Temporary screw epiphysiodesis for correction of ankle valgus in children with multiple hereditary exostoses : a case-control study.
- 1Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
- 2Department of Pediatric Orthopaedics, Altonaer Children´s Hospital, Hamburg, Germany.
- 3Department of Pediatric Orthopaedics, Schoen Clinic Hamburg Eilbek, Hamburg, Germany.
Abstract
Aims
In patients with multiple hereditary exostosis (MHE), the development of ankle valgus is a common deformity. The aim of this study was to evaluate whether temporary screw epiphysiodesis of the medial distal tibia leads to a correction of the deformity and to provide further information on the timing and duration of the operative treatment, considering sex-specific differences and a concomitant fibular shortening or relevant exostoses.Methods
The data of 37 MHE patients with a total of 68 ankles, and 35 patients with idiopathic ankle valgus with a total of 56 ankles, were analyzed retrospectively. The lateral distal tibia angle was measured before and after treatment. We also assessed complications, relevant exostoses, and a fibular shortening, as well as sex-specific differences in the correction rate.Results
Ankle valgus improved in all but one patient of the MHE group with a mean valgus correction of 9.6° (control group: 9.9°). The correction rate was significantly lower in the MHE group than in the control group (0.5° vs. 0.8° per month, p < 0.001), resulting in a significantly higher wearing time in the MHE group (20.12 vs. 14.59 months, p = 0.002). No significant sex-specific differences were found neither in the MHE group nor in the control group. Complications were observed in five ankles of the MHE group (screw breakage during explantation) and none in the control group. Concomitant exostoses or fibular shortening did not affect the correction of ankle valgus.Conclusion
Temporary screw epiphysiodesis is an effective method for the treatment of ankle valgus in MHE patients. As the correction rate per month is lower in MHE patients, operative treatment should be performed earlier to achieve satisfactory correction.
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BibTeX
@article{schmitz2026temporary,
title = {{Temporary screw epiphysiodesis for correction of ankle valgus in children with multiple hereditary exostoses : a case-control study.}},
author = {Sarah I Schmitz and Moritz Broja and Anne Andresen and Alexandra Doerell and Luisa Saegebrecht and Martin Rupprecht and Kiril Mladenov and Alexander S Spiro},
journal = {Bone \& joint open},
year = {2026},
month = oct,
doi = {10.1302/2633-1462.710.bjo-2026-0157.r1},
url = {https://europepmc.org/article/MED/42849903},
note = {CC BY},
}
RIS
TY - JOUR
TI - Temporary screw epiphysiodesis for correction of ankle valgus in children with multiple hereditary exostoses : a case-control study.
AU - Sarah I Schmitz
AU - Moritz Broja
AU - Anne Andresen
AU - Alexandra Doerell
AU - Luisa Saegebrecht
AU - Martin Rupprecht
AU - Kiril Mladenov
AU - Alexander S Spiro
PY - 2026
DA - 2026/10/09
JO - Bone & joint open
DO - 10.1302/2633-1462.710.bjo-2026-0157.r1
UR - https://europepmc.org/article/MED/42849903
AB - Aims In patients with multiple hereditary exostosis (MHE), the development of ankle valgus is a common deformity. The aim of this study was to evaluate whether temporary screw epiphysiodesis of the medial distal tibia leads to a correction of the deformity and to provide further information on the timing and duration of the operative treatment, considering sex-specific differences and a concomitant fibular shortening or relevant exostoses.Methods The data of 37 MHE patients with a total of 68 ankles, and 35 patients with idiopathic ankle valgus with a total of 56 ankles, were analyzed retrospectively. The lateral distal tibia angle was measured before and after treatment. We also assessed complications, relevant exostoses, and a fibular shortening, as well as sex-specific differences in the correction rate.Results Ankle valgus improved in all but one patient of the MHE group with a mean valgus correction of 9.6° (control group: 9.9°). The correction rate was significantly lower in the MHE group than in the control group (0.5° vs. 0.8° per month, p < 0.001), resulting in a significantly higher wearing time in the MHE group (20.12 vs. 14.59 months, p = 0.002). No significant sex-specific differences were found neither in the MHE group nor in the control group. Complications were observed in five ankles of the MHE group (screw breakage during explantation) and none in the control group. Concomitant exostoses or fibular shortening did not affect the correction of ankle valgus.Conclusion Temporary screw epiphysiodesis is an effective method for the treatment of ankle valgus in MHE patients. As the correction rate per month is lower in MHE patients, operative treatment should be performed earlier to achieve satisfactory correction.
SN - 2633-1462
ER -