Posterior cruciate ligament (PCL) injury frequency and incidence
| Season | Player matches* | Player-hours | Estimated centre bounces | No of PCL injuries (matches only) | PCL injuries with centre bounce ruck duel mechanism | Incidence (total) of PCL injuries per 10 000 player-hours | Incidence (centre bounce) of injuries per 10 000 player-hours | Incidence (all other causes) of PCL injuries per 10 000 player-hours | Incidence of PCL injuries per 10 000 centre bounces |
| 1992 | 5922 | 7896 | 5633 | 9 | 0 | 11.4 | 0.0 | 11.4 | 0.0 |
| 1993 | 5382 | 7176 | 5143 | 8 | 1 | 11.1 | 1.4 | 9.8 | 1.9 |
| 1994 | 5994 | 7992 | 5231 | 9 | 1 | 11.3 | 1.3 | 10.0 | 1.9 |
| 1995 | 6372 | 8496 | 5557 | 11 | 1 | 12.9 | 1.2 | 11.8 | 1.8 |
| 1996 | 6372 | 8496 | 5574 | 10 | 0 | 11.8 | 0.0 | 11.8 | 0.0 |
| 1997 | 6372 | 8496 | 5341 | 10 | 0 | 11.8 | 0.0 | 11.8 | 0.0 |
| 1998 | 6372 | 8496 | 5516 | 6 | 0 | 7.1 | 0.0 | 7.1 | 0.0 |
| 1999 | 6372 | 8496 | 5641 | 16 | 2 | 18.8 | 2.4 | 16.5 | 3.5 |
| 2000 | 6372 | 8496 | 6076 | 8 | 4 | 9.4 | 4.7 | 4.7 | 6.6 |
| 2001 | 6372 | 8496 | 5752 | 14 | 2 | 16.5 | 2.4 | 14.1 | 3.5 |
| 2002 | 6372 | 8496 | 5620 | 7 | 4 | 8.2 | 4.7 | 3.5 | 7.1 |
| 2003 | 6372 | 8496 | 5601 | 8 | 2 | 9.4 | 2.4 | 7.1 | 3.6 |
| 2004 | 6372 | 8496 | 5516 | 13 | 5 | 15.3 | 5.9 | 9.4 | 9.1 |
| 2005 | 6372 | 8496 | 5617 | 5 | 1 | 5.9 | 1.2 | 4.7 | 1.8 |
| 2006 | 6372 | 8496 | 5465 | 5 | 0 | 5.9 | 0.0 | 5.9 | 0.0 |
| 2007 | 6372 | 8496 | 5607 | 3 | 0 | 3.5 | 0.0 | 3.5 | 0.0 |
| 2008 | 6372 | 8496 | 5732 | 7 | 1 | 8.2 | 1.2 | 7.1 | 1.7 |
*Excluded last match played in season.