Anatomy of a healthy joint

Healthy knee joint, with detail showing synovial membrane and fluid, ligament, cartilage, and bone

The synovial membrane lines the joint and produces synovial fluid to cushion the movement of the joint.

Current as of: May 1, 2026

Author: WebMD Ignite Staff
Clinical Review Board
All WebMD Ignite education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

Current as of: May 1, 2026

Author: WebMD Ignite Staff

Clinical Review Board
All WebMD Ignite education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.