Recent research and surgeon perspectives are shedding light on spine implant durability, clinical outcomes and the potential benefits and limitations of emerging technologies.
From expandable cage collapse and cervical disc replacement to patient-specific implants and long-term motion preservation, here are five findings to know.
1. Spine cage collapse reached 20.5% in one study. A retrospective study of 168 patients undergoing minimally invasive transforaminal lumbar interbody fusion found secondary cage collapse in 20.5% of patients treated with Medtronic’s Catalyft PL cage, compared with 1.8% treated with Expanding Innovations’ X-PAC cage. At the individual cage level, collapse rates were 16.7% and 1.2%, respectively. The findings follow a 2025 FDA Class II recall involving potential height loss or collapse of the Catalyft PL system. Researchers cautioned that the nonrandomized study could not establish whether cage design caused the difference.
2. Expandable cages restored more disc height but showed no significant alignment advantage. A review by researchers at New York City-based Hospital for Special Surgery highlighted a meta-analysis of 15 retrospective studies involving 2,247 patients. Expandable cages produced greater disc height restoration than static cages, but no significant difference in segmental lordosis. Evidence on cage subsidence was mixed, raising questions about whether the devices’ technical advantages translate into better long-term outcomes.
3. Cervical disc replacement showed sustained improvements through two years. An international study of 120 patients treated with Synergy Spine Solutions’ Synergy Disc found that mean Neck Disability Index scores decreased from 43.4 before surgery to 7.8 at two years, while mean neck pain scores fell from 5.8 to 0.8. No device-related adverse events, explants or supplemental fixation were reported during follow-up. Separately, a U.S. trial found an 87.1% composite clinical success rate for the device, compared with 56.6% for historical fusion controls.
4. Patient-specific spine implants are expanding beyond complex deformity surgery. Jonathan Hobbs, MD, a neurosurgeon at Chesterton, Ind.-based Lakeshore Bone & Joint, recently performed a two-level lumbar fusion using patient-specific cages and rods. He sees potential for the technology in degenerative spine surgery but cautioned that evidence of improved outcomes and fewer revisions remains limited. “We need to determine whether more consistent execution of the surgical plan translates into better patient-reported outcomes, durable fusion and fewer revisions,” he told Becker’s.
5. Cervical disc maintained motion in 85% of implants at 10 years. A long-term follow-up study of Spineart’s Baguera C artificial cervical disc found that 85% of implants maintained motion a decade after surgery. The findings were among the clinical evidence supporting the device’s FDA approval for one- and two-level cervical disc replacement in August 2026. The approval was also supported by two randomized controlled trials involving nearly 600 U.S. patients.
At the Becker’s 32nd Annual Meeting: The Business and Operations of ASCs, taking place October 29-31 in Chicago, ASC leaders, surgeons and healthcare executives will explore strategies to drive growth, enhance operational performance, navigate reimbursement challenges and prepare for the future of ambulatory surgery. Apply for complimentary registration now.
