Needs review
Source: Homebrew

Description: You learn how to break your opponents limbs while grappling

Prerequisites: Improved Grapple, Base Attack Bonus +5

If you succesfully pin a target in a grapple, you may take a full round action to break their limb. Roll 1d20+ double your strength mod versus the opponents Strength check (d20+STR mod), on a success you deal 1d4 STR damage