ArticleBMC musculoskeletal disorders2018
Single cut distal femoral osteotomy for correction of femoral torsion and valgus malformity in patellofemoral malalignment - proof of application of new trigonometrical calculations and 3D-printed cutting guides.
Article in BMC musculoskeletal disorders, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 31 citations in OpenAlex.
- Assessment and management of torsional malalignment in paediatric patients with patellofemoral joint instability.Journal of children's orthopaedics · 2026Article
- Reducing unintended valgus deformity after supracondylar femoral derotational osteotomy: Influence of derotation amount and osteotomy method based on femoral antecurvature.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025Article
- [Single-cut derotational osteotomy of the distal femur for correction of torsion and frontal axis].Operative Orthopadie und Traumatologie · 2024Review
- Mitigation of gap formation resulting from saw blade in single-cut osteotomy.Journal of veterinary science · 2024Article
- Intraoperative control by Schanz-screws is inaccurate to achieve the exact amount of correction in de-rotational osteotomies.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Observational
- Mathematically Directed Single-Cut Osteotomy.Medicina (Kaunas, Lithuania) · 2022Review
- Heat Sterilization Effects on Polymeric, FDM-Optimized Orthopedic Cutting Guide for Surgical Procedures.Journal of functional biomaterials · 2021Article
- Coronal and Transverse Malalignment in Pediatric Patellofemoral Instability.Journal of clinical medicine · 2021Article
- The impact of mal-angulated femoral rotational osteotomies on mechanical leg axis: a computer simulation model.BMC musculoskeletal disorders · 2020Article
- What is the Geometric Rule that Guides Accurate Vertical Orientation of the Single-cut Inclined Osteotomy in a Combined Angulation-rotation Deformity of Long Bone?Strategies in trauma and limb reconstructionReview
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Authors and funding
9 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe purpose of this study was to perform a derotational osteotomy at the distal femur, as is done in cases of patellofemoral instability, and demonstrate the predictability of three-dimensional (3D) changes on axes in a cadaveric model by the use of a new mathematical approach.
methodsTen human cadaveric femurs, with increased antetorsion, underwent a visually observed derotational osteotomy at the distal femur by 20°, as is commonly done in clinics. For surgery, a single cut osteotomy with a defined cutting angle was calculated and given using a simple 3D-printed cutting guide per specimen, based on a newly-created trigonometrical model. To simulate post-operative straight frontal alignment in a normal range, a goal for the mechanical lateral distal femur angle (mLDFA) was set to 87.0° for five specimens (87-goal group) and 90.0° for five specimens (90-goal group). Specimens underwent pre- and post-operative radiographic analysis with CT scan for torsion and frontal plane x-ray for alignment measurements of mLDFA and anatomical mechanical angle (AMA).
resultsPerformed derotation showed a mean of 19.69° ±1.08°SD (95% CI: 18.91° to 20.47°). Regarding frontal alignment, a mean mLDFA of 86.9° ±0.66°SD (87-goal-group) and 90.42° ±0.25° SD (90-goal group), was observed (p = 0.008). Overall, the mean difference between intended mLDFA-goal and post-operatively achieved mLDFA was 0.14° ±0.56° SD (95% CI: -0.26° to 0.54°).
conclusionA preoperative calculated angle for single cut derotational osteotomy at the distal femur leads to a clinically precise post-operative result on torsion and frontal alignment when using this approach.
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