Questionnaire and interview contents
| Characteristics | Parameter |
|---|---|
| Questionnaire: | |
| Participant characteristics | Age at incident |
| Gender | |
| Grip side (right or left) | |
| Injury characteristics | When the injury occurred |
| Surgical or non-surgical intervention | |
| Injury side | |
| Other complication | |
| Grip style | Ai-yotsu style or kenka-yotsu style |
| Interview: | |
| Description of the incitement | Judoka's behaviour (attempting the attack, being attacked, or being counterattacked) |
| Injury mechanism (if there was any contact with an opponent when the injury occurred) | |
| Technique that directly caused the injur | |