Wrist pain Tendons: The extensor tendons are intact. The flexor tendons are intact. There is no tenosynovitis.Ligaments: There is no extravasation of contrast into the radiocarpal space or the distal radioulnar joint. The scapholunate ligament is intact. The lunotriquetral ligament is intact. The triangular fibrocartilage complex is intact.Joints: There is abnormal marrow signal intensity involving the lunate dorsally with a small amount of cystic change. There is no evidence of gross collapse or fragmentation although there is some irregularity along the dorsal margin best appreciated on series 601 image 14. The remaining marrow signal of the carpal bones as well as the distal radius and ulna are normal. There is no dislocation or subluxation. There is no significant arthrosis.Muscles: There is no muscle tear or atrophy of the flexor or extensor compartments.Nerves: The median nerve in the carpal tunnel is unremarkable. The ulnar nerve in Guyon’s canal is unremarkable.
1. Abnormal marrow signal intensity and cystic change which is isolated to the lunate. These findings are concerning for developing avascular necrosis. Although this could conceivably be posttraumatic in nature, it is thought to be less likely as the marrow signal intensity of the remaining osseous and surrounding soft tissue structures is normal.2. Intact scapholunate ligament.