Where a claimant has preexisting osteoarthritis, which is exacerbated by a work injury, the measurement of the <a href="https://thelomad.com/getmad.today/wp-contentwww.getmad.today/blog/2021/08/using-the-contralateral-limb-as-a-baseline-for-calculating-schedule-loss-of-use/">contralateral extremity should be used as a baseline</a> whenever possible