The purposes of this study were to report 1) long-term outcomes on a large series of patients that underwent arthroscopic resection arthroplasty (ARA) for thumb basal joint arthritis (BJA) and 2) to compare outcomes of ARA for isolated carpometacarpal osteoarthritis versus those undergoing simultaneous ARA of CMC plus the scaphotrapeziotrapezoid joint for pantrapezial disease.