SynthesisKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2026
There is no standardised measurement approach for medial proximal tibial angle after unicompartmental knee arthroplasty: A systematic review.
Synthesis in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2026. 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
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeUnicompartmental knee arthroplasty (UKA) is increasingly used for isolated knee osteoarthritis. The medial proximal tibial angle (MPTA) is important for describing tibial alignment. However, MPTA measurement after UKA is challenging because one tibial compartment is prosthetic. This systematic review evaluated the measurement of MPTA after UKA, summarised methodological variability, and assessed the quality and reliability of the reported methods.
methodsPubMed, Embase, Web of Science, and Scopus were searched. Eligible original studies reported radiographic MPTA measurement techniques in patients who underwent UKA. Two reviewers independently screened, extracted data, and assessed study quality using the Newcastle-Ottawa Scale. Due to methodological heterogeneity, a qualitative narrative synthesis was conducted.
resultsTwenty-three studies met the inclusion criteria, encompassing 4,075 patients and one cadaveric study with 26 specimens. Measurement reporting was heterogeneous and often incomplete: 12 studies did not specify their MPTA technique. Among the described approaches, three standard methods emerged: (1) using the tibial component coronal angle (TCA) as a proxy for MPTA, (2) connecting the proximal medial point of the prosthesis to a lateral native tibial landmark (medial-to-lateral joint line), and (3) the Cartier-type angle. Reliability reporting was limited: only six studies reported both inter- and intra-observer reliability with specific statistical measures, three reported inter-observer reliability only, three stated dual assessors without metrics, and eleven reported no reliability data.
conclusionsThere is no standardised and validated method for MPTA measurement after UKA. Heterogeneity in landmarks and reliability reporting undermines the comparability of results across studies. A standardised and validated measurement approach for MPTA after UKA is urgently needed. LEVEL OF EVIDENCE: Level III.
Indexed as
Identifiers
What Socratic 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 Socratic graph.