Table 2 Clinical grading systems for muscle injuries
From: Imaging of hip and thigh muscle injury: a pictorial review
Name of classification | Year | Focus (if any) | Number of grades used |
|---|---|---|---|
O’Donoghue | 1962 | – | 3 |
Ryan | 1969 | Quadriceps (initially) | 4 |
Takebayashi | 1995 | Ultrasound | 3 |
Peetrons | 2002 | Ultrasound | 3 |
Stoller | 2007 | MRI | 3 |
Munich | 2012 | MRI | 4 + contusions |