This study presents the design and development of a large deflection single degree of freedom compliant rotary joint. The constrained motion in this joint is achieved by parallel combination of two flat sheets attached in orthogonal orientation. The joint is developed using constraint line approach. Stiffnesses are calculated using linear elastic beam theory and torsion theory. The stiffness achieved in the compliant rotation is 0.1699 Nm/rad, whereas other stiffnesses are very high. The calculated stiffness is validated using finite element analysis. A model is fabricated to demonstrate large deflection-constrained motion.