The Changing Characteristics of Arthroplasty Patients: Study
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Total joint arthroplasty (TJA) is among the most common operations performed worldwide, with global volumes on the rise. The purpose of this study was to examine how this patient population has changed between 2003 and 2017.

A retrospective review of a prospective TJA database was conducted. Age, sex, body mass index (BMI), comorbidities, American Society of Anesthesiologists (ASA) class, responsible diagnoses, and comorbidities were compared over five-year intervals. All patients undergoing primary, elective TJA were included. Overall, 17,138 TJAs were included.

Results:
--Mean BMI increased over the study period for THA (29.4 to 30.4 kg/m2) and TKA (32.0 to 33.1 kg/m2) patients.

--THA patients were significantly younger in more recent years (68.0 to 66.8 years old); this trend was not observed among TKA patients.

--Over the study period, a significantly higher proportion of patients were ASA Class III/IV for THA (50.5% to 72.3%) and TKA (57.5% to 80.7%).

--Prevalence of common comorbidities did not change significantly.

Conclusively, the patients undergoing TJA are becoming younger and more obese. It is unclear whether patients are becoming more medically complex. These trends paint a concerning picture of a population that is increasingly complex, and may require a greater allocation of resources in the future.

Source: https://www.sciencedirect.com/science/article/abs/pii/S0883540321002114?dgcid=rss_sd_all
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