Needs review
Source: Homebrew

Description: You can break your opponents limbs from even the most innocuous of strikes

Prerequisites: Improved Grapple, Improved Armbar, Base Attack Bonus +15

If you make a successful melee touch attack against a target, 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