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Immigrant Communities Do Not Impact TKA Outcomes

BMC Musculoskelet Disord; ePub 2019 Feb 9; Mehta, et al

Patients living in high (≥40%) immigrant proportion (IP) neighborhoods do not have worse pre-op or 2-year post-op pain and function outcomes after total knee arthroplasty (TKA) compared to those living in low (< 10%) IP neighborhoods, a recent study found. Although sex differences favoring males are notable, these differences are not associated with IP. Patients in a high volume institutional TKA registry between May 2007 and February 2011 were retrospectively analyzed. Demographics, pre-op, and 2-year post-op Western Ontario McMaster Universities Osteoarthritis Index (WOMAC) pain and function scores, and geocodable addresses were obtained. Patient-level variables were linked to US Census Bureau census tract data. The effect of patient and neighborhood-level factors on WOMAC scores were analyzed using linear mixed effects models. Researchers found:

  • 3,898 TKA patients were analyzed.
  • Pre-op and 2-year post-op WOMAC pain and function scores were between 2.75–4.88 WOMAC points worse in neighborhoods with a high IP (≥ 40%) compared to low IP (< 10%).
  • In multivariable analyses, these differences were not statistically significant.
  • Women had worse pre-op and 2-year post-op WOMAC scores, but this difference was not influenced by neighborhood IP.

Mehta B, Szymonifka J, Dey S, et al. Living in immigrant communities does not impact total knee arthroplasty outcomes: Experience from a high-volume center in the United States. [Published online ahead of print February 9, 2019]. BMC Musculoskelet Disord. doi:10.1186/s12891-019-2446-y.