ArticleArthroplasty today2026
Patient Expectations for Patient-reported Outcomes After Total Knee Arthroplasty Surpass Actual Outcomes and Correlate With Dissatisfaction.
Article in Arthroplasty today, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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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.
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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.
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Unmet patient expectations are associated with dissatisfaction after total knee arthroplasty (TKA). No prior studies have quantified patient expectations using the same patient-reported outcome (PRO) metrics used to evaluate postoperative outcomes and minimal clinically important differences (MCIDs). Methods: Baseline PROs were collected for 64 patients undergoing primary TKA using PROMIS Physical Function (PF), PROMIS Pain Interference (PI), Knee Injury and Osteoarthritis Outcome Score-12 (KOOS-12), and Veteran's RAND-12 Mental and Physical Component Scores (VR-12 MCS, PCS). Patients reported their expected 12-month postoperative PRO scores preoperatively. Actual 12-month PROs and satisfaction were recorded postoperatively. Expected and actual changes in PROs (ΔPROs) were compared with MCIDs and with each other. Associations between expectations, outcomes, and satisfaction were evaluated using point-biserial correlations. Results: Patients (mean age 66.3 SD 9.3 years; BMI 31.1 SD 5.6; 54.7% female) expected improvements exceeding MCIDs for all PROs except VR-12 MCS ( Conclusions: Patients undergoing TKA commonly expect improvements exceeding both MCIDs and actual postoperative outcomes. Larger expectation-outcome discrepancies were associated with postoperative dissatisfaction, highlighting the importance of aligning patient expectations with realistic outcomes during preoperative counseling.
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