Actor Clark Middleton has spent a lifetime defying the limits of arthritis. Diagnosed with the disease at age 4, he quickly learned the importance of being independent. Having had 10 joints replaced – including both knees and hips, a shoulder and an elbow – Clark sought solace in theater, channeling emotions from his own experiences into acting. He’s appeared on stage, in numerous TV and film roles, including the “Twin Peaks: The Return” series, and coaches other actors. Also starring on NBC’s “The Blacklist,” Hulu’s “The Path” and this year in “The Iceman Cometh” on Broadway with Denzel Washington, Clark advocates for others with arthritis, and he has actively participated in the Arthritis Foundation’s Advocacy Summit and Arthritis Support Network events.