Sagittal band rupture is an injury that causes rupture of the sagittal band, leading to subluxation of the extensor digitorum communis (EDC) tendon at the metacarpophalangeal (MCP) joint. The sagittal band encircles the EDC tendon at the MCP joint and functions as an important part of the extensor mechanism to stabilize the extensor tendon. It is a relatively uncommon injury, typically involving the long finger, that may occur with direct trauma in athletes or atraumatically in inflammatory or spontaneous cases; the mechanism may be acute or chronic. The common presentation involves pain and swelling at the MCP joint, visualization of extensor tendon subluxation during flexion, and inability to actively extend the MCP joint from a flexed position. The treatment for chronic rupture, as in this case, involves surgical repair followed by six weeks in a relative motion splint, in which the injured MCP joint is placed in greater extension relative to adjacent joints. The video here demonstrates direct repair of a chronic degenerative sagittal band rupture of the right ring finger.