What is the significance of the articular capsule in joint structure?

The articular capsule plays a crucial role in joint structure by providing stability and support to the joint. This capsule is a fibrous connective tissue envelope that surrounds the joint, forming a protective layer around the articulating bones. Its primary function is to stabilize the joint by ensuring that the bones remain in close proximity, preventing excessive movement that could lead to dislocation or injury.

The capsule also serves to contain synovial fluid, which lubricates the joint and reduces friction, aiding in smooth movement. By holding the bones together, the articular capsule plays a vital role in maintaining the integrity and function of the joint, ensuring that it can withstand various forces exerted upon it during activities ranging from daily movements to athletic endeavors.

Other options highlight functions related to bone health or muscle attachment, but they do not directly address the primary role of the articular capsule in providing joint stability.