ArticleArthroplasty (London, England)2024
Imageless robotic total knee arthroplasty determines similar coronal plane alignment of the knee (CPAK) parameters to long leg radiographs.
Article in Arthroplasty (London, England), 2024. 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, 7 citations in OpenAlex.
- Pre-resection ligament balance more frequently reproduces joint line orientation compared to inverse-kinematic workflow in robotic total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2026Article
- Does applying CPAK classification boundaries using measurements from a surgical navigation system result in different class distributions? A retrospective assessment.Journal of experimental orthopaedics · 2026Article
- Evolving Philosophies of Alignment in TKA: From Mechanical Uniformity to Personalised Harmony.Medicina (Kaunas, Lithuania) · 2026Review
- The HKA axis varies significantly with knee motion: A robot-assisted intraoperative evaluation during total knee arthroplasty supports the use of dynamic, not static, alignment classifications.Journal of experimental orthopaedics · 2025Article
- Increased prevalence of lateral trochlear groove wear among valgus alignment subtypes by coronal knee alignment classification: A retrospective single-center study.Journal of orthopaedics · 2025Article
- Editorial: Advances in artificial intelligence and robotics in joint arthroplasty.Arthroplasty (London, England) · 2025Article
- Robotics total knee arthroplasty: is an image-based the only solution?Frontiers in surgery · 2025Review
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Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe coronal plane alignment of the knee (CPAK) classification was first developed using long leg radiographs (LLR) and has since been reported using image-based and imageless robotic total knee arthroplasty (TKA) systems. However, the correspondence between imageless robotics and LLR-derived CPAK parameters has yet to be investigated. This study therefore examined the differences in CPAK parameters determined with LLR and imageless robotic navigation using either generic or optimized cartilage wear assumptions.
methodsMedial proximal tibial angle (MPTA) and lateral distal femoral angle (LDFA) were determined from the intraoperative registration data of 61 imageless robotic TKAs using either a generic 2 mm literature-based wear assumption (Nav
resultsICCs between observers for LLR were over 0.95 for MPTA, LDFA, JLO, and aHKA, indicating excellent agreement. Mean CPAK differences were not significant between LLR and Nav
conclusionsImageless robotic navigation data can be used to calculate CPAK parameters for arthritic knees undergoing TKA with good agreement to LLR. Generic wear assumptions determined MPTA and LDFA with MAE within 2° and optimizing wear assumptions showed negligible improvement.
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