ICD-11 definition : Primary osteoarthritis occurring in an otherwise intact knee joint, involving genetically
related, age-related or use-related degeneration with microscopic and macroscopic
anatomical changes, which ultimately limit motion in one or more joints. Changes to
the joint include increasing cartilage loss and osseous transformation such as sclerosis,
osteophyte formation and cysts as well as potential inflammatory changes in surrounding
soft tissue structures.;
ICD-11 synonym : osteoarthrosis of knee; degenerative knee disease; gonarthrosis;
Primary osteoarthritis occurring in an otherwise intact knee joint, involving genetically
related, age-related or use-related degeneration with microscopic and macroscopic
anatomical changes, which ultimately limit motion in one or more joints. Changes to
the joint include increasing cartilage loss and osseous transformation such as sclerosis,
osteophyte formation and cysts as well as potential inflammatory changes in surrounding
soft tissue structures.