Table 5

Frontal and transverse plane metrics of non-contact or indirect contact ACL injuries, stratified according to main situational patterns (data on 107 cases)

VariablesTotalPressingTackledKickingLandingOther
Trunk tilt IC5 (−35, 35)10 (−5, 30)10 (−10, 20)0 (−35, 30)7.5 (−5, 35)−2.5 (−15, 20)
(+ ipsilateral, − contralateral)
Trunk tilt IF5 (−20, 50)17.5 (−5, 90)10 (−15, 35)0 (−20, 50)0 (−15, 40)−2.5 (−15, 10)
(+ ipsilateral, − contralateral)
Trunk rotation IC
 Towards injured6 (6%)4 (8%)1 (4%)1 (7%)0 (0%)0 (0%)
 Neutral35 (34%)14 (28%)7 (32%)6 (40%)2 (25%)6 (75%)
 Towards uninjured55 (53%)28 (56%)11 (50%)8 (53%)6 (75%)2 (25%)
 Unsure7 (7%)4 (8%)3 (14%)0 (0%)0 (0%)0 (0%)
Trunk rotation IF
 Towards injured5 (5%)4 (8%)1 (4,3)0 (0%)0 (0%)0 (0%)
 Neutral8 (8%)2 (4%)1 (4,3%)3 (20%)1 (12.5%)1 (12.5%)
 Towards uninjured86 (83%)40 (80%)20 (87%)12 (80%)7 (87.5%)7 (87.5%)
 Unsure5 (5%)4 (8%)1 (4,3%)0 (0%)0 (0%)0 (0%)
Frontal plane hip alignment IC
 Abduction91 (88%)46 (92%)18 (82%)13 (87%)7 (87.5%)7 (87.5%)
 Neutral7 (7%)2 (4%)2 (9%)1 (7%)1 (12.5%)1 (12.5%)
 Adduction0 (0%)0 (0%)0 (0%)0 (0%)0 (0%)0 (0%)
 Unsure5 (5%)2 (4%)2 (9%)1 (7%)0 (0%)0 (0%)
Frontal plane hip alignment IF
 Abduction74 (72%)39 (78%)15 (68%)11 (73%)6 (75%)3 (37.5%)
 Neutral15 (15%)5 (10%)2 (9%)3 (20%)2 (25%)3 (37.5%)
 Adduction8 (8%)3 (6%)3 (14%)0 (0%)0 (0%)2 (25%)
 Unsure6 (6%)3 (6%)2 (9%)1 (7%)0 (0%)0 (0%)
Frontal plane knee alignment IC
 Valgus28 (27%)13 (26%)8 (35%)3 (20%)2 (25%)2 (25%)
 Neutral66 (63%)32 (64%)12 (52%)10 (67%)6 (75%)6 (75%)
 Varus2 (2%)0 (0%)1 (4%)1 (7%)0 (0%)0 (0%)
 Unsure8 (8%)5 (10%)2 (9%)1 (7%)0 (0%)0 (0%)
Frontal plane knee alignment IF
 Valgus83 (81%)43 (86%)19 (86.4%)10 (67%)4 (50%)7 (87.5%)
 Neutral9 (9%)3 (6%)1 (4.5%)2 (13%)3 (37.5%)0 (0%)
 Varus4 (4%)1 (2%)1 (4.5%)1 (7%)1 (12.5%)0 (0%)
 Unsure7 (7%)3 (6%)1 (4.5%)2 (13%)0 (0%)1 (12.5%)
Foot position IC
 External61 (59%)30 (60%)13 (59%)11 (73%)2 (25%)5 (62.5%)
 Neutral18 (17%)11 (22%)2 (9%)1 (7%)4 (50%)0 (0%)
 Internal5 (5%)1 (2%)2 (9%)1 (7%)0 (0%)1 (12.5%)
 Unsure19 (18%)8 (16%)5 (23%)2 (13%)2 (25%)2 (25%)
Foot position IF
 External68 (66%)34 (68%)15 (68%)11 (73%)4 (50%)4 (50%)
 Neutral10 (10%)7 (14%)0 (0%)1 (7%)2 (25%)0 (0%)
 Internal6 (6%)2 (4%)2 (9%)1 (7%)1 (0%)1 (12.5%)
 Unsure19 (18%)7 (14%)5 (23%)2 (13%)2 (25%)3 (37.5%)
Significant hip IR/ADD from IC to IF?
 Yes71 (69%)36 (72%)16 (73%)10 (67%)3 (37.5%)6 (75%)
 No20 (19%)6 (12%)4 (18%)3 (20%)5 (62.5%)2 (25%)
 Unsure12 (12%)8 (16%)2 (9%)2 (13%)0 (0%)0 (0%)
Valgus collapse?
 Yes13 (13%)7 (14%)4 (18%)1 (7%)0 (0%)1 (12.5%)
 No86 (83%)41 (82%)18 (82%)13 (87%)7 (87.5%)7 (87.5%)
 Unsure4 (4%)2 (4%)0 (0%)1 (7%)1 (12.5%)0 (0%)
  • Four injuries had incomplete biomechanical data on the frontal plane.

  • ADD, adduction; IC, initial contact; IF, injury frame; IR, internal rotation.