Basal joint arthritis leads to thumb metacarpophalangeal (MCP) hyperextension that may prevent physiologic pinch. Various techniques have been used to address this hyperextension, but most are technically challenging, time-consuming, and not supported by long-term follow-up results. Furthermore, few groups have reported subjective, patient-based outcomes after such procedures. In a retrospective study, we evaluated a cohort of 14 patients who underwent a novel technique of thumb MCP capsulodesis in conjunction with basal joint arthroplasty. A mean of 4.74 years after surgery, subjective outcome measures (Disabilities of the Arm, Shoulder, and Hand questionnaire; visual analog scale for pain; patient satisfaction) and objective outcome measures (range of motion, grip and pinch strengths) all reflected excellent function. The described technique for MCP capsulodesis is an attractive adjunct to basal joint arthroplasty, but further prospective studies are needed to establish specific operative indications.