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  • Title: Superior functional outcome after femoral derotation osteotomy according to gait analysis in cerebral palsy.
    Author: Niklasch M, Dreher T, Döderlein L, Wolf SI, Ziegler K, Brunner R, Rutz E.
    Journal: Gait Posture; 2015 Jan; 41(1):52-6. PubMed ID: 25217494.
    Abstract:
    The femoral derotation osteotomy (FDO) is seen as the golden standard treatment in children with cerebral palsy and internal rotation gait. Variable outcomes with cases of over- and undercorrection mainly in the less involved patients have been reported. The determination of the amount of derotation is still inconsistent. 138 patients (age: 11 (± 3.3) years) with cerebral palsy and internal rotation gait were examined pre- and 1 year postoperatively after distal or proximal FDO, using standardized clinical examination and 3D gait analysis. Three groups were defined retrospectively depending on the amount of derotation in relation to the mean hip rotation in stance (MHR) during gait analysis: Group A (derotation angle > MHR + 10°), Group B (derotation angle = MHR ± 10°), Group C (derotation angle <MHR-10°), and compared according to their postoperative mean hip rotation. ANOVA with Bonferroni post hoc test was used for statistics (p < 0.05). Group B had the greatest benefit with the highest rate (86%) of good results (postoperative MHR = ± 15°). In contrast there were 14% cases of overcorrection and 5% cases of deterioration in Group A with only 81% good results and only 79% good results in Group C. It can be concluded, that it is less likely to have unsatisfactory outcomes if the amount of FDO is defined according to the findings of gait analysis compared with clinical examination.
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