The laconic comedian Stephen Wright recalled that when he turned 2 years old, he was upset, because in one year his age had doubled and he worried that by the time he was 6, he would be 32.
The point to be had is that growth rates gain their relevance from the base on which the rate is applied. Growth from 1 to 2 is 100%, but growth from 100 to 101 (in both cases only an increment of 1) is 1%.
For this reason, it is worth considering the relevance of spine surgery segment growth rates, as illustrated below, by considering not only the growth rate, but the relative size of segments. Below is the global spine surgery product market by segment, presenting both the percentage of the total market each represents and the compound growth of each segment from 2011 to 2020.
Source: MedMarket Diligence, LLC; Report #M520.
It is obviously important to look at relative size and growth in order to put each in perspective. For example, Axial lumbar interbody fusion ("AxiaLIF") is projected to have dramatic growth, but the absolute significance of this is diminished since it proceeds from an almost insubstantial base. By contrast is posterior pedicle screw fusion systems, with a CAGR under 10% but representing well over 20% of the total market.