Table 2.
Study Characteristics a
| Lead Author | Year | Study Design | LOE | MINORS Score | Patients (Knees), No. | Mean Age, y | Female/Male, No. | Mean Follow-up, mo |
|---|---|---|---|---|---|---|---|---|
| Zhang 40 | 2021 | Cohort study b | 3 | 20/24 | 66 (66) | 21 | 59/7 | 37 |
| Biedert 2 | 2020 | Case series | 4 | 12/16 | 7 (9) | 22 | 7/0 | 25 |
| Yang 38 | 2019 | Case series | 4 | 12/16 | 20 (20) | 21 | 18/2 | 18 |
| Frings 15 | 2019 | Case series c | 4 | 11/16 | 16 (19) | 21 | 15/4 | 26 |
| Imhoff 19 | 2019 | Case series | 4 | 13/16 | 42 (44) | 28 | NR | 44 |
| Nelitz 27 | 2015 | Case series | 4 | 12/16 | 12 (12) | 18 | 12/0 | 16 |
a LOE, level of evidence; MINORS, Methodological Index for Nonrandomized Studies; NR, not reported.
b This study compared the results of patients undergoing derotational femoral osteotomy vs a nonderotational osteotomy procedure.
c This study reported clinical results after combined distal femoral osteotomy, which included 19 derotational femoral osteotomies and 12 varus osteotomies. Only patients who underwent derotational femoral osteotomy were included in the systematic review.