Social Deprivation as a Risk Factor for Manipulation Under Anesthesia Following Total Knee Arthroplasty

Uma Balachandran; Brocha Z. Stern; Suraj Dhanjani; Jashvant Poeran; Brett L. Hayden; Calin S. Moucha

doi:10.1055/a-2756-0368

The Journal of Knee Surgery, Table of Contents

J Knee Surg
DOI: 10.1055/a-2756-0368

Original Article

Social Deprivation as a Risk Factor for Manipulation Under Anesthesia Following Total Knee Arthroplasty

Authors

Uma Balachandran

¹Leni and Peter W. May Department of Orthopaedic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York, United States
Brocha Z. Stern

¹Leni and Peter W. May Department of Orthopaedic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York, United States

²Institute for Healthcare Delivery Science, Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, New York, United States
Suraj Dhanjani

¹Leni and Peter W. May Department of Orthopaedic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York, United States
Jashvant Poeran

³Department of Anesthesiology, Hospital for Special Surgery, New York, New York, United States
Brett L. Hayden

¹Leni and Peter W. May Department of Orthopaedic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York, United States
Calin S. Moucha

¹Leni and Peter W. May Department of Orthopaedic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York, United States

Abstract

Manipulation under anesthesia (MUA) is an undesirable outcome after total knee arthroplasty (TKA). Black patients have higher odds of MUA than White patients. Social deprivation is also linked to worse TKA outcomes. We examined the associations between an area- and person-level indicator of social deprivation and odds of MUA within 1 year after TKA. This retrospective cohort study included fee-for-service Medicare beneficiaries 65+ (Medicare Limited Data Set, 5% claims) undergoing unilateral inpatient or outpatient primary elective TKA in 2016 to 2020 with an accompanying diagnosis of knee osteoarthritis. Area-level social deprivation was assessed using the county-level Social Deprivation Index (SDI). Person-level social deprivation was operationalized as dual Medicare/Medicaid eligibility. We assessed the relationship between social deprivation and 1-year MUA in separate mixed effects generalized linear models with a binary distribution and logit link. We report adjusted odds ratios (OR) and 95% confidence intervals (CI). Our cohort included 34,749 TKA patients (median age: 73 [interquartile range (IQR): 69–77]; 63.4% women). Median SDI was 42 (IQR: 20–66); 4.7% were dual-eligible. There were 748 cases of MUA (2.2%). Median time to MUA was 63.5 days (IQR: 49–91). Odds of MUA receipt were significantly lower for the most deprived quintile compared with the second most deprived quintile (OR: 0.77; 95% CI: 0.60–0.98; p = 0.04), the middle quintile (OR: 0.76; 95% CI: 0.59–0.99; p = 0.04), and the second least deprived quintile (OR: 0.70; 95% CI: 0.55–0.91; p = 0.01). Dual eligibility wasn't significantly associated with receipt of MUA (OR: 0.74, 95% CI: 0.50–1.10, p = 0.13). There were no significant differences for the person-level indicator of deprivation. The most socially deprived quintile had lower odds of MUA receipt than patients in less socially deprived quintiles. While this could be viewed as a positive, alternatively, it may reflect a challenge with postoperative care access and should be further examined.

Keywords

MUA - TKA - social deprivation - social determinants of health - access to care

Full Text

References

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