Table 5

Outcomes following primary anterior cruciate ligament (ACL) reconstructions

DenmarkLuxembourgNorwaySwedenUKUS
Total N21 82030017 55630 422297228 055
Ipsilateral knee reoperations*, n (%)1419 (6.5)657 (3.7)1640 (5.8)
Contralateral knee operations†, n (%)5 (1.7)457 (2.6)921 (3.0)850 (3.0)
Revisions, n10020762975941
Cumulative revision probability (years), % (95% CI)
 1 0 (0.0–0.0)0.9 (0.7–1.1)0.6 (0.5–0.7)1.0 (0.8–1.1)
 3 3.6 (3.2–4.0)2.8 (2.6–3.0)3.7 (3.4–3.9)
 7 5.6 (5.2–6.0)4.1 (3.6–4.5)6.1 (5.7–6.6)
Revision incidence density (years), 100 person-years
 1 0.00.90.60.9
 3 1.21.01.2
 7 0.90.81.1
  • *Non-revision operations in the index knee following the primary ACL reconstruction.

  • †Operations/reconstructions on the contralateral knee following the primary ACL reconstruction.

  • –, not reported.