its actually like a hydraulic cushion , with a self renewable matrix between the bones. we are close to mimicking tissue renewal with some of the recent materia

its actually like a hydraulic cushion , with a self renewable matrix between the bones. we are close to mimicking tissue renewal with some of the recent materials advances. https://en.wikipedia.org/wiki/Shoulder_joint https://en.wikipedia.org/wiki/Shoulder_joint https://en.wikipedia.org/wiki/Self-healing_material https://en.wikipedia.org/wiki/Self-healing_material