Table 2: Classification of Proximal Hamstring Injuries.
|Level of Injury|
|Type 1||Osseous avulsions (generally seen in pediatric patients)|
|Type 2||Avulsions at the muscular-tendinous junction|
|Type 3||Incomplete tendon avulsions|
|Type 4||Complete avulsions with no/minimal retraction|
|Type 5a||Complete avulsions with retraction but NO sciatic nerve involvement|
|Type 5b||Complete avulsions with retraction AND sciatic nerve involvement|