ArticleInternational orthopaedics2017
Presence of rotational errors in long leg radiographs after total knee arthroplasty and impact on measured lower limb and component alignment.
Article in International orthopaedics, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 2 of them syntheses that pooled it.
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Who cites it
19 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- The learning curve of robotic-assisted total knee arthroplasty: a systematic review and meta-analysis.Journal of robotic surgery · 2025Pooled it
- Influence of axial limb rotation on radiographic lower limb alignment: a systematic review.Archives of orthopaedic and trauma surgery · 2022Pooled it
- Interobserver reliability of Coronal Plane Alignment of the Knee (CPAK) phenotype classification : external validation using data from the Osteoarthritis Initiative.Bone & joint open · 2025Article
- High agreement of three-dimensional lower limb alignment analysis between a novel cone-beam CT and multislice CT.Journal of experimental orthopaedics · 2025Article
- Comment on: "The learning curve of robotic-assisted total knee arthroplasty: a systematic review and meta-analysis".Journal of robotic surgery · 2025Article
- Image-based robotic (ROSAJournal of orthopaedic surgery and research · 2025Article
- Comparing supine CT scanogram and standing long-leg radiograph for postoperative alignment in total knee arthroplasty: a prospective study.Archives of orthopaedic and trauma surgery · 2024Article
- Management of Bone Loss in Revision Total Knee Arthroplasty: An International Consensus Symposium.HSS journal : the musculoskeletal journal of Hospital for Special Surgery · 2024Review
- Automatic measurement of lower limb alignment in portable devices based on deep learning for knee osteoarthritis.Journal of orthopaedic surgery and research · 2024Article
- Restoration of preoperative tibial alignment improves functional results after medial unicompartmental knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Article
- Significant changes in lower limb alignment due to flexion and rotation-a systematic 3D simulation of radiographic measurements.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Article
- Comparison of Postoperative Coronal Leg Alignment in Customized Individually Made and Conventional Total Knee Arthroplasty.Journal of personalized medicine · 2021Article
- Advances in Daily Musculoskeletal Imaging: Automated Analysis of Classic Radiographs.Radiology. Artificial intelligence · 2021Article
- Automated Analysis of Alignment in Long-Leg Radiographs by Using a Fully Automated Support System Based on Artificial Intelligence.Radiology. Artificial intelligence · 2021Article
- Slight under-correction using individualized intentional varus femoral cutting leads to favorable outcomes in patients with lateral femoral bowing and varus knee.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Article
- Lateral femoral sliding osteotomy in total knee arthroplasty with valgus deformity greater than twenty degrees.International orthopaedics · 2019Article
- Influence of the post-operative axis on the clinical results of total knee replacement for severe varus deformities: does a slight residual varus improve the results?International orthopaedics · 2019Article
- Rotation of intramedullary alignment rods affects distal femoral cutting plane in total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2018Article
- Radiographic Evaluation of Alignment Following Total Knee Arthroplasty - a Systematic Review. Part II.Maedica · 2018Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeRotation of the lower limb in weight bearing long leg radiographs has a great impact on measured component and lower limb alignment parameters. We asked which rotational errors of long leg radiographs are present in a high volume centre and which radiological and clinical consequences arise regarding measured coronal component and lower limb alignment after total knee arthroplasty.
methodsIn 100 long leg radiographs coronal femoral and tibial component alignment and hip knee ankle angle (HKA) were measured. Present rotational errors in long leg radiographs were determined by fibular overlap and its impact on alignment parameters calculated.
resultsA mean internal rotation of 8.1° (9.3 SD) with a range between 36° of internal and 16° of external rotation was found in long leg radiographs. This resulted in mean differences between measurements before and after rotational correction regarding femoral and tibial component alignment and HKA of 0.6-0.8° (range 3.5° valgus and 1.6° varus error). Clinically, 11 out of 100 patients were wrongly assigned to either mal- or well-alignment (neutral mechanical alignment within ±3° varus or valgus).
conclusionSurgeons should be aware of potential rotational errors in long leg radiographs after total knee arthroplasty resulting in wrong measurements. In case of rotational errors, radiographs should be repeated or rotational corrections calculated. For study purposes only radiographs after rotational correction should be accepted.
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