ArticlePloS one2026
Incidence and factors associated with reoperation after rotator cuff repair in Korea: A nationwide cohort study.
Article in PloS one, 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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Abstract
introductionWith the growing interest in rotator cuff repair (RCR), substantial evidence on factors associated with reoperation is crucial for decision-making. This retrospective longitudinal cohort study aimed to investigate the rate of rotator cuff reoperation after repair in Korea and identify factors associated with reoperation while considering the medical services implemented in Korea using the Korean National Health Insurance Database from 2011 to 2021.
methodsReoperation rates in patients who underwent RCR during a 3.5-year follow-up period were analyzed using Kaplan-Meier analysis. Pre-, intra-, and post-operative factors were analyzed using Cox proportional hazards regression model analyses.
resultsThis study included 221,361 patients, among whom 15,089 (6.82%) underwent rotator cuff reoperation during the follow-up period, reflecting mid- to long-term reoperation (6 months to 3.5 years after surgery), rather than overall surgical failure. Sex, age, health insurance type, healthcare institution type, comorbidities, primary RCR type, arthroscopy use, primary diagnosis of primary RCR, and time to the first outpatient visit for Korean medicine healthcare or conventional medical healthcare were associated with rotator cuff reoperation.
conclusionOur results may help perioperative decision-making and postoperative management strategies related to reoperation risk, while considering patient characteristics, and may support counselling regarding the timing of postoperative care.
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