The oldest age group, people aged 75 years and older, account for the largest share of vertebral compression fractures (44%) and a major portion (34%) of acquired curvature of the spine, even though they represent only 8% of the population aged 18 years and older. They also account for a large share (29%) of spondylopathy diagnosis as well as 25% of idiopathic curvature of spine diagnosis; this is overall a larger share of all spinal deformity diagnoses than expected for the size of this age group.
People aged 65 to 74 years comprise 9% of the population over 18 years of age. This group also has a higher than expected share of healthcare visits for all spinal deformity diagnoses. The two conditions that stand out in this age group are traumatic spinal fractures (35% of total visits) and spondylolisthesis (30% of all visits).
On an annual average, 15.5 million healthcare visits were made between the years 2008 and 2011 by people aged 18 years and older. Those aged 45 to 64 years, 35% of the population aged 18 years and older, were treated in 44% of these visits. (Reference Table 9B.3 PDF CSV)