ArticleArthroplasty (London, England)2024
Impact of change in coronal plane alignment of knee (CPAK) classification on outcomes of robotic-assisted TKA.
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 26 papers.
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Who cites it
26 citing papers in PubMed, 28 citations in OpenAlex.
- Differences in the coronal plane alignment of the knee (CPAK) measurements using long-leg radiographs and computed tomography.Archives of orthopaedic and trauma surgery · 2026Trial
- [Impact of coronal plane alignment of knee phenotype alteration on short-term effectiveness in robot-assisted total knee arthroplasty].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2026Article
- Robotic-Assisted Total Knee Arthroplasty: Current Evidence on PROMs, Functional Outcomes, Neuromotor Recovery, and Complications-A Narrative Review.Medicina (Kaunas, Lithuania) · 2026Review
- Distribution of coronal plane alignment knee phenotypes in Japanese patients with knee osteoarthritis: a comparison of two-dimensional and three-dimensional measurements.Journal of orthopaedics · 2026Article
- Coronal Plane Alignment of the Knee Classification and Its Correlation with Post-operative Functional Outcomes in Total Knee Arthroplasty: A Prospective Cohort Study.Journal of orthopaedic case reports · 2026Article
- Reliability of the CPAK classification assessed on long-leg X-rays in patients undergoing total knee arthroplasty.Arthroplasty (London, England) · 2026Article
- Coronal plane alignment changes do not affect in vivo kinematics for robotically performed total knee arthroplasty.Journal of experimental orthopaedics · 2026Article
- Functional alignment preserves the native Coronal Plane Alignment of the Knee phenotype while improving early clinical outcomes after robotic-assisted total knee arthroplasty.Orthopedic reviews · 2026Article
- Improved clinical outcomes when maintaining a neutral joint line obliquity at high tibial osteotomy and subsequent total knee arthroplasty.Journal of experimental orthopaedics · 2026Article
- Effect of Anatomic Joint-Line Obliquity Prostheses on Coronal Plane Alignment of the Knee Alignment in a Chinese Population.Arthroplasty today · 2025Article
- Total Knee Arthroplasty and the Evolution of Coronal Alignment: From Mechanical to Personalized Strategies.Journal of personalized medicine · 2025Review
- Robotic-assisted bi-cruciate stabilized TKA with a 3-degree varus inclination does not affect PROMs, regardless of pre-arthritic CPAK classification matching.Archives of orthopaedic and trauma surgery · 2025Article
- A comparative analysis of ChatGPT and Google in providing quality and clinical relevance of responses to patients' frequently asked questions on robotic-assisted total knee arthroplasty.Archives of orthopaedic and trauma surgery · 2025Article
- Kinematic alignment without femoral cartilage-wear compensation for apex-distal joint line obliquity: Effects on component alignment.Journal of experimental orthopaedics · 2025Article
- CORR Insights®: Standardized Intraoperative Robotic Laxity Assessment in TKA Leads to No Clinically Important Improvements at 2 Years Postoperatively: A Randomized Controlled Trial.Clinical orthopaedics and related research · 2025Article
- A novel handheld wireless robot for total knee arthroplasty: Early experiences and clinical results.Journal of experimental orthopaedics · 2025Article
- Beyond the CPAK dogma: robotic FA preserves CPAK better than MA but with equivalent proms at 5-year follow-up.Archives of orthopaedic and trauma surgery · 2025Article
- Preservation of preoperative CPAK is not associated with improved clinical outcomes one-year after functionally aligned robot-assisted TKA.Journal of orthopaedics · 2025Article
- Restricted kinematic total knee arthroplasty provided better functional outcomes and higher satisfaction rates for Asians of genu varum with apex distal joint line over unrestricted kinematic total knee arthroplasty.Arthroplasty (London, England) · 2025Article
- Coronal Alignment Does Not Adequately Predict Femoral Rotation Axes in Total Knee Arthroplasty: Application of a 3D Image-Based Robotic-Assisted Arthroplasty Platform.Bioengineering (Basel, Switzerland) · 2025Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundMechanical alignment with total knee arthroplasty (TKA) has been widely used since the implantation of the first prosthetic knee. Multiple studies have reported 80% patient satisfaction with TKA. However, the reported patients' dissatisfaction is believed to be caused by having to convert different knee alignments to neutral alignments. It is postulated that a change in the CPAK classification of knees leads to patient dissatisfaction. Thus, we hypothesized that a change in CPAK classification with robot-assisted TKA with mechanical alignment does not significantly lead to patient dissatisfaction.
methodsWe retrospectively analyzed 134 patients who underwent robot-assisted mechanical alignment total knee arthroplasty (MA-TKA) using cementless implants and classified them into CPAK system pre- and post-operatively. One year after TKA surgery, we recorded binary responses to patients' satisfaction with the outcome of surgery and analyzed if a change in CPAK classification is associated with the outcome of surgery.
resultsWe found that 125 out of 134 patients (93.28%) were happy with the outcome of surgery. CPAK classification was changed in 116 patients (86.57%) and maintained in 18 patients (13.43%). Our results also showed that 111 (95.7%) out of 116 patients who had a change in CPAK and 14 (77.8%) out of 18 patients who maintained their CPAK post-surgery were happy with the outcome of surgery (OR = 6.3, CI 1.741-25.17, P value = 0.019).
conclusionWe concluded that changing the patient's native joint line and CPAK classification does not significantly change the outcome of surgery in terms of satisfaction. The dissatisfaction rate of 20% as published by previous researchers may be confounded by other reasons and not just due to changes in alignment and joint line.
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