Arthrodesis using a headless screw has been shown to be an effective surgical treatment for pain, deformity, or instability arising at the distal interphalangeal joint of the fingers or interphalangeal joint of the thumb. Previous publications have documented the utility of this treatment using open techniques. Common indications include degenerative, inflammatory, or posttraumatic arthritis and chronic mallet finger or chronic flexor digitorum profundus injury. The purpose of this study is to present an arthroscopic technique for arthrodesis of the distal interphalangeal joint of the fingers or interphalangeal joint of the thumb using the headless screw. The surgical technique is carefully outlined including surgical setup and necessary equipment. Potential technical difficulties and complications are also reviewed.