ArticleEuropean journal of orthopaedic surgery & traumatology : orthopedie traumatologie2020
Preliminary experience with an image-free handheld robot for total knee arthroplasty: 77 cases compared with a matched control group.
Article in European journal of orthopaedic surgery & traumatology : orthopedie traumatologie, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04525950 (Robotized Computer Navigation Versus Conventional Technique in Total Knee Replacement. A Randomized, Clinical and Radiostereometric Trial.), which is not on this map. Cited by 43 papers, 5 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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.
Robotized Computer Navigation Versus Conventional Technique in Total Knee Replacement. A Randomized, Clinical and Radiostereometric Trial.
Who cites it
43 citing papers in PubMed, 5 syntheses or guidelines pooled it.
- Systematic review and meta-analysis of economic and healthcare resource utilization outcomes for robotic versus manual total knee arthroplasty.Journal of robotic surgery · 2023Pooled it
- The evolution of robotic systems for total knee arthroplasty, each system must be assessed for its own value: a systematic review of clinical evidence and meta-analysis.Archives of orthopaedic and trauma surgery · 2023Pooled it
- Complications and downsides of the robotic total knee arthroplasty: a systematic review.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Pooled it
- Robotic-assisted knee arthroplasty: an evolution in progress. A concise review of the available systems and the data supporting them.Archives of orthopaedic and trauma surgery · 2021Pooled it
- Robotic-assisted total knee arthroplasty is comparable to conventional total knee arthroplasty: a meta-analysis and systematic review.Archives of orthopaedic and trauma surgery · 2020Pooled it
- Improved accuracy of functional alignment restoration with robotic-assisted total knee arthroplasty : A quasi-randomized controlled trial.Orthopadie (Heidelberg, Germany) · 2026Trial
- Early Radiographic and Clinical Outcomes of Robotic-arm-assisted versus Conventional Total Knee Arthroplasty: A Multicenter Randomized Controlled Trial.Orthopaedic surgery · 2024Trial
- Improved accuracy of implant placement with an imageless handheld robotic system compared to conventional instrumentation in patients undergoing total knee arthroplasty: a prospective randomized controlled trial using CT-based assessment of radiological outcomes.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Trial
- Computer-Assisted Orthopedic and Trauma Surgery.Deutsches Arzteblatt international · 2020Trial
- Embodied artificial intelligence in robotic orthopaedic surgery: from intelligent assistance to adaptive surgical autonomy.Journal of robotic surgery · 2026Review
- Increased medial component gap at 30° flexion is associated with subjective instability and worse patient-reported outcomes after image-free robot-assisted total knee arthroplasty.Journal of experimental orthopaedics · 2026Article
- A case series of robotic TKA in stiff knees using the imageless CORI system: technical strategies and early functional results.Musculoskeletal surgery · 2026Article
- Novel Application of an Imageless Robotic System in Revision Total Knee Arthroplasty: Unicompartmental Knee Arthroplasty Conversion, 1-Stage Revision, and 2nd-Stage Revision.The international journal of medical robotics + computer assisted surgery : MRCAS · 2026Article
- Article
- Discrepancy between predicted and actual soft tissue balance in robot-assisted total knee arthroplasty.Journal of orthopaedics · 2025Article
- Image-free robotic-assisted total knee arthroplasty is associated with joint line distalization and improves mid-flexion instability: A prospective cohort study.Journal of experimental orthopaedics · 2025Article
- Femoral resection accuracy and precision in manual caliper-verified kinematic alignment total knee arthroplasty.Journal of experimental orthopaedics · 2025Article
- Novel application of an imageless robotic system in simultaneous unicompartmental knee arthroplasty and anterior cruciate ligament reconstruction.Asia-Pacific journal of sports medicine, arthroscopy, rehabilitation and technology · 2025Article
- Reliability of pre-resection ligament tension assessment in imageless robotic assisted total knee replacement.Arthroplasty (London, England) · 2024Article
- Robotic-Assisted Total Knee Arthroplasty in Obese Patients.Arthroplasty today · 2024Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundAchieving an optimal limb alignment is an important factor affecting the long-term survival of total knee arthroplasty (TKA). This is the first study to look at the limb alignment and orientation of components in TKA using a novel image-free handheld robotic sculpting system.
methodsThis case-controlled study retrospectively compared limb and component alignment of 77 TKAs performed with a robot (Robot-group) with a matched control group of patients who received conventional alignment with intramedular rods (Control group). Alignment and component positioning was measured on full-leg weight-bearing and standard lateral X-rays by two independent observers. The image-free handheld robotic sculpting system calculated the planned and achieved mechanical axis (MA). Outliers were defined as > 3° deviation from planned alignment.
resultsMean MA was 180.1° (SD = 1.9) in the Robot-group, compared to the Control group with a mean MA of 179.1° (SD = 3.1, p = 0.028). We observed 5 outliers (6%) in the Robot-group and 14 outliers (18%, p = 0.051) in the Control group. Fraction of outliers of the frontal tibial component was 0% in the Robot-group versus 8% in the Control group (p = 0.038). There were no other statistical differences regarding the implant positioning between both groups.
conclusionThe Robot-group showed significantly less outliers compared to the conventional technique. Whether these differences are clinically relevant is questionable and should be investigated on the long term. Randomized controlled trials with larger patient series will be needed in the future to confirm our preliminary results.
Indexed as
Identifiers
31950265What OpenQuestion holds
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.