Table 1

Rugby-specific variables recorded for 36 ACL injury cases analysed using systematic video analysis

CasePrecipitationPlaying situationField locationPlayer actionContest typeIf tackled what directionPlayer contact preceding injuryPlayer contact at injuryTime in matchInjured knee
Offensive running
 #1NoOffenceMidfield ZoneSidestepNot being tackledNoNo61–80Left
 #2NoOffenceOffensive thirdPassingNot being tackledNoNo61–80Right
 #5NoOffenceOffensive thirdSidestepNot being tackledNoNo21–40Right
 #6NoOffenceOffensive thirdSidestepNot being tackledNoNo41–60Right
 #7NoOffenceOffensive thirdSidestepNot being tackledNoNo41–60Right
 #10UnsureOffenceOffensive thirdStoppingRunningNoNo1–20Left
 #11UnsureOffenceOffensive thirdSidestepNot being tackledNoNo41–60Right
 #12UnsureOffenceMidfield zoneSidestepNot being tackledNoNo1–20Left
 #13NoOffenceMidfield ZoneSidestepNot being tackledNoNo61–80Right
 #15YesOffenceDefensive thirdNo possessionRunningYes—indirectNo21–40Right
 #36NoOffenceDefensive thirdSidestepNot being tackledNoNo61–80Right
Defensive running
 #4NoDefenceMidfield zoneSidestepRunningNoNo61–80Right
 #14UnsureDefenceDefensive thirdSidestepNot tacklingNoNo61–80Left
 #17NoDefenceDefensive thirdCross-over cutNot tacklingNoNo61–80Right
Set play
 #3NoSet playMidfield zoneSingle leg landingCompeting for high ballYes—indirectNo1–20Left
Rucking
 #8NoOffenceDefensive thirdNo possessionRuckingYes—indirectYes—direct61–80Left
 #9NoDefenceOffensive thirdNo possessionRuckingYes—indirectyes -indirect61–80Left
 #18YesDefenceMidfield zoneNo possessionRuckingYes—indirectYes—indirect21–40Left
 #34UnsureDefenceMidfield zoneNo possessionRuckingYes—indirectYes—direct61–80Right
Tackling
 #22NoDefenceDefensive thirdNo possessionTacklingYes—indirectYes—indirect61–80Left
 #23NoDefenceDefensive thirdNo possessionTacklingYes—indirectYes—indirect21–40Right
 #24NoDefenceMidfield zoneNo possessionTacklingYes—indirectYes—direct1–20Left
 #29NoDefenceMidfield zoneNo possessionTacklingNoYes—indirect1–20Right
 #33NoDefenceOffensive thirdNo possessionTacklingYes—indirectYes21–40Right
Tackled
 #19NoOffenceOffensive thirdOtherTackledSide—above waistYes—indirectYes—indirect1–20Right
 #20NoOffenceOffensive thirdOtherTackledFront—below waistYes—indirectYes1–20Left
 #21NoOffenceMidfield zoneRunningTackledBehind—below waistYes—indirectYes—direct21–40Left
 #25NoOffenceMidfield zoneSidestepTackledFront and side—above waistYes—indirectYes—direct61–80Right
 #26UnsureOffenceOffensive thirdReceivingTackledBehind and side—above and belowYes—indirectYes—direct1–20Right
 #27NoOffenceOffensive thirdSidestepTackledSide and below waistYes—directYes—direct61–80Left
 #28unsureOffenceDefensive thirdReceivingTackledFront and above waistYes—indirectYes—indirect21–40Left
 #32UnsureOffenceMidfield zoneReceivingTackledFront and side—above waistYes—indirectYes—direct1–20Right
 #35YesOffenceOffensive thirdSidestepTackledBehind—above waistYes—indirectYes—indirect1–20Right
Kicking
 #30NoOffenceDefensive thirdKickingCollisionSide and belowNoYes—direct61–80Right
Set play
 #31YesSet playDefensive thirdScrumScrumYes—indirectYes—direct61–80Right
Other
 #16UnsureDefenceDefensive thirdNo possessionUnsureUnsureUnsure61–80Left