Myth or fact: 3D-printed off-the-shelf prosthesis is superior to titanium mesh cage in anterior cervical corpectomy and fusion?

Publisher: BioMed Central Country of Publication: England NLM ID: 100968565 Publication Model: Electronic Cited Medium: Internet ISSN: 1471-2474 (Electronic) Linking ISSN: 14712474 NLM ISO Abbreviation: BMC Musculoskelet Disord Subsets: MEDLINE

Original Publication: London : BioMed Central, [2000-

Artificial Limbs* ; Lordosis*/surgery ; Spinal Cord Diseases*/surgery ; Spinal Fusion*/adverse effects ; Spinal Fusion*/methods; Humans ; Blood Loss, Surgical ; Cervical Vertebrae/diagnostic imaging ; Cervical Vertebrae/surgery ; Printing, Three-Dimensional ; Quality of Life ; Surgical Mesh ; Titanium ; Treatment Outcome

Background: To find out if three-dimensional printing (3DP) off-the-shelf (OTS) prosthesis is superior to titanium mesh cages in anterior cervical corpectomy and fusion (ACCF) when treating single-segment degenerative cervical spondylotic myelopathy (DCSM).
Methods: DCSM patients underwent ACCF from January 2016 to January 2019 in a single center were included. Patients were divided into the 3DP group (28) and the TMC group (23). The hospital stays, operation time, intraoperative blood loss, and the cost of hospitalization were compared. The Japanese Orthopedic Association (JOA) scores and Neck Disability Index (NDI) were recorded pre-operatively, 1 day, 3, 6, 12, and 24 months post-operatively. Radiological data was measured to evaluate fusion, subsidence, and cervical lordosis. Patients were sent with SF-36 to assess their health-related quality of life (HRQoL).
Results: The differences in operative time, intraoperative blood loss, and hospital stay were not statistically significant between groups (p > 0.05). Postoperative dysphagia occurred in 2 cases in the 3DP group and 3 cases in the TMC group, which all relieved one week later. The difference in improvement of JOA and NDI between the two groups was not statistically significant (p > 0.05). No hardware failure was found and bony fusion was achieved in all cases except one in the 3DP group. The difference in cervical lordosis (CL), fused segmental angle (FSA), mean vertebral height (MVH), and subsidence rates between groups at each follow-up time point was not statistically significant and the results of the SF-36 were similar (p > 0.05). The total cost was higher in the 3DP group with its higher graft cost (p < 0.05).
Conclusion: In treating single-segment DCSM with ACCF, both 3DP OTS prosthesis and TMC achieved satisfactory outcomes. However, the more costly 3DP OTS prosthesis was not able to reduce subsidence as it claimed.
(© 2024. The Author(s).)

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Keywords: 3D-printed prosthesis; Anterior cervical corpectomy and fusion; Cervical spondylotic myelopathy; Cost-effectiveness; Subsidence

D1JT611TNE (Titanium)

Date Created: 20240126 Date Completed: 20240205 Latest Revision: 20240206

20240206

PMC10811816

10.1186/s12891-024-07213-7

38279132