Poster Presentation Sydney Spinal Symposium 2026

Radiographic outcomes of 3d printed titanium patient specific cervical corpectomy devices; a case series. (#102)

William Parr 1 2 , Ralph Mobbs 3 , Marc Coughlan 4 , Kevin Seex 5 , Jack Hill 1 , William Walsh 2
  1. 3DMorphic, Matraville, NSW, Australia
  2. Surgical and Orthopaedic Research Laboratories (SORL), Randwick, NSW, Australia
  3. Neurosurgery, Prince Of Wales Private, Randwick, NSW, Australia
  4. Neurosurgery, Gosford Private Hospital, Gosford, NSW, Australia
  5. Neurosurgery, Macquarie Neurosurgery, Macquarie Park, NSW, Australia

Introduction: Anterior Cervical Corpectomy and Fusion is used to treat spinal cord compression, failed surgical constructs and traumatic injuries. Multiple device and graft options are available for surgeons, including autograft, expandable cages, and non-expandable cages. Failure rates for fusion in multilevel corpectomy are reported between 33-70%. A systematic review and meta-analysis by Das et al. 2023 reported a revision rate of 16% for expandable cages. Factors such as degree of degeneration, prior instrumentation, and complex pathological anatomies mean standard off-the-shelf options may not always be suitable. There is a need to provide more effective solutions so that outcomes of corpectomy are improved.

Methods: 19 patients treated with Patient Specific Corpectomy Devices (PSCD). The cohort included eight single-level, seven double-level, three triple-level and one quadruple-level corpectomy. Radiographic outcomes included; Cervical Sagittal Angle (CSA) between C2-7, segmental lordosis, and anteroposterior spinal canal diameter.

Results: Mean pre-operative CSA was -0.5 (17.2 SD) degrees, 7.9 (12.8 SD) degrees immediately post-op, and 6.6 (13.4 SD) degrees at the final follow up. Mean segmental lordosis improved from -8.7 (13.7 SD) at pre-operative baseline to -1.4 (7.3 SD) at the final follow up. Mean final follow up time was 10 months. Anteroposterior spinal canal diameter improved significantly (p<0.05) at the operated levels.

There was one case of device displacement, which was subsequently augmented with posterior fixation.

Discussion: The mean change in segmental angle in the present cohort (7.3o) was comparable to the expandable cage group reported in the meta-analysis by Das et al 2023 (6.7 o). The displacement rate in the present cohort (5.3%), can be compared to a displacement rate of 29% for expandable cages, and 5% for non-expandable cages reported by Das et al.

PSCD offer inherent advantages over off-the-shelf cages, as they can be tailored to complex anatomies often present in corpectomy procedures.