ArticleJournal of experimental orthopaedics2021
3D-surface scan based validated new measurement technique of femoral joint line reconstruction in total knee arthroplasty.
Article in Journal of experimental orthopaedics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Impact of Joint Line Displacement on Function and Quality of Life After Primary Total Knee Arthroplasty.Journal of clinical medicine · 2026Article
- The ROSA knee robotic system demonstrates superior precision in restoring joint line height and posterior condylar offset compared to conventional manual TKA: a retrospective case-control study.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2024Article
- Prediction of gap balancing based on 2-D radiography in total knee arthroplasty for knee osteoarthritis patients.Arthroplasty (London, England) · 2023Article
- Comparable accuracy of femoral joint line reconstruction in different kinematic and functional alignment techniques.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Article
- Imageless robotic handpiece-assisted total knee arthroplasty: a learning curve analysis of surgical time and alignment accuracy.Archives of orthopaedic and trauma surgery · 2021Article
- Effects of Different Parameter Settings for 3D Data Smoothing and Mesh Simplification on Near Real-Time 3D Reconstruction of High Resolution Bioceramic Bone Void Filling Medical Images.Sensors (Basel, Switzerland) · 2021Article
- Accuracy of joint line restoration based on three-dimensional registration of the contralateral tibial tuberosity and the fibular tip.Journal of experimental orthopaedics · 2021Article
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThis study aimed to validate a new joint line measurement technique in total knee arthroplasty for separated assessment of the medial and lateral femoral joint line alteration with 3D-surface scan technology. Separate assessment of the medial and lateral joint line alteration may improve TKA alignment assessment regarding to joint line restoration in kinematic alignment and use of robotic-assisted TKA surgery.
methodsThe medial and lateral joint line difference after TKA implantation on an artificial bone model was analyzed and compared with a 3D-scan and full femoral radiographs pre- and postoperatively. Radiographic analysis included the perpendicular distance between the most distal point of the medial and lateral condyle and the reproduced preoperative lateral distal femoral angle (LDFA). For evaluation of validity and reliability, radiographs were captured initially with true anteroposterior view and subsequently with combined flexion and rotation malpositioning. Reliability of the introduced measurement technique in between three observers was tested with intraclass correlation coefficient (ICC).
resultsRadiographic measurement showed a mean difference of 0.9 mm on the medial side and 0.6 mm on the lateral side when compared to the 3D-surface scan measurement. The reliability of measurement accuracy was ≤ 1 mm in x-rays with < 10° flexion error regardless to malrotation in these images. The ICC test showed very good reliability for the medial joint line evaluation and good reliability for lateral joint line evaluation (ICC 0.92, ICC 0.86 respectively).
conclusionThe new introduced joint line measurement method showed a sufficient reliability, accuracy and precision. It provides separated information about medial and lateral joint line alteration in TKA surgery in absolute values. LEVEL OF EVIDENCE: V - Experimental Study.
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