Observational studyArchives of orthopaedic and trauma surgery2025
Obstructive sleep Apnoea in patients with knee osteoarthritis before total knee arthroplasty and its impact on post-operative recovery of blood oxygen concentrations.
Observational study in Archives of orthopaedic and trauma surgery, 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
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionPost-operative delays in blood oxygen recovery are sometimes observed after total knee arthroplasty (TKA), with obstructive sleep apnoea (OSA) being a contributing factor. This study aimed to examine the prevalence of OSA and its correlation with post-operative oxygen saturation (SpO2) recovery in patients undergoing TKA for knee osteoarthritis (OA). MATERIALS AND
methodsThis was an observational case-control study including patients with knee OA who underwent TKA between January 2018 and October 2021. Pre-operative symptoms of OSA were assessed, and the apnoea-hypopnoea index, 3% oxygen desaturation index (ODI), average SpO2 and sleep body positions were measured using sleep testing devices. Knee function was evaluated using the 2011 Knee Society Score and range of motion (ROM).
resultsA total of 240 patients (41 males and 199 females) with a mean age of 74 years (range 51-93 years) were included in this study. Of the 240 patients, 49 (20.4%) had no OSA, 104 (43.3%) had mild OSA and 87 (36.3%) had moderate to severe OSA. OSA severity increased with a higher body mass index. Diabetes prevalence increased as the severity of OSA increased. OSA severity did not affect pre-operative knee function scores or ROM. However, higher ODI and lower pre-operative SpO2 were associated with increased OSA severity. Additionally, patients with severe OSA exhibited a greater proportion of supine sleep time and delayed post-operative oxygen discontinuation.
conclusionsPatients with knee OA scheduled for TKA have a high prevalence of OSA. Increased OSA severity delay oxygen discontinuation after TKA.
Indexed as
Identifiers
40080185What 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.