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Main characteristics of the muscle injuries: site affected and type of contraction at time of injury.
| Limb affected | |
|---|---|
| Lower | 97% |
| Upper | 3% |
| Muscle grouping | |
| Quadriceps | 30% |
| Thigh adductors | 28% |
| Sural triceps | 21% |
| Hamstrings | 16% |
| Biceps brachialis | 3% |
| Others | 2% |
| Type of contraction | |
| Eccentric | 62% |
| Concentric | 30% |
| Isometric | 3.50% |
| Not known | 4.50% |
| Region affected | |
| Muscle–tendon junction | 53% |
| Muscle body | 45% |
| Bone avulsion | 2% |
