Fig. 2From: Reconstruction with a double-constrained implant design after complex shoulder extra-articular resectionScheme of the constrained shoulder joint replacement loading. A In single ball joint configuration, the force F is transmitted directly through the joint, induces torque T that pull off anchoring cortical screw. B In double bearing configuration, the loading force F is compensated by deformation of soft tissue, and torque loading of glenoidal component is considerably reducedBack to article page