Clinical Study
Management of Late Onset Perthes: Evaluation of Distraction by External Fixator—5-Year Follow-Up
Table 1
Demographic characteristic of patients.
| Case
number | Gender | Age at
onset of
symptoms
(years) | Preop
Herring
grades | Age at
fixator
application
(years) | Duration of
distraction (d) | Herring
grade at
final
follow-up | Length of
follow-up
(months) |
| | 1 | M | 8.2 | C | 8.9 | 11 | C | 61.2 | | 2 | M | 9.1 | B | 9.9 | 13 | B | 53.9 | | 3 | F | 9.4 | C | 10.2 | 11 | C | 58.4 | | 4 | M | 8.6 | B | 9.5 | 15 | B | 60.7 | | 5 | M | 8.9 | C | 9.6 | 14 | C | 54.9 | | 6 | M | 9.8 | B | 10.5 | 16 | C | 55.4 | | 7 | M | 9.6 | B | 9.8 | 13 | C | 52.9 | | 8 | F | 9.3 | C | 9.7 | 15 | C | 56.1 | | 9 | F | 8.7 | C | 9.3 | 12 | C | 60.7 | | 10 | M | 8.9 | C | 9.7 | 16 | C | 59.9 | | 11 | M | 9.2 | C | 10.2 | 16 | C | 61.1 | | 12 | F | 9.3 | C | 10.4 | 15 | C | 49.6 |
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