Study of 9611 pts w/ hip or knee arthroplasty for #OA tested aspirin (100 mg/d) vs enoxaparin (40 mg/d) (x35d w/THA; 14d after TKA). Enrollment prematurely halted as VTE rate was 3.45% w/ ASA and 1.8% w/ enoxaparin (superior to ASA: P= .007) https://t.co/jvuely8L56 https://t.co/O1TxCjaSPU