Mean age, yr | 60.9 | 69.6* |
Follow-up, yr | 2.8 | 2.4 |
Male sex, % | 61.1 | 38.0† |
Diagnosis not osteoarthritis, % | 33.3 | 8.8* |
Comorbid conditions > 1, % | 11.1 | 3.2§ |
Mean hospital volume, no./yr | 106.8 | 143.9 |
Mean surgeon volume, no./yr | 38.5 | 49.5 |
Mean length of hospital stay, d | 13.1 | 10.3† |
Complication present at index admission, % | 22.2 | 10.3 |
Revision within 4 yr, % | 5.6 | 2.0 |
Fusion or re-fusion within 4 yr, % | 11.1 | 0.1‡ |
Excision within 4 yr, % | 16.7 | 0.8‡ |
Patellar replacement or patelloplasty. % | 27.8 | 85.3‡ |
Infection within 4 yr, % | 11.1 | 2.2 |
Urinary tract infection at index admission, % | 5.6 | 2.0 |
Deep venous thrombosis within 3 mo of index admission, % | 5.6 | 2.6 |