Fibrous layer of synovial bursa

The fibrous layer of synovial bursa forms the outer wall of the bursa and consists of dense connective tissue. It provides mechanical strength, maintains the shape of the bursa, and anchors it to surrounding structures such as fascia, bone, or tendon. It is usually continuous with the deep fascia or periosteum nearby, giving the bursa its stability.

The fibrous layer is different from the The synovial layer, which forms the inner lining of the bursa and is composed of vascular connective tissue lined by synoviocytes that produce synovial fluid inside the bursa.

Summary

The synovial layer of a bursa has parietal and visceral portions, creating a closed lubricated cavity, while the fibrous layer is the tough outer wall that provides mechanical strength and anchorage. Together, they allow smooth, low-friction movement between structures subjected to mechanical stress.