Association between weekday of surgery and length of hospital stay among patients undergoing primary total knee arthroplasty in Singapore: a secondary analysis based on a retrospective cohort study

Midweek TKA scheduling, particularly on Thursday, optimizes postoperative efficiency in Singapore's healthcare system. The nonlinear temporal patterns and subgroup-specific effects underscore the importance of institutional resource alignment and personalized scheduling. These findings advocate the integration of weekday-based protocols into fast-track arthroplasty programs, especially for patients undergoing general anesthesia.