five years; Mobi-C trial — CDA at one and two levels showed significantly lower adjacent segment reoperation rates versus ACDF at four years; BRYAN trial — neurological success similar; overall evidence: CDA maintains motion at treated level (typically seven to nine degrees of motion preserved); CDA shows lower adjacent segment disease requiring reoperation in some studies; CDA patients have higher return-to-work rates and faster recovery in some analyses; CDA disadvantages: contraindicated in significant facet arthrosis, severe osteoporosis, cervical instability, prior neck surgery, or inflammatory arthritis; current evidence supports CDA as alternative to ACDF for single or two-level cervical radiculopathy/myelopathy in appropriate patients.

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