Reviewing the epidemiology, diagnosis, and nonsurgical treatments for pisiform ligament complex syndrome and pisotriquetral arthrosis.

Ulnar palmar wrist pain originating near the pisiform due to injury to components of the Pisiform Ligament Complex (PLC), leading to Pisotriquetral (PT) joint instability and subsequent arthrosis, is termed Pisiform Ligament Complex (PLC) syndrome. This condition involves degeneration of the articular surfaces of the pisiform and triquetrum, resulting in PT joint osteoarthritis. Primary osteoarthritis of the PT joint is rare, with most cases being post-traumatic and preceded by chronic PT joint instability. Therefore, understanding the mechanism of PT joint osteoarthritis requires considering its interaction with other conditions. Pisotriquetral Arthrosis (PTA) is a broader term encompassing arthritic conditions affecting this joint. Investigating the anatomy, biomechanics of the pisiform and PT joint ligaments, and clinical subtypes of PLC syndrome is crucial for comprehending PTA's structure and manifestations. PLC syndrome spans from instability to Pisotriquetral Arthrosis (PTA). Early identification and management of PLC instability can prevent PTA advancement. The pisiform tracking test is instrumental in diagnosing PLC syndrome. When conservative methods fail to address severe PLC syndrome, pisiformectomy with soft tissue preservation remains the preferred treatment.