Tendinosis and Tenosynovitis on MRI of the wrist have a common appearance with varying amounts of enhancement, fluid and tendon hyperintensity. The appearance is common to all tendons in the wrist. 2 minute read on the various appearances on MRI.

Image Above: Tenosynovitis and tendinosis. Thick walled ( blue arrow) with enhancement ( yellow arrow) and fluid ( red arrow) in tendon sheath.

Image Above: Tenosynovitis and tendinosis. Thick low T2FS signal wall ( blue arrow) with enhancement ( yellow arrow) and fluid ( red arrow) in tendon sheath.

 

Image Above: Tenosynovitis and tendinosis. Nodular synovial enhancement which is low T2 signal within the tendon sheath ( blue arrow), enhancing tendon sheath ( red arrow) and fluid ( yellow arrow) in tendon sheath.

Image Above: Tenosynovitis and tendinosis. Soft tissue thickening and enhancement ( yellow arrow) and increased tendon signal ( red arrow). Reactive bone marrow oedema ( blue arrow) in ulnar.