ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2020
Design improvement in patient-specific instrumentation for total knee arthroplasty improved the accuracy of the tibial prosthetic alignment in the coronal and axial planes.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2020. 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.
- Medial-pivot design total knee arthroplasty provides higher post-operative patient satisfaction than posterior-stabilized design under mechanical alignment.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2026Article
- Three-dimensional verification of osteotomy accuracy in total knee arthroplasty using intraoperative CT imaging: a case series study.BMC musculoskeletal disorders · 2025Article
- Review
- The influence of the number of postoperative radiological outliers on the survival and clinical outcome of total knee arthroplasty.Journal of clinical orthopaedics and trauma · 2025Article
- Comparison of curative effect between OBS assisted by 3D printing and PFNA in the treatment of AO/OTA type 31-A3 femoral intertrochanteric fractures in elderly patients.Frontiers in medicine · 2023Article
- Surgeon Dominated Design Can Improve the Accuracy of Patient-Specific Instruments in Kinematically Aligned TKA.Journal of personalized medicine · 2022Article
- Finite element analysis of the tibial component alignment in a transverse plane in total knee arthroplasty.Journal of applied biomedicine · 2021Article
- Evaluation of the accuracy of resected bone thickness based on patient-specific instrumentation during total knee arthroplasty.Archives of orthopaedic and trauma surgery · 2021Article
- Patient-specific instrumentation combined with a new tool for gap balancing is useful in total knee replacement: a 3-year follow-up of a retrospective study.Journal of orthopaedic surgery and research · 2021Article
- Malrotation of the fixed-bearing posterior stabilized total knee prosthesis causes a postoperative rotational mismatch between the femur and tibia.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Article
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7 authors.
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Abstract
purposeThe accuracy of patient-specific instrumentation (PSI) in total knee arthroplasty (TKA) is still controversial, especially in the tibial prosthesis. It was hypothesized that the design modification of PSI improved the tibial prosthetic alignment and reduced the associated complications. The aim of this study was to compare the accuracy of a conventional PSI with that of a newly designed PSI for total knee arthroplasty (TKA) using a new three-dimensional (3D) measurement method.
methodsThirty TKAs each using the conventional and newly designed PSIs were studied. The postoperative 3D-computed tomography (3D CT) image was superimposed on the preoperative 3D CT plan. The absolute differences in the tibial prosthetic alignment between the preoperative and postoperative 3D CT images were directly measured in the coronal, sagittal, and axial planes. Knees in which the difference in the prosthetic alignment was > 3° were considered deviations.
resultsThe new PSI showed less mean absolute differences and lower rate of deviations than the conventional PSI in the coronal and axial planes (p = 0.045 and p = 0.004, respectively). The deviations (> 3°) of the tibial prosthesis using the conventional PSI were 27, 30, and 63% and of those using the new PSI were 0, 20, and 20% in the coronal, sagittal, and axial planes, respectively.
conclusionsThis is the first report to evaluate the effect of improvement in PSI design on the postoperative alignment using 3D method, and it clearly showed that the modification significantly improved the accuracy of alignment and reduced the deviations. LEVEL OF EVIDENCE: Therapeutic study, case-control study, Level III.
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