Arthrofibrosis is a complication of injury or trauma to a joint. It can also be iatrogenic e.g. post knee surgeries. It consists of excessive scar tissue formation within the joint capsule, resulting in pain, stiffness, and swelling, that are greater than expected in the given clinical scenario.
It has been most extensively studied in the knee, where it is one of the leading causes of failure of a total knee arthroplasty.
The cyclops lesion is a specific manifestation of arthrofibrosis, and consists of a focal rounded mass of fibrous/scar tissue which occurs anterior to a reconstructed ACL ligament.
- 1. Cheuy VA, Foran JRH, Paxton RJ, Bade MJ, Zeni JA, Stevens-Lapsley JE. Arthrofibrosis Associated With Total Knee Arthroplasty. (2017) The Journal of arthroplasty. 32 (8): 2604-2611. doi:10.1016/j.arth.2017.02.005 - Pubmed