The prevalence of spinal disorders have increased due to recent technological advancements, changing daily life practices, and rising of average age within society. It is anticipated that spinal diseases will be of concern to more than 60% of people who are aged 60 and above. Despite the best efforts in calculation and planning, dissatisfaction rates after non-operative treatment, and mechanical complication rates after surgery are very high (>33%, 1 in 3 patients). When operations are planned according to the current, widely used population-based averages approach, mechanical complications can occur even when the achieved correction is within the recommended ranges. Approximately 50% of patients who experience a mechanical complication require a second intervention. To eliminate the negative outcomes resulting from the use of population-based analysis there is a need for personalised analysis. The GAP Simulator will allow personalized planning and automated simulation, reduce mechanical complication and reintervention rates. Mitigating the risk of complications, and thus the revision surgeries, GAP Simulator will reduce costs and provide savings in terms of health economics. The outcomes of the feasibility study activities have influenced our decision to continue with development and commercialisation.