Type1 | SPR is elevated from the lateral malleolus and FCR, but SPR is still attached to the periosteum of the fibula |
Type2 | SPR is torn free from its attachment to the lateral malleolus |
Type3 | A small fragment of the bone is avulsed at the attachment of the SPR |
Type4 | SPR is torn from its posterior attachment and is usually lying deep to the tendon |