ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2014
The coronal alignment after medial unicompartmental knee arthroplasty can be predicted: usefulness of full-length valgus stress radiography for evaluating correctability.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.
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Who cites it
23 citing papers in PubMed.
- Greater knee flexion and patient-reported function after unicompartmental knee arthroplasty than after total knee arthroplasty: a propensity score-matched study.International orthopaedics · 2026Article
- Lateral unicompartmental knee arthroplasty anatomy, indications, technique, and outcomes: a narrative review.Archives of orthopaedic and trauma surgery · 2025Review
- Beyond valgus stress radiography: arithmetic HKA angle (aHKA) as a superior predictor of limb alignment after UKA.Arthroplasty (London, England) · 2025Article
- [Evolving indications for partial knee replacement : New aspects].Orthopadie (Heidelberg, Germany) · 2024Review
- Valgus stress radiographs have a minor additional value in detecting lateral cartilage wear when selecting patients for medial partial knee replacement.Archives of orthopaedic and trauma surgery · 2024Article
- Factors predicting lower limb alignment after Oxford medial unicompartmental knee arthroplasty.Scientific reports · 2024Article
- Analysis of correlation between medial joint line change and lower limb coronal alignment after Oxford unicompartmental knee arthroplasty.Clinics (Sao Paulo, Brazil) · 2024Article
- Article
- Predicting valgus malalignment after mobile-bearing UKA using a new method: the arithmetic HKA of the arthritic knee.Archives of orthopaedic and trauma surgery · 2023Article
- Valgus Stress Radiograph Can Predict Alignment Change of Medial Mobile-Bearing Unicompartmental Knee Arthroplasty.Orthopaedic surgery · 2023Article
- Coronal tibiofemoral subluxation under valgus stress force radiography is useful for evaluating postoperative coronal tibiofemoral subluxation in mobile-bearing UKA.Archives of orthopaedic and trauma surgery · 2023Article
- Preoperative uncorrectable tibiofemoral subluxation can worsen clinical outcomes after fixed-bearing unicompartmental knee arthroplasty: a retrospective analysis.Archives of orthopaedic and trauma surgery · 2022Article
- Agreement and accuracy of radiographic assessment using a decision aid for medial Oxford partial knee replacement: multicentre study.Knee surgery & related research · 2022Article
- Pre-operative predictive factors of residual varus on the mechanical axis after Oxford unicompartmental knee arthroplasty.Frontiers in surgery · 2022Article
- [Multivariate analysis of varus after Oxford unicompartmental knee arthroplasty].Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences · 2021Article
- Valgus Correctability and Meniscal Extrusion Were Associated With Alignment After Unicompartmental Knee Arthroplasty.Clinical orthopaedics and related research · 2020Article
- Compensatory Function of the Subtalar Joint for Lower Extremity Malalignment.Advances in orthopedics · 2019Review
- Medial joint line elevation of the tibia measured during surgery has a significant correlation with the limb alignment changes following medial unicompartmental knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2018Article
- Effects of Lower Limb Alignment and Tibial Component Inclination on the Biomechanics of Lateral Compartment in Unicompartmental Knee Arthroplasty.Chinese medical journal · 2017Article
- A modified technique to reduce tibial keel cutting errors during an Oxford unicompartmental knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017Article
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeWe aimed to clarify whether the coronal alignment after medial unicompartmental knee arthroplasty (UKA) is predictable using preoperative full-length valgus stress radiography.
methodsThirty-seven consecutive patients with a mean age of 71.5 ± 7.0 years awaiting medial UKA were recruited. Full-length weight-bearing radiographs of the lower limbs were obtained pre- and postoperatively. Preoperative full-length valgus stress radiography in the supine position was also performed, and the transition of the hip-knee-ankle angle (HKAA) and the weight-bearing ratio were assessed. The tibia first cut technique was used, and the distal femur was cut parallel to the cutting surface of the proximal tibia during surgery.
resultsThe mean postoperative HKAA was 2.0° ± 2.1° varus, and the mean weight-bearing ratio was 43.1 ± 7.7 %; each of these parameters demonstrated significantly strong correlations with the values on the preoperative valgus stress radiographs (p < 0.01), while the correlation between the postoperative alignment and the preoperative standing alignment without stress was moderate (p < 0.01). The postoperative alignment was slightly undercorrected compared to that observed on the valgus stress radiographs (p < 0.05), and no knees exhibited evident overcorrection compared to that on the valgus stress radiographs.
conclusionPreoperative valgus stress radiography is useful for evaluating the correctability of varus deformities and predicting the postoperative coronal alignment. For clinical relevance, performing preoperative valgus stress radiography would help to more precisely select patients and, when combined with the tibia first cut technique, aid in achieving the expected knee alignment and avoid severe undercorrection or overcorrection. LEVEL OF EVIDENCE: Diagnostic study, Level II.
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