The terms “young” patient and “long-term” results are frequently used. Although the age of patients, at surgery, and the length of follow-up are stated, the correlation between the two has not been established. As a result any comparison between published series is largely subjective.

What has not been considered, and has not been documented, is that increasing follow-up must out of necessity, identify ever younger patients that have undergone the operation.

Patients’ mean age, both at the primary operation and the follow-up was recorded from November 1962 and December 2014 in 25752 primary LFAs (Tables 44.1 and 44.2, and Fig. 44.1).