Trial reportKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2014
Intra- and post-operative accuracy assessments of two different patient-specific instrumentation systems for total knee replacement.
Trial report 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 33 papers, 4 of them syntheses that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
33 citing papers in PubMed, 4 syntheses or guidelines pooled it.
- No difference between CT- and MRI-based patient-specific instrumentation for total knee arthroplasty: an updated systematic review and meta-analysis.Frontiers in bioengineering and biotechnology · 2025Pooled it
- Fewer femoral rotational outliers produced with CT- than with MRI-based patient-specific instrumentation in total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Pooled it
- Favourable alignment outcomes with MRI-based patient-specific instruments in total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2018Pooled it
- 3D-printing techniques in a medical setting: a systematic literature review.Biomedical engineering online · 2016Pooled it
- No differences in mid-term survival and clinical outcome between CT- and MRI-based patient-specific instrumentation for total knee arthroplasty, a randomized controlled trial.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2024Trial
- Patient-specific instrumentation in total knee arthroplasty: simpler, faster and more accurate than standard instrumentation-a randomized controlled trial.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017Trial
- Surgical accuracy in high tibial osteotomy: coronal equivalence of computer navigation and gap measurement.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2016Trial
- Comparison between patient-specific instruments and conventional instruments and computer navigation in total knee arthroplasty: a randomized controlled trial.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2015Trial
- Small improvements in mechanical axis alignment achieved with MRI versus CT-based patient-specific instruments in TKA: a randomized clinical trial.Clinical orthopaedics and related research · 2014Trial
- Patient-specific computed tomography based instrumentation in total knee arthroplasty: a prospective randomized controlled study.International orthopaedics · 2014Trial
- The effect of using patient-specific guides for total knee replacement without hardware removal in complex post-traumatic arthritis: an in-vitro study.Biomedical engineering online · 2026Article
- Accuracy of Patient-Specific Instrument for Cylindrical Axis Implementation in Kinematically Aligned Total Knee Arthroplasty.Clinics in orthopedic surgery · 2023Article
- Closed-leg standing long leg radiographs can be a useful tool to assess whether the joint line is parallel to the ground in restricted kinematic alignment total knee arthroplasty.Journal of experimental orthopaedics · 2023Article
- Evaluation of the accuracy of resected bone thickness based on patient-specific instrumentation during total knee arthroplasty.Archives of orthopaedic and trauma surgery · 2021Article
- [Clinical application of distal femoral patient-specific cutting guide based on knee CT and full-length X-ray film of lower extremities].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2021Article
- Kinematically Aligned Total Knee Arthroplasty with Patient-Specific Instrument.Yonsei medical journal · 2020Review
- The Accuracy of Alignment Determined by Patient-Specific Instrumentation System in Total Knee Arthroplasty.Knee surgery & related research · 2019Article
- Comparison of knee joint orientation in clinically versus biomechanically aligned computed tomography coordinate system.Journal of orthopaedic translation · 2019Article
- Article
- Does final component alignment correlate with alignment of the bone resection surfaces in cemented total knee arthroplasty?Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2018Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe aim of this study is to assess and compare the accuracy of two different patient-specific instrumentation (PSI) systems for total knee replacement, both intra-operatively for bone preparation and post-operatively for final component alignment.
methodsTwenty-five patients were treated according to a computer tomography (CT)-based PSI system (group A) and 25 to a magnetic resonance imaging (MRI)/X-ray-based system (group B). Alignments on the three anatomical planes and resection thickness at the cutting blocks and at the resulting bone cuts were recorded intra-operatively by a standard surgical navigation system. Alignments of the prosthetic components and mechanical axis were also measured post-operatively on radiographs. These measurements at both the femur and tibia were compared with those of the corresponding pre-operative planning, considering discrepancies larger than 3° as outliers.
resultsIn both groups, the mean absolute differences between pre-operatively planned alignments and corresponding intra- and post-operative measurements ranged from a minimum of 1.2° to a maximum of 2.9° in all three anatomical planes. In both groups and in both femur and tibia, the plane with the smallest percentage of outliers was the coronal, maximum 17%. The comparison between two groups was statistically significant (p = 0.02) in the femoral sagittal plane, where group B showed smaller alignment discrepancies at the cutting blocks.
conclusionsBoth PSI systems showed good alignments in the coronal plane in all stages. For a few measurements, a better performance was observed in the MRI/X-ray-based system than in the CT-based system. LEVEL OF EVIDENCE: I.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.