Key Features :

• Structural Reinforcement: Knee joints are engineered to support axial or inclined connections against loads to avert destruction of the given structure. 
• Material and Design: Made of steel, aluminium or high-strength metals, these knee joints may be welded, bolted or riveted to suit the applications and loading conditions.
• Most Common Applications: Structures, therefore, within buildings (roof trusses, bracing system), machines (metal frames, moving arms), and bridges (support brackets, reinforcements). 

Knee joints are thereby very essential in adding strength to structures for durability and load-bearing capacity. They give extra support to roof trusses and industrial frames for safety and stability. For example, in moving mechanical systems, they facilitate motion and load-sharing in articulated structures. In modern engineering applications, advancements in fabrication technologies including precision welding and CNC machining are increasing the strength and efficiency of knees.