ArticleJournal of clinical orthopaedics and trauma2025
Pre-operative planning with X-PSI™ compared to MRI-based patient-specific instrumentation in total knee arthroplasty.
Article in Journal of clinical orthopaedics and trauma, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Purpose: X-ray-based patient-specific instrumentation (PSI) for total knee arthroplasty (TKA) is a new method for preoperative planning of TKA. This study presents the preliminary experiences with preoperative planning of TKA, comparing Zimmer Biomet's X-PSI™ with MRI-based planning for patient-specific instrumentation (PSI). Methods: One high-volume experienced orthopedic surgeon modified and approved preoperative X-PSI™ and MRI-based PSI planning of 20 patients. Absolute differences in individual subjects of the planning by both modalities were evaluated for the following parameters: femoral- and tibial implant size, femoral resection (medial-distal, lateral-distal, medial-posterior, and lateral-posterior), tibial resection (medial and lateral), femoral flexion-extension angle, femoral- and tibial varus/valgus angle, posterior slope tibia, tibial rotation, and femoral- and tibial rotation. Results: The planned implant size was within one size difference between X-PSI™ and MRI-based planning of the same patient in 95 % of cases for femoral implant size and 90 % of the cases for tibial implant size. Furthermore, femoral resection levels were more comparable between both imaging modalities, whereas more variation was seen between planned tibial resection levels. Conclusion: This study presents a high agreement between X-PSI™ and MRI-based PSI in implant sizing and femoral resection levels, based on measurements within the same individuals, with greater variability observed in tibial resection. Further research is needed to validate and optimise PSI for TKA.
Indexed as
Identifiers
What 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.