Ulnar-sided wrist pain can be difficult to diagnose, but one commonly missed cause is pathology involving the Extensor Carpi Ulnaris (ECU) tendon. In this video, we explain ECU tendonitis (tenosynovitis), ECU tendon subluxation, subsheath injuries, and longitudinal tears of the tendon. #WristPain #ECUTendon #Physiotherapy #SportsMedicine #WristInjury #Tendonitis #HandTherapy #RehabilitationExercises #OrthopaedicHealth #ThePhysioChannel