Spinal Alignment Solutions

Spinal Alignment Solutions manufactures PI-Rods, patient-specific pre-contoured spinal fusion rods designed to achieve optimal segmental lordosis alignment during lumbar spine surgery. The product line includes six curved rod configurations (lumbar L1-S1 and short segment rods) that are selected based on a single pelvic incidence measurement from lateral radiographs. The rod profiles are derived from normative data from asymptomatic subjects and patients with successful fusion outcomes, with segmental lordosis targets stratified by pelvic incidence per vertebral level. The company's approach moves beyond generic one-size-fits-all rods by enabling surgeons to match patient anatomy more precisely. The planning process involves measuring pelvic incidence on a true lateral radiograph, marking femoral head centers and S1 endplate landmarks, and selecting the appropriate PI-Rod configuration. The rods arrive OR-ready with dorsal laser marks designating target landing zones for pedicle screw placement. The technology is supported by peer-reviewed spine surgery literature (Diebo et al., JBJS 2024) demonstrating improved outcomes in degenerative fusion cases with excellent patient-reported outcomes and no adjacent-segment complications in the study cohorts. Intended for orthopedic spine surgeons performing lumbar fusion procedures.