Essential knee terminology
A joint is a junction between two bones.
- Joint cartilage
Joint cartilage is the shiny white gristle covering the contact surfaces of the bones in articulating (moving) joints.
Abbreviation of 'juvenile rheumatoid arthritis'.
- Jumper's knee
An overuse condition, also called patellar tendinitis or tendinosis, where the area of attachment of the patellar tendon to the patella becomes painful.
- Juvenile rheumatoid arthritis
Juvenile rheumatoid arthritis is arthritis affecting a child (under 16) in several joints where evidence exists that the condition is autoimmune - ie the child's own immune system is attacking its joints.
- Juvenile traction osteochondritis
An overuse syndrome where jumping activities in a young person causes excessive pulling of the patellar tendon on the tibial tubercle. Same as Osgood Schlatter's disorder.