Table 3

Proportion of primary TKA recipients with specific complications, after matching

Surgeon volume
<70 cases/year		Surgeon volume≥70 cases/yearHazard Ratio (HR)*McNemar test (p value)
Complication (N (%))
 Revision (for all causes) within 3 years1153 (2.23%; 95% CI 1.39 to 3.09)880 (1.70%;
95% CI 0.85 to 2.55)		1.33 (95% CI 1.21 to 1.47)<0.0001
 Deep infection requiring surgery within 3 years668 (1.29%;
95% CI 0.44 to 2.14)		566 (1.09%;
95% CI 0.24 to 1.94)		1.33 (95% CI 1.17 to 1.51)<0.0001

  • *Stratified by hospital where the surgery was performed.

  • TKA, total knee arthroplasty.